NDLI: Frontier population dynamics of an invasive squirrel species: Do introduced populations function differently than those in the native range?

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Frontier population dynamics of an invasive squirrel species: Do introduced populations function differently than those in the native range?

Content Provider	Springer Nature Link
Author	Goldstein, Emily A. Butler, Fidelma Lawton, Colin
Copyright Year	2014
Abstract	Several squirrel species are biological invaders and their establishment in an area is often marked by ecological and economic costs to native species and forest crops. The eastern grey squirrel (Sciurus carolinensis Gmelin 1788) has been intentionally introduced multiple times outside of its native range but its success in establishing and spreading has not been consistent. An intensive live-trapping programme was designed to investigate the demography and population dynamics of populations of this species on the invasion frontier in the Republic of Ireland, a region marked by the slow but steady invasion of the grey squirrel. Low densities and high breeding rates distinguished these frontier populations. These results were placed in context with other frontier and established grey squirrel populations throughout their introduced and native ranges. As expected, variations in invasion speed and impact severity between regions were reflected in population demography. The highest densities, survival rates and breeding rates were recorded in Britain where the grey squirrel invasion has been most damaging. Careful comparative demographic study of invading populations could improve management outcomes, indicate differential invasibility of invaded communities, and offer clues to enhance the design of conservation reintroduction projects.
Starting Page	1181
Ending Page	1197
Page Count	17
File Format	PDF
ISSN	13873547
Journal	Biological Invasions
Volume Number	17
Issue Number	4
e-ISSN	15731464
Language	English
Publisher	Springer International Publishing
Publisher Date	2014-09-28
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Breeding rate Demography Grey squirrel Invasibility Sciurus carolinensis Secr Survival rate Ecology Freshwater & Marine Ecology Plant Sciences Developmental Biology
Content Type	Text
Resource Type	Article
Subject	Ecology Ecology, Evolution, Behavior and Systematics

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