File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: The usefulness of sensitivity analysis for predicting the effects of cat predation on the population dynamics of their avian prey

TitleThe usefulness of sensitivity analysis for predicting the effects of cat predation on the population dynamics of their avian prey
Authors
KeywordsHouse Sparrow Passer domesticus
Winter Wren Troglodytes troglodytes
Issue Date2008
Citation
Ibis, 2008, v. 150, n. SUPPL.1, p. 100-113 How to Cite?
AbstractSensitivity analyses of population projection matrix (PPM) models are often used to identify life-history perturbations that will most influence a population's future dynamics. Sensitivities are linear extrapolations of the relationship between a population's growth rate and perturbations to its demographic parameters. Their effectiveness depends on the validity of the assumption of linearity. Here we assess whether sensitivity analysis is an appropriate tool to investigate the effect of predation by cats on the population growth rates of their avian prey. We assess whether predation by cats leads to non-linear effects on population growth and compare population growth rates predicted by sensitivity analysis with those predicted by a non-linear simulation. For a two-stage, age-classified House Sparrow Passer domesticus PPM slight non-linearity arose when PPM elements were perturbed, but perturbation to the vital rates underlying the matrix elements had a linear impact on population growth rate. We found a similar effect with a slightly larger three-stage, age-classified PPM for a Winter Wren Troglodytes troglodytes population perturbed by cat predation. For some avian species, predation by cats may cause linear or only slightly nonlinear impacts on population growth rates. For these species, sensitivity analysis appears to be a useful conservation tool. However, further work on multiple perturbations to avian prey species with more complicated life histories and higher-dimension PPM models is required. © 2008 The Authors.
Persistent Identifierhttp://hdl.handle.net/10722/230822
ISSN
2015 Impact Factor: 1.804
2015 SCImago Journal Rankings: 1.251

 

DC FieldValueLanguage
dc.contributor.authorMaclean, Mairead M.-
dc.contributor.authorCarslake, David J.-
dc.contributor.authorEvans, Matthew R.-
dc.contributor.authorTownley, Stuart-
dc.contributor.authorHodgson, David J.-
dc.date.accessioned2016-09-01T06:06:53Z-
dc.date.available2016-09-01T06:06:53Z-
dc.date.issued2008-
dc.identifier.citationIbis, 2008, v. 150, n. SUPPL.1, p. 100-113-
dc.identifier.issn0019-1019-
dc.identifier.urihttp://hdl.handle.net/10722/230822-
dc.description.abstractSensitivity analyses of population projection matrix (PPM) models are often used to identify life-history perturbations that will most influence a population's future dynamics. Sensitivities are linear extrapolations of the relationship between a population's growth rate and perturbations to its demographic parameters. Their effectiveness depends on the validity of the assumption of linearity. Here we assess whether sensitivity analysis is an appropriate tool to investigate the effect of predation by cats on the population growth rates of their avian prey. We assess whether predation by cats leads to non-linear effects on population growth and compare population growth rates predicted by sensitivity analysis with those predicted by a non-linear simulation. For a two-stage, age-classified House Sparrow Passer domesticus PPM slight non-linearity arose when PPM elements were perturbed, but perturbation to the vital rates underlying the matrix elements had a linear impact on population growth rate. We found a similar effect with a slightly larger three-stage, age-classified PPM for a Winter Wren Troglodytes troglodytes population perturbed by cat predation. For some avian species, predation by cats may cause linear or only slightly nonlinear impacts on population growth rates. For these species, sensitivity analysis appears to be a useful conservation tool. However, further work on multiple perturbations to avian prey species with more complicated life histories and higher-dimension PPM models is required. © 2008 The Authors.-
dc.languageeng-
dc.relation.ispartofIbis-
dc.subjectHouse Sparrow Passer domesticus-
dc.subjectWinter Wren Troglodytes troglodytes-
dc.titleThe usefulness of sensitivity analysis for predicting the effects of cat predation on the population dynamics of their avian prey-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1111/j.1474-919X.2008.00864.x-
dc.identifier.scopuseid_2-s2.0-50049092729-
dc.identifier.volume150-
dc.identifier.issueSUPPL.1-
dc.identifier.spage100-
dc.identifier.epage113-
dc.identifier.eissn1474-919X-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats