A test for a shift in the boundary of the geographical range of a species | Zendy

Andrew R. Solow | Zendy; Andrew Beet | Zendy; Uri Roll | Zendy; Lewi Stone | Zendy

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A test for a shift in the boundary of the geographical range of a species

Author(s) -

Andrew R. Solow,

Andrew Beet,

Uri Roll,

Lewi Stone

Publication year - 2014

Publication title -

biology letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.596

H-Index - 110

eISSN - 1744-957X

pISSN - 1744-9561

DOI - 10.1098/rsbl.2013.0808

Subject(s) - biology , boundary (topology) , range (aeronautics) , ecology , climate change , species distribution , test (biology) , habitat , mathematics , mathematical analysis , materials science , composite material

One predicted impact of climate change is a poleward shift in the boundaries of species ranges. Existing methods for identifying such a boundary shift based on changes in the observed pattern of occupancy within a grid of cells are sensitive to changes in the overall rate of sightings and their latitudinal distribution that are unconnected to a boundary shift. A formal test for a boundary shift is described that allows for such changes. The test is applied to detect northward shifts in the northern boundary of the Essex skipper (Thymelicus lineola) butterfly and the European goldfinch (Carduelis carduelis) in Great Britain. A shift is detected in the latter case but not in the former. Results from a simulation study are presented showing that the test performs well.

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