Publications

last updated March 2025

Google Scholar Profile [Link]

Published Journal Articles:

236. Holt, A.D., McKenna, A.M., Kellerman, A.M., Battin, T.I., Fellman, J.B., Hood, E., Hannes, P., Schon, M., De Staercke, V., Styllas, M., Tolosano, M., Spencer, R.G.M. 2025. Widespread Black Carbon Deposition of Varied Origin Exported from Glaciers. Global Biogeochemical Cycles, doi:10.1029/2024GB008359

235. Kurek, M.R., Pokrovsky, O., Krickov, I.V., Lim, A.G., Korets, M.A., Spencer, R.G.M. 2025. Assessing the Molecular-Level Controls of Dissolved Organic Matter Cycling in West Siberian Lowland Rivers. Journal of Geophysical Research: Biogeosciences, 130, e2024JG008537.

234. Li, S., Wang, X., Liu, J., Zhang, J., Spencer, R.G.M., Kellerman, A.M., McKenna, A.M., Ma, X., Jiang, Q., Huang, T., Yang, H., Huang, C. 2025. Historical Inputs and Biogeochemical Transformations of Dissolved Organic Matter Since 1850 CE in a Small Plateau-lake, Southwest China. Palaeogeography, Paleoclimatology, Palaeoecology, 663, 112798.

233. Qian, M., Zhou, Y., Zhou, L., Zhang, Y., Pu, Y., Drake, T.W., Davidson, T.A., Spencer, R.G.M., Brookes, J.D., Jeppesen, E. 2025. Inflow-modulated Inputs of Dissolved Organic Matter Fuel Carbon Dioxide Emissions from a Large Hyper-eutrophic Lake. Water Research, 273, 123082.

232. Tian, S., Sha, A., Luo, Y., Ke, Y., Spencer, R., Hu, X., Ning, M., Zhao, Y., Deng, R., Gao, Y., Liu, Y., Li, D. 2025. A Novel Framework for River Organic Carbon Retrieval Through Satellite Data and Machine Learning. ISPRS Journal of Photogrammetry and Remote Sensing, 221, 109-123.

231. Kellerman, A.M., Lin, Y., McKenna, A.M., Osborne, T.Z., Canion, A., Lee, Y., Freitas, A.M., Chanton, J.P., Spencer, R.G.M. 2025. Identifying the Molecular Signatures of Organic Matter Leached from Land-Apllied Biosolids via 21 T FT-ICR Mass Spectrometry. Environmental Science & Technology, 59, 2665-2674.

230. Doting, E.L., Stevens, I.T., Kellerman, A.M., Roseel, P.E., Antony, R., McKenna, A.M., Tranter, M., Benning, L.G., Spencer, R.G.M., Hawkings, J.R., Anesio, A.M. 2025. Molecular-level Characterization of Supraglacial Dissolved and Water-Extractable Organic Matter Along a Hydrological Flow Path in a Greenland Ice Sheet Micro-catchment. Biogeosciences, 22, 41-53.

229. Moore, O.C., Holt, S.D., Richards, L., McKenna, A.M., Spencer, R.G.M., Lapworth, D., Polya, D.A., Lloyd, J.R., van Dongen, B.E. 2024. Characterisation of Dissolved Organic Matter in Two Contrasting Arsenic-Prone Sites in Kandal Province, Cambodia. Organic Geochemistry, 198, 104886.

228. Holt, A.D., McKenna, A.M., Kellerman, A.M., Battin, T.I., Fellman, J.B., Hood, E., Peter, H., Schon, M., De Staercke, V., Styllas, M., Tolosano, M., Spencer, R.G.M. 2024. Gradients of Deposition and In Situ Production Drive Global Glacier Organic Matter Composition. Global Biogeochemical Cycles, 38, e2024GB008212.

227. Yvin, O.R., Kurek, M.R., McKenna, A.M., Hawkings, J.R., Spencer, R.G.M. 2024. Comparison of dissolved organic matter composition from various sorbents using ultra-high resolution mass spectrometry. Organic Geochemistry, 196, 104846.

226. Bristol, E.M., Behnke, M.I., Spencer, R.G.M., McKenna, A., Jones, B.M., Bull, D.L., McClelland, J.W. 2024. Eroding Permafrost Coastlines Release Biodegradable Dissolved Organic Carbon to the Arctic Ocean. Journal of Geophysical Research: Biogeosciences, 129, e2024JG008233.

225. Burns, A.J., Spencer, R.G.M., Kellerman, A.M., Yan, G., Leonard, L., Kaiser, K., Mannino, A., Tzortziou, M., Hernes, P.J. 2024. The Distinct Composition and Transformation of Terrestrial Organic Carbon in the Yukon River Delta and Plume During the Mighty Spring Freshet. Journal of Geophysical Research: Biogeosciences, 129, e2023JG007812.

224.  Rosengard, S.Z., Moura, J.M.S., Spencer, R.G.M., Johnson, C., McNichol, A., Steen, A., Galy, V. 2024. Depth‐Partitioning of Particulate Organic Carbon Composition in the Rising and Falling Stages of the Amazon River. Geochemistry, Geophysics, Geosystems, 25, e2023GC011273.

223.  Kurek, M.R., Wickland, K.P., Nichols, N.A., McKenna, A.M., Anderson, S.M., Dornblaser, M.M., Koupaei-Abyazani, N., Poulin, B.A., Bansal, S., Fellman, J.B., Druschel, G.K., Bernhardt, E.S., Spencer, R.G.M. 2024. Linking Dissolved Organic Matter Composition to Landscape Properties in Wetlands Across the United States of America. Global Biogeochemical Cycles, 38, e2023GB007917.

222.  Wang, Y., Wang, Y., Han, L., McKenna, A., Kellerman, A.M., Spencer, R.G.M., Yang, Y., Xu, Y. 2024. Concentration and compositional controls on degradation of permafrost-derived dissolved organic matter on the Qinghai–Tibetan Plateau. Limnology and Oceanography Letters, 2378-2242.

221. Starr, S., Frey, K.E., Smith, L.C., Kellerman, A.M., McKenna, A.M., Spencer, R.G.M. 2024. Peatlands Versus Permafrost: Landscape Features as Drivers of Dissolved Organic Matter Composition in West Siberian Rivers. Journal of Geophysical Research: Biogeosciences, 129, e2023JG007797.

220.  Zhang, T., Zhou, L., Zhou, Y., Zhang, Y., Guo, J., Han, Y., Zhang, Y., Hu, L., Jang, K-S., Spencer, R.G.M., Brookes, J.D., Dolfing, J., Jeppesen, E. 2024. Terrestrial dissolved organic matter inputs accompanied by dissolved oxygen depletion and declining pH exacerbate CO2 emissions from a major Chinese reservoir. Water Research, 251, 121155.

219.  Yang, X., Zhou, Y., Yang, X., Zhang, Y., Spencer, R.G.M., Brookes, J.D., Jeppesen, E., Zhang, H., Zhou, Q. 2024. Optical measurements of dissolved organic matter as proxies for CODMn and BOD5 in plateau lakes. Environmental Science and Ecotechnology, 19, 100326.

218. Zhou, L., Wu, Y., Zhou, Y., Zhang, Y., Xu, H., Kyoung-Soon, J., Dolfing, J., Spencer, R.G.M., Jeppesen, E. 2024. Terrestrial dissolved organic matter inputs drive the temporal dynamics of riverine bacterial ecological networks and assembly processes. Water Research, 249, 120955.

217. Podgorski, D.C., Walley, J., Shields, M.P., Hebert, D., Harsha, M.L., Spencer, R.G.M., Tarr, M.A., Zito, P. 2024. Dispersant-enhanced photodissolution of Macondo crude oil: A molecular perspective. Journal of Hazardous Materials, 461, 132558.

216. Moore, M.R.N., Tank, S.E., Kurek, M.R., Taskovic, M., McKenna, A.M., Smith, J.L.J., Koklej, S.V., Spencer, R.G.M. 2023. Ultrahigh resolution dissolved organic matter characterization reveals distinct permafrost characteristics on the Peel Plateau, Canada. Biogeochemistry, 166, 1-19.

215.  Meng, L., Xue, J., Zhao, C., Huang, T., Yang, H., zhao, K., Yu, Z., Yuan, L., Zhou, Q., Kellerman, A.M., McKenna, A.M., Spencer, R.G.M., Huang, C. 2023. N-containing dissolved organic matter promotes dissolved inorganic carbon supersaturation in the Yangtze River, China. Water Research, 247, 120808.

214.  Page, H.N., McCoy, S., Spencer, R.G.M., Burnham, K.A., Hewett, C., Johnson, M. 2023. Effects of ocean acidification on growth and photophysiology of two tropical reef macroalgae. PLOS ONE, 18, e0286661.

213. Garcia-Tigreros, F., Elder, C.D., Kurek, M.R., Miller, B.L., Xu, X., Wickland, K.P., Czimczik, C.I., Dornblaser, M.M., Striegl, R.G., Kyzivat, E.D., Smith, L.C., Spencer, R.G.M., Miller, C.E., Butman, D.E. 2023. Arctic-boreal lakes of interior Alaska dominated by contemporary carbon. Environmental Research Letters, 18, 124024.

212. Stubbins, A., Zhu, L., Zhao, S., Spencer, R.G.M., Podgorski, D.C. 2023. Molecular signatures of dissolved organic matter generated from the photodissolution of microplastics in sunlit seawater. Environmental Science & Technology, 57, 20097-20106.

211.  Behnke, M.I., Fellman, J.B., Nagorski, S., Spencer, R.G.M., Hood, E. 2023. The role of glacier erosion in riverine particulate organic carbon export. Global Biogeochemical Cycles, 37, e2023GB007721.

210.  Drake, T.W., Barthel, M., Mbongo, C.E., Mpambi, D.M., Baumgartner, S., Botefa, C.I., Bauters, M., Kurek, M.R., Spencer, R.G.M., McKenna, A.M., Haghipour, N., Ekamba, G.L., Wabakanghanzi, J.N., Eglinton, T.I., Van Osst, K., Six, J. 2023. Hydrology drives export and composition of carbon in a pristine tropical river. Limnology and Oceanography, 68, 2476-2491.

209.  Kellerman, A.M., Hernes, P.J., McKenna, A.M., Clark, B.J., Edmund, A., Grunert, B., Mann, P.J., Mannino, A., Novak, M., Stubbins, A., Tzortziou, M., Zimov, N., Spencer, R.G.M. 2023. Mixing behavior of dissolved organic matter at the Yukon and Kolyma land ocean interface. Marine Chemistry, 255, 104281.

