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Article: Predation and infanticide influence ideal free choice by a parrot occupying heterogeneous tropical habitats

TitlePredation and infanticide influence ideal free choice by a parrot occupying heterogeneous tropical habitats
Authors
KeywordsDispersal
Habitat selection
Ideal free distribution
Infanticide
Parrot
Issue Date2010
PublisherSpringer Verlag. The Journal's web site is located at http://link.springer.de/link/service/journals/00442/index.htm
Citation
Oecologia, 2010, v. 163 n. 2, p. 385-393 How to Cite?
AbstractThe ideal free distribution (IFD) predicts that organisms will disperse to sites that maximize their fitness based on availability of resources. Habitat heterogeneity underlies resource variation and influences spatial variation in demography and the distribution of populations. We relate nest site productivity at multiple scales measured over a decade to habitat quality in a box-nesting population of Forpus passerinus (green-rumped parrotlets) in Venezuela to examine critical IFD assumptions. Variation in reproductive success at the local population and neighborhood scales had a much larger influence on productivity (fledglings per nest box per year) than nest site or female identity. Habitat features were reliable cues of nest site quality. Nest sites with less vegetative cover produced greater numbers of fledglings than sites with more cover. However, there was also a competitive cost to nesting in high-quality, low-vegetative cover nest boxes, as these sites experienced the most infanticide events. In the lowland local population, water depth and cover surrounding nest sites were related with F. passerinus productivity. Low vegetative cover and deeper water were associated with lower predation rates, suggesting that predation could be a primary factor driving habitat selection patterns. Parrotlets also demonstrated directional dispersal. Pairs that changed nest sites were more likely to disperse from poor-quality nest sites to high-quality nest sites rather than vice versa, and juveniles were more likely to disperse to, or remain in, the more productive of the two local populations. Parrotlets exhibited three characteristics fundamental to the IFD: habitat heterogeneity within and between local populations, reliable habitat cues to productivity, and active dispersal to sites of higher fitness. © 2010 The Author(s).
Persistent Identifierhttp://hdl.handle.net/10722/169858
ISSN
2015 Impact Factor: 2.902
2015 SCImago Journal Rankings: 1.985
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorBonebrake, TCen_HK
dc.contributor.authorBeissinger, SRen_HK
dc.date.accessioned2012-10-25T04:57:07Z-
dc.date.available2012-10-25T04:57:07Z-
dc.date.issued2010en_HK
dc.identifier.citationOecologia, 2010, v. 163 n. 2, p. 385-393en_HK
dc.identifier.issn0029-8549en_HK
dc.identifier.urihttp://hdl.handle.net/10722/169858-
dc.description.abstractThe ideal free distribution (IFD) predicts that organisms will disperse to sites that maximize their fitness based on availability of resources. Habitat heterogeneity underlies resource variation and influences spatial variation in demography and the distribution of populations. We relate nest site productivity at multiple scales measured over a decade to habitat quality in a box-nesting population of Forpus passerinus (green-rumped parrotlets) in Venezuela to examine critical IFD assumptions. Variation in reproductive success at the local population and neighborhood scales had a much larger influence on productivity (fledglings per nest box per year) than nest site or female identity. Habitat features were reliable cues of nest site quality. Nest sites with less vegetative cover produced greater numbers of fledglings than sites with more cover. However, there was also a competitive cost to nesting in high-quality, low-vegetative cover nest boxes, as these sites experienced the most infanticide events. In the lowland local population, water depth and cover surrounding nest sites were related with F. passerinus productivity. Low vegetative cover and deeper water were associated with lower predation rates, suggesting that predation could be a primary factor driving habitat selection patterns. Parrotlets also demonstrated directional dispersal. Pairs that changed nest sites were more likely to disperse from poor-quality nest sites to high-quality nest sites rather than vice versa, and juveniles were more likely to disperse to, or remain in, the more productive of the two local populations. Parrotlets exhibited three characteristics fundamental to the IFD: habitat heterogeneity within and between local populations, reliable habitat cues to productivity, and active dispersal to sites of higher fitness. © 2010 The Author(s).en_HK
dc.languageengen_US
dc.publisherSpringer Verlag. The Journal's web site is located at http://link.springer.de/link/service/journals/00442/index.htmen_HK
dc.relation.ispartofOecologiaen_HK
dc.subjectDispersalen_HK
dc.subjectHabitat selectionen_HK
dc.subjectIdeal free distributionen_HK
dc.subjectInfanticideen_HK
dc.subjectParroten_HK
dc.subject.meshAnimalsen_US
dc.subject.meshBehavior, Animal - Physiologyen_US
dc.subject.meshChoice Behavior - Physiologyen_US
dc.subject.meshEcosystemen_US
dc.subject.meshFeeding Behavior - Physiologyen_US
dc.subject.meshFemaleen_US
dc.subject.meshFooden_US
dc.subject.meshGeographyen_US
dc.subject.meshNesting Behavior - Physiologyen_US
dc.subject.meshOvum - Growth & Development - Physiologyen_US
dc.subject.meshParrots - Growth & Development - Physiologyen_US
dc.subject.meshPopulation Dynamicsen_US
dc.subject.meshPredatory Behavior - Physiologyen_US
dc.subject.meshReproduction - Physiologyen_US
dc.subject.meshTropical Climateen_US
dc.subject.meshVenezuelaen_US
dc.subject.meshWateren_US
dc.titlePredation and infanticide influence ideal free choice by a parrot occupying heterogeneous tropical habitatsen_HK
dc.typeArticleen_HK
dc.identifier.emailBonebrake, TC: tbone@hku.hken_HK
dc.identifier.authorityBonebrake, TC=rp01676en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1007/s00442-010-1566-8en_HK
dc.identifier.pmid20135326-
dc.identifier.scopuseid_2-s2.0-77952321742en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77952321742&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume163en_HK
dc.identifier.issue2en_HK
dc.identifier.spage385en_HK
dc.identifier.epage393en_HK
dc.identifier.isiWOS:000277716200012-
dc.publisher.placeGermanyen_HK
dc.identifier.scopusauthoridBonebrake, TC=12798028100en_HK
dc.identifier.scopusauthoridBeissinger, SR=7003831942en_HK
dc.identifier.citeulike6782917-

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