BIRD ASSEMBLAGES IN TEMPERATE FORESTS OF NORTH-AMERICA AND SOUTH-AMERICA - A COMPARISON OF DIVERSITY, DYNAMICS, GUILD STRUCTURE, AND RESOURCE USE

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dc.contributor.authorJAKSIC, FM
dc.contributor.authorFEINSINGER, P
dc.date.accessioned2025-01-23T19:22:27Z
dc.date.available2025-01-23T19:22:27Z
dc.date.issued1991
dc.description.abstractUsing available data on entire bird assemblages of temperate forests in North and South America, we compare ecological patterns and dynamics between continents and suggest a comprehensive but low-cost research program to fill some of the many conspicuous gaps in the present state of knowledge. The scanty data available for comparison suggest that ecological trends of avifaunas are reasonably similar between grossly similar forest types on the two continents, but that important dissimilarities also occur due to different phylogenies, geologic histories, compositions of vegetation, and climate. For example, fruits apparently provide a steadier resource base in South America than in North America, whereas masting seed-, nut-, and cone-bearing trees, and "masting" insect larvae seem more prevalent in North than in South America. Accordingly, the South American avifaunas studied to date contain substantial proportions of frugivores or frugivore-insectivores, whereas North American avifaunas appear to contain larger numbers of opportunistic species and/or seed-, nut-, and cone-feeding species. We propose that North American temperate forests are more heterogeneous, seasonal, dynamic, and irruptive than their South American counterparts, from a bird's eye view. The consequence could be that South American avifaunas are less opportunistic than their North American counterparts in response to spatiotemporal heterogeneity in resources or community structure; that is, they migrate less over short and long distances. Nevertheless, data are not available to test this assertion. We propose a careful comparative study of avifaunas in evergreen and nearby deciduous forests on both continents.
dc.fuente.origenWOS
dc.identifier.issn0716-078X
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/99039
dc.identifier.wosidWOS:A1991JM19800008
dc.issue.numero3
dc.language.isoen
dc.pagina.final510
dc.pagina.inicio491
dc.revistaRevista chilena de historia natural
dc.rightsacceso restringido
dc.subjectAVIFAUNA
dc.subjectAVIFAUNAL DYNAMICS
dc.subjectGUILD STRUCTURE
dc.subjectRESOURCE USE
dc.subjectMIGRATION
dc.subjectINTERCONTINENTAL COMPARISON
dc.subjectSEASONALITY
dc.subjectUNITED-STATES
dc.subjectCHILE
dc.subjectARGENTINA
dc.subject.ods13 Climate Action
dc.subject.ods14 Life Below Water
dc.subject.ods15 Life on Land
dc.subject.odspa13 Acción por el clima
dc.subject.odspa14 Vida submarina
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleBIRD ASSEMBLAGES IN TEMPERATE FORESTS OF NORTH-AMERICA AND SOUTH-AMERICA - A COMPARISON OF DIVERSITY, DYNAMICS, GUILD STRUCTURE, AND RESOURCE USE
dc.typeartículo
dc.volumen64
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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