208.  Tank, S.E., McClelland, J.W., Spencer, R.G.M., Shiklomanov, A.I., Suslova, A., Moatar, F., Amon, R.M.W., Cooper, L.W., Elias, G., Gordeev, V.V., Guay, C., Gurtovaya, T.Y., Kosmenko, L.S., Mutter, E.A., Peterson, B.J., Peucker-Ehrenbrink, B., Raymond, P.A., Schuster, P.F., Scott, L., Staples, R., Striegl, R.G., Tretiakov, M., Zhulidov, A.V., Zimov, N., Zimov, S., Holmes, R.M. 2023. Recent trends in the chemistry of major northern rivers signal widespread Arctic change. Nature Geoscience, 16, 789-796.

207.  Matiasek, S.J., Pellerin, B.A., Spencer, R.G.M., Bergamaschi, B.A., Hernes, P.J. 2023. Water-soluble organic carbon release from mineral soils and sediments in an irrigated agricultural system. Journal of Environmental Management, 343, 118184.

206. Clark, J.B., Mannino, A., Spencer, R.G.M., Tank, S.E., McClelland, J.W. 2023. Quantification of discharge-specific effects on dissolved organic matter export from major Arctic rivers from 1982 through 2019. Global Biogeochemical Cycles, 37, e2023GB007854.

205.  Wang, C., Pavelsky, T.M., Kyzivat, E.D., Garcia-Tigreros, F., Podest, E., Yao, F., Yang, X., Zhang, S., Song, C., Langhorst, T., Dolan, W., Kurek, M.R., Harlan, M.E., Smith, L.C., Butman, D.E., Spencer, R.G.M., Gleason, C.J., Wickland, K.P., Striegl, R.G., Peters, D.L. 2023. Quantification of wetland vegetation communities features with airborne AVIRIS-NG, UAVSAR, and UAV LiDAR data in Peace-Athabasca Delta. Remote Sensing of Environment, 294, 113646. 

204.  Kurek, M.R., Garcia-Tigreros, F., Nichols, N.A., Druschel, G.K., Wickland, K.P., Dornblaser, M.M., Striegl, R.G., Niles, S.F., McKenna, A.M., Aukes, P.J.K., Kyzivat, E.D., Wang, C., Smith, L.C., Schiff, S.L., Butman, D., Spencer, R.G.M. 2023. High voltage: The molecular properties of redox-active dissolved organic matter in northern high-latitude lakes. Environmental Science & Technology, 57, 8617-8627.

203.  Holt, A.D., Kellerman, A.M., Battin, T.I., McKenna, A.M., Hood, E., Andino, P., Crespo-Perez, V., Hannes, P., Schon, M., De Staercke, V., Styllas, M., Tolosano, M., Spencer, R.G.M. 2023. A tropical cocktail of organic matter sources: Variability in supraglacial and glacier outflow dissolved organic matter composition and age across the Ecuadorian Andes. Journal of Geophysical Research-Biogeosciences, 128, e2022JG007188.

202. Zhou, L., Yonghong, W., Junzhou, L., Pengfei, S., Ying, X., Dolfing, J., Spencer, R.G.M., Jeppesen, E. 2023. The importance of periphytic biofilms for carbon cycling in paddy fields: A review. Pedosphere, 33, doi.org/10.1016/j.pedsph.2023.03.005.

201.  Li, S., Meng, L., Zhao, C., Gu, Y., Spencer, R.G.M., Alvarez-Salgado, X.A., Kellerman, A.M., McKenna, A.M., Huang, T., Yang, H., Huang, C. 2023. Spatiotemporal response of dissolved organic matter diversity to natural and anthropogenic forces along the whole mainstream of the Yangtze River. Water Research, 234, 119812.

200.  Starr, S., Johnston, S.E., Sobolev, N., Perminova, I., Kellerman, A., Fiske, G., Bulygina, E., Shiklomanov, A., McKenna, A., Spencer, R.G.M. 2023. Characterizing uncertainty in Pan-Arctic land-ocean dissolved organic carbon flux: Insights from the Onega River, Russia. Journal of Geophysical Research-Biogeosciences, 128, e2022JG007073.

199. Behnke, M.I., Fellman, J.B., D’Amore, D.V., Spencer, R.G.M. 2023. Trees in the stream: Determining patterns of terrestrial dissolved organic matter contributions to the Northeast Pacific Coastal Temperate Rainforest. Journal of Geophysical Research-Biogeosciences, 128, e2022JG007027.

198.  Bao, H., Wu, Y., Zhan, X., Wang, X., Spencer, R.G.M., Hernes, P.J., Feng, X., Lee, L.C., Huang, J.C., Zhang, J., Zhao, H., Kao, S.J., Zhang, J. 2023. Global riverine export of dissolved lignin constrained by hydrology, geomorphology and land-cover. Global Biogeochemical Cycles, 37, e2022GB007607.

197.  Venturelli, R.A., Boehman, B., Davis, C., Hawkings, J.R., Johnston, S.E., Gustafson, C.D., Michaud, A.B., Mosbeux, C., Siegfried, M.R., Vick-Majors, T.J., Galy, V., Spencer, R.G.M., Warny, S., Christner, B.C., Fricker, H.A., Harwood, D.M., Leventer, A., Priscu, J.C., Rosenheim, B.E., SALSA Science Team. 2023. Constraints on the timing and extent of deglacial grounding line retreat in West Antarctica. AGU Advances, 4, e2022AV000846.

196.  Liao, J., Huang, Q.H., Liu, G.N., Wang, N.T., Qiu, Z.P., Hu, C.Y., Spencer, R.G.M. 2023. Seasonal hydrological change shaping the relationship between dissolved organic matter and land use in the middle reaches of the Yangtze River. Biogeochemistry, 163, 329-345.

195.  Zhou, L., Zhou, Y., Zhang, Y., Wu, K., Jang, K.S., Spencer, R.G.M., Brookes, J.D., Jeppesen, E. 2023. Hydrological controls on dissolved organic matter composition throughout the aquatic continuum of the watershed of Selin Co, the largest lake on the Tibetan Plateau. Environmental Science & Technology, 57, 4668-4678.

194.  Zhou, Y., Chen, L., Zhou, L., Peng, K., Gong, Z., Jang, K.S., Spencer, R.G.M., Jeppesen, E., Brookes, J.D., Kothawala, D.N., Wu, F. 2023. Key factors driving dissolved organic matter composition and bioavailability in lakes situated along the Eastern Route of the South-to-North Water Diversion Project, China. Water Research, 233, 119782.

193.  Behnke, M.I., Tank, S.E., McClelland, J.W., Holmes, R.M., Haghipour, N., Eglinton, T.I., Raymond, P.A., Suslova, A., Zhulidov, A.V., Gurtovaya, T., Zimov, N., Zimov, S., Mutter, E.A., Amos, E., Spencer, R.G.M. 2023. Aquatic biomass is a major source to particulate organic matter export in large Arctic rivers. Proceedings of the National Academy of Sciences, 120, 12, e2209883120.

192. Vaughn, D.R., Kellerman, A.M., Wickland, K.P., Striegl, R.G., Podgorski, D.C., Hawkings, J.R., Nienhuis, J.H., Dornblaser, M.M., Stets, E.G., Spencer, R.G.M. 2023. Bioavailability of dissolved organic matter varies with anthropogenic landcover in the Upper Mississippi River Basin. Water Research, 229, 119357.

191.  Zhou, Y., Yu., X., Zhou, L., Zhang, Y., Hu, X., Zhu, M., Zhu, G., Jang, K.S., Spencer, R.G.M., Jeppesen, E., Brookes, J.D., Kothawala, D.N., Wu, F. 2023. Rainstorms drive export of aromatic and concurrent bio-labile organic matter to a large eutrophic lake and its major tributaries. Water Research, 229, 119448.

190.  Chin, Y.P., and 25 co-authors including Spencer, R.G.M. 2023. Identification of next-generation International Humic Substances Society reference materials for advancing the understanding of the role of natural organic matter in the Anthropocene. Aquatic Sciences, 85, doi.org/10.1007/s00027-022-00923-x.

189.  Francis, A., Ganeshram, R.S., Tuerena, R.E., Spencer, R.G.M., Holmes, R.M., Rogers, J.A., Mahaffey, C. 2023. Permafrost degradation and nitrogen cycling in Arctic rivers: insights from stable nitrogen isotope studies. Biogeosciences, 20, 365-381.

188.  Kurek, M.R., Garcia-Tigreros, F., Wickland, K.P., Frey, K.E., Dornblaser, M.M., Striegl, R.G., Niles, S.F., McKenna, A.M., Aukes, P.J.K., Kyzivat, E.D., Wang, C., Pavelsky, T.M., Smith, L.C., Schiff, S.L., Butman, D., Spencer, R.G.M. 2023. Hydrologic and landscape controls on dissolved organic matter composition across western North American Arctic lakes. Global Biogeochemical Cycles, 37, e2022GB007495.

187.  Clark, J.B., Mannino, A., Tzortziou, M., Spencer, R.G.M., Hernes, P.J. 2022. The transformation and export of organic carbon across an Arctic river-delta-ocean continuum. Journal of Geophysical Research-Biogeosciences, 127, doi.org/10.1029/2022JG007139.

186. Wang, J., Zhou, Y., Zhou, L., Zhang, Y., Qin, B., Spencer, R.G.M., Brookes, J.D., Jeppesen, E., Weyhenmeyer, G.A., Wu, F. 2022. Urbanization in developing countries overrides catchment productivity in fueling inland water CO2 emissions. Global Change Biology, doi.org/10.1111/gcb.16475.

185. Li, Y., Zhou, Y., Zhou, L., Zhang, Y., Xu, H., Jang, K.S., Kothawala, D.N., Spencer, R.G.M., Jeppesen, E., Brookes, J.D., Davidson, T.A., Wu, F. 2022. Changes in water chemistry associated with rainstorm events increase carbon emissions from the inflowing river mouth of a major drinking water reservoir. Environmental Science & Technology, doi.org/10.1021/ acs.est.2c06405.

184. Hu, X., Zhou, Y., Zhou, L., Zhang, Y., Wu, L., Xu, H., Zhu, G., Jang, K.S., Spencer, R.G.M., Jeppesen, E., Brookes, J.D., Wu, F. 2022. Urban and agricultural land use regulates the molecular composition and bio-lability of fluvial dissolved organic matter in human-impacted southeastern China. Carbon Research, 1, doi.org/10.1007/s44246-022-00020-6.

183. Dubnick, A., Faber, Q., Hawkings, J.R., Bramall, N., Christner, B.C., Doran, P.T., Nadeau, J., Snyder, C., Kellerman, A.M., Spencer, R.G.M., Skidmore, M.L. 2022. Biogeochemical responses to mixing of glacial meltwater and hot spring discharge in the Mount St. Helens crater. Journal of Geophysical Research-Biogeosciences, 127, doi.org/10.1029/2022 JG006852.

