Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Laura Mariana Wehrmann"'
Autor:
David Jaramillo-Vogel, Eline Feenstra, David Van Rooij, Anneleen Foubert, Katrin Heindel, Norbert Frank, Daniel Birgel, Bernard Grobéty, Leanne G. Hancock, Joern Peckmann, Laura Mariana Wehrmann
Publikováno v:
Geobiology. 18:185-206
Cold-water coral (CWC) mounds are build-ups comprised of coral-dominated intervals alternating with a mixed carbonate-siliciclastic matrix. At some locations, CWC mounds are influenced by methane seepage, but the impact of methane on CWC mounds is po
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cbc23a67bda66c1334ce3c6804896f27
https://doi.org/10.1111/gbi.12373
https://doi.org/10.1111/gbi.12373
Publikováno v:
Jorgensen, B B, Laufer, K, Michaud, A B & Wehrmann, L M 2021, ' Biogeochemistry and microbiology of high Arctic marine sediment ecosystems-Case study of Svalbard fjords ', Limnology and Oceanography, vol. 66, no. S1, pp. S273-S292 . https://doi.org/10.1002/lno.11551
Fjord ecosystems of the high Arctic are distinct from fjords of temperate latitudes due to the influence of glaciers, icebergs, sea ice, and the permanently low temperatures. The sediment microbiology and biogeochemical processes were analyzed during
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::344ec14818b6b2ab4ddb7e05c37466b4
https://doi.org/10.1002/lno.11551
https://doi.org/10.1002/lno.11551
Autor:
Laura Mariana Wehrmann, Gilad Antler, Katja Laufer, André Pellerin, Alexandra V. Turchyn, Alyssa Findlay, Alexander B. Michaud, Bo Barker Jørgensen, Hans Røy
Publikováno v:
Michaud, A B, Laufer, K, Findlay, A, Pellerin, A, Antler, G, Turchyn, A V, Røy, H, Wehrmann, L M & Jørgensen, B B 2020, ' Glacial influence on the iron and sulfur cycles in Arctic fjord sediments (Svalbard) ', Geochimica et Cosmochimica Acta, vol. 280, pp. 423-440 . https://doi.org/10.1016/j.gca.2019.12.033
Arctic fjord sediments of Svalbard receive terrestrial material from glacial runoff and organic matter from marine primary productivity. Organic carbon mineralization proceeds primarily through sulfate and iron reduction in the fjord sediment. The on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::514be282651e6615a214a498a6993018
https://doi.org/10.1016/j.gca.2019.12.033
https://doi.org/10.1016/j.gca.2019.12.033
Biogeochemical Sequestration of Phosphorus in a Two-Layer Lignocellulose-Based Soil Treatment System
Autor:
Harold W. Walker, Laura Mariana Wehrmann, Roy E. Price, Jeanette A. Lee, George Heufelder, Christopher J. Gobler
Publikováno v:
Journal of Sustainable Water in the Built Environment. 6
On-site wastewater treatment systems can contribute to the oversupply of phosphorus (P) to aquatic systems which represents a key factor for the development of eutrophic conditions and asso...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec82b09586981ca9ac2c707f5a7044a0
https://doi.org/10.1061/jswbay.0000906
https://doi.org/10.1061/jswbay.0000906
Autor:
Bo Barker Jørgensen, Katja Laufer, Natascha Riedinger, Alexander B. Michaud, Robert C. Aller, Qingzhi Zhu, Laura Mariana Wehrmann, Lisa C. Herbert
Publikováno v:
Geological Society of America Abstracts with Programs.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d0801e074dcf05564dfbf14f78b358f
https://doi.org/10.1130/abs/2020am-360171
https://doi.org/10.1130/abs/2020am-360171
Autor:
Laura Mariana Wehrmann, Katja Laufer, J. Kirk Cochran, Hans Røy, Robert C. Aller, Natascha Riedinger, Bo Barker Jørgensen, Christina Heilbrun, Alexander B. Michaud, Lisa C. Herbert
Publikováno v:
Herbert, L C, Riedinger, N, Michaud, A B, Laufer, K, Røy, H, Jørgensen, B B, Heilbrun, C, Aller, R C, Cochran, J K & Wehrmann, L M 2020, ' Glacial controls on redox-sensitive trace element cycling in Arctic fjord sediments (Spitsbergen, Svalbard) ', Geochimica et Cosmochimica Acta, vol. 271, pp. 33-60 . https://doi.org/10.1016/j.gca.2019.12.005
Glacial meltwater is an important source of bioessential trace elements to high latitude oceans. Upon delivery to coastal waters, glacially sourced particulate trace elements are processed during early diagenesis in sediments and may be sequestered o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66d1d633c30e7938f6e23494502bddf2
