Results 271 to 280 of about 497,834 (305)

Abundance of Fish, Source of Fat

Zeitschrift für Assyriologie und vorderasiatische Archäologie
Abstract Fish was an important natural resource in Lower Mesopotamia. The ancient inhabitants could easily rely on the nutrients and fats derived from fishes abundant in the diverse aquatic biomes of its rivers, lakes, marshes and the gulf.
Angela Greco, Nadja Pöllath
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Fishing elevates variability in the abundance of exploited species

Nature, 2006
The separation of the effects of environmental variability from the impacts of fishing has been elusive, but is essential for sound fisheries management. We distinguish environmental effects from fishing effects by comparing the temporal variability of exploited versus unexploited fish stocks living in the same environments.
Hsieh, C. H., Reiss, S. C., Hunter, J. R., Beddington, J. R., May, R. M., Sugihara, G.   +5 more
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Abundance/host size relationship in a fish trematode community

Journal of Helminthology, 1992
ABSTRACTThe abundance of six species of trematodes: Aphanurus stossichi, Bacciger israelensis, Diphterostomum israelense, Plagioporus idoneus, Lepocreadium album and L. pegorchis, parasitic in the digestive tract of marine teleostei (Sparidae) collected near Jounieh (east Mediterranean), was analysed as a function of the host-size. In two parasite/host
A, Saad-Fares, C, Combes
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Variation in hydroacoustic abundance of pelagic fish

Fisheries Research, 1993
Abstract The variation in hydroacoustic abundance of pelagic fish was studied in Baltic coastal areas. Comparisons between zigzag transects and straight transects in the middle of a study area showed no consistent differences and neighbouring areas had generally similar abundances.
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Positive relationships between genetic diversity and abundance in fishes

Molecular Ecology, 2010
AbstractMolecular markers, such as mitochondrial DNA and microsatellite loci, are widely studied to assess population genetics and phylogeography; however, the selective neutrality of these markers is increasingly being questioned. Given the importance of molecular markers in fisheries science and conservation, we evaluated the neutrality of both mtDNA
Megan R, McCusker, Paul, Bentzen
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Fishing drives declines in fish parasite diversity and has variable effects on parasite abundance

Ecology, 2014
Despite the ubiquity and ecological importance of parasites, relatively few studies have assessed their response to anthropogenic environmental change. Heuristic models have predicted both increases and decreases in parasite abundance in response to human disturbance, with empirical support for both. However, most studies focus on one or a few selected
Chelsea L, Wood, Stuart A, Sandin, Brian, Zgliczynski, Ana Sofía, Guerra, Fiorenza, Micheli   +4 more
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Population dynamics of marine fishes at low abundance

Canadian Journal of Fisheries and Aquatic Sciences, 2012
The recovery of depleted species depends on their population dynamics at low abundance. Classical population growth models, applied widely in fisheries science, assume that per capita offspring production increases as abundance declines (compensation). However, slow or absent recovery by many depleted fishes might reflect unexpectedly weak compensation
David M. Keith, Jeffrey A. Hutchings
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Dominance in Fishes: The Relation Between Environment and Abundance

Science, 1982
Changes in abundance of dominant species of fish were positively correlated with environmental factors that improved survival, and abundance of the subordinate species was negatively correlated with the same factors. When dominance changed, the responses of both the dominant and subordinate species also changed. Implicit in this inverse relation is the
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Modelling local abundance distributions of freshwater fish

2009
On étudie la distribution statistique de données d'abondance pour des poissons d'eau douce dans le bassin du Rhône. On s'appuie sur un jeu de données très grand d'échantillons ponctuels d'abondance collectés par pêche électrique, qui comprend 12 espèces sur 7 tronçons et plus de 20 ans, soit au total 2258 échantillons.
Vaudor, L., Lamouroux, Nicolas, Olivier, J.M.   +2 more
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An "Abundance of Fish"

Science, 1972
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