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Non-additive and non-stationary properties in the spatial distribution of a large marine fish population
- Ciannelli, L. (author)
-
- Bartolino, Valerio, 1979 (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences,Institutionen för akvatiska resurser,Department of Aquatic Resources
- Chan, K. S. (author)
- (creator_code:org_t)
- 2012-06-20
- 2012
- English.
- In: Proceedings of the Royal Society B-Biological Sciences. - : The Royal Society. - 0962-8452 .- 1471-2954. ; 279:1743, s. 3635-3642
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Density-independent and density-dependent variables both affect the spatial distributions of species. However, their effects are often separately addressed using different analytical techniques. We apply a spatially explicit regression framework that incorporates localized, interactive and threshold effects of both density-independent (water temperature) and density-dependent (population abundance) variables, to study the spatial distribution of a well-monitored flatfish population in the eastern Bering Sea. Results indicate that when population biomass was beyond a threshold a further increase in biomass-promoted habitat expansion in a non-additive fashion with water temperature. In contrast, during years of low population size, habitat occupancy was affected positively only by water temperature. These results reveal the spatial signature of intraspecific abundance distribution relationships as well as the non-additive and non-stationary responses of species spatial dynamics. Furthermore, these results underscore the importance of implementing analytical techniques that can simultaneously account for density-dependent and density-independent sources of variability when studying geographical distribution patterns.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Fisk- och akvakulturforskning (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Fish and Aquacultural Science (hsv//eng)
Keyword
- abundance-distribution
- spatial dynamics
- density-dependent habitat selection
- Bering Sea
- pollock theragra-chalcogramma
- cod gadus-morhua
- abundance-occupancy
- relationships
- dependent habitat selection
- eastern bering-sea
- southern
- gulf
- st-lawrence
- metapopulation dynamics
- geographic-distribution
- environmental-change
Publication and Content Type
- ref (subject category)
- art (subject category)
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