dc.contributor.author | Lorenzen, Kai | |
dc.contributor.author | Enberg, Katja | |
dc.date.accessioned | 2010-10-29T11:57:35Z | |
dc.date.available | 2010-10-29T11:57:35Z | |
dc.date.issued | 2001-11-30 | |
dc.identifier.issn | 1471-2954 | |
dc.identifier.issn | 0080-455X | |
dc.identifier.uri | http://hdl.handle.net/11250/108828 | |
dc.description.abstract | It is generally assumed that fish populations are regulated primarily in the juvenile (pre-recruit) phase of the life cycle, although density dependence in growth and reproductive parameters within the recruited phase has been widely reported. Here we present evidence to suggest that density-dependent growth in the recruited phase is a key process in the regulation of many fish populations. We analyse 16 fish populations with long-term records of size-at-age and biomass data, and detect significant density-dependent growth in nine. Among-population comparisons show a close, inverse relationship between the estimated decline in asymptotic length per unit biomass density, and the long-term average biomass density of populations. A simple population model demonstrates that regulation by density-dependent growth alone is sufficient to generate the observed relationship. Density-dependent growth should be accounted for in fisheries’ assessments, and the empirical relationship established here can provide indicative estimates of the density-dependent growth parameter where population-specific data are lacking. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Royal Society Publishing | en_US |
dc.subject | population dynamics | en_US |
dc.subject | populasjonsdynamikk | en_US |
dc.subject | fisheries management | en_US |
dc.subject | fiskeriforvaltning | en_US |
dc.subject | growth | en_US |
dc.subject | vekst | en_US |
dc.title | Density-dependent growth as a key mechanism in the regulation of sh populations: evidence from among-population comparisons | en_US |
dc.type | Journal article | en_US |
dc.type | Peer reviewed | en_US |
dc.subject.nsi | VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 | en_US |
dc.source.pagenumber | 49-54 | en_US |
dc.source.volume | 269 | |
dc.source.journal | Proceedings of the Royal Society B: Biological Sciences | |
dc.source.issue | 1486 | |
dc.identifier.doi | http://dx.doi.org/10.1098/rspb.2001.1853 | |