Feeding in a heterogeneous environment: spatial dynamics in summer foraging Barents Sea cod
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چکیده
منابع مشابه
Feeding in a heterogeneous environment: spatial dynamics in summer foraging Barents Sea cod
Cod Gadus morhua are important predators in many ecosystems in the North Atlantic, but their ecological importance has diminished in many areas due to stock size reductions. In contrast, the Barents Sea cod stock is currently the world’s largest and at a high level. The goal of our study was to elucidate spatial aspects of cod−prey interactions in the Barents Sea during recent warm years (2004 ...
متن کاملSpatial structure in length at age of cod in the Barents Sea
*Adaptive Dynamics Network, International Institute for Applied Systems Analysis, A-2361 Laxenburg, Austria, †University of Oslo, Department of Zoology, P. O. Box 1050 Blindern, N-0316 Oslo, Norway, ‡Institute of Marine Research, P. O. Box 1870 Nordnes, N-5187 Bergen, Norway, §University of Helsinki, Department of Ecology and Systematics, FIN-00014 Helsinki, Finland and **Norwegian University o...
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Cod, harp seal and minke whale are the main top predators in the Barents Sea ecosystem. In the last decade, the abundance of cod has increased considerably, and is at a record high level. In spite of this, the growth and condition of cod has remained rather stable, although some decrease is seen in size at age of large, mature cod. During the same period, the abundance of harp seals has decline...
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The Barents Sea system is often depicted as a simple food web in terms of number of dominant feeding links. The most conspicuous feeding link is between the Northeast Arctic cod Gadus morhua, the world's largest cod stock which is presently at a historical high level, and capelin Mallotus villosus. The system also holds diverse seabird and marine mammal communities. Previous diet studies may su...
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Stomach content data were used to study spatial, seasonal and interannual dynamics of feeding of the thorny skate Raja radiata. Data on food composition for other Barents Sea skates ( Northern skate – R. hyperborea, Round skate – R. fyllae, Blue skate – R. batis, Spinytail skateR. spinicauda, Long-nosed skate – R. oxyrhynchus and Sail ray R. lintea) are presented. The diet of thorny skate of di...
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ژورنال
عنوان ژورنال: Marine Ecology Progress Series
سال: 2012
ISSN: 0171-8630,1616-1599
DOI: 10.3354/meps09818