Results 211 to 220 of about 10,707 (256)
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Mercury in San Francisco Bay Forage Fish
Environmental Pollution, 2010In the San Francisco Estuary, management actions including tidal marsh restoration could change fish mercury (Hg) concentrations. From 2005 to 2007, small forage fish were collected and analyzed to identify spatial and interannual variation in biotic methylmercury (MeHg) exposure.
Ben K. Greenfield
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1987
The end of the Paleolithic is a major watershed in human prehistory. Not only did sophisticated art and funeral practices appear for the first time, but major economic and technological changes were underway that would lead to food production and the domestication of plants and animals.
Brian Hayden +2 more
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The end of the Paleolithic is a major watershed in human prehistory. Not only did sophisticated art and funeral practices appear for the first time, but major economic and technological changes were underway that would lead to food production and the domestication of plants and animals.
Brian Hayden +2 more
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2019
The Forage Fish Rollercoaster. Forage fish are the small fishes such as sardines, anchovy, mackerel, and herring that are among the most abundant fish in the sea and form the base of the fish food chain. They are often the dominant food for predatory fish, marine mammals, and marine birds.
Ray Hilborn, Ulrike Hilborn
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The Forage Fish Rollercoaster. Forage fish are the small fishes such as sardines, anchovy, mackerel, and herring that are among the most abundant fish in the sea and form the base of the fish food chain. They are often the dominant food for predatory fish, marine mammals, and marine birds.
Ray Hilborn, Ulrike Hilborn
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Foraging Theory and Piscivorous Fish: Are Forage Fish Just Big Zooplankton?
Transactions of the American Fisheries Society, 1993Abstract Insights into the dynamics of fish growth can be gained by using foraging theory to link bioenergetics models of fish and their prey. These links are critical for modeling fish daily ration and growth, prey mortality, selection among prey, and competition among predators.
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Fishing for Feed or Fishing for Food: Increasing Global Competition for Small Pelagic Forage Fish
AMBIO: A Journal of the Human Environment, 2009At present, small pelagic forage fish species (includes anchovies, herring, mackerel, sardines, etc.) represent the largest landed species group in capture fisheries (27.3 million t or 29.7% of total capture fisheries landings in 2006). They also currently constitute the major species group actively fished and targeted for nonfood uses, including ...
Tacon, Albert G. J., Metian, Marc
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1986
A short while observing a feeding fish might give the impression that it would be impossible to understand why behavioural changes occur as they do. A foraging roach (Rutilus rutilus), for example, cruises about its habitat digging into the bottom, snapping at a drifting insect in midwater and plucking at a piece of leaf at the water’s edge.
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A short while observing a feeding fish might give the impression that it would be impossible to understand why behavioural changes occur as they do. A foraging roach (Rutilus rutilus), for example, cruises about its habitat digging into the bottom, snapping at a drifting insect in midwater and plucking at a piece of leaf at the water’s edge.
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Learning of foraging skills by fish
Fish and Fisheries, 2003Abstract This chapter outlines the relationships between a number of key factors that influence learning and memory, and illustrates them by reference to studies on the foraging behaviour of fish. Learning can lead to significant improvements in foraging performance in only a few exposures, and at least some fish species are capable ...
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The foraging ecology of larval and juvenile fishes
Reviews in Fish Biology and Fisheries, 2011Knowledge of the foraging ecology of fishes is fundamental both to understanding the processes that function at the individual, population and community levels, and for the management and conservation of their populations and habitats. Furthermore, the factors that influence the acquisition and assimilation of food can have significant consequences for
Cowx, I. G., Nunn, A. D., Tewson, L. H.
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The value of Pacific sardine as forage fish
Marine Policy, 2010Abstract This paper develops a simple bioeconomic model to investigate the economic and ecological issues associated with the commercial harvest of Pacific sardines relative to their value as forage for commercially, recreationally, and ecologically important predators in the California Current ecosystem. The model was used to evaluate how changes in
Rögnvaldur Hannesson, Samuel F. Herrick
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