Bird Community Heterogeneity Along Four Gradients of Different Orientations on a Temperate Mountain

Iijima, Daichi; Morimoto, Gen

doi:10.2326/osj.20.65

Cited by 7 publications

(1 citation statement)

References 38 publications

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“…Species turnover has been reported as the major driver of changes in species composition along elevational gradients ( Foord & Dippenaar-Schoeman, 2016 ; Gebrehiwot et al, 2019 ). Moreover, this component has been generally associated with changes in habitat type ( Foord & Dippenaar-Schoeman, 2016 ; Aisen et al, 2017 ; Iijima & Morimoto, 2021 ). Our results show that species turnover may also occur within the same habitat type along an elevational gradient.…”

Section: Discussionmentioning

confidence: 99%

Taxon-dependent diversity response along a temperate elevation gradient covered by grassland

Santoandré,

Ramos,

Picca

et al. 2024

PeerJ

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Elevational gradients constitute excellent systems for understanding the mechanisms that generate and maintain global biodiversity patterns. Climatic gradients associated with elevation show strong influence on species distribution in mountains. The study of mountains covered by the same habitat type is an ideal scenario to compare alternatives to the energy hypotheses. Our aim was to investigate how changes in climatic conditions along the elevational gradient drive α- and β-diversity of four taxa in a mountain system located within a grassland biome. We sampled ants, spiders, birds and plants, and measured climatic variables at six elevational bands (with 10 sampling sites each) established between 470 and 1,000 masl on a mountain from the Ventania Mountain System, Argentina. Species richness per site and β-diversity (turnover and nestedness) between the lowest band and upper sites were estimated. For most taxa, species richness declined at high elevations and energy, through temperature, was the major driver of species richness for ants, plants and birds, prevailing over productivity and water availability. The major β-diversity component was turnover for plants, spiders and birds, and nestedness for ants. The unique environmental conditions of the upper bands could favour the occurrence of specialist and endemic species.

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