The relationship between invader abundance and impact

By H. Sofaer, Catherine S. Jarnevich, I. Pearse. Ecosphere, 2018

108 citations recorded by the source corpus.

The impacts of invasive species generally increase with their abundance, but the form of invader abundance–impact relationships remain poorly described. We highlight the utility of abundance–impact curves for three questions. First, abundance–impact relationships can clarify whether prevention and management should focus on the species likely to become abundant or those likely to cause large impacts per individual. Second, comparing abundance–impact relationships between native and exotic species can reveal any systematic differences in their effects on ecological systems. Third, identifying any thresholds in the relationship between invader impact and abundance can be used to select management targets and design invasive species control strategies. With increasing extent and resolution of datasets of invasive organisms worldwide, we now have the opportunity to explore in detail the form and context dependence of the abundance–impact relationship. Doing so provides opportunities to improve the prediction of invader impact, to better understand the differences between exotic and resident organisms, and to scale the impacts of invasive species from localities to ranges.

Subfields: Ecological Modeling, Ecology, Nature and Landscape Conservation

View Paper: https://www.semanticscholar.org/paper/66266e5a6c87b986daccb8753f3ce8d32d02f902

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In Ecological Modeling

In Ecology

In Nature and Landscape Conservation

Citations in the corpus

Four priority areas to advance invasion science in the face of rapid environmental change (2020, background): “…variation in impact direction and magnitude could be improved through experimental and theoretical investigations of the relationship between an invader’s per capita effect and its abundance (Yokomizo et al. 2009; Cronin et al. 2015; Sofaer et al. 2018; Bradley et al. 2019; Strayer 2020).”