Zobrazeno 1 - 10
of 423
pro vyhledávání: '"B A Ward"'
Publikováno v:
Biogeosciences, Vol 21, Pp 3215-3238 (2024)
Nitrous oxide (N2O) is a potent greenhouse gas and ozone depletion agent, with a significant natural source from marine oxygen-deficient zones (ODZs). Open questions remain, however, about the microbial processes responsible for this N2O production,
Externí odkaz:
https://doaj.org/article/7a52158e3f6e43a1b068d3f6886163d1
Publikováno v:
Biogeosciences, Vol 21, Pp 3239-3250 (2024)
Nitrous oxide (N2O), a potent greenhouse gas and ozone-destroying agent, is produced during nitrogen transformations in both natural and human-constructed environments. Wastewater treatment plants (WWTPs) produce and emit N2O into the atmosphere duri
Externí odkaz:
https://doaj.org/article/8fdc806214bc4563981b2916acfdb126
Autor:
A. A. Naidoo-Bagwell, F. M. Monteiro, K. R. Hendry, S. Burgan, J. D. Wilson, B. A. Ward, A. Ridgwell, D. J. Conley
Publikováno v:
Geoscientific Model Development, Vol 17, Pp 1729-1748 (2024)
We extend the ecological component (ECOGEM) of the carbon-centric Grid-Enabled Integrated Earth system model (cGEnIE) to include a diatom functional group. ECOGEM represents plankton community dynamics via a spectrum of ecophysiological traits origin
Externí odkaz:
https://doaj.org/article/ab4f2b09261c4682b9ccdcfe942fb1db
Autor:
W. Tang, B. B. Ward, M. Beman, L. Bristow, D. Clark, S. Fawcett, C. Frey, F. Fripiat, G. J. Herndl, M. Mdutyana, F. Paulot, X. Peng, A. E. Santoro, T. Shiozaki, E. Sintes, C. Stock, X. Sun, X. S. Wan, M. N. Xu, Y. Zhang
Publikováno v:
Earth System Science Data, Vol 15, Pp 5039-5077 (2023)
As a key biogeochemical pathway in the marine nitrogen cycle, nitrification (ammonia oxidation and nitrite oxidation) converts the most reduced form of nitrogen – ammonium–ammonia (NH4+–NH3) – into the oxidized species nitrite (NO2-) and nitr
Externí odkaz:
https://doaj.org/article/6baf8a77ab074f20a0d42e1ef93eba46
Autor:
J. C. Tracey, A. R. Babbin, E. Wallace, X. Sun, K. L. DuRussel, C. Frey, D. E. Martocello III, T. Tamasi, S. Oleynik, B. B. Ward
Publikováno v:
Biogeosciences, Vol 20, Pp 2499-2523 (2023)
Oxygen minimum zones (OMZs), due to their large volumes of perennially deoxygenated waters, are critical regions for understanding how the interplay between anaerobic and aerobic nitrogen (N) cycling microbial pathways affects the marine N budget. He
Externí odkaz:
https://doaj.org/article/124d729e364d4abf963f410a4c2390df
Publikováno v:
Biogeosciences, Vol 19, Pp 3425-3444 (2022)
Across the Southern Ocean in winter, nitrification is the dominant mixed-layer nitrogen cycle process, with some of the nitrate produced therefrom persisting to fuel productivity during the subsequent growing season. Because this nitrate constitutes
Externí odkaz:
https://doaj.org/article/5cba833591344ed29bfcf1914e9f1a14
Autor:
B. C. Kolody, S. R. Smith, L. Zeigler Allen, J. P. McCrow, A. Moustafa, D. Shi, B. M. Hopkinson, F. M. M. Morel, B. B. Ward, A. E. Allen
Publikováno v:
mSystems, Vol 7, Iss 5 (2022)
ABSTRACT Nearly half of carbon fixation and primary production originates from marine phytoplankton, and much of it occurs in episodic blooms in upwelling regimes. Here, we simulated blooms limited by nitrogen and iron by incubating Monterey Bay surf
Externí odkaz:
https://doaj.org/article/967e57d24fad4126b0bd981ad30bb1be
Autor:
K. G. Schulz, E. P. Achterberg, J. Arístegui, L. T. Bach, I. Baños, T. Boxhammer, D. Erler, M. Igarza, V. Kalter, A. Ludwig, C. Löscher, J. Meyer, F. Minutolo, E. von der Esch, B. B. Ward, U. Riebesell
Publikováno v:
Biogeosciences, Vol 18, Pp 4305-4320 (2021)
Upwelling of nutrient-rich deep waters make eastern boundary upwelling systems (EBUSs), such as the Humboldt Current system, hot spots of marine productivity. Associated settling of organic matter to depth and consecutive aerobic decomposition result
Externí odkaz:
https://doaj.org/article/477cc321eda6497ebbcc7ac48638e98c
Autor:
A. Jayakumar, B. B. Ward
Publikováno v:
Biogeosciences, Vol 17, Pp 5953-5966 (2020)
Diversity and community composition of nitrogen (N) fixing microbes in the three main oxygen minimum zones (OMZs) of the world ocean were investigated using operational taxonomic unit (OTU) analysis of nifH clone libraries. Representatives of three o
Externí odkaz:
https://doaj.org/article/0b426479a3954572a3db2a0235104ce2
Autor:
S. T. Wilson, A. N. Al-Haj, A. Bourbonnais, C. Frey, R. W. Fulweiler, J. D. Kessler, H. K. Marchant, J. Milucka, N. E. Ray, P. Suntharalingham, B. F. Thornton, R. C. Upstill-Goddard, T. S. Weber, D. L. Arévalo-Martínez, H. W. Bange, H. M. Benway, D. Bianchi, A. V. Borges, B. X. Chang, P. M. Crill, D. A. del Valle, L. Farías, S. B. Joye, A. Kock, J. Labidi, C. C. Manning, J. W. Pohlman, G. Rehder, K. J. Sparrow, P. D. Tortell, T. Treude, D. L. Valentine, B. B. Ward, S. Yang, L. N. Yurganov
Publikováno v:
Biogeosciences, Vol 17, Pp 5809-5828 (2020)
In the current era of rapid climate change, accurate characterization of climate-relevant gas dynamics – namely production, consumption, and net emissions – is required for all biomes, especially those ecosystems most susceptible to the impact of
Externí odkaz:
https://doaj.org/article/3b7984b0fdc645df9d1570e6545f34dd