Concentration and compositional controls on degradation of permafrost‐derived dissolved organic matter on the Qinghai–Tibetan Plateau

Autor: Yinghui Wang, Yasong Wang, Lulu Han, Amy M. McKenna, Anne M. Kellerman, Robert G. M. Spencer, Yuanhe Yang, Yunping Xu

Publikováno v: Limnology and Oceanography Letters, Vol 9, Iss 5, Pp 563-572 (2024)

Abstract Understanding the fate of permafrost‐derived dissolved organic matter (DOM) is critical for unraveling its role in carbon cycling. However, it remains unclear whether the high lability of permafrost‐derived DOM can be attributed to intri

Externí odkaz: https://doaj.org/article/5099f9ca57334190b51d73dfe4b8e358

Arctic biogeochemical and optical properties of dissolved organic matter across river to sea gradients

Autor: Michael G. Novak, Antonio Mannino, J. Blake Clark, Peter Hernes, Maria Tzortziou, Robert G. M. Spencer, Anne M. Kellerman, Brice Grunert

Publikováno v: Frontiers in Marine Science, Vol 9 (2022)

Arctic landscapes are warming and becoming wetter due to changes in precipitation and the timing of snowmelt which consequently alters seasonal runoff and river discharge patterns. These changes in hydrology lead to increased mobilization and transpo

Externí odkaz: https://doaj.org/article/6bb4073fd93f4606b31f01ccc35afa4c

The Effects of Glacial Cover on Riverine Silicon Isotope Compositions in Chilean Patagonia

Autor: Helena V. Pryer, Jade E. Hatton, Jemma L. Wadham, Jon R. Hawkings, Laura F. Robinson, Anne M. Kellerman, Matthew G. Marshall, Alejandra Urra, Anna Covey, Giovanni Daneri, Vreni Häussermann, Katharine R. Hendry

Publikováno v: Frontiers in Earth Science, Vol 8 (2020)

Proglacial rivers have been shown to have distinctive silicon (Si) isotope compositions, providing new insights into the mechanisms controlling Si cycling in the subglacial environment and suggesting terrestrial Si isotope exports may have varied bet

Externí odkaz: https://doaj.org/article/e1e3508b73274f8badf4bbee36ce1f35

Spatiotemporal response of dissolved organic matter diversity to natural and anthropogenic forces along the whole mainstream of the Yangtze River

Autor: Shuaidong Li, Lize Meng, Chu Zhao, Yu Gu, Robert G.M. Spencer, Xosé Antón Álvarez–Salgado, Anne M. Kellerman, Amy M. McKenna, Tao Huang, Hao Yang, Changchun Huang

12 pages, 9 figures
The Yangtze River, the largest river in Asia, plays a crucial role in linking continental and oceanic ecosystems. However, the impact of natural and anthropogenic disturbances on composition and transformation of dissolved or

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a0a62f01b19db439aa507f9b8188ac8
http://hdl.handle.net/10261/303195

Molecular Signatures of Glacial Dissolved Organic Matter From Svalbard and Greenland

Autor: David C. Podgorski, Anne M. Kellerman, Sarah Ellen Johnston, Munir Humayun, Jorien E. Vonk, Robert G. M. Spencer, Elise van Winden, Stephanie McColaugh, Jon R. Hawkings

Publikováno v: Global Biogeochemical Cycles
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, vol. 35, no. 3, e2020GB006709, pp. 1-20 . https://doi.org/10.1029/2020GB006709
Global Biogeochemical Cycles, 35(3):e2020GB006709, 1-20. American Geophysical Union

Glaciers and ice sheets cover over 10 % of Earth's land surface area and store a globally significant amount of dissolved organic matter (DOM), which is highly bioavailable when exported to proglacial environments. Recent rapid glacier mass loss is h

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4565669fa4f9ca4ad21f9384a6aaac4a
https://doi.org/10.1029/2020gb006709