Results 261 to 270 of about 30,363 (308)

Regional Patterns and Regulatory Mechanisms of Aquatic Carbon Transfer in China

Global Biogeochemical Cycles, Volume 40, Issue 6, June 2026.
Abstract Inland waters constitute vital components in the global carbon (C) cycle. Nevertheless, the regional patterns of aquatic carbon transfer across China remain poorly quantified, and their impacts on the terrestrial carbon budget remain unclear.
Yongmei Hou, Si‐Liang Li, Hang Wen, Sen Xu, Yuxin Li, Shuai Chen, Fu‐Jun Yue, Xiaolong Liu, Lishan Ran   +8 more
wiley   +1 more source

East‐West Variability in Nitrogen Sources Sustaining Pelagic Food Webs in the Subtropical North Pacific Ocean Revealed by Stable Isotopic Analyses

Global Biogeochemical Cycles, Volume 40, Issue 6, June 2026.
Abstract Biological N2 fixation sustains pelagic ecosystems in subtropical oligotrophic waters. However, its impact on food webs as a nitrogen source remains poorly understood. Here, we quantified the contribution of diazotroph‐derived nitrogen to grazing food chains in the subtropical North Pacific in summer, where N2 fixation activity varies markedly
Sachiko Horii, Hiroaki Saito, Keitaro Fukushima, Yuji Onishi, Keisuke Koba, Ken Furuya, Kazutaka Takahashi   +6 more
wiley   +1 more source

Response of the Nitrogen Isotopic Composition of Planktic Foraminifer Tissue to Surface Ocean Nutrient Cycling: A Case Study in the Northern South China Sea

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.
Abstract This study presents data on geographically small‐scale patterns of nitrogen (N) isotope signals (δ15N) within the northern South China Sea (SCS) imprinted on planktic foraminifers (PF). PF from net tows on the shelf, continental slope, and in pelagic waters from summer 2019 were analyzed for δ15N.
Aaron L. Bieler, Lena Heins, Sandi M. Smart, Jassin Petersen, Tobias Eßmann, Birgit Gaye, Joanna J. Waniek, Daniel M. Sigman, Gerald H. Haug, Alfredo Martínez‐García, Ralf Schiebel   +10 more
wiley   +1 more source

Biophysical Drivers of Surface Chlorophyll‐a in the Loop Current and Frontal Eddies in the Gulf of Mexico

Journal of Geophysical Research: Oceans, Volume 131, Issue 6, June 2026.
Abstract Loop Current Frontal Eddies (LCFEs) are eddies that generate through instabilities of the Loop Current (LC). LCFEs have long been considered oases for fish communities due to their elevated chlorophyll‐a (Chl‐a) concentrations, typically attributed to their cyclonic nature.
Pamela Lee, Luna Hiron, Ganesh Gopalakrishnan, Bulusu Subrahmanyam   +3 more
wiley   +1 more source

Contrasting Net Community Production in the Oligotrophic Western North Pacific Subtropical Gyre During the Late Summers of 2020 and 2022: The Roles of Multiple Environmental Drivers

Journal of Geophysical Research: Oceans, Volume 131, Issue 6, June 2026.
Abstract Although the North Pacific Subtropical Gyre (NPSG) is among the most oligotrophic regions, its vast expanse means that small productivity shifts can alter the global carbon budget. We quantified net community production (NCP) from high‐resolution O2 ${\mathrm{O}}_{2}$/Ar measurements and gross primary production (GPP) from 18O incubations in ...
Inhee Lee, Doshik Hahm, Young Shin Kwon, Seon‐Eun Lee, Geun‐Ha Park, Young Ho Ko, Junhyeong Seo, Wonsun Park, Tae‐Wook Kim, Sok Kuh Kang   +9 more
wiley   +1 more source

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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

A mechanistic basis for underyielding in phytoplankton communities

Ecology, 2010
Species richness has been shown to increase biomass production of plant communities. Such overyielding occurs when a community performs better than its component monocultures due to the complementarity or dominance effect and is mostly detected in substrate‐bound plant communities (terrestrial plants or submerged macrophytes) where resource use ...
Schmidtke, Andrea, Gaedke, Ursula (Prof. Dr.), Weithoff, Guntram (PD Dr. rer. nat.)   +2 more
openaire   +3 more sources

Phytoplankton community succession shaping bacterioplankton community composition in Lake Taihu, China

Water Research, 2011
PCR-denaturing gradient gel electrophoresis (DGGE) and canonical correspondence analysis (CCA) were used to explore the relationship between succession of phytoplankton community and temporal variation of bacterioplankton community composition (BCC) in ...
Yuan Niu, Zhimei Ma, Min Qi
exaly   +1 more source

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

Photoacclimation of natural phytoplankton communities

Marine Ecology Progress Series, 2016
Phytoplankton regulate internal pigment concentrations in response to light and nutrient availability. Chlorophyll a to phytoplankton carbon ratios (chl:Cphyto) are commonly reported as a function of growth irradiance (Eg) for evaluating the photoacclimation response of phytoplankton.
JR Graff, TK Westberry, AJ Milligan, MB Brown, G Dall’Olmo, KM Reifel, MJ Behrenfeld   +6 more
openaire   +1 more source