Landscape patterns and dispersal success: simulated population dynamics in the brown treecreeper

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dc.contributorVirginia Techen
dc.contributor.authorCooper, C. B.en
dc.contributor.authorWalters, J. R.en
dc.contributor.authorPriddy, J.en
dc.contributor.departmentBiological Sciencesen
dc.date.accessed2014-03-11en
dc.date.accessioned2014-03-27T13:06:09Zen
dc.date.available2014-03-27T13:06:09Zen
dc.date.issued2002-12en
dc.description.abstractWe used a spatially explicit, individual-based simulation model to explain the possible role of patch isolation in causing observed declines of Brown Treecreepers (Climacteris picumnits) in northern New South Wales, Australia. Using aerial photographs and a geographic information system, we created a spatially realistic landscape in which territories were constrained to woodlands and the matrix composition mimicked the actual landscape in the study area. We compared observed population behavior to the outcome Of Simulations based on two dispersal movement rules and three dispersal mortality rules. Under the first movement rule, a dispersing bird's initial direction was selected at random (Random); under the second rule, a bird's initial direction was toward its nearest neighbor (Neighbor). The first mortality rule used a constant mortality rate for dispersing birds, whereas the second and third varied mortality rate dependent on habitat type traversed. In simulations using the Random movement rule, populations in contiguous habitat were relatively stable, whereas populations in fragmented habitat steadily declined due to low female recruitment, which is the same pattern observed in the real population. Populations in both contiguous and fragmented habitat increased under the Neighbor movement rule, suggesting that population dynamics may be sensitive to dispersal search patterns. Varying mortality rate with habitat type had a large effect on population behavior even though long-distance dispersal was infrequent. Thus, for this cooperative breeder, where territories become clumped due to a high rate of territorial budding, matrix habitats continue to influence overall population performance. In this system, conservation efforts must address the quality of the matrix habitats as well as the configuration of remaining habitat.en
dc.description.sponsorshipSigma Xien
dc.description.sponsorshipGraduate Research and Development Program grant from VPI&SUen
dc.description.sponsorshipNational Science Foundation Dissertation Improvement Grant (DEB-9801083)en
dc.description.sponsorshipH. T. Bailey Foundation of VPI&SUen
dc.identifier.citationCaren B. Cooper, Jeffrey R. Walters, and Jeffery Priddy 2002. LANDSCAPE PATTERNS AND DISPERSAL SUCCESS: SIMULATED POPULATION DYNAMICS IN THE BROWN TREECREEPER. Ecological Applications 12:1576-1587. http://dx.doi.org/10.1890/1051-0761(2002)012[1576:LPADSS]2.0.CO;2en
dc.identifier.doihttps://doi.org/10.2307/3099923en
dc.identifier.issn1051-0761en
dc.identifier.urihttp://hdl.handle.net/10919/46859en
dc.identifier.urlhttp://www.esajournals.org/doi/pdf/10.1890/1051-0761%282002%29012%5B1576%3ALPADSS%5D2.0.CO%3B2en
dc.language.isoen_USen
dc.publisherEcological Society of Americaen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectaustralian woodlandsen
dc.subjectbrown treecreeperen
dc.subjectclimacteris picumnusen
dc.subjectcooperative breederen
dc.subjectdispersal successen
dc.subjecthabitat fragmentationen
dc.subjectindividual-based spatially explicit modelen
dc.subjectisolation effectsen
dc.subjectlandscapeen
dc.subjectpatternsen
dc.subjectsimulated population dynamicsen
dc.subjecthabitat fragmentationen
dc.subjectconservation biologyen
dc.subjectforest fragmentationen
dc.subjectbreeding birdsen
dc.subjectscaleen
dc.subjectmodelsen
dc.subjectmanagementen
dc.subjectmechanismsen
dc.subjectresponsesen
dc.subjectcorridorsen
dc.titleLandscape patterns and dispersal success: simulated population dynamics in the brown treecreeperen
dc.title.serialEcological Applicationsen
dc.typeArticle - Refereeden

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