Results 211 to 220 of about 15,354 (255)
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A mechanistic basis for underyielding in phytoplankton communities
Ecology, 2010Species 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 +2 more
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Tolerance of polar phytoplankton communities to metals
Environmental Pollution, 2014Large amounts of pollutants reach polar regions, particularly the Arctic, impacting their communities. In this study we analyzed the toxic levels of Hg, Cd and Pb to natural phytoplankton communities of the Arctic and Southern Oceans, and compared their sensitivities with those observed on phytoplankton natural communities from temperate areas. Mercury
P. Echeveste +2 more
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Phytoplankton community dynamics
1993Introduction 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 +4 more
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The phytoplankton community of a eutrophic reservoir
Hydrobiologia, 1988The dynamics of the phytoplankton community of a eutrophic reservoir are described for a two year period. Fifty-eight species were recorded, 25 of them common. Bacillariophyta dominated during the winter and early spring and Chlorophyta during late spring, to be replaced by a bloom of Cyanophyta.
M. M. Abdul-Hussein, C. F. Mason
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Photoacclimation of natural phytoplankton communities
Marine Ecology Progress Series, 2016Phytoplankton 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 +6 more
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1979
The phytoplankton community of Lake Lanao is composed of 70 euplanktonic species, including Cyanophyta (12), Euglenophyta (4), Chlorophyta (44), Chrysophyceae (1), Bacillariophyceae (4), Dinophyceae (3), and Cryptophyceae (2) (Fig. 3-1). Composition similar to this appears to be very widespread in tropical lakes that are not highly saline or extremely ...
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The phytoplankton community of Lake Lanao is composed of 70 euplanktonic species, including Cyanophyta (12), Euglenophyta (4), Chlorophyta (44), Chrysophyceae (1), Bacillariophyceae (4), Dinophyceae (3), and Cryptophyceae (2) (Fig. 3-1). Composition similar to this appears to be very widespread in tropical lakes that are not highly saline or extremely ...
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Microplastics can alter phytoplankton community composition
Science of The Total Environment, 2022Microplastic 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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UVB Effects on the Photosystem II‐D1 Protein of Phytoplankton and Natural Phytoplankton Communities
Photochemistry and Photobiology, 2006ABSTRACTThe reaction center of photosystem II is susceptible to photodamage. In particular the D1 protein located in the photosystem II core has a rapid, light‐dependent turnover termed the photosystem II repair cycle that, under illumination, degrades and resynthesizes D1 protein to limit accumulation of photodamaged photosystem II.
Josée Nina, Bouchard +2 more
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Photoinhibition and the assembly of light‐limited phytoplankton communities
Oikos, 2010Photoinhibition is characterised by a decreasing rate of photosynthesis with increasing light. It occurs in many photosynthetic organisms and is especially apparent in phytoplankton species sensitive to high light. Yet, the population and community level consequences of photoinhibition are not well understood.
Gerla, D.J., Mooij, W.M., Huisman, J.
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Seasonal dynamics of phytoplankton community in a tropical wetland
Environmental Monitoring and Assessment, 2014Phytoplankton species composition and seasonal changes were investigated in the Bhoj wetland Bhopal. Taxonomic composition, diversity, and abundance of phytoplankton were studied at nine stations from March 2008 to February 2010, in relation to various physico-chemical factors. Total phytoplankton species composition in the Bhoj wetland was represented
Najeeb Ahmad, Bhat +2 more
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