182.  Novak, M.G., Mannino, A., Clark, J.B., Hernes, P., Tzortziou, M., Spencer, R.G.M., Kellerman, A.M., Grunert, B. 2022. Arctic biogeochemical and optical properties of dissolved organic matter across river to sea gradients. Frontiers in Marine Science, 9, 949034.

181.  LaBrie, R., Pequin, B., St-Gelais, N.F., Yashayaev, I., Cherrier, J., Gelinas, Y., Guillemette, F., Podgorski, D.C., Spencer, R.G.M., Tremblay, L., Maranger, R. 2022. Deep ocean microbial communities produce more stable dissolved organic matter through the succession of rare prokaryotes. Science Advances, 8, eabn0035.

180. Kurek, M.R., Stubbins, A., Drake, T.W., Dittmar, T., Moura, J.M., Holmes, R.M., Osterholz, H.J., Six, J., Wabakanghanzi, J.N., Dinga, B., Mitsuya, M., Spencer, R.G.M. 2022. Organic molecular signatures of the Congo River and comparison to the Amazon. Global Biogeochemical Cycles, 36, e2022GB007301.

179. Voss, B.M., Eglinton, T.I., Peucker-Ehrenbrink, B.P, Galy, V., Lang, S.Q., McIntyre, C., Spencer, R.G.M., Bulygina, E., Wang, Z.A., Guay, K.A. 2022. Isotopic evidence for sources of dissolved carbon and the role of organic matter respiration in the Fraser River basin, Canada. Biogeochemistry, 1-22, doi.org/10/1007/s10533-022-00945-5.

178. McDonough, L.K., Andersen, M.S., Behnke, M.I., Rutlidge, H., Oudone, P., Meredith, K., O’Carroll, D.M., Santos, I.R., Marjo, C.E., Spencer, R.G.M., McKenna, A.M., Baker, A. 2022. A new conceptual framework for the transformation of groundwater dissolved organic matter. Nature Communications, 13, 2153.

177. Kurek, M.R., Frey, K.E., Guillemette, F., Podgorski, D.C., Townsend-Small, A., Arp, C.D., Kellerman, A.M., Spencer, R.G.M. 2022. Trapped under ice: Spatial and seasonal dynamics of dissolved organic matter composition in tundra lakes. Journal of Geophysical Research-Biogeosciences, 127, doi.org/10.1029/2021JG006578.

176. Koch, J.C., Bogard, M.J., Butman, D.E., Finlay, K., Ebel, B., James, J., Johnston, S.E., Jorgenson, M.T., Pastick, N.J., Spencer, R.G.M., Striegl, R., Walvoord, M., Wicklnad, K.P. 2022. Heterogeneous patterns of aged organic carbon export driven by hydrologic flow paths, soil texture, fire, and thaw in discontinuous permafrost headwaters. Global Biogeochemical Cycles, 36, e2021GB007242.

175. Zolkos, S., Zhulidov, A.V., Gurtovaya, T.Y., Gordeev, V.V., Berdnikov, S., Pavlova, N.A., Kalko, E.A., Kuklina, Y.A., Zhulidov, D.A., Kosmenko, L.S., Shiklomanov, A.I., Suslova, A., Getman, B.M., Thackray, C.P., Sunderland, E.M., Tank, S.E., McClelland, J.W., Spencer, R.G.M., Krabbenhoft, D.P., Robarts, R., Holmes, R.M. 2022. Multi-decadal declines in particulate mercury and sediment export from Russian rivers in the pan-Arctic basin. PNAS, 119, 14, e2119857119.

174.  Zhou, Y., Zhou, L., Zhang, Y., Zhu, G., Qin, B., Jang, K.S., Spencer, R.G.M., Kothawala, D.N., Jeppesen, E., Brookes, J.D., Wu, F. 2022. Unraveling the role of anthropogenic and natural drivers in shaping the molecular composition and biolability of dissolved organic matter in non-pristine lakes. Environmental Science & Technology, doi.org/10/1021/ acs.est.1c08003.

173.  Wang, Y.H., Zhang, P., He, C., Yu, J.C., Shi, Q., Dahlgren, R.A., Spencer, R.G.M., Yang, Z.B., Wang, J.J. 2022. Molecular signatures of soil-derived dissolved organic matter constrained by mineral weathering. Fundamental Research, doi.org/10.1016/ j.fmre. 2022.01.032.

172. Behnke, M.I., Fellman, J.B., D’Amore, D.V., Gomez, S.M., Spencer, R.G.M. 2022. From canopy to consumer: what makes and modifies terrestrial DOM in a temperate forest. Biogeochemistry, doi.org/10.1007/s10533-022-00906-y.

171.  Li, S., Fang, J., Zhu, X., Spencer, R.G.M., Alvarez-Salgado, X.A., Deng, Y., Huang, T., Yang, H., Huang, C. 2022. Properties of sediment dissolved organic matter respond to eutrophication and interact with bacterial communities in a plateau lake. Environmental Pollution, 301, 118996.

170.  Cory, A.B., Chanton, J.P., Spencer, R.G.M., Ogles, O.C., Rich, V.I., McCalley, C.K., IsoGenie Project Coordinators, EMERGE 2021 Field Team, Wilson, R.M. 2022. Quantifying the inhibitory impact of soluble phenolics on anaerobic carbon mineralization in a thawing permafrost peatland. PLOS One, 17, e0252743.

169. Barthel, M., Bauters, M., Baumgartner, S., Drake, T.W., Bey, N.M., Bush, G., Boeckx, P., Botefa, C.I., Deriaz, N., Ekamba, G.L., Gallarotti, N., Mbayu, F.M., Mugula, J.K., Makelele, I.A., Mbongo, C.E., Mohn, J., Mandea, J.Z., Mpambi, D.M., Ntaboba, L.C., Rukeza, M.B., Spencer, R.G.M., Summerauer, L., Vanlauwe, B., Van Oost, K., Wolf, B., Six, J. 2022. Low N2O and variable CH4 fluxes from tropical forest soils of the Congo Basin. Nature Communications, 13, 330.

168.  Johnston, S.E., Finlay, K., Spencer, R.G.M., Butman, D.E., Mrtz, M., Striegl, R.G., Bogard, M.J. 2021. Zooplankton release complex dissolved organic matter to aquatic environments. Biogeochemistry, doi.org/10/1007/s10533-021-00876-7.

167.  Mann, P.J., Stauss, J., Palmtag, J., Dowdy, K., Ogneva, O., Fuchs, M., Bedington, M., Torres, R., Polimene, L., Overduin, P., Mollenhauer, G., Grosse, G., Rachold, V., Sobczak, W.V., Spencer, R.G.M., Juhls, B. 2021. Degrading permafrost river catchments and their impact on Arctic Ocean nearshore processes. Ambio, doi:10.1007/s13280-021-01666-z.

166. Holt, A.D., Kellerman, A.M., Li, W., Stubbins, A., Wagner, S., McKenna, A., Fellman, J., Hood, E., Spencer, R.G.M. 2021. Assessing the role of photochemistry in driving the composition of dissolved organic matter in glacier runoff. Journal of Geophysical Research-Biogeosciences, 126, doi.org/10.1029/2021JG006516.

165.  Rodriguez-Cardona, B.M., Wymore, A.S., Argerich, A., Barnes, R.T., Bernal, S., Brookshire, E.N.J., Coble, A.A., Dodds, W.K., Fazekas, H.M., Helton, A.M., Johnes, P.J., Johnson, S.L., Johnson, J.B., Jones, J.B., Kaushal, S.S., Kortelainen, P., Lopez-Lloreda, C., Spencer, R.G.M., McDowell, W.H. 2021. Shifting stoichiometry: Long-term trends in stream dissolved organic matter reveal altered C:N ratios due to history of atmospheric acid deposition. Global Change Biology, doi.org/10.111/gcb.15965.

164. Vaughn, D.R., Kellerman, A.M., Wickland, K.P., Striegl, R.G., Podgorski, D.C., Hawkings, J.R., Nienhuis, J.H., Dornblaser, M.M., Stets, E.G., Spencer, R.G.M. 2021. Anthropogenic landcover impacts fluvial dissolved organic matter composition in the Upper Mississippi River Basin. Biogeochemistry, doi.org/10/1007/s10533-021-00852-1.

163. Johnston, S.E., Carey, J.C., Kellerman, A., Podgorski, D.C., Gewirtzman, J., Spencer, R.G.M. 2021. Controls on riverine dissolved organic matter composition across an Arctic-Boreal latitudinal gradient. Journal of Geophysical Research-Biogeosciences, 126, doi.org/10.1029/202JG005988.

162. Wymore, A.S., Johnes, P.J., Bernal, S., Brookshire, E.N.J., Fazekas, H.M., Helton, A., Argerich, A., Barnes, R.T., Coble, A.A., Dodds, W.K., Haq, S., Johnson, S.L., Jones, J.B., Kaushal, S.S., Kortelainen, P., Lopez-Lloreda, C., Roriguez-Cardona, B.M., Spencer, R.G.M., Sullivan, P.L., Yates, C.A., McDowell, W.H. 2021. Gradients of anthropogenic nutrient enrichment alter N composition and DOM stoichiometry in freshwater ecosystems. Global Biogeochemical Cycles, 35, doi.org/10/1029/2021GB006953.

161. Rogers, J.A., Galy, V., Kellerman, A.M., Chanton, J.P., Zimov, N., Spencer, R.G.M. 2021. Limited presence of permafrost dissolved organic matter in the Kolyma River, Siberia revealed by ramped oxidation. Journal of Geophysical Research-Biogeosciences, 126, doi.org/10.1029/2020JG005977.

160.  Wagner, S., Coppola, A.I., Stubbins, A., Dittmar, T., Niggemann, J., Drake, T.W., Seidel, M., Spencer, R.G.M., Bao, H. 2021. Questions remain about the biolability of dissolved black carbon along the combustion continuum. Nature Communications, 12, 4281.

159. Saatchi, S., and 57 co-authors including Spencer, R.G.M. 2021. Detecting vulnerability of humid tropical forests to multiple stressors. One Earth, 4, 988-1003.

158. Kurek, M.R., Stubbins, A., Drake, T.W., Moura, J.M.S., Holmes, R.M., Osterholz, H., Dittmar, T., Peucker-Ehrenbrink, B., Mitsuya, M., Spencer, R.G.M. 2021. Drivers of organic molecular signatures in the Amazon River. Global Biogeochemical Cycles, doi.org/ 10.1029/2021GB006938.

