DSpace Repository

Bird community composition across an Andean tree-line ecotone

Show simple item record

dc.contributor.author Lloyd, H.
dc.contributor.author Sevillano Ríos, S.
dc.contributor.author Marsden, S.J.
dc.contributor.author Valdes Velasquez, Armando
dc.date.accessioned 2022-01-18T19:26:53Z
dc.date.available 2022-01-18T19:26:53Z
dc.date.issued 2012
dc.identifier.uri https://hdl.handle.net/20.500.12866/10981
dc.description.abstract Few studies have found strong evidence to suggest that ecotones promote species richness and diversity. In this study we examine the responses of a high-Andean bird community to changes in vegetation and topographical characteristics across an Andean tree-line ecotone and adjacent cloud forest and puna grassland vegetation in southern Peru. Over a 6-month period, birds and vegetation were surveyed using a 100m fixed-width Distance Sampling point count method. Vegetation analyses revealed that the tree-line ecotone represented a distinctive high-Andean vegetation community that was easily differentiated from the adjacent cloud forest and puna grassland based on changes in tree-size characteristics and vegetation cover. Bird community composition was strongly seasonal and influenced by a pool of bird species from a wider elevational gradient. There were also clear differences in bird community measures between tree-line vegetation, cloud forest and puna grassland with species turnover (β-diversity) most pronounced at the tree-line. Canonical Correspondence Analysis revealed that the majority of the 81 bird species were associated with tree-line vegetation. Categorizing patterns of relative abundance of the 42 most common species revealed that the tree-line ecotone was composed primarily of cloud forest specialists and habitat generalists, with very few species from the puna grassland. Only two species, Thlypopsis ruficeps and Anairetes parulus, both widespread Andean species more typical of montane woodland vegetation edges, were categorized as ecotone specialists. However, our findings were influenced by significant differences in species detectability between all three vegetation communities. Our study highlights the importance of examining ecotones at an appropriate spatial and temporal scale. Selecting a suitable distance between sampling points based on the detection probabilities of the target bird species is essential to obtain an unbiased picture of how ecotones influence avian richness and diversity. en_US
dc.language.iso eng
dc.publisher Wiley
dc.relation.ispartofseries Austral Ecology
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
dc.subject Peru en_US
dc.subject species diversity en_US
dc.subject community response en_US
dc.subject Anairetes parulus en_US
dc.subject Andes en_US
dc.subject Aves en_US
dc.subject avifauna en_US
dc.subject Bird communities en_US
dc.subject cloud forest en_US
dc.subject Ecotone specialization en_US
dc.subject generalist en_US
dc.subject grassland en_US
dc.subject montane forest en_US
dc.subject Ordination en_US
dc.subject passerine en_US
dc.subject specialist en_US
dc.subject species richness en_US
dc.subject Thlypopsis ruficeps en_US
dc.subject topographic effect en_US
dc.subject Tree-line en_US
dc.subject treeline en_US
dc.subject turnover en_US
dc.subject vegetation dynamics en_US
dc.subject woodland en_US
dc.title Bird community composition across an Andean tree-line ecotone en_US
dc.type info:eu-repo/semantics/article
dc.identifier.doi https://doi.org/10.1111/j.1442-9993.2011.02308.x
dc.subject.ocde https://purl.org/pe-repo/ocde/ford#1.06.13
dc.relation.issn 1442-9993

Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

info:eu-repo/semantics/restrictedAccess Except where otherwise noted, this item's license is described as info:eu-repo/semantics/restrictedAccess

Search DSpace


My Account