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Showing 1 to 13 of 13 for “"zooplankton community structure"”.
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Structure and function of zooplankton colonization in twelve new experimental ponds
… the structural and functional development of zooplankton communities in 12 new experimental ponds for one year and tested four predictions derived from the Random Placement Hypothesis (Coleman 1981). Physico-chemistry, zooplankton colonization dynamics, zooplankton community structure and …
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Nearshore zooplankton communities of Lake Michigan and implications for invasibility by Asian carp
Recent, dramatic shifts have occurred within zooplankton community structure in Lake Michigan. Such changes could alter the ability of invasive species, such as Asian carp, to establish self-sustaining populations. Without knowledge of spatial characteristics of zooplankton communities, it is …
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Zooplankton in Flowing Waters
The zooplankton community structure within a river is governed by a variety of physical, chemical, and environmental features. The current study assessed the role of flow in characterizing the microcrustacean zooplankton community of the Missouri River. I also designed an artificial flow chamber …
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Differentiating the effects of two non-native fish in the Turnbull National Wildlife Refuge
… in invaded ponds, indicating shifts in the zooplankton community structure and the carbon source of predatory invertebrates. Mean δ[superscript]13C was the highest among coinvaded ponds at 6.35% greater than mean fishless δ[superscript]13C, reflecting a shift towards benthic carbon sources. …
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Understanding and predicting the response of reservoir zooplankton communities and water quality to climate change
Freshwater zooplankton communities are highly sensitive to environmental change and are critical indicators of water quality. Zooplankton are central organisms in freshwater food webs, composed of diverse taxa playing different functional roles in freshwater food webs as food sources for upper …
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Influence of Natural and Anthropogenic Environmental Variability on Larval Fish Diet, Growth, and Condition in the Northcentral Gulf of Mexico
… of the Bonnet Carré Spillway in January 2016. Zooplankton community structure was found to be significantly different among the water masses. Larval Gulf Menhaden diet did not differ significantly among the water masses, but larvae from the Chandeleur Sound region had significantly lower recent …
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Feeding of Naupliar and Adult Carnivorous Cyclopoids (Crustacea : Copepoda)
… copepods, though they are often abundant in the zooplankton.The objective of the current study is to compare feeding of naupliar and adult cyclopoids by testing them on prey types they commonly encounter. Procedure. In-laboratory feeding experiments, using prey difference counts, radiolabeled …
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Factors influencing zooplankton communities in small freshwater lochs
The work contained here examined the zooplankton of small freshwater lochs in Highland Scotland. Investigations focused on zooplankton community composition based upon environmental factors and the viability of these lochs as ‘canaries’ of climate change. Sampling occurred at 30 sites which were …
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Trophic Level Changes and Alewife Predation on Conesus Lake
… effect of biomanipulation on water quality and zooplankton community structure. The expected shift to a larger zooplankton community was not observed. The weighted mean length of zooplankton declined from a value of 0.60 mm in 1972-73 to 0.23 mm in 1985 down to 0.18 mm by 1988. Ninety-eight …
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Spatial and Temporal Influences of Water Quality on Zooplankton in Lake Texoma
… Lake Texoma from August 1996 to September 1997. Zooplankton community structure, abundance and spatial and temporal distributions were compared among five lake zones delineated a priori based on chloride concentration. The zones, in order of decreasing chloride concentration, are the Red River …
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Alkyl Polyglucoside Compound Influences Freshwater Plankton Community Structure in Floating Mesocosms
… primary producers (such as microalgae) and zooplankton. Zooplankton are also affected by APG, and species may demonstrate different sensitivities to APGs direct toxicity. Species not affected by direct toxicity may be affected by trophic interaction such as removal of a food source or …
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Microzooplankton Dynamics in Lower Chesapeake Bay and Its Major Tributaries
… the temporal and spatial variability of microzooplankton density and biomass at 14 stations located within Chesapeake Bay and four rivers. Microzooplankton are defined as those heterotrophic organisms which range from 20 to 200 $\mu$m in size, and in this study were mainly composed of copepod …