157. Holt, A.D., Fellman, J., Hood, E., Kellerman, A.M., Raymond, P., Stubbins, A., Dittmar, T., Spencer, R.G.M.2021. The evolution of stream dissolved organic matter composition following glacier retreat in coastal watersheds of Southeast Alaska. Biogeochemistry, doi.org/ 10.1007/s10533-021-00815-6.

156. Hawkings, J.R., Linhoff, B.S., Wadham, J.L., Stibal, M., Lamborg, C.H., Carling, G.T., Lamarche-Gargon, G., Kohler, T.J., Ward, R., Hendry, K.R., Falteisek, L., Kellerman, A.M., Cameron, K.A., Hatton, J.E., Tingey, S., Holt, A.D., Vinsova, P., Hofer, S., Bulinova, M., Vetrovsky, T., Meire, L., Spencer, R.G.M. 2021. Large subglacial source of mercury from the southwestern margin of the Greenland ice sheet. Nature Geoscience, 14, 496-502.

155. Marshall, M.G., Kellerman, A.M., Wadham, J.L., Hawkings, J.R., Daneri, G., Torres, R., Pryer, H.V., Beaton, A., Ng, H.C., Urra, A., Robinson, L.F., Spencer, R.G.M. 2021. Seasonal changes in dissolved organic matter composition in a Patagonian fjord affected by glacial melt inputs. Frontiers in Marine Science, 8, 276.

154. Behnke, M.I., McClelland, J.W., Tank, S.E., Kellerman, A.M., Holmes, R.M., Haghipour, N., Eglinton, T.I., Raymond, P.A., Suslova, A., Zhulidov, A.V., Gurtovaya, T., Zimov, N., Zimov, S., Mutter, E.A., Amos, E., Spencer, R.G.M. 2021. Pan-Arctic riverine dissolved organic matter: Synchronous molecular stability, shifting sources and subsidies. Global Biogeochemical Cycles, doi.org/10.1029/2020GB006871.

153. Drake, T.W., Hemingway, J.D., Kurek, M.R., Peucker-Ehrenbrink, B., Brown, K.A., Holmes, R.M., Galy, V., Moura, J.M.S., Mitsuya, M., Wassenaar, L.I., Six, J., Spencer, R.G.M. 2021. The pulse of the Amazon: fluxes of dissolved organic carbon, nutrients, and ions from the world’s largest river. Global Biogeochemical Cycles, doi.org/10.1029/2020GB006895.

152. Feng, L., An, Y., Xu, J., Kellerman, A.M., Chacon-Patino, M.L., Spencer, R.G.M. 2021. Molecular insights into glacial cryoconite dissolved organic matter evolution under dark conditions during the ablation season on the Tibetan Plateau. ACS Earth and Space Chemistry, doi.org/10.1021/acsearthspacechem.0c00361.

151. Kellerman, A.M., Vonk, J., McColaugh, S., Podgorski, D.C., van Winden, E., Hawkings, J.R., Johnston, S.E., Humayun, M., Spencer, R.G.M. 2021. Molecular signatures of glacial dissolved organic matter from Svalbard and Greenland. Global Biogeochemical Cycles, doi.org/10.1029/2020GB006709.

150. Zhou, Y., Yao, X., Zhou, L., Zhao, Z., Wang, X., Jang, K.S., Tian, W., Zhang, Y., Podgorski, D.C., Spencer, R.G.M., Kothawala, D.N., Jeppesen, E., Wu, F. 2021. How hydrology and anthropogenic activity influence the molecular composition and export of dissolved organic matter: Observations along a large river continuum. Limnology & Oceanography, 66, 1730-1742.

149. Chen, M., Li, C., Spencer, R.G.M., Maie, N., Hur, J., McKenna, A.M., Yan, F. 2021. Climatic, land cover, and anthropogenic controls on dissolved organic matter quantity and quality from major alpine rivers across the Himalayan-Tibetan Plateau. Science of the Total Environment, doi.org/10.1016/j.scitotenv.2020.142411.

148. Xenopoulos, M.A., Barnes, R.T., Boodoo, K.S., Butman, D., Catalan, N., D’Amario, S.C., Fasching, C., Kothawala, D.N., Pisani, O., Solomon, C.T., Spencer, R.G.M., Williams, C.J., Wilson, H.F. 2021. How humans alter dissolved organic matter composition in freshwater: relevance for Earth’s biogeochemistry. Biogeochemistry, doi.org/10.1007/s10533-021-00753-3.

147. Podgorski, D.C., Zito, P., Kellerman, A.M., Bekins, B.A., Cozzarelli, I.M., Smith, D.F., Cao, X., Schmidt-Rohr, K., Wagner, S., Stubbins, A., Spencer, R.G.M. 2021. Journal of Hazardous Materials, doi.org/10.1016/j.jhazmat.2020.123998.

146. Wologo, E., and 27 co-authors including Spencer, R.G.M. 2020. Stream dissolved organic matter in permafrost regions shows surprising compositional similarities but negative priming and nutrient effects. Global Biogeochemical Cycles, doi.org/10.1029/2020GB006719.

145. Hawkings, J. R., Skidmore, M. L., Wadham, J. L., Priscu, J. C., Morton, P. L., Hatton, J. E., Gardner, C. B., Kohler, T. J., Stibal, M., Bagshaw, E. A., Steigmeyer, A., Barker, J., Dore, J. E., Lyons, W. B., Tranter, M., Spencer, R. G. M., & SALSA Science Team. 2020. Enhanced trace element mobilization by Earth's ice sheets. PNAS, 117, 31648-31659.

144. Kurek, M.R., Poulin, B.A., McKenna, A.M., Spencer, R.G.M. 2020. Deciphering dissolved organic matter: Ionization, dopant, and fragmentation insights via Fourier transform-ion cyclotron resonance mass spectrometry. Environmental Science & Technology, doi.org/ 10/1021/acs.est.0c05206.

143. Putillo, A.R., Flint, M., Seminoff, J.A., Spencer, R.G.M., Fuentes, M.M.P.B. 2020. Plasma biochemistry profiles of juvenile green turtles (Chelonia mydas) from the Bahamas with a potential influence of diet. Journal of Wildlife Disease, 56, 768-780.

142. Kuhn, C., Bogard, M., Johnston, S.E., John, A., Vermote, E., Spencer, R.G.M., Dornblaser, M., Wickland, K., Striegl, R., Butman, D. 2020. Satellite and airborne remote sensing of gross primary productivity in boreal Alaskan lakes. Environmental Research Letters, doi.org/ 10.1088/1748-9326/aba46f.

141. Behnke, M.I., Stubbins, A., Fellman, J.B., Hood, E., Dittmar, T., Spencer, R.G.M. 2020. Dissolved organic matter sources in glacierized watersheds delineated through compositional and carbon isotopic modeling. Limnology & Oceanography, doi.org/10.1002/lno.11615.

140. Zhou, Y., Liu, M., Zhou, L., Jang, K.S., Xu, H., Shi, K., Zhu, G., Liu, M., Deng, J., Zhang, Y., Spencer, R.G.M., Kothawala, D.N., Jeppesen, E., Wu, F. 2020. Rainstorm events shift the molecular composition and export of dissolved organic matter in a large drinking water reservoir in China: High frequency buoys and field observations. Water Research, doi.org/ 10.1016/j.watres.2020.116471.

139. Fellman, J.B., Hood, E., Behnke, M.I., Welker, J.M., Spencer, R.G.M. 2020. Stormflows drive stream carbon concentration, and dissolved organic matter composition in coastal temperate rainforest watersheds. Journal of Geophysical Research-Biogeosciences, 125: doi.org/ 10.1029/2020JG005804.

138. Hood, E., Fellman, J.B., Spencer, R.G.M. 2020. Glacier loss impacts riverine organic carbon transport to the ocean. Geophysical Research Letters, 47, 19. 

137. Zherebker, A., Kim, S., Schmitt-Kopplin, P., Spencer, R.G.M., Lechtenfeld, O., Podgorski, D.C., Hertkorn, N., Harir, M., Nurfajin, N., Koch, B., Nikolaev, E.N., Shirshin, E.A., Berezin, S.A., Kats, D.S., Rukhovich, G.D., Perminova, I. 2020. Interlaboratory comparison of humic substances compositional space as measured by Fourier transform ion cyclotron resonance mass spectrometry (IUPAC Technical Report). Pure and Applied Chemistry, 92, 9.

136. Drake, T.W., Wagner, S., Stubbins, A., Wabakanghanzi, J.N., Dinga, J.B., Six, J., Spencer, R.G.M. 2020. Du feu a l’eau: source and flux of dissolved black carbon from the Congo River. Global Biogeochemical Cycles: doi.org/10.1029/2020GB006560.

135. Leewis, M.C., Beremont, R., Podgorski, D.C., Srinivas, A., Zito, P., Spencer, R.G.M., McFarland, J., Douglas, T.A., Conaway, C.H., Waldrop, M., Mackelprang, R. 2020. Life at the frozen limit: Microbial carbon metabolism across a later Pleistocene permafrost chronosequence. Frontiers in Microbiology, 11, 1753.

134. Casas-Ruiz, J.P., Spencer, R.G.M., Guillemette, F., von Schiller, D., Obrador, B., Podgorski, D.C., Kellerman, A.M., Hartmann, J., Gome-Gener, L., Sabater, S., Marce, R. 2020. Delineating the continuum of dissolved organic matter in temperate river networks. Global Biogeochemical Cycles: doi.org/10.1029/2019GB006495.

133. Rodriguez-Cardona, B.M., Coble, A.A., Wymore, A.S., Kolosov, R., Podgorski, D.C., Zito, P., Spencer, R.G.M., Prokushkin, A.S., McDowell, W.H. 2020. Wildfires lead to decreased carbon and increased nitrogen concentrations in upland arctic streams. Scientific Reports, 10, 8722.

132. Kellerman, A.M., Hawkings, J.R., Wadham, J.L., Kohler, T.J., Stibal, M., Grater, E., Marshall, M., Hatton, J.E., Beaton, A., Spencer, R.G.M. 2020. Glacier outflow dissolved organic matter as a window into seasonally changing carbon sources: Leverett Glacier, Greenland. Journal of Geophysical Research-Biogeosciences, 125: doi: 10.1029/ 2019JG005161.

131. Eckard, R.S., Bergamaschi, B.A., Pellerin, B., Spencer, R.G.M., Dyda, R., Hernes, P.J. 2020. Organic matter integration, overprinting, and the relative fraction of optically active organic carbon in a human-impact watershed. Frontiers in Earth Science, 8, 67.

130. Zolkos, S., Krabbenhoft, D.P., Suslova, A., Tank, S.E., McClelland, J.W., Spencer, R.G.M., Shiklomanov, A., Zhulidov, A.V., Gurtovaya, T., Zimov, N., Zimov, S., Mutter, E.A., Kutny, L., Amos, E., Holmes, R.M. 2020. Mercury export from Arctic Great Rivers. Environmental Science & Technology, 54, 4140-4148.

