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Does probability of occurrence relate to population dynamics?

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dc.contributor.author Thuiller, Wilfried en
dc.contributor.author Münkemüller, Tamara en
dc.contributor.author Schiffers, Katja H. en
dc.contributor.author Georges, Damien en
dc.contributor.author Dullinger, Stefan en
dc.contributor.author Eckhart, Vincent M. en
dc.contributor.author Edwards, Thomas C. en
dc.contributor.author Gravel, Dominique en
dc.contributor.author Kunstler, Georges en
dc.contributor.author Merow, Cory en
dc.contributor.author Moore, Kara en
dc.contributor.author Piedallu, Christian en
dc.contributor.author Vissault, Steve en
dc.contributor.author Zimmermann, Niklaus E. en
dc.contributor.author Zurell, Damaris en
dc.contributor.author Schurr, Frank M. en
dc.date.accessioned 2015-04-20T15:16:13Z
dc.date.available 2015-04-20T15:16:13Z
dc.date.issued 2014
dc.identifier.citation Thuiller, Wilfried, Münkemüller, Tamara, Schiffers, Katja H., Georges, Damien, Dullinger, Stefan, Eckhart, Vincent M., Edwards, Thomas C., Gravel, Dominique, Kunstler, Georges, Merow, Cory, Moore, Kara, Piedallu, Christian, Vissault, Steve, Zimmermann, Niklaus E., Zurell, Damaris, and Schurr, Frank M. 2014. "Does probability of occurrence relate to population dynamics?." <em>Ecography</em>. 37 (12):1155&ndash;1166. <a href="https://doi.org/10.1111/ecog.00836">https://doi.org/10.1111/ecog.00836</a> en
dc.identifier.issn 0906-7590
dc.identifier.uri http://hdl.handle.net/10088/25898
dc.description.abstract Hutchinson defined species&#39; realized niche as the set of environmental conditions in which populations can persist in the presence of competitors. In terms of demography, the realized niche corresponds to the environments where the intrinsic growth rate (r) of populations is positive. Observed species occurrences should reflect the realized niche when additional processes like dispersal and local extinction lags do not have overwhelming effects. Despite the foundational nature of these ideas, quantitative assessments of the relationship between range-wide demographic performance and occurrence probability have not been made. This assessment is needed both to improve our conceptual understanding of species&#39; niches and ranges and to develop reliable mechanistic models of species geographic distributions that incorporate demography and species interactions. The objective of this study is to analyse how demographic parameters (intrinsic growth rate r and carrying capacity K ) and population density (N ) relate to occurrence probability (Pocc ). We hypothesized that these relationships vary with species&#39; competitive ability. Demographic parameters, density, and occurrence probability were estimated for 108 tree species from four temperate forest inventory surveys (Québec, western USA, France and Switzerland). We used published information of shade tolerance as indicators of light competition strategy, assuming that high tolerance denotes high competitive capacity in stable forest environments. Interestingly, relationships between demographic parameters and occurrence probability did not vary substantially across degrees of shade tolerance and regions. Although they were influenced by the uncertainty in the estimation of the demographic parameters, we found that r was generally negatively correlated with Pocc, while N, and for most regions K, was generally positively correlated with Pocc. Thus, in temperate forest trees the regions of highest occurrence probability are those with high densities but slow intrinsic population growth rates. The uncertain relationships between demography and occurrence probability suggests caution when linking species distribution and demographic models. en
dc.relation.ispartof Ecography en
dc.title Does probability of occurrence relate to population dynamics? en
dc.type Journal Article en
dc.identifier.srbnumber 128008
dc.identifier.doi 10.1111/ecog.00836
rft.jtitle Ecography
rft.volume 37
rft.issue 12
rft.spage 1155
rft.epage 1166
dc.description.SIUnit SERC en
dc.description.SIUnit Peer-reviewed en
dc.citation.spage 1155
dc.citation.epage 1166

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