Results 251 to 260 of about 98,652 (303)

Compound‐Specific Stable Isotope Analysis Reveals Population‐Specific Differences in Chinook Salmon Trophic Level and Basal Resource Use in the Northeast Pacific

Fisheries Oceanography, Volume 35, Issue 3, Page 397-412, May 2026.
ABSTRACT Chinook salmon exhibit far‐flung and disparate population‐specific marine migrations that have made it difficult to assess their trophic ecology. In this study, we collected returning and resident subadult Fraser River Chinook salmon in 2018 and 2019 from population groups with different known run‐timings (spring, summer, and fall) and marine ...
Jacob E. Lerner, Brian P. V. Hunt
wiley   +1 more source

Metacaspases contribute to the cellular response to heat stress in a marine diatom

New Phytologist, Volume 250, Issue 4, Page 2357-2367, May 2026.
Summary Climate‐driven marine heatwaves (HW) are extreme, large‐scale events characterized by elevated ocean temperatures lasting from days to months. Despite their importance, little is known about the molecular mechanisms of algal response to marine HW. Recent studies suggest that metacaspases play an important role in thermotolerance.
Mai Sadeh, Daniella Schatz, Shifra Ben‐Dor, Avia Mizrachi, Shiri Graff van Creveld, Amichai Zafrin, Assaf Vardi   +6 more
wiley   +1 more source

Meltwater as a Local Source of Ice Nucleating Particles in the Central Arctic Summer

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Identifying sources of ice nucleating particles (INPs) in the central Arctic is important for understanding controls on the phase of Arctic mixed‐phase clouds (AMPCs). We show meltwater samples collected from the Arctic pack ice in July 2020 contain biological INPs active at relatively warm temperatures (T ≥ −10°C).
C. E. Mavis, M. Vazquez, C. A. Bekemeier, K. R. Barry, E. J. Chamberlain, J. Schmale, T. Jokinen, T. Laurila, M. D. Shupe, C. J. M. Hoppe, A. A. Fong, M. Oggier, A. Ulfsbo, J. P. Balmonte, J. S. Bowman, T. C. J. Hill, P. J. DeMott, S. M. Kreidenweis, J. M. Creamean   +18 more
wiley   +1 more source

Physical and Ecological Forcings Drive the Particle Dynamics and Enhanced Carbon Export Efficiency in the Tropical Marginal Sea

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Marginal seas contribute disproportionately to the ocean carbon cycle but remain poorly constrained due to strong spatial and seasonal variability. Here, we combine newly collected in situ particle imagery with machine learning to reconstruct monthly, depth‐resolved climatologies of particle biovolume and size distribution in the South China ...
Zengchao Xu, Yibin Huang, Feipeng Xu, Yichong Wang, Wenxin Fan, Weinan Li, Jixin Chen, Xin Liu, Bangqin Huang   +8 more
wiley   +1 more source

Bayesian Estimates of Ice Optical Properties for Lake Ice Modeling

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Ice and snow cover on frozen lakes is a natural barrier to solar radiation, reducing the transfer of energy that controls under‐ice thermal dynamics and biological productivity. Direct measurements of under‐ice irradiance remain scarce due to logistical constraints.
G. Donini, C. Agostinelli, G. A. Weyhenmeyer, G. Kirillin, M. Leppäranta, G. E. Zdorovennova, I. A. Aslamov, J. A. Culpepper, H. A. Dugan, I. V. Fedorova, E. Jakobsson, R. L. North, Iu.S. Novikova, N. I. Palshin, N. J. T. Pearce, J. Robinson, K. Shchapov, K. Vikström, M. A. Xenopoulos, X. Yang, R. E. Zdorovennov, S. Piccolroaz   +21 more
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Bacteria as Passive Passengers in the Equatorial Pacific Biological Carbon Pump

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Bacteria are important agents modulating the efficiency of the ocean's biological carbon pump (BCP). The long‐standing view considers bacteria as degraders of sinking particulate organic carbon (POC), yet underappreciates their contribution to carbon export.
Jinqiang Guo, Huamao Yuan, Yao Gao, Eric P. Achterberg, Frédéric A. C. Le Moigne, Rainer Kiko, Yuan Shen   +6 more
wiley   +1 more source

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Downwind gas condensate volatiles affect phytoplankton communities

Marine Pollution Bulletin, 2023
We investigated the effects of volatile organic carbons (VOCs) evaporated from gas condensate on the cyanobacteria Synechococcus sp. WH8103, the diatom Asterionellopsis glacialis, and the dinoflagellate Alexandrium minutum. We used custom algal incubation chambers enabling only the gas condensate-derived VOCs to interact with the cell cultures via an ...
E, Rahav, N, Belkin, X, Velasquez, G, Sisma-Ventura, T, Guy-Haim, A, Paytan, M, Rubin-Blum   +6 more
openaire   +2 more sources

Dynamics of Phytoplankton Communities Under Photoinhibition

Bulletin of Mathematical Biology, 2013
We analyzed a model of phytoplankton competition for light in a well-mixed water column. The model, proposed by Gerla et al. (Oikos 120:519-527, 2011), assumed inhibition of photosynthesis at high irradiance (photoinhibition). We described the global behavior through mathematical analyses, providing a general solution to the multi-species competition ...
Hsu, Sze-Bi, Lin, Chiu-Ju, Hsieh, Chih-Hao, Yoshiyama, Kohei   +3 more
openaire   +2 more sources

Microplastics can alter phytoplankton community composition

Science of The Total Environment, 2022
Microplastic pollution is a growing concern globally due to the risks they may pose to ecological communities. Phytoplankton are key ecological community in aquatic ecosystems providing both energy to food webs and have critical roles in ecosystem functions such as carbon cycling.
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Phytoplankton community dynamics

1993
Introduction Limnologists have long appreciated the potential importance of grazing to phytoplankton community composition (Reynolds, 1984 a ). At certain times during seasonal succession, grazers have clear-cut effects on algal assemblages (Lampert et al ., 1986; Sommer et al ., 1986; Vanni & Temte, 1990).
S. R. Carpenter, J. A. Morrice, J. J. Elser, A. L. ST. Amand, N. A. MacKay   +4 more
openaire   +1 more source