129. Connolly, C.T., Cardenas, M.B., Burkart, G.A., Spencer, R.G.M., McClelland, J.W. 2020. Groundwater as a major source of dissolved organic matter to Arctic coastal waters. Nature Communications, 11, 1479.

128. McDonough, L.K., Rutlidge, H., O’Carroll, D.M., Andersen, M.S., Meredith, K., Behnke, M.I., Spencer, R.G.M., McKenna, A.M., Marjo, C.E., Oudone, P., Baker, A. 2020. Characterisation of shallow groundwater dissolved organic matter in aeolian, alluvial and fractured rock aquifers. Geochimica et Cosmochimica Acta, 273, 163-176.

127. Zito, P., Podgorski, D.C., Bartges, T., Guillemette, F., Roebuck, J.A., Spencer, R.G.M., Rodgers, R.P., Tarr, M.A. 2020. Sunlight induced molecular progression of oil into oxidized soluble species, interfacial material, and dissolved organic matter. Energy & Fuels: doi: 10.1021/acs.energyfuels.9b04408.

126. Carey, J.C., Gewirtzman, J., Johnston, S.E., Kurtz, A., Tang, J., Vieillard, A.M., Spencer, R.G.M. 2020. Arctic river dissolved and biogenic silicon exports – current conditions and future changes with warming. Global Biogeochemical Cycles, 34: doi: 1029/2019GB006308.

125. Johnston, S.E., Striegl, R.G., Bogard, M.J., Dornblaser, M.M., Butman, D.E., Kellerman, A.M., Wickland, K.P., Podgorski, D.C., Spencer, R.G.M. 2020. Hydrologic connectivity determines dissolved organic matter biogeochemistry in northern high-latitude lakes. Limnology and Oceanography: doi: 10.1002/lno.11417.

124. McDonough, L.K., O’Carroll, D.M., Meredith, K., Andersen, M.S., Brugger, C., Huang, H., Rutlidge, H., Behnke, M.I., Spencer, R.G.M., McKenna, A., Marjo, C.E., Oudone, P., Baker, A. 2020. Changes in groundwater dissolved organic matter character in a coastal sand aquifer due to rainfall recharge. Water Research, 169, 115201.

123. Kellerman, A.M., Arellano, A., Podgorski, D.C., Martin, E.E., Martin, J.B., Deuerling, K.M., Bianchi, T.S., Spencer, R.G.M. 2019. Fundamental drivers of dissolved organic matter composition across an Arctic effective precipitation gradient. Limnology and Oceanography: doi: 10.1002/lno.11385.

122. Johnston, S.E., Bogard, M.J., Rogers, J.A., Butman, D., Striegl, R.G., Bornblaser, M., Spencer, R.G.M. 2019. Constraining dissolved organic matter sources and temporal variability in a model sub-Arctic lake. Biogeochemistry, 146, 271-292.

121. Zhou, Y., Zhou, L., Zhang, Y., de Souza, J.G., Podgorski, D.C., Spencer, R.G.M., Jeppesen, E., Davidson, T.A. 2019. Autochthonous dissolved organic matter potentially fuels methane ebullition from experimental lakes. Water Research, 166, 115048.

120. Wagner, S., Brandes, J., Spencer, R.G.M., Ma, K., Rosengard, S.Z., Moura, J.M.S., Stubbins, A. 2019. Isotopic composition of oceanic dissolved black carbon reveals non-riverine source. Nature Communications, 10, 5064.

119. Drake, T.W., Podgorski, D.C., Dinga, B., Chanton, J., Six, J., Spencer, R.G.M. 2019. Land-use controls on carbon biogeochemistry in lowland streams of the Congo Basin. Global Change Biology: doi: 10.1111/gcb.14889.

118. Textor, S.R., Wickland, K.P., Podgorski, D.C., Johnston, S.E., Spencer, R.G.M. 2019. Dissolved organic carbon turnover in permafrost-influenced watersheds of Interior Alaska: Molecular insights and the priming effect. Frontiers in Earth Science, 24: doi: 10.3389/feart.2019.00275.

117. Harfmann, J.L., Guillemette, F., Kaiser, K., Spencer, R.G.M., Chuang, C.Y., Hernes, P.J. 2019. Convergence of terrestrial dissolved organic matter composition and the role of microbial buffering in aquatic ecosystems. Journal of Geophysical Research-Biogeosciences, 124: doi: 10.1029/2018JG004997.

116. Zhou, Y., Zhou, L., He, X., Jang, K.S., Yao, X., Hu, Y., Zhang, Y., Li, X., Spencer, R.G.M., Brookes, J.D., Jeppesen, E. 2019. Variability in dissolved organic matter composition and biolability across gradients of glacial coverage and distance from glacial terminus on the Tibetan Plateau. Environmental Science & Technology, 53, 12207-12217.

115. Wadham, J.L., Hawkings, J.R., Tarasov, L., Gregoire, L.J., Spencer, R.G.M., Gutjahr, M., Ridgwell, A., Kohfeld, K.E. 2019. Ice sheets matter for the global carbon cycle. Nature Communications, 10, 3567.

114. Bogard, M.J., Johnston, S.E., Dornblaser, M.M., Spencer, R.G.M., Striegl, R.G., Butman, D.E. 2019. Extreme rates and diel variability of planktonic respiration in a shallow sub-arctic lake. Aquatic Sciences, 81, 60-68.

113. Zherebker, A., Podgorski, D.C., Kholodov, V.A., Orlov, A.A., Yaroslavtseva, N.V., Kharybin, O., Kholodov, A., Spector, V., Spencer, R.G.M., Nikolaev, E., Perminova, I.V. 2019. The molecular composition of humic substances isolated from Yedoma permafrost and alas cores in the Eastern Siberian Arctic as measured by ultrahigh resolution mass spectrometry. Journal of Geophysical Research-Biogeosciences, 124: doi: 10.1029/2018JG004743

112. Drake, T.W., Van Oost, K., Barthel, M., Hoyt, A.M., Podgorski, D.C., Six, J., Boeckx, P., Trumbore, S.E., Ntaboba, L.C., Spencer, R.G.M. 2019. Mobilization of aged and biolabile soil carbon by tropical deforestation.Nature Geoscience, 12, 541-546.

111. Zito, P., Podgorski, D.C., Johnson, J., Chen, H., Rodgers, R.P., Guillemette, F., Kellerman, A.M., Spencer, R.G.M., Tarr, M.A. 2019. The molecular-level composition and acute toxicity of photosolubilized petrogenic carbon. Environmental Science & Technology, 53, 8235-8243.

110. Spencer, R.G.M., Kellerman, A.M., Podgorski, D.C., Macedo, M.N., Jankowski, K.J., Nunes, D., Neill, C. 2019. Identifying the molecular signatures of agricultural expansion in Amazonian headwater streams. Journal of Geophysical Research-Biogeosciences, 124: doi: 10.1029/2018JG004910.

109. Heslop, J.K., Winkel, M., Walter Anthony, K.M., Spencer, R.G.M., Podgorski, D.C., Zito, P., Kholodov, A., Zhang, M., Liebner, S. 2019. Increasing organic carbon biolability with depth in yedoma permafrost: ramifications for future climate change. Journal of Geophysical Research-Biogeosciences, 124: doi: 10.1029/2018JG004712.

108. Zhou, L., Zhou, Y., Hu, Y., Cai, J., Liu, X., Bai, C., Tang, X., Zhang, Y., Jang, J.S., Spencer, R.G.M., Jeppesen, E. 2019. Microbial production and consumption of dissolved organic matter in glacial ecosystems on the Tibetan Plateau. Water Research, 160, 18-28.

107. Zhou, Y., Li, Y., Yao, X., Ding, W., Zhang, Y., Jeppesen, E., Zhang, Y., Podgorski, D.C., Chen, C., Ding, Y., Wu, H., Spencer, R.G.M. 2019. Response of chromophoric dissolved organic matter dynamics to tidal oscillations and anthropogenic disturbances in a large subtropical estuary. Science of the Total Environment, 662, 769-778.

106. Bogard, M.J., Kuhn, C.D., Johnston, S.E., Striegl, R.G., Holtgrieve, G.W., Dornblaser, M.M., Spencer, R.G.M., Wickland, K.P., Butman, D.E. 2019. Negligible cycling of terrestrial carbon in many lakes of the arid circumpolar landscape. Nature Geoscience, 12, 180-185.

105. Yates, C.A., Johnes, P.J., Spencer, R.G.M. 2019. Characterisation of treated effluent from four commonly employed wastewater treatment facilities: A UK case study. Journal of Environmental Management, 232, 919-927.

104. Hemingway, J.D., Spencer, R.G.M., Podgorski, D.C., Zito, P., Sen, I.S., Galy, V.V. 2019. Glacier meltwater and monsoon precipitation drive Upper Ganges Basin dissolved organic matter composition. Geochimica et Cosmochimica Acta, 244, 216-228.

103. Wang, Y., Spencer, R.G.M., Podgorski, D.C., Kellerman, A.M., Rashid, H., Zito, P., Xiao, W., Wei, D., Yang, Y., Xu, Y. 2018. Spatiotemporal transformation of dissolved organic matter along an alpine stream flowpath on the Qiinghai-Tibetan Plateau: importance of source and permafrost degradation. Biogeosciences, 15, 6637-6648.

102. Drake, T.W., Holmes, R.M., Zhulidov, A.V., Gurtovaya, T., Raymond, P.A., McClelland, J.W., Spencer, R.G.M.2018. Multi-decadal climate-induced changes in arctic tundra lake geochemistry and geomorphology. Limnology and Oceanography, 64: doi: 10.1002/ lno.11015.

101. Bao, H., Yi, Y., Wang, C., Spencer, R.G.M., Deng, X., Guo, W. 2018. Dissolved organic matter in coastal rainwater: Concentration, bioavailability, and depostional flux to seawater in southeastern China. Marine Chemistry, 204, 48-55.

100. Textor, S.R., Guillemette, F., Zito, P., Spencer, R.G.M. 2018. An assessment of dissolved organic carbon biodegradability and priming in blackwater systems. Journal of Geophysical Research-Biogeosciences 123: doi: 10.1029/2018JG004470.

99. Luzius, C., Guillemette, F., Podgorski, D.C., Kellerman, A.M., Spencer, R.G.M. 2018. Drivers of dissolved organic matter in the vent and major conduits of the world’s largest freshwater spring. Journal of Geophysical Research-Biogeosciences 123: doi: 10.1029/2017JG004327.

