Biodiversity and biogeography of birds in Pacific Mexico along an isolation gradient from mainland Chamela via coastal Marias to oceanic Revillagigedo Islands

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dc.contributor.authorHahn, Ingo J.
dc.contributor.authorHogeback, Steffen
dc.contributor.authorRoemer, Uwe
dc.contributor.authorVergara, Pablo M.
dc.date.accessioned2025-01-20T23:58:03Z
dc.date.available2025-01-20T23:58:03Z
dc.date.issued2012
dc.description.abstractFollowing an isolation gradient in West-Mexico the avifauna of three study areas is investigated, on mainland reserve and two island groups. The avifaunas are described and analysed regarding species richness, environmental attributes, endemism, broader ecological niches, and brood status. The taxonomical composition is determined on different hierarchy levels. Most species records come from mainland Chamela (262), followed by the coastal Marias (191) and the oceanic Revillagigedos (148). Thereof 139 bird species breed in Chamela, 61 on Marias and only 29 on the Revillagigedos. In total, in the three study areas 364 species were recorded, which belong to 22 orders. On island groups generally less taxa per hierarchy level are present than on the mainland, especially on the remote Revillagigedos. Here, on average 1.7 species are found per genus, 2.2 genera per family, and 2.5 families per order. In the analysis of the taxonomical hierarchy relations to each other an isolation gradient is identified: from mainland Chamela via the coastal Marias to the oceanic Revillagigedos the degree of relatedness decreases on average. The results support the theoretical hypothesis that on islands closely related taxa tend to exclude each other and that one generalist tends to replace several specialists. Small ecological niches are often not occupied by specialist species on islands, but are used by generalists.
dc.description.funderDeutsche Forschungsgemeinchaft (DFG)
dc.fuente.origenWOS
dc.identifier.issn1864-5755
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/95228
dc.identifier.wosidWOS:000304020200007
dc.issue.numero1
dc.language.isoen
dc.pagina.final144
dc.pagina.inicio123
dc.revistaVertebrate zoology
dc.rightsacceso restringido
dc.subjectSpecies richness
dc.subjectbiodiversity
dc.subjectisland biogeography
dc.subjectisland theory
dc.subjectendemics
dc.subjectendangered species
dc.subjectconservation
dc.subjectIsla Isabel
dc.subjectMarias
dc.subjectRevillagigedo
dc.subjectSocorro
dc.subjectMexican Pacific
dc.subject.ods14 Life Below Water
dc.subject.ods13 Climate Action
dc.subject.ods15 Life on Land
dc.subject.odspa14 Vida submarina
dc.subject.odspa13 Acción por el clima
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleBiodiversity and biogeography of birds in Pacific Mexico along an isolation gradient from mainland Chamela via coastal Marias to oceanic Revillagigedo Islands
dc.typeartículo
dc.volumen62
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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