Using niche modelling, phylogenetic methods, and field and laboratory studies, we investigated how colonisation of Scotland by a range expanding damselfly, Ischnura elegans, influences patterns of competition and niche shifts in native damselfly species, and changes in phylogenetic community structure.
Colonization by I. elegans was associated with reduced population density and niche shifts in the resident species least related to I. elegans (Lestes sponsa), reflecting enhanced competition. Furthermore, communities colonized by I. elegans exhibited phylogenetic underdispersion, reflecting patterns of relatedness and competition.
Our results provide a novel example of a potentially general mechanism whereby climate change-mediated range shifts can reduce phylogenetic diversity within high latitude communities, if colonising species are typically competitively superior to members of native communities that are least-closely-related to the coloniser.
- climate change
- range shifts
- community assembly
- non-analog communities
- thermal niche
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Fitt, R. (Contributor), Lancaster, L. (Contributor) & Fitt, R. (Contributor), DRYAD, 1 Jan 2018
Data from: Range shifting species reduce phylogenetic diversity in high latitude communities via competition
Fitt, R. N. (Creator) & Lancaster, L. (Creator), Dryad Digital Repository, 31 Jan 2018