98. Zhou, Y., Xiao, Q., Yao, X., Zhang, Y., Zhang, M., Shi, K., Lee, X., Podgorski, D.C., Qin, B., Spencer, R.G.M., Jeppesen, E. 2018. Accumulation of terrestrial dissolved organic matter potentially enhances dissolved methane levels in eutrophic lake Taihu, China. Environmental Science & Technology, 52, 10297-10306.

97. Drake, T.W., Tank, S.E., Zhulidov, A.V., Holmes, R.M., Gurtovaya, T., Spencer, R.G.M. 2018. Increasing alkalinity export from large Russian rivers. Environmental Science & Technology, 52, 8302-8308.

96. Johnston, S.E., Shorina, N., Bulygina, E., Vorobjeva, T., Chupakova, A., Klimov, S.I., Kellerman, A.M., Guillemette, F., Shiklomanov, A., Podgorski, D.C., Spencer, R.G.M. 2018. Flux and seasonality of dissolved organic matter from the Northern Dvina (Severnaya Dvina) River, Russia. Journal of Geophysical Research-Biogeosciences 123: doi: 10.1002/2017JG004337.

95. Drake, T.W., Guillemette, F., Hemingway, J.D., Chanton, J.P., Podgorski, D.C., Zimov, N.S., Spencer, R.G.M. 2018. The ephemeral signature of permafrost carbon in an arctic fluvial network. Journal of Geophysical Research-Biogeosciences 123: doi: 10.1029/ 2017JG004311.

94. Burke, A., Present, T.M., Paris, G., Rae, E.C.M., Sandilands, B.H., Gaillardet, J., Peucker-Ehrenbrink, B., Fischer, W.W., McClelland, J.W., Spencer, R.G.M., Voss, B.M., Adkins, J.F. 2018. Sulfur isotopes in rivers: Insights into global weathering budgets, pyrite oxidation, and the modern sulfur cycle. Earth and Planetary Science Letters, 496, 168-177.

93. Podgorski, D.C., Zito, P., McGuire, J.T., Martinovic-Weigelt, D., Cozzarelli, I.M., Bekins, B.A., Spencer, R.G.M.2018. Examining natural attention and acute toxicity of petroleum-derived dissolved organic matter with optical spectroscopy. Environmental Science & Technology, 52, 6157-6166.

92. Wang, Y., Xu, Y., Spencer, R.G.M., Zito, P., Kellerman, A., Podgorski, D., Xiao, W., Wei, H., Yang, R.Y. 2018. Selective leaching of dissolved organic matter from alpine permafrost soils on the Qinghai-Tibetan Plateau. Journal of Geophysical Research-Biogeosciences 123: 1005-1016.

91. Kellerman, A.M., Guillemette, F., Podgorski, D.C., Aiken, G.R., Butler, K.D., Spencer, R.G.M. 2018. Unifying concepts linking dissolved organic matter composition to persistence in aquatic ecosystems. Environmental Science & Technology, 52, 2538-2548.

90. Bauters, M., Boeckx, P., Drake, T.W., Verbeeck, H., Bode, S., Herve-Fernandez, P., Zito, P., Podgorski, D.C., Boyemba, F., Makelele, I., Ntaboba, L.C., Spencer, R.G.M., Boeckx, P. 2018. High fire-derived nitrogen deposition on central African forests. Proceedings of the National Academy of Sciences, 115: 549-554.

89. Drake, T.W., Raymond, P.A., Spencer, R.G.M. 2017. Terrestrial carbon inputs to inland waters: A current synthesis of estimates and uncertainty. Limnology and Oceanography Letters: doi: 10.1002/lol2.10055.

88. Pelletier, A.R., Castello, L., Zhulidov, A.V., Gurtovaya, T.Y., Robarts, R.D., Holmes, R.M., Zhulidov, D.A., Spencer, R.G.M. 2017. Temporal and longitudinal mercury trends in burbot (Lota lota) in the Russian Arctic. Environmental Science & Technology 51: 13436-13442.

87. Eckard, R.S., Pellerin, B.A., Bergamaschi, B.A., Bachand, P.A.M., Bachand, S.M., Spencer, R.G.M., Hernes, P.J. 2017. Dissolved organic matter compositional change and biolability during two storm runoff events in a small agricultural watershed. Journal of Geophysical Research-Biogeosciences 122: 2634-2650.

86. Matiasek, S.J., Pellerin, B.A., Spencer, R.G.M., Bergamaschi, B.A., Hernes, P.J. 2017. Irrigation as a fuel pump to freshwater ecosystems. Biogeochemistry 136: 71-90.

85. Hemingway, J.D., Schefuss, E., Spencer, R.G.M., Dinga, J.B., Eglinton, T.I., McIntyre, C., Galy, V.V. 2017. Hydrologic controls on seasonal and inter-annual variability of Congo River particulate organic matter source and reservoir age. Chemical Geology 466: 454-465.

84. Wagner, S., Brandes, J., Goranov, A., Drake, T.W., Spencer, R.G.M., Stubbins, A. 2017. Online quanitification and compound-specific stable isotopic analysis of blackcarbon in environmental matrices via liquid chromatography-isotope ratio mass spectrometry. Limnology and Oceanography: Methods: doi: 10.1002/lom3.10219.

83. Guillemette, F., Bianchi, T.S., Spencer, R.G.M. 2017. Old before your time: Ancient carbon incorporation in contemporary aquatic foodwebs. Limnology and Oceanography 62: 13929242.

82. Stubbins, A., Mann, P.J., Powers, L., Bittar, T.B., Dittmar, T., McIntyre, C., Eglinton, T.I., Zimov, N., Spencer, R.G.M. 2017. Low photolability of yedoma permafrost dissolved organic carbon. Journal of Geophysical Research-Biogeosciences 122: 200-211.

81. Zhou, Y., Ma, Y., Zhang, Y., Qin B., Jeppesen, E., Shi, K., Brookes, J.D., Spencer, R.G.M., Zhu, G., Gao, G. 2017. Improving water quality in China: Environmental investment pays dividends. Water Research 118: 152-159.

80. Hernes, P.J., Spencer, R.G.M., Dyda, R.Y., O’Geen, A.T., Dahlgren, R.A. 2017. The genesis and exodus of vascular plant DOM from an oak woodland. Frontiers in Earth Science 5: 9.

79. Shmelev, D., Veremeeva, A., Kraev, G., Kholodov, A., Spencer, R.G.M., Walker, W.S., Rivkina, E. 2017. Estimation and seinsitivity of carbon storage in permafrost of North-Eastern Yakutia. Permafrost and Periglacial Processes 28: 379-390.

78. Riedel, T., Zark, M., Vahatalo, A.V., Niggemann, J., Spencer, R.G.M., Hernes, P.J., Dittmar, T. 2016. Molecular signatures of biogeochemical transformations in dissolved organic matter from ten World Rivers. Frontiers in Earth Science 4: 85.

77. Bittar, T.B., Berger, S.A., Birsa, L.M., Walters, T.L., Thompson, M.E., Spencer, R.G.M., Mann, E.L., Stubbins, A., Frischer, M.E., Brandes, J.A. 2016. Seasonal dynamics of dissolved, particulate and microbial components of a tidal saltmarsh-dominated estuary under contrasting levels of freshwater discharge. Estuarine, Coastal and Shelf Science182: 72-85.

76. Yates, C.A., Johnes, P.J., Spencer, R.G.M. 2016. Assesing the drivers of dissolved organic matter export from two contrasting lowland catchments, U.K. Science of the Total Environment 569: 1330-1340.

75. O’Donnell, J.A., Aiken, G.R., Butler, K.D., Guillemette, F., Podgorski, D.C., Spencer, R.G.M. 2016. DOM composition and transformation in boreal forest soils: The effects of temperature and organic-horizon decomposition state. Journal of Geophysical Research-Biogeosciences 121: 2727-2744.

74. Bischoff, J., Sparkes, R.B., Spencer, R.G.M., Semiletov, I.P., Dudarev, O.V., van Dongen, B.E., Talbot, H.M. 2016. Source, transport and fate of soil organic matter inferred from microbial biomarker lipids on the East Siberian Arctic Shelf. Biogeosciences 13: 4899-5001.

73. Oliver, A.A., Spencer, R.G.M., Deas, M.L., Dahlgren, R.A. 2016. Impacts of seasonality and anthropogenic impoundments on dissolved organic matter dynamics in the Klamath River (Oregon/California, USA). Journal of Geophysical Research-Biogeosciences 121: 1946-1958.

72. Spencer, R.G.M., Hernes, P.J., Dinga, B., Wabakanghanzi, J.N., Drake, T.W., Six, J. 2016. Origins, seasonality and fluxes of organic matter in the Congo River. Global Biogeochemical Cycles 30: 1105-1121.

71. Henchiri, S., Gaillardet, J., Dellinger, M., Bouchez, J., Spencer, R.G.M. 2016. Temporal variations of dissolved lithium isotopic signatures in rivers reveal contrasted weathering regimes in low-relief Central African settings. Geophysical Research Letters 43: 4391-4399.

70. Alsdorf, D., Beighley, E., Laraque, A., Lee, H., Tshimanga, R., O’Loughlin, F., Mahe, G., Dinga, B., Moukandi, G., Spencer, R.G.M. 2016. Opportunities for hydrologic research in the Congo Basin. Reviews of Geophysics 54: 1-32.

69. Medeiros, P., Seidel, M., Niggemann, J., Spencer, R.G.M., Hernes, P.J., Yager, P.L., Miller, W.L., Dittmar, T., Hansell, D.A. 2016. A novel molecular approach for tracing terrigenous dissolved organic matter into the deep ocean. Global Biogeochemical Cycles 30: 689-700.

68. McClelland, J.W., Holmes, R.M., Peterson, B.J., Raymond, P.A., Striegl, R.G., Zhulidov, A.V., Zimov, S.A., Zimov, N., Tank, S.E., Spencer, R.G.M., Staples, R., Gurtovaya, T.Y., Griffin, C.G. 2016. Particulate organic carbon and nitrogen export from major Arctic rivers. Global Biogeochemical Cycles 30: 629-643.

67. Cao, X., Aiken, G.R., Spencer, R.G.M., Butler, K., Mao, J., Schmidt-Rohr, K. 2016. Novel insights from NMR spectroscopy into seasonal changes in the composition of dissolved organic matter exported to the Bering Sea by the Yukon River. Geochimica et Cosmochimica Acta 181: 72-88.

66. Abbott, B.W. and 99 co-authors including Spencer, R.G.M. 2016. Biomass offsets little or none of permafrost carbon release from soils, streams, and wildfire: an expert assessment. Environmental Research Letters 11: 034014.

