Endemic birds as indicators of human impact and environment change: comparative biogeography and landscape ecology of East-Pacific island systems
Zusammenfassung der Projektergebnisse
The out-lined research plan previously presented to the German Research Foundation (DFG) was successfully realized. Three months of field work in different regions of Mexico were conducted from mid- February to late March in 2009 and 2010. Data were collected by field work or literature search regarding all study areas: Mainland Mexico, Chamela Reserve; Coastal Marias Islands, 100 km off the mainland; Oceanic Revillagigedo Islands, 550-1000 km off the mainland. Fortunately all field work units were conducted without serious problems / inquiries. Therefore at the end of the stay time was left. This offered the opportunity to add another study site / bird population to the research plan. The fourth study site was: Coastal Isabel Island, 30 km off the mainland (Nayarit). Data were collected according to several thematic complexes: bird ecology, biogeography, biodiversity, habitat use. Thus data were collected according to several endemic and nonendemic species and subspecies of birds. Through the collected data for the first time a comparison of these study areas according to biodiversity of birds became possible, and a first publication is submitted to a peer review journal. As one overall aim is the comparison of southern Pacific and northern Pacific island systems, recent publications dealing with the Biogeography and ecology of birds from the Chilean Juan Fernandez Islands are added in this report, although these related field surveys were not funded by the German Research Foundation. In the list of publications the scientific output is given since the year funding.
Projektbezogene Publikationen (Auswahl)
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Apistogramma barlow! spec, nov.: Description of a new facultative mouth-breeding cichlid species (Teleostei, Perciformes, Geophaginae) from Northern Peru. Vertebrate Zoology, Vol. 58. 2008, Issue 1, pp. 49-66.
Römer, U. & Hahn, I.
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Biogeography, diversity, and conservation of the birds of the Juan Fernández Islands, Chile. Vertebrate Zoology, Vol. 59. 2009, Issue 1, pp. 103-114.
Hahn, I., Römer, U., Vergara, P., Walter, H.
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Linking edge effects and patch size effects: Importance of matrix nest predators. Ecological Modelling, Vol. 220. 2009, Issues 9–10, pp. 1189–1196.
Vergara, P. & Hahn, I.
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Conserving Chile's most critically endangered bird species: First data on foraging, feeding, and food items ofthe Mäsafuera Rayadito (Aves: Furnariidae). Vertebrate Zoologym Vol. 60.2010, Issue 3, pp. 233-242.
Hahn, I., Römer, U., Vergara, P. M.
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Description of Dicrossus foirni sp. n. and Dicrossus warzeli sp. n. (Teleostei: Perciformes), two new cichlid species from the Rio Negro and the Rio Tapajos Systems, Amazon Drainage, Brazil. Vertebrate Zoology, Vol. 60. 2010, Issue 2, pp. 123-138.
Römer, U., Hahn, I., Vergara, P.
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Forest structures of the Juan Fernandez Islands, Chile: significance for bird community and conservation. Geo-Oko, Vol. 31. 2010, pp. 28–49.
Hahn, I., Vergara, P., Römer, U.
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The importance of forest patch networks for the conservation of the Thorn-tailed Rayaditos in central Chile. Ecological Research, Vol. 25. 2010, pp. 683-690.
Vergara, P.M., I. Hahn, H. Zeballos & J. J. Armesto
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Apistogramma playayacu sp. nov.: Description of a new cichlid species (Teleostei: Perciformes: Geophaginae) from the Rio Napo system, Ecuador. Vertebrate Zoology, Vol. 61. 2011, issue 3, pp. 321–333.
Römer, U., Hahn, I.
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Habitat selection and Population trends in terrestrial bird species of Robinson Crusoe Island: Habitat generalists vs. forest specialists. Biodiversity and Conservation. Biodiversity and Conservation, Vol. 20. 2011, Issue 12, pp. 2797-2813.
Hahn, I., Vergara, P., Römer, U.
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Importance of environmental nest attributes in the conservation of Juan Fernandez endemic landbirds. Bird Conservation International, Vol. 21. 2011, Issue 4, pp 460-476.
Hahn, I., Vergara, P., Römer, U.
