Title:
Autocorrelated exogenous factors and the detection of delayed density dependence

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dc.contributor.author Jiang, Lin en_US
dc.contributor.author Shao, Nan en_US
dc.contributor.corporatename Rutgers University. Dept. of Ecology, Evolution, and Natural Resources en_US
dc.date.accessioned 2011-01-31T20:09:52Z
dc.date.available 2011-01-31T20:09:52Z
dc.date.issued 2003-08
dc.description DOI: 10.1890/02-0557
dc.description © Ecological Society of America en_US
dc.description.abstract Coupled trophic interactions with specialist predators or resources are thought to be primarily responsible for generating delayed density dependence. Previous theoretical studies suggest that autocorrelation in exogenous factors could generate apparent negative delayed density dependence in populations regulated only by direct density dependence. Using both linear and nonlinear models, we show that autocorrelated exogenous factors can generate the spurious appearance of not only negative, but also positive, delayed density dependence in populations regulated only by direct density dependence. Evidence for negative delayed density dependence is found mainly in populations exhibiting monotonic deterministic stability, whereas evidence for positive delayed density dependence is found mainly in populations exhibiting damped or persistent two-point cycles, or more complex deterministic dynamics. We argue that fluctuating resources (e.g., mast seeding) in bottom-up controlled communities could qualify as autocorrelated exogenous factors and cause apparent delayed density dependence in the population of their consumers. en_US
dc.identifier.citation Jiang, Lin, and Nan Shao. 2003. Autocorrelated exogenous factors and the detection of delayed density dependence. Ecology 84:2208–2213. en_US
dc.identifier.doi 10.1890/02-0557
dc.identifier.issn 0012-9658
dc.identifier.uri http://hdl.handle.net/1853/36764
dc.language.iso en_US en_US
dc.publisher Georgia Institute of Technology en_US
dc.publisher.original Ecological Society of America
dc.subject Autocorrelation en_US
dc.subject Bottom-up en_US
dc.subject Delayed density dependence en_US
dc.subject Direct density dependence en_US
dc.subject Exogenous factors en_US
dc.subject Fluctuating resources en_US
dc.subject Time-series models en_US
dc.subject Trophic interactions en_US
dc.title Autocorrelated exogenous factors and the detection of delayed density dependence en_US
dc.type Text
dc.type.genre Article
dspace.entity.type Publication
local.contributor.author Jiang, Lin
local.contributor.corporatename College of Sciences
local.contributor.corporatename School of Biological Sciences
relation.isAuthorOfPublication d02cba61-3c50-441b-b114-f0e37910232c
relation.isOrgUnitOfPublication 85042be6-2d68-4e07-b384-e1f908fae48a
relation.isOrgUnitOfPublication c8b3bd08-9989-40d3-afe3-e0ad8d5c72b5
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