65. Mann, P.J., Spencer, R.G.M., Hernes, P.J., Six, J., Aiken, G.R., Tank, S.E., McClelland, J.W., Butler, K.D., Dyda, R.Y., Holmes, R.M. 2016. Pan-arctic trends in terrestrial dissolved organic matter from optical measurements. Frontiers in Earth Science 4: 25.

64. Spencer-Jones, C.L., Wagner, T., Dinga, B.J., Schefuss, E., Mann, P.J., Poulsen, J.R., Spencer, R.G.M., Wabakamghanzi, J.N., Talbot, H.M. 2015. Bacteriohopanepolyols in tropical soils and sediments from the Congo River catchment area. Organic Geochemistry 89: 1-13.

63. Vonk, J.E., Tank, S.E., Mann, P.J., Spencer, R.G.M., Treat, C.C., Striegl, R.G., Abbott, B.W., Wickland, K.P. 2015. Biodegradability of dissolved organic carbon in permafrost soils and aquatic systems: a meta-analysis. Biogeosciences 12: 6915-6930.

62. Drake, T.W., Wickland, K.P., Spencer, R.G.M., McKnight, D.M., Striegl, R.G. 2015. Ancient low-molecular-weight organic acids in permafrost fuel rapid carbon dioxide production upon thaw. Proceedings of the National Academy of Sciences 112: 13946-13951.

61. Logvinova, C.L., Frey, K.E., Mann, P.J., Stubbins, A., Spencer, R.G.M. 2015. Assessing the potential impacts of declining Arctic sea ice cover on the photochemical degradation of dissolved organic matter in the Chukchi and Beaufort Seas. Journal of Geophysical Research-Biogeosciences 11: 2326-2344.

60. Fellman, J.B., Hood, E., Raymond, P.A., Stubbins, A., Spencer, R.G.M. 2015. Spatial variation in the origin of dissolved organic carbon in snow on the Juneau Icefield, southeast Alaska. Environmental Science and Technology49: 11492-11499.

59. Mann, P.J., Eglinton, T.I., McIntyre, C.P., Zimov, N., Davydova, A., Vonk, J.E., Holmes, R.M., Spencer, R.G.M.2015. Utilization of ancient permafrost carbon in headwaters of Arctic fluvial networks. Nature Communications 6: doi:10.1038/ncomms8856.

58. Spencer, R.G.M., Mann, P.J., Dittmar, T., Eglinton, T.I., McIntyre, C., Holmes, R.M., Zimov, N., Stubbins, A. 2015. Detecting the signature of permafrost thaw in Arctic rivers. Geophysical Research Letters 42: doi:10.1002/2015GL063498.

57. Hood, E., Battin, T.J., Fellman, J., O’Neel, S., Spencer, R.G.M. 2015. Storage and release of organic carbon from glaciers and ice sheets. Nature Geoscience 8: 91-96.

56. Stubbins, A., Spencer, R.G.M., Mann, P.J., Holmes, R.M., McClelland, J., Niggemann, J., Dittmar, T. 2015. Utilizing colored dissolved organic matter to derive dissolved black carbon export by Arctic rivers. Frontiers in Earth Science 3: 63.

55. Voss, B.M., Peucker-Ehrenbrink, B., Eglinton, T.I., Spencer, R.G.M., Bulygina, E., Galy, V., Lamborg, C.H., Ganguli, P.M., Montlucon, D.B., Marsh, S., Gillies, S.L., Fanslau, J., Epp, A., Luymes, R. 2015. Seasonal hydrology drives rapid shifts in the flux and composition of dissolved and particulate organic carbon and major and trace ions in the Fraser River, Canada. Biogeosciences 12: 5597-5618.

54. McClelland, J.W., Tank, S.E., Spencer, R.G.M., Shiklomanov, A.I. 2015. Coordination and sustainability of river observing activities in the Arctic. Arctic 68: 1-10.

53. Sun, L., Spencer, R.G.M., Hernes, P.J., Dyda, R.Y., Moper, K. 2015. A comparison of a simplified cupric oxide oxidation HPLC method with the traditional GC-MS metod for characterization of lignin phenolics in environmental samples. Limnology and Oceanography: Methods 13: 1-8.

52. Spencer, R.G.M., Guo, W., Raymond, P.A., Dittmar, T., Hood, E., Fellman, J., Stubbins, A. 2014. Source and biolability of ancient dissolved organic matter in glacier and lake ecosystems on the Tibetan Plateau. Geochimica et Cosmochimica Acta 142: 64-74.

51. Fellman, J.B., Hood, E., Spencer, R.G.M., Stubbins, A., Raymond, P.A. 2014. Watershed glacier coverage influences dissolved organic matter biogeochemistry in coastal watersheds of southeast Alaska. Ecosystems 17: 1014-1025.

50. Fellman, J.B., Spencer, R.G.M., Raymond, P.A., Petit, N., Skrzypek, G., Hernes, P.J., Grierson, P. 2014. Dissolved organic carbon biolability decreases along with its modernization in fluvial networks in an ancient landscape. Ecology 95: 2622-2632.

49. Helms, J.R., Mao, J., Stubbins, A., Schmidt-Rohr, K., Spencer, R.G.M., Hernes, P.J., Mopper, K. 2014. Loss of optical and molecular indicators of terrigenous dissolved organic matter during long-term photobleaching. Aquatic Sciences 76: 353-373.

48. Talbot, H.M., Handley, L., Spencer-Jones, C., Dinga, B., Schefuss, E., Mann, P.J., Spencer, R.G.M., Wagner, T. 2014. Variability in aerobic methane oxidation over the past 1.2 Myrs recorded in microbial biomarker signatures from Congo fan sediments. Geochimica et Cosmochimica Acta 133: 387-401.

47. Spencer, R.G.M., Raymond, P.A., Guo, W., Dittmar, T., Stubbins, A. 2014. Seasonal variability of organic matter composition in an Alaskan glacier outflow: insights into glacier carbon sources. Environmental Research Letters 9: 055005.

46. Aiken, G.R., Spencer, R.G.M., Striegl, R.G., Schuster, P.F., Raymond, P.A. 2014. The influences of glacier melt and permafrost thaw on the age of dissolved organic carbon in the Yukon River basin. Global Biogeochemical Cycles 28: 525-537.

45. Mann, P.J., Spencer, R.G.M., Bienvenu, D.J., Poulsen, J.R., Hernes, P.J., Fiske, G., Salter, M.E., Wang, Z.A., Hoering, K.A., Six, J., Holmes, R.M. 2014. The biogeochemistry of carbon across a gradient of streams and rivers within the Congo Basin. Journal of Geophysical Research-Biogeosciences 119: 687-702.

44. Mann, P.J., Sobczak, W., LaRue, M., Bulygina, E., Davydova, A., Vonk, J.E., Schade, J., Davydov, S., Zimov, N., Holmes, R.M., Spencer, R.G.M. 2014. Evidence for key enzymatic latches on metabolism of Arctic river organic matter. Global Change Biology 20: 1089-1100.

43. Jex, C.N., Pate, G.H., Blyth, A.J., Spencer, R.G.M., Hernes, P.J., Khan, S.J., Baker, A. 2014. Lignin biogeochemistry: from modern processes to Quaternary archives. Quaternary Science Reviews 87: 46-59.

42. Marin-Spiotta, E., Gruley, K.E., Crawford, J., Atkinson, E.E., Miesel, J.R., Greene, S., Cardona-Correa, C., Spencer, R.G.M. 2014. Paradigm shifts in soil organic matter research affect aquatic carbon turnover interpretations. Biogeochemistry 117: 279-297.

41. Pereira, R., Bovolo, C.I., Spencer, R.G.M., Hernes, P.J., Tipping, E., Vieth-Hillebrand, A., Pedentchouk, N., Chappell, N.A., Parkin, G., Wagner, T. 2014. Mobilization of optically invisible dissolved organic matter in response to rainstorm events in a tropical headwater river. Geophysical Research Letters 41: 1202-1208.

40. Castello, L., Zhulidov, A.V., Gurtovaya, T. Y., Robarts, R.D., Holmes, R.M., Zhulidov, D.A., Lysenko, V.S., Spencer, R.G.M. 2014. Low and declining mercury in Arctic Russian rivers. Environmental Science and Technology 48: 747-752.

39. Hernes, P.J., Spencer, R.G.M., Dyda, R.Y., Pellerin, B.A., Bachand, P.A.M., Bergamaschi, B.A. 2013. DOM composition in an agricultural watershed: Assessing patterns and variability in the context of spatial scales. Geochimica et Cosmochimica Acta 121: 599-610.

38. Vonk, J.E., Mann, P.J., Dowdy, K.L., Davydova, A., Davydov, S., Zimov, N., Spencer, R.G.M., Bulygina, E., Eglinton, T.I., Holmes, R.M. 2013. Ancient Yedoma carbon loss amplified by ice wedge thaw. Environmental Research Letters 8: 035023.

37. Spencer, R.G.M., Aiken, G.R., Dornblaser, M.M., Butler, K.D., Holmes, R.M., Fiske, G., Mann, P.J., Stubbins, A. 2013. Chromophoric dissolved organic matter export from U.S. rivers. Geophysical Research Letters 40: doi:10.1002/grl.50357.

36. Vonk, J.E., Mann, P.J., Davydov, S., Davydova, A., Spencer, R.G.M., Schade, J., Sobczak, W., Zimov, N., Zimov, S., Bulygina, E., Eglinton, T.I., Holmes, R.M. 2013. High biolability of ancient permafrost carbon upon thaw. Geophysical Research Letters 40: doi:10.1002/grl.50348.

35. Jaffe, R., Ding, Y., Niggemann, J., Vahatalo, A.V., Stubbins, A., Spencer, R.G.M., Campbell, J., Dittmar, T. 2013 Global charcoal mobilization from soils via dissolution and riverine transport to the oceans. Science 340: 345-347.

34. Huang, L., Zhuo, J., Guo, W., Spencer, R.G.M., Zhang, Z., Xu, J. 2013. Tracing organic matter removal in polluted coastal waters via floating bed phytoremediation. Marine Pollution Bulletin 71: 74-82.

33. Wang, Z.A., Dinga, B., Mann, P.J., Hoering, K., Spencer, R.G.M., Holmes, R.M. 2013. Inorganic carbon speciation and fluxes in the Congo River. Geophysical Research Letters 40: doi:10.1002/grl.50160.

32. Wickland, K.P., Aiken, G.R., Butler, K.D., Dornblaser, M.M., Spencer, R.G.M., Striegl, R.G. 2012. Bioavailability of dissolved organic matter in the Yukon River Basin – Seasonal and spatial variability and influence of carbon quality and nutrients. Global Biogeochemical Cycles 26: GB0E03, doi:10.1029/2012GB004342.

