Journal ArticleDOI
Grazing by 35 to 202 μm micro-zooplankton in Long Island Sound
G. M. Capriulo,E. J. Carpenter +1 more
TLDR
The micro-zooplankton were found to sometimes remove a significant portion of the chlorophyll a standing stock, with an upper limit of 41% of the standing stock being ingested per day.Abstract:
Micro-zooplankton abundance in Long Island Sound varied from 103 to 104 animals l-1 at the station studied and consisted almost entirely of tintinnids. The micro-zooplankton were found to sometimes remove a significant portion of the chlorophyll a standing stock, with an upper limit of 41% of the standing stock being ingested per day. Observed ingestion rates ranged from 0.001 to 0.17 ng chlorophyll a removed animal-1 h-1 and from 0.06 to 87 cells removed animal-1 h-1, depending on season and type of cell being ingested. Filtering rates varied from 1.03 to 84.7 μl animal-1 h-1. As a community, the micro-zooplankton exhibited the same order of magnitude ingestion and filtering rates as those noted for copepods.read more
Citations
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Journal ArticleDOI
Estimating the grazing impact of marine micro-zooplankton
Michael R. Landry,R. P. Hassett +1 more
TL;DR: A dilution technique for estimating the micro-zooplankton grazing impact on natural communities of marine phytoplankton and indirect evidence suggests that most of this impact is due to the feeding of copepod nauplii and tintinnids.
Journal ArticleDOI
Zooplankton grazing and growth: Scaling within the 2-2,-μm body size range
TL;DR: The size dependency of grazing and growth rates in zooplankton, data collected from laboratory studies in the literature, covering both limnic and marinc organisms, found significant differences between groups, but the entire set of observations could not be fitted by an overall regression.
Journal ArticleDOI
Regulation of zooplankton biomass and production in a temperate, coastal ecosystem. 2. Ciliates
TL;DR: In this article, seasonal distributions of copepod biomass, egg production, and production rates were compared to the variation in abundance and size and taxonomic composition of microplankton in the southern Kattegat, Denmark.
Journal ArticleDOI
Marine plankton food chains
TL;DR: The view on the ecology of marine plankton has changed significantly within the last decade, with the recognition that phototrophic and heterotrophic microorganisms play a substantial and sometimes dominating role in the cycling of matter in the sea, that plankton food chains include a higher number of trophic levels than hitherto believed.
References
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Biometery: The principles and practice of statistics in biological research
TL;DR: In this paper, the authors present a model for the analysis of variance in a single-classification and two-way and multiway analysis of Variance with the assumption of correlation.
Book
Biometry: The Principles and Practice of Statistics in Biological Research
Robert R. Sokal,F. James Rohlf +1 more
TL;DR: In this paper, the authors present a model for the analysis of variance in a single-classification and two-way and multiway analysis of Variance with the assumption of correlation.
Journal ArticleDOI
Effects of size and concentration of food particles on the feeding behavior of the marine planktonic copepod calanus pacificus1
TL;DR: Female of C. pacificus can obtain their maximal daily ration at relatively low carbon concentrations of large cells, as the size of food particles increases, and the carbon concentration at which this ingestion rate is achieved decreases.
Effects of size and concentration of food particles on the feeding behavior of the marine planktonic copepod calanus pacificus
TL;DR: Females of C. pacificus can obtain their maximal daily ration at relatively low carbon concentrations of large cells, as the size of food particles increases, the carbon concentration at which this ingestion rate is achieved decreases.
Journal ArticleDOI
Effects of Temperature on Growth of Zooplankton, and the Adaptive Value of Vertical Migration
TL;DR: It is shown that Bělehradek's temperature function gives a close fit to size and development rate of several species of zooplankters growing in adequate food supply, although conclusions do not depend on the theoretical content of this equation.