Journal ArticleDOI
Predation by the Ctenophore Mnemiopsis leidyi in Narragansett Bay, Rhode Island
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The impact ofMnemiopsis leidyi as a predator was studied quantitatively to determine their feeding rates on mixed natural zooplankton and showed that feeding rate was independent of food concentration, but a function of both temperature and size of ctenophore.Abstract:
The impact ofMnemiopsis leidyi as a predator was studied quantitatively to determine their feeding rates on mixed natural zooplankton. These studies showed that feeding rate was independent of food concentration, but a function of both temperature and size of ctenophore. The feeding rate (liters cleared per mg dry weight per day) ranged from about 0.01 for larger ctenophores at lower temperatures (10–15°C) to about 0.1 for smaller ctenophores at higher temperatures (20–25°C). Combining these results with ctenophore biomass estimates from three years of sampling, numerical estimates were made of zooplankton mortality due to ctenophore predation. The maximum summer cropping byM. leidyi was calculated to be an average of 5–10% per day for the bay as a whole. Although substantial, this predation pressure alone does not account for the observed summer decline of zooplankton.read more
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Book ChapterDOI
Interactions of pelagic cnidarians and ctenophores with fish: a review
TL;DR: The interactions of medusae, siphonophores and ctenophores with fish range from beneficial for the gelatinous species (food, parasite removal), to negative (predation on them), and it becomes increasingly important to understand how they may influence the balance between pelagic coelenterates and fish.
Book ChapterDOI
The ctenophore Mnemiopsis in native and exotic habitats: U.S. estuaries versus the Black Sea basin
TL;DR: It is concluded that the enormous impact of Mnemiopsis on the Black Sea ecosystem occurred because of the shortage of predators and competitors in the late 1980s and early 1990s.
Journal ArticleDOI
The Control of Biological Invasions in the World's Oceans
Nicholas J. Bax,James T. Carlton,A. Mathews-Amos,R. L. Haedrich,Francis G. Howarth,Jennifer E. Purcell,A. Rieser,A. Gray +7 more
TL;DR: A framework for control of alien marine species is presented to provide guidance for control efforts under the existing patchwork of national laws and can help provide a foundation for international cooperation.
Journal ArticleDOI
End-To-End Models for the Analysis of Marine Ecosystems: Challenges, Issues, and Next Steps
Kenneth A. Rose,J. Icarus Allen,Yuri Artioli,Manuel Barange,Jerry Blackford,Francois Carlotti,Roger Allan Cropp,Ute Daewel,Karen P. Edwards,Kevin J. Flynn,Simeon L. Hill,Reinier HilleRisLambers,Geir Huse,Steven Mackinson,Bernard A. Megrey,Andreas Moll,Richard B. Rivkin,Baris Salihoglu,Corinna Schrum,Lynne J. Shannon,Yunne-Jai Shin,S. Lan Smith,Caleb Smith,Cosimo Solidoro,Michael St. John,Meng Zhou +25 more
TL;DR: End-to-end modeling is in its early developmental stages and thus presents an opportunity to establish an open-access, community-based approach supported by a suite of true interdisciplinary efforts.
Journal ArticleDOI
Effects of climate on relative predation by scyphomedusae and ctenophores on copepods in Chesapeake Bay during 1987-2000
TL;DR: Climate clearly affects gelatinous predator abundances, with consequences that cascade throughout the plankton food web, and the balance between medusae and ctenophores in Chesapeake Bay was greatly affected by climatic factors.
References
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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.
Book
A Coastal Marine Ecosystem: Simulation and Analysis
James N. Kremer,Scott W. Nixon +1 more
TL;DR: A model of the evolution of Ecosystem Models for Narragansett Bay and its Applications and Limitations, focusing on the role of Nutrients and Grazing in Phytoplankton Control, and its implications for Sensitivity and Stability.
Journal ArticleDOI
Production of a calanoid copepod,Acartia tonsa, in the Patuxent River estuary
TL;DR: Acartia tonsa Dana was found to be the most abundant copepod during 7 months of the year in a 10-mile segment of the Patuxent River estuary, which was composed mainly of immature stages and the winter population mainly of adults.
Journal ArticleDOI
The Biological Productivity of Waters
TL;DR: The concept of biological production is best approached from the point of view of a product, defined as a group of organisms which have similar food habits, and which are useful to man or are of special interest for some other reason.
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