https://pure.au.dk/portal/da/publications/glacial-controls-on-redoxsensitive-trace-element-cycling-in-arctic-fjord-sediments-spitsbergen-svalbard(8a0bb274-4f9e-4c2d-bde5-ade0d516b309).html
https://pure.au.dk/portal/da/publications/glacial-controls-on-redoxsensitive-trace-element-cycling-in-arctic-fjord-sediments-spitsbergen-svalbard(8a0bb274-4f9e-4c2d-bde5-ade0d516b309).html
Autor:
Clara Jule Marie Hoppe, Katja Laufer-Meiser, Bo Barker Jørgensen, Alexander B. Michaud, Robert C. Aller, Lisa C. Herbert, Laura Mariana Wehrmann, Qingzhi Zhu
Publikováno v:
Herbert, L C, Michaud, A B, Laufer-Meiser, K, Hoppe, C J M, Zhu, Q, Aller, R C, Jørgensen, B B & Wehrmann, L M 2022, ' Tight benthic-pelagic coupling drives seasonal and interannual changes in iron‑sulfur cycling in Arctic fjord sediments (Kongsfjorden, Svalbard) ', Journal of Marine Systems, vol. 225, 103645 . https://doi.org/10.1016/j.jmarsys.2021.103645
Highlights • Investigation of seasonal Fe-S-C cycling in Arctic fjord sediments and water column. • Results show benthic respiration and increased benthic Fe2+ flux over winter. • Findings suggest that fjord sediments respond rapidly to water c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cfa5fbebc6570127619ac85ec60f1446
https://doi.org/10.1016/j.jmarsys.2021.103645
https://doi.org/10.1016/j.jmarsys.2021.103645
Autor:
Roy E. Price, Bjarni Gautason, Erlendur Bogason, Eric S. Boyd, Tori M. Hoehler, Hreiðar Þór Valtýsson, Laura Mariana Wehrmann, Johann Orlygsson, Jan P. Amend
Publikováno v:
Geology. 45:1135-1138
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f059828ffacea91273f3e3175a3a411
https://doi.org/10.1130/g39474.1
https://doi.org/10.1130/g39474.1
Autor:
Volker Brüchert, Casey R. J. Hubert, Timothy G. Ferdelman, Benjamin Brunner, Natascha Riedinger, Laura Mariana Wehrmann, Michael J. Formolo, Bo Barker Jørgensen, Lisa C. Herbert, Alexey Kamyshny
Publikováno v:
Wehrmann, L M, Riedinger, N, Brunner, B, Kamyshny, A, Hubert, C R J, Herbert, L C, Bruechert, V, Jorgensen, B B, Ferdelman, T G & Formolo, M J 2017, ' Iron-controlled oxidative sulfur cycling recorded in the distribution and isotopic composition of sulfur species in glacially influenced fjord sediments of west Svalbard ', Chemical Geology, vol. 466, pp. 678-695 . https://doi.org/10.1016/j.chemgeo.2017.06.013
This study investigates how glacially delivered reactive iron (oxyhydr) oxide and manganese oxide phases influence the biogeochemical cycling of sulfur in sediments of three Arctic fjords and how the biogeochemical signatures of these processes are p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5365c79436257594f3f33e3b3c5ac126
https://doi.org/10.1016/j.chemgeo.2017.06.013
https://doi.org/10.1016/j.chemgeo.2017.06.013
Autor:
Hans Røy, Bo Barker Jørgensen, Anna Szynkiewicz, Joy Buongiorno, Kimberly J. Schindler, Laura Mariana Wehrmann, Kevin M. Yeager, Katja Laufer, Anthony M. Faiia, Alexander B. Michaud, Karen G. Lloyd, Lisa C. Herbert
Publikováno v:
Buongiorno, J, Herbert, L C, Wehrmann, L M, Michaud, A B, Laufer, K, Røy, H, Jørgensen, B B, Szynkiewicz, A, Faiia, A, Yeager, K M, Schindler, K & Lloyd, K G 2019, ' Complex Microbial Communities Drive Iron and Sulfur Cycling in Arctic Fjord Sediments ', Applied and Environmental Microbiology, vol. 85, no. 14, 00949-19 . https://doi.org/10.1128/AEM.00949-19
Glacial retreat is changing biogeochemical cycling in the Arctic, where glacial runoff contributes iron for oceanic shelf primary production. We hypothesize that in Svalbard fjords, microbes catalyze intense iron and sulfur cycling in low-organic-mat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::84dfbaaf3937577d794c79845e71ab61
https://pure.au.dk/portal/da/publications/complex-microbial-communities-drive-iron-and-sulfur-cycling-in-arctic-fjord-sediments(f05506f0-7c58-477c-9bb2-b14d687274f7).html
https://pure.au.dk/portal/da/publications/complex-microbial-communities-drive-iron-and-sulfur-cycling-in-arctic-fjord-sediments(f05506f0-7c58-477c-9bb2-b14d687274f7).html