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

Yokomizo, Hiroyuki; Takada, Tappei; Fukaya, Keiichi; Lambrinos, John G.

doi:10.1007/s10144-017-0581-6

Cited by 13 publications

(8 citation statements)

References 55 publications

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“…Traditionally, fit matrix models represent the vast majority of demographic data available for comparative studies (e.g., those in the COMPADRE and COMADRE databases;Salguero-G omez et al 2015Salguero-G omez et al , 2016a or with which to assess the viability and management of species of conservation concern. Indeed, even as the accuracy of matrix models has been questioned, many synthetic reviews that reanalyze matrix models have recently appeared in the literature (Katz 2016, Csergo et al 2017, Yokomizo et al 2017). Thus, it is important to more carefully evaluate whether and when matrix models accurately capture population dynamics, and under what circumstances IPMs may do so with less bias and more precision.…”

Section: Introductionmentioning

confidence: 99%

A critical comparison of integral projection and matrix projection models for demographic analysis

Doak

Waddle

Langendorf

et al. 2021

Ecological Monographs

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Section: Introductionmentioning

confidence: 99%

A critical comparison of integral projection and matrix projection models for demographic analysis

Doak

Waddle

Langendorf

et al. 2021

Ecological Monographs

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“…Our prediction that invasive populations of F. limosus would have greater maximum feeding rates than native populations was not supported, perhaps owing to an insufficient number of populations studied. There are numerous potential explanations for differences among per capita effects of populations, including differences in resident community composition (Barrios-O'Neill et al 2014;Médoc et al 2015;Wasserman et al 2016), time since invasion (Iacarella et al 2015a(Iacarella et al , 2015cYokomizo et al 2017;Evangelista et al 2019) and abiotic conditions (Eggleston 1990;Alexander et al 2012;Iacarella et al 2015b), but we were unable to determine the cause in our distributed experiments. In mesocosm experiments, Evangelista et al (2019) found contrasting ecological impacts amongst individuals from four invasive populations of red swamp crayfish (Procambarus clarkii) and thus demonstrated that even geographically-close populations can vary in intraspecific trait variability, consistent with studies showing trait differences amongst individuals across a single expanding population (e.g.…”

Section: Discussionmentioning

confidence: 95%

Context-dependent differences in the functional responses of conspecific native and non-native crayfishes

Grimm¹,

Dick²,

Verreycken³

et al. 2020

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Invasive species are proliferating globally and cause a range of impacts, necessitating risk assessment and prioritization prior to management action. Experimentally derived estimates of per capita effects (e.g. functional responses) have been advocated as predictors of field impacts of potential invaders. However, risk assessments based on estimates from single populations can be misleading if per capita effects vary greatly across space and time. Here, we present a large-scale, multi-population comparison of per capita effects of the American spinycheek crayfish, Faxonius (formerly Orconectes) limosus—a species with an extensive invasion history in eastern North America and Europe. Functional responses were measured on individuals from six geographically disparate populations of F. limosus in its native and invaded ranges on two continents. These revealed inter-population differences in both the maximum feeding rate and functional response type that could not be explained by the biogeographic origin of the population nor by time since the invasion. We propose that other differences in source communities (including the presence of competitors) impose selective pressures for phenotypic traits that result in dissimilar per capita effects. We also compared functional responses of the congeners F. limosus and F. virilis in the presence and absence of potential competitors to examine indirect competitive effects on feeding behaviour. The maximum feeding rate of F. limosus, but not F. virilis, was suppressed in the presence of heterospecific and conspecific competitors, demonstrating how the per capita effects of these species can differ across biotic contexts. In the competitor-presence experiments, individuals from the invasive population of F. limosus consistently had a higher maximum feeding rate than those of the native F. virilis, regardless of treatment. Our results caution against invasion risk assessments that use information from only one (or a few) populations or that do not consider the biotic context of target habitats. We conclude that comparative functional responses offer a rapid assessment tool for invader ecological impacts under context dependencies when multiple populations are analyzed.

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“…Moreover, since λ 0 and dispersal distance together determine spread rate (see Skellam, 1951), our results shed further light on the role of demography as a key driver of spread in invasive plants (Coutts et al., 2011). Finally, our results can thus be used to develop optimal management strategies, which should be derived from population dynamics and their relationship with time since introduction (Yokomizo et al., 2017).…”

Section: Discussionmentioning

confidence: 99%

Inter‐ and intraspecific selection in alien plants: How population growth, functional traits and climate responses change with residence time

Brendel

Schurr

Sheppard

2020

Global Ecol. Biogeogr.

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Aim When alien species are introduced to new ranges, climate or trait mismatches may initially constrain their population growth. However, inter‐ and intraspecific selection in the new environment should cause population growth rates to increase with residence time. Using a species‐for‐time approach, we test whether with increasing residence time (a) negative effects of climatic mismatches between the species’ new and native range on population growth weaken, and (b) functional traits converge towards values that maximize population growth in the new range. Location Germany. Time period 12,000 years BP to present. Major taxa studied Forty‐six plant species of the Asteraceae family. Methods We set up a common‐garden mesocosm‐experiment using annual plant species with a wide range of residence times (7–12,000 years) and followed their population dynamics over 2 years. We calculated climatic distance between the common garden and the species’ native range. We also measured key functional traits of each species to analyse trait–demography relationships and test trait convergence with increasing residence time. Results We found no support for the hypothesis that negative effects of climatic mismatches on population growth weaken with residence time. However, seed mass had a clear negative effect on population growth. As expected under such strong directional selection between or within species, increasing residence time led seed mass to converge to low values that increase population growth. Accordingly, population growth tended to increase with residence time. Main conclusions We identify trait but not climatic mismatches as important constraints on population growth of invaders. Understanding how inter‐ and intraspecific selection shapes functional traits of alien species should improve the predictability of future invasions and help understanding of limits to the population growth and spread of invaders already present. In a broader context, this study contributes to the conceptual integration of invasion biology with community, functional and population ecology.

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

Cited by 13 publications

References 55 publications

A critical comparison of integral projection and matrix projection models for demographic analysis

A critical comparison of integral projection and matrix projection models for demographic analysis

Context-dependent differences in the functional responses of conspecific native and non-native crayfishes

Inter‐ and intraspecific selection in alien plants: How population growth, functional traits and climate responses change with residence time

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