منابع مشابه
Passive Acoustics as a Tool in Fisheries Science
—Many fishery biologists that are interested in documenting fish habitat and following the movements and behavior of fishes use acoustic tags. Because over 700 fish species naturally produce lowfrequency, species-specific sounds, these can be used as natural acoustic tags. Passive acoustic approaches (monitoring sound-producing fishes with hydrophones) show great promise for gathering data in a...
متن کاملModelling food web interactions, variation in plankton production, and fisheries in the western English Channel ecosystem
To explore the contributions that fishing, trophic interactions and plankton production make to explanations of the observed variation of higher trophic (principally fish) levels in the western English Channel ecosystem, Ecosim simulations were run from 1973 to 1999 using the most complete data set yet assembled. The results indicate that a bottom-up mechanism plays an important role in the sys...
متن کاملObject recognition using proportion-based prior information: Application to fisheries acoustics
This paper addresses the inference of probabilistic classification models using weakly supervised learning. The main contribution of this work is the development of learning methods for training datasets consisting of groups of objects with known relative class priors. This can be regarded as a generalization of the situation addressed by Bishop and Ulusoy (2005), where training information is ...
متن کاملIntegrating ecophysiology and plankton dynamics into projected changes in maximum fisheries catch potential under climate change in the Northeast Atlantic
School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, UK Centre for Environment, Fisheries and Aquaculture Science, Pakefield Road, Lowestoft, Suffolk NR33 0HT, UK Geophysical Fluid Dynamic Laboratory, National Oceanic and Atmospheric Administration, 201 Forrestal Road, Princeton, NJ 08540-6649, USA Atmospheric and Oceanic Sciences Programme, Princeton University, 300 Fo...
متن کاملPlankton sinking and turbulence
To overcome sinking, plankton have devised various types of strategies. One is swimming, that is, an active, energy-consuming self-propulsion than can oppose gravitational sinking. Other phytoplankters can modify their buoyancy, becoming, at least for some time, positively buoyant. Others can exploit the turbulence in the mixed layer, using it to stay suspended for longer times. This latter opt...
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ژورنال
عنوان ژورنال: ICES Journal of Marine Science
سال: 1996
ISSN: 1054-3139
DOI: 10.1006/jmsc.1996.0012