Zobrazeno 1 - 10
of 118
pro vyhledávání: '"Karen L Casciotti"'
Autor:
Karen L Casciotti, Carolyn eBuchwald
Publikováno v:
Frontiers in Microbiology, Vol 3 (2012)
The microbial nitrogen (N) cycle involves a variety of redox processes that control the availability and speciation of N in the environment and are involved with the production of nitrous oxide (N2O), a climatically important greenhouse gas. Isotopic
Externí odkaz:
https://doaj.org/article/6f9967c703bb43368b3a7333d01aa0e6
Autor:
Tanya Marshall, Julie Granger, Karen L. Casciotti, Kirstin Dähnke, Kay-Christian Emeis, Dario Marconi, Matthew R. McIlvin, Abigail E. Noble, Mak A. Saito, Daniel M. Sigman, Sarah E. Fawcett
Publikováno v:
Communications Earth & Environment, Vol 3, Iss 1, Pp 1-10 (2022)
Between 28 and 100% of nitrogen fixation in the South Atlantic occurs within the Angola Gyre and is potentially fuelled by supply of bioavailable iron from margin sediments and excess phosphorus, according to an analysis of observational hydrographic
Externí odkaz:
https://doaj.org/article/9c468c29f8b6400bb33f7cd97bccd4d8
Autor:
Annie Bourbonnais, Claudia Frey, Xin Sun, Laura A. Bristow, Amal Jayakumar, Nathaniel E. Ostrom, Karen L. Casciotti, Bess B. Ward
Publikováno v:
Frontiers in Marine Science, Vol 8 (2021)
Nitrous oxide (N2O) is a potent greenhouse gas and an ozone destroying substance. Yet, clear step-by-step protocols to measure N2O transformation rates in freshwater and marine environments are still lacking, challenging inter-comparability efforts.
Externí odkaz:
https://doaj.org/article/87e062dbbaed49cbb27be3e574d7399a
Autor:
Xianhui S. Wan, Hua-Xia Sheng, Minhan Dai, Karen L. Casciotti, Matthew J. Church, Wenbin Zou, Li Liu, Hui Shen, Kuanbo Zhou, Bess B. Ward, Shuh-Ji Kao
Publikováno v:
Nature Geoscience. 16:29-36
The removal of carbon dioxide from the atmosphere by the marine biological pump is a key regulator of Earth’s climate; however, the ocean also serves as a large source of nitrous oxide, a potent greenhouse gas and ozone-depleting substance. Althoug
Autor:
Claudia Frey, Xin Sun, Laura Szemberski, Karen L. Casciotti, Emilio Garcia‐Robledo, Amal Jayakumar, Colette L. Kelly, Moritz F. Lehmann, Bess B. Ward
Publikováno v:
Limnology and Oceanography. 68:424-438
Light is considered a strong controlling factor on nitrification rates in the surface ocean. Previous work has shown that ammonia oxidation and nitrite oxidation may be inhibited by high light levels, yet active nitrification has been measured in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6db972ee03dcb2423e946990a1386a93
https://doi.org/10.5194/bg-2023-64
https://doi.org/10.5194/bg-2023-64
The El Niño-Southern Oscillation (ENSO) is a natural climate phenomenon that alters the biogeochemical and physical dynamics of the Eastern Tropical Pacific Ocean. Its two phases, El Niño and La Niña, are characterized by decreased and increased c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48a4f4972fad17d54c0d9f56082fae82
https://doi.org/10.22541/essoar.167751609.92910201/v1
https://doi.org/10.22541/essoar.167751609.92910201/v1
Autor:
Timur Cinay, Diana Dumit, Ryan J. Woosley, Elisabeth L. Boles, Jarek V. Kwiecinski, Susan Mullen, Tyler J. Tamasi, Martin J. Wolf, Colette L. Kelly, Nicole M. Travis, Karen L. Casciotti, Andrew R. Babbin
The Eastern Tropical North Pacific (ETNP), like the other marine oxygen deficient zones (ODZs), is characterized by an anoxic water column, nitrite accumulation at the anoxic core, and fixed nitrogen loss via nitrite reduction to N₂O and N₂ gases
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d60686bbf01015ee72d49314e51e9549
https://resolver.caltech.edu/CaltechAUTHORS:20230227-88449200.24
https://resolver.caltech.edu/CaltechAUTHORS:20230227-88449200.24