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Identifying non-invasible habitats for marine copepods using temperature-dependent R0. Open Access

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Author or creator
Rajakaruna, H.
Strasser, C.
Lewis, M. A.
Additional contributors
Subject/Keyword
stage-structured population models
marine copepods
net reproductive rate
ordinary differential equations
temperature
Pseudodiaptomus marinus
habitat suitability
ecological modeling
habitat invasibility
invasive species
Type of item
Journal Article (Published)
Language
English
Place
Time
Description
If a non-indigenous species is to thrive and become invasive it must first persist under its new set of environmental conditions. Net reproductive rate (R 0) represents the average number of female offspring produced by a female over its lifetime, and has been used as a metric of population persistence. We modeled R 0 as a function of ambient water temperature (T) for the invasive marine calanoid copepod Pseudodiaptomus marinus, which is introduced to west coast of North America from East Asia by ship ballast water. The model was based on temperature-dependent stage-structured population dynamics given by a system of ordinary differential equations. We proposed a methodology to identify habitats that are non-invasible for P. marinus using the threshold of R 0(T) < 1 in order to identify potentially invasible habitats. We parameterized the model using published data on P. marinus and applied R 0(T) to identify the range of non-invasible habitats in a global scale based on sea surface temperature data. The model predictions matched the field evidence of species occurrences well.
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DOI
doi:10.7939/R3GQ6R56Z
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© 2012 Springer. This version of...
Citation for previous publication
Rajakaruna, H., Strasser, C., and Lewis, M. (2012). Identifying non-invasible habitats for marine copepods using temperature-dependent R 0. Biological Invasions, 14(3), 633-647. doi: 10.1007/s10530-011-0104-x
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