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Considering Interactions: Incorporating Biotic Interactions into Viability Assessment

  • Chapter
Population Viability in Plants

Part of the book series: Ecological Studies ((ECOLSTUD,volume 165))

Abstract

Most analyses of population viability focus on changes in numbers of the focal species independent of other members of their community or any other biotic interactions. It is difficult to incorporate all relevant factors into a viability analysis, but leaving out biotic interactions may be a critical flaw in some analyses. While single-species population viability analyses (PVAs) implicitly incorporate the effect of species interactions on population growth rate parameters (i.e., vital rates), models that explicitly consider changes in species dynamics as ecological conditions change may be needed. Unfortunately, these models will significantly increase data requirements. Because robust data sets are notoriously difficult to acquire even for single-species PVAs, it is important to evaluate the relative importance of species interactions before considering development of a PVA model that incorporates them explicitly. In this chapter, we discuss the various kinds of interactions that plants are involved in, evaluate when species interactions are likely to matter, consider strategies for deciding when to incorporate these interactions into PVA models, and discuss relevant modeling approaches.

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  1. M. A. Morales
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  2. D. W. Inouye
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  3. M. J. Leigh
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  4. G. Lowe
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  1. Department of Environmental Science and Policy, University of California, Davis, One Shields Avenue, Davis, California, 95616, USA

    Christy A. Brigham  & Mark W. Schwartz  & 

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Morales, M.A., Inouye, D.W., Leigh, M.J., Lowe, G. (2003). Considering Interactions: Incorporating Biotic Interactions into Viability Assessment. In: Brigham, C.A., Schwartz, M.W. (eds) Population Viability in Plants. Ecological Studies, vol 165. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-09389-4_10

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  • DOI: https://doi.org/10.1007/978-3-662-09389-4_10

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