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23.05.2017 | Original article | Ausgabe 2/2017 Open Access

Population Ecology 2/2017

The influence of time since introduction on the population growth of introduced species and the consequences for management

Zeitschrift:
Population Ecology > Ausgabe 2/2017
Autoren:
Hiroyuki Yokomizo, Takenori Takada, Keiichi Fukaya, John G. Lambrinos
Wichtige Hinweise

Electronic supplementary material

The online version of this article (doi:10.​1007/​s10144-017-0581-6) contains supplementary material, which is available to authorized users.
Hiroyuki Yokomizo is the recipient of the 8th Population Ecology Young Scientist Award.

Abstract

Several processes likely act to change the demographic rates of introduced species over time, and this changing demography could influence the optimal management of invasive populations. Optimal management strategies should be derived based on the demography. However, we have a poor understanding of the degree to which the demography of introduced species changes following initial introduction. We used published matrix population models of introduced plant populations to test how population growth rate and elasticity change with time since introduction. We did not find a significant relationship between population growth rate and time since introduction. However, elasticity to stasis increased while elasticity to growth decreased with time since introduction. Broadly, as time since introduction progressed the elasticities of the introduced plant populations became more similar to those that have been reported for native species. These results suggest that the optimal management strategy should be derived incorporating elasticity through time, especially when the time scope of management is long or the available demographic data were obtained in the past.

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Zusatzmaterial
Supplementary material 1 (XLSX 26 KB)
10144_2017_581_MOESM1_ESM.xlsx
Supplementary material 2 (XLSX 64 KB)
10144_2017_581_MOESM2_ESM.xlsx
Supplementary material 3 (PDF 171 KB)
10144_2017_581_MOESM3_ESM.pdf
Literatur
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