Results 301 to 310 of about 103,581 (321)
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Trophic Cascades and Phytoplankton Community Structure
Ecology, 1990Two predators of zooplankton, fish (yellow perch) and larval insects (Chaoborus), were manipulated within in situ mesocosms to assess their indirect effects on phytoplankton. The two predators caused similar reductions in zooplankton size and biomass, and as a consequence, zooplankton grazing rates on phytoplankton.
Michael J. Vanni, David L. Findlay
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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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Herbivoran impact on phytoplankton community structure
Hydrobiologia, 1991An enclosure experiment was conducted to assess the effects of a zooplankton elimination on the structure of a phytoplankton community. Phytoplankton biomass and production were higher in grazer-free enclosures, while the productivity per unit biovolume was lower.
Jan-Erik Svensson, Jan A. E. Stenson
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Trait-Based Community Ecology of Phytoplankton
Annual Review of Ecology, Evolution, and Systematics, 2008Trait-based approaches are increasingly used in ecology. Phytoplankton communities, with a rich history as model systems in community ecology, are ideally suited for applying and further developing these concepts. Here we summarize the essential components of trait-based approaches and review their historical and potential application to illuminating ...
Elena Litchman +1 more
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Phytoplankton communities in channel catfish ponds
Hydrobiologia, 1984Seasonal changes in the quantity and quality of phytoplankton were studied in six channel catfish culture ponds. Chlorophyll a concentrations were generally highest in the summer (averaging >200 μg 1−1) but the highest individual chlorophyll a value recorded (910 μg 1−1) occurred in the winter during a bloom of Dictyosphaerium pulchellum.
C. S. Tucker, S. W. Lloyd
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Community assembly: perspectives from phytoplankton’s studies
Hydrobiologia, 2020Community assembly (CA) is a topic of growing interest in ecology due to global change, among other reasons. A review of the latter 20 years in plankton CA studies suggests some advancements and drawbacks. Most works deal with groups of same trophic level species and overlook food webs, except the proposal of the PEG model.
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Phytoplankton Communities in Temperate Rivers
2012The structure of phytoplankton communities was examined seasonally across five rivers with a focus on small cells and their relative importance. Picophytoplankton (0.2-2 μm), previously considered insignificant in rivers, reached densities as high as those observed in lakes and oceans (~ 10e4-10e5 cells/mL). Their relative importance was not a function
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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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Thermal diversity within marine phytoplankton communities
2020Marine photosynthetic carbon fixation in the sunlit upper reaches of the ocean is almost entirely carried out by chlorophyll-containing, single-celled microorganisms, and is responsible for half of the net primary production on the planet. Because of this connection to the marine carbon cycle, it is essential to assess the responses of marine ...
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