31. Spencer, R.G.M., Butler, K.D., Aiken, G.R. 2012. Dissolved organic carbon and chromophoric dissolved organic matter properties of rivers in the U.S.A. Journal of Geophysical Research – Biogeosciences 117: G03001, doi:10.1029/2011JG001928.

30. Bouillon, S., Yambele, A., Spencer, R.G.M., Gillikin, D.P., Hernes, P.J., Six, J., Merckx, R., Borges, A.V. 2012. Organic matter sources, fluxes and greenhouse gas exchange in the Oubangui River (Congo River Basin). Biogeosciences 9: 2045-2062.

29. Stubbins, A., Hood, E., Raymond, P.A., Aiken, G.R., Sleighter, R.L., Hernes, P.J., Butman, D., Hatcher, P.G., Striegl, R.G., Schuster, P., Abdulla, H.A.N., Spencer, R.G.M. 2012. Anthropogenic aerosols as a source of glacier derived dissolved organic matter. Nature Geoscience 5: 198-201.

28. Spencer, R.G.M., Hernes, P.J., Aufdenkampe, A.K., Baker, A., Gulliver, P., Stubbins, A., Aiken, G.R., Dyda, R.Y., Butler, K.D., Mwamba, V.L., Mangangu, A.M., Wabakanghanzi, J.N., Six, J. 2012. An initial investigation into the organic matter biogeochemistry of the Congo River. Geochimica et Cosmochimica Acta 84: 614-627.

27. Mann, P.J., Davidova, A., Zimov, N., Spencer, R.G.M., Davydov, S., Bulygina, E., Zimov, S., Holmes, R.M. 2012. Controls on the composition and lability of dissolved organic matter in Siberia’s Kolyma River Basin. Journal of Geophysical Research – Biogeosciences 117: G01028, doi:10.1029/2011JG001798.

26. Krupa, M., Spencer, R.G.M., Tate, K.W., Six, J., van Kessel, C., Linquist, B.A. 2012. Controls on dissolved organic carbon composition and export from rice-dominated systems. Biogeochemistry 108: 447-466.

25. Fellman, J.R., Hood, E., Spencer, R.G.M. 2010. Fluorescence spectroscopy opens new windows into dissolved organic matter dynamics in freshwater ecosystems: A review. Limnology and Oceanography 55: 2452-2462.

24. Murphy, K.R., Butler, K.D., Spencer, R.G.M., Stedmon, C.A., Boehme, J.R., Aiken, G.R. 2010. Measurement of dissolved organic matter fluorescence in aquatic environments: An interlaboratory comparison. Environmental, Science and Technology 44: 9405-9412.

23. Spencer, R.G.M., Hernes, P.J., Ruf, R., Baker, A., Dyda, R.Y., Stubbins, A., Six, J. 2010. Temporal controls on dissolved organic matter and lignin biogeochemistry in a pristine tropical river, Democratic Republic of Congo. Journal of Geophysical Research – Biogeosciences 115: G03013, doi: 10.1029/2009JG001180.

22. Fellman, J., Spencer, R.G.M., Hernes, P.J., Edwards, R., D’Amore, D., Hood, E. 2010. The impact of glacier runoff on the biodegradability and chemical quality of terrigenous dissolved organic matter in near-shore marine ecosystems. Marine Chemistry 121: 112-122.

21. Stubbins, A., Spencer, R.G.M., Chen, H., Hatcher, P.G., Mopper, K., Hernes, P.J., Mwamba, V.L., Mangangu, A.M., Wabakanghanzi, J.N., Six, J. 2010. Illuminated darkness: the molecular signatures of Congo River dissolved organic matter and its photochemical alteration as revealed by ultrahigh precision mass spectrometry. Limnology and Oceanography 55: 1467-1477.

20. Spencer, R.G.M., Aiken, G.R., Dyda, R.Y., Butler, K.D., Bergamaschi, B.A. Hernes, P.J. 2010. Comparison of XAD with other dissolved lignin isolation techniques and a compilation of analytical improvements for the analysis of lignin in aquatic settings. Organic Geochemistry 41: 445-453

19. Pellerin, B.A., Hernes, P.J., Saraceno, J.F., Spencer, R.G.M., Bergamaschi, B.A. 2010. Microbial degradation of plant leachate alters lignin phenols and trihalomethane precursors. Journal of Environmental Quality 39: 946-954.

18. Steenwerth, K.L., Pierce, D.L., Carlisle, E.A., Spencer, R.G.M., Smart, D.R. 2010. A vineyard agroecosystem: Disturbance and precipitation affect soil respiration under Mediterranean conditions. Soil Science Society of America Journal 74: 231-239.

17. Hood, E., Fellman, J., Spencer, R.G.M., Hernes, P.J., Edwards, R., D’Amore, D., Scott, D. 2009. Glaciers as a source of ancient, labile organic matter to the marine environment. Nature 462: 1044-1047, doi:10.1038/nature08580.

16. Hernes, P.J., Bergamaschi, B.A., Eckard, R.S., Spencer, R.G.M. 2009. Fluorescence-based proxies for lignin in freshwater dissolved organic matter. Journal of Geophysical Research – Biogeosciences 114: G00F03,doi:10.1029/2009JG000938.

15. Spencer, R.G.M., Stubbins, A., Hernes, P.J., Baker, A., Mopper, K., Aufdenkampe, A.K., Dyda, R.Y., Mwamba, V.L., Mangangu, A.M., Wabakanghanzi, J.N., Six, J. 2009. Photochemical degradation of dissolved organic matter and dissolved lignin phenols from the Congo River. Journal of Geophysical Research – Biogeosciences 114: G03010, doi:10.1029/2009JG000 968.

14. Spencer, R.G.M., Aiken, G.R., Butler, K.D., Dornblaser, M.M., Striegl, R.G., Hernes, P.J. 2009. Utilizing chromophoric dissolved organic matter measurements to derive export and reactivity of dissolved organic carbon exported to the Arctic Ocean: A case study of the Yukon River, Alaska. Geophysical Research Letters 36: L06401, doi:10.1029/ 2008GL036831.

13. Pellerin, B.A., Downing, B.D., Kendall, C., Dahlgren, R.A., Kraus, T.E.C., Spencer, R.G.M., Bergamaschi, B.A. 2009. Assessing the sources and magnitude of diurnal nitrate variability in the San Joaquin River (California) with an in-situ optical nitrate sensor and dual nitrate isotopes. Freshwater Biology 54: 376-387.

12. Hernes, P.J., Spencer, R.G.M., Dyda, R.Y., Pellerin, B.A., Bachand, P.A.M., Bergamaschi, B.A. 2008. The role of hydrologic regimes on dissolved organic carbon composition in an agricultural watershed. Geochimica et Cosmochimica Acta 72: 5266-5277.

11. Spencer, R.G.M., Aiken, G.R., Wickland, K.P., Striegl, R.G., Hernes, P.J. 2008. Seasonal and spatial variability in dissolved organic matter quantity and composition from the Yukon River Basin, Alaska. Global Biogeochemical Cycles 22: GB4002, doi:10.1029/ 2008GB003231.

10. Kraus, T.E.C., Bergamachi, B.A., Hernes, P.J., Spencer, R.G.M., Stepanauskas, R., Kendall, C., Losee, R., Fujii, R. 2008. Assessing the contribution of wetlands and subsided islands to dissolved organic matter and disinfection byproduct precursors in the Sacramento-San Joaquin River Delta: A geochemical approach. Organic Geochemistry 39: 1302-1318.

9. Ahad, J.M.E., Barth, J.A.C., Ganeshram, R., Spencer, R.G.M., Uher G. 2008. Controls on carbon cycling in two contrasting temperate zone estuaries: the Tyne and Tweed, U.K. Estuarine, Coastal and Shelf Science 78: 685-693.

8. Baker, A., Bolton, L., Newson, M., Spencer, R.G.M. 2008. Spectrophotometric properties of surface water dissolved organic matter in an afforested upland peat catchment. Hydrological Processes 22: 2325-2336.

7. Spencer, R.G.M., Pellerin, B.A., Bergamaschi, B.A., Downing, B.D., Kraus, T.E.C., Dahlgren, R.A., Smart D.R., Hernes, P.J. 2007. Diurnal variability in riverine dissolved organic matter composition determined by in-situ optical measurements (San Joaquin, California, U.S.A.). Hydrological Processes 21: 3181-3189.

6. Spencer, R.G.M., Ahad, J.M.E., Baker, A., Cowie, G.L., Ganeshram, R., Upstill-Goddard, R.C., Uher, G. 2007. The estuarine mixing behaviour of peatland derived dissolved organic carbon and its relationship to chromophoric dissolved organic matter in two North Sea estuaries (U.K.). Estuarine, Coastal and Shelf Science 74: 131-144.

5. Spencer, R.G.M., Bolton, L. Baker A. 2007. Freeze/thaw and pH effects on freshwater dissolved organic matter fluorescence and absorbance properties at a number of U.K. locations. Water Research 41: 2941-2950.

4. Spencer, R.G.M., Baker, A., Ahad, J.M.E., Cowie, G.L., Ganeshram, R., Upstill-Goddard, R.C., Uher, G. 2007. Discriminatory classification of natural and anthropogenic waters in two U.K. estuaries. Science of the Total Environment 373: 305-323.

3. Ahad, J.M.E., Ganeshram, R., Spencer, R.G.M., Uher, G., Upstill-Goddard, R.C., Cowie, G.L. 2006. Evaluating the sources and fate of anthropogenic dissolved inorganic nitrogen (DIN) in two contrasting North Sea estuaries. Science of the Total Environment 372: 317-333.

2. Ahad, J.M.E., Ganeshram, R., Spencer, R.G.M., Uher, G., Gulliver, P., Bryant, P.L. 2006. Evidence for anthropogenic 14C-enrichment in estuarine waters adjacent to the North Sea. Geophysical Research Letters 33: L08608, doi:10.1029/2006GL025991.

1. Baker, A., Spencer, R.G.M. 2004. Characterization of dissolved organic matter from source to sea using fluorescence and absorbance spectroscopy. Science of the Total Environment 333: 217-232.

Published Books and Book Chapters:

9. Spencer, R.G.M., Raymond, P.A., 2024. Riverine DOM. In: Biogeochemistry of Marine Dissolved Organic Matter. Hansell, D.A. Carlson, C.A. (Ed.) 3rd Edition. Academic Press, pp. 657-691.

8. Richey, J.E., Spencer, R.G.M., Drake, T., Ward, N.D. 2021. Fluvial carbon dynamics across the land to ocean continuum of great tropical rivers: the Amazon and Congo. In: Congo Basin Hydrology, Climate, and Biogeochemistry: A Foundation for the Future. Wiley AGU.

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