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Invasive Rat Research and Management on Tropical Islands: A Case Study in the Iles Eparses by Ringler, David; Le Corre, Matthieu; Russell, James is a Environmental Science article available to read on EtoBox.

What is Invasive Rat Research and Management on Tropical Islands: A Case Study in the Iles Eparses about?

Invasive rats on oceanic islands impact a large number of native species. Control programs, and in cases complete eradication, are used to alleviate these impacts. Basic biological data on rodent biology facilitates the design of management plans, and are particularly required for programmes on tropical islands where they are lacking. Here, we test complex environmental effects and their interactions on two tropical islands (Iles Eparses) that may alter black rat demography, space use dynamics, and inform rodent management. Five years of summer and winter trapping data were analysed using spatially explicit capture-recapture to determine rat population dynamics and calculate rat range size, coupled with spool and line experiments. Variation in demography and individual rat space use is primarily driven by bottom-up effects of seasonal rainfall pulses on habitat, but is altered by island-specific contexts. In the absence of other introduced mammals, rats tend to have stable range overlap throughout the year but seasonal home range size fluctuations associated with rat density. The presence of other introduced mammals causes a more variable response in home range size, although predi

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Author

Ringler, David; Le Corre, Matthieu; Russell, James

Publisher

eScholarship; Vertebrate Pest Conference.; [Davis] Calif.: University of California Davis; Oakland Calif.: eScholarship Publishing University of California; California Digital Library (CDL) (ISSN 2641-273X)

Published

2014

Language

EN

Field

Environmental Science (Physical Sciences)