The role of preadaptation, propagule pressure and competition in the colonization of new habitats

Alzate, Adriana; Onstein, Renske E.; Etienne, Rampal S.; Bonte, Dries

doi:10.1111/oik.06871

Cited by 27 publications

(47 citation statements)

References 68 publications

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“…This might offset some of the maladaptation and the priority effect advantage enjoyed by native species (Chase, 2003). Such interaction of traits and propagule pressure is in line with recent evidence from field and laboratory experiments (Alzate et al, 2020; Kempel et al, 2013). Still, propagule pressure alone does not explain why invasives also manage the fourth phase, landscape spread.…”

Section: Discussionsupporting

confidence: 88%

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Effects of species traits and abiotic factors during the stages of plant invasions

Vedder

Leidinger

Cabral

2020

Preprint

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1 1. The success of species invasions depends on multiple factors act-2 ing over the four invasion stages transport, colonisation, establish-3 ment, and landscape spread. Each of these stages is influenced simul-4 taneously by particular species traits and abiotic factors. While the 5 importance of many of these determinants has already been inves-6 tigated in relative isolation, they are rarely studied in combination 7 and even then mostly ignore the final phase, i.e., landscape spread. 8 2. Here we address this shortcoming by exploring the effect of both 9 species traits and abiotic factors on the success of invasions using an 10 individual-based mechanistic model, and relate those factors to the 11 stages of invasion. This approach enables us to explicitly control abi-12 otic factors (temperature as surrogate for productivity, disturbance 13 and propagule pressure) as well as to monitor whole-community trait 14 distributions of environmental adaptation, mass and dispersal abili-15 ties. We simulated introductions of plant individuals to an oceanic 16 island to assess which abiotic factors and species traits contribute to 17 invasion success.183. We found that the most influential factors were higher propagule 19 pressure and a particular set of traits. This invasion trait syndrome 20 was characterized by a relative similarity in functional traits of in-21 vasive species to natives, while invasives had on average higher en-22 vironmental tolerances, higher body mass and increased dispersal 23 abilities, i.e., were more generalist and dispersive. 24 4. Our results highlight the importance in management practice of re-25

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Section: Discussionsupporting

confidence: 88%

“…However, previous experimental studies focused mainly on the earlier stages of invasion and thus, generalized insights that include landscape spread are still missing (cf. Alzate, Onstein, Etienne, & Bonte, 2020; Kempel, Chrobock, Fischer, Rohr, & van Kleunen, 2013).…”

Section: Introductionmentioning

confidence: 99%

Effects of species traits and abiotic factors during the stages of plant invasions

Vedder

Leidinger

Cabral

2020

Preprint

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“…In the belt, an invasive NNS was, on average, four times as abundant as a non-invasive NNS (with species abundance measured as the number of records). Several studies have already demonstrated the crucial role of propagule pressure, and especially the number of new immigrants, on the colonization success of NNS (Cassey et al, 2018;Alzate et al, 2020). The higher abundance of invasive NNS in the belts could thus result in a higher propagule pressure inside PAs, and a subsequent higher probability of establishment of invasive NNS in PAs.…”

Section: Factorsmentioning

confidence: 99%

Non-native Species Surrounding Protected Areas Influence the Community of Non-native Species Within Them

et al. 2021

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Protected areas (PAs) are a key element of global conservation strategies aiming to protect habitats and species from various threats such as non-natives species (NNS) with negative ecological impacts. Yet little is known about the mechanisms by which PAs are colonized by NNS, and more specifically the role of colonizing events from surrounding areas. Here, we compared terrestrial and freshwater non-native plants and animals recorded in Norwegian PAs and in 5-km belts around them, using the database of the Norwegian Biodiversity Information Centre Species Map Service. Our analysis included 1,602 NNS and 671 PAs. We found that NNS were recorded in only 23% of the PAs, despite the fact that 90% of the 5-km belts were colonized by at least one NNS. A Zero-inflated negative binomial regression model showed that the number of NNS in the 5-km belts was a strong explanatory variable of the NNS richness inside PAs. Other significant variables included the surface area of the PA, mean human population density in the PA, main type of habitat and accessibility of PAs. We also observed similarity in the species in and around the PAs, with, on average, two thirds of the NNS present in a specific PA also present in its 5-km belt. Furthermore, NNS were recorded in PAs on average 4.5 years after being recorded in the 0–5 km belts, suggesting a dynamic of rapid colonization from the belts to the PAs. Invasive NNS represented 12% of NNS in the belts but 40% in the PAs. This difference was related to the higher abundance of invasive NNS in the belts. Our results highlight the necessity of expanding the focus of NNS management in PAs beyond their boundaries, in particular to prevent incursions of NNS with high negative ecological impact.

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“…Under neutral expectations, endemic taxa that randomly increase in abundance are more likely to persist longer, and thus extant old residents as a whole should be more abundant than recent colonizers (Rosindell & Phillimore, 2011). However, immigration pressure and pre‐adaptation of colonizing species might counteract interspecific competition in the new environment (Alzate, Onstein, Etienne, & Bonte, 2020), and might have the potential to reverse neutral expectations on the abundance of endemics and colonizing taxa. Predator and parasite release of new colonizers or the concurrent introduction of new parasites to local specialists may also be alternative explanations for the apparent success of new colonizing over resident species (Ricklefs, 2010).…”

Section: Figurementioning

confidence: 99%

An “omics” approach to bridge community ecology and island biogeography

Matos‐Maraví

2020

Molecular Ecology

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The taxon cycle proposes a quasi-deterministic sequence of phases involving range expansion and population decline of insular taxa (Ricklefs & Bermingham, 2002;Wilson, 1961). The initial expansion phase is mediated by a generalist life strategy. Increased ecological distribution, the model predicts, facilitates increasing abundance and geographical range expansion. For example, nonflying insular taxa that are adapted to marginal habitats might penetrate coastal environments and are, thus, more likely to disperse across distant archipelagos (Gillespie et al., 2012). Taxa then become fragmented due to adaptation to the new local environments across islands, and, depending on ecological opportunity, they become more eco-morphologically specialized and potentially radiate into new species.However, in the view of the taxon cycle, the fate of most taxa is toward reduced dispersal ability, decline in abundances and, ultimately, extinction. Such a historical narrative of island community assembly posits the taxon cycle as a conceptual bridge between ecological community assembly and island biogeography (Figure 1). Most studies neglect the role of eco-evolutionary interactions in shaping biogeographical patterns. Darwell et al. (2020) build on their previous work focused on an endemic Fijian radiation of Pheidole ants (Figure 2). The authors use a dense data set of orthologous RAD sequencing loci (sequencing sample size of 927 individuals in 20 species) to infer patterns at the species and the population levels, as well collating an impressive number of two-and three-dimensional morphological measurements (53 morphometric landmarks from head and mesosoma in minor and major ant workers) to estimate Pheidole eco-morphological diversification. Altogether, Darwell et al. (2020), using highly efficient approaches to generate genomic and phenotypic data, comprehensively test several eco-evolutionary predictions made by E. O. Wilson, 60 years ago, on the nature of the taxon cycle in Melanesian ants. Their phylogenomic analysis reveals a single radiation of almost all extant Fijian endemics (16 out of 17 species). This finding is in line with island biogeography theory, which predicts that isolated large islands and archipelagos accumulate species diversity mainly by local diversification rather than by immigration from the mainland (MacArthur & Wilson, 1967; Valente et al., 2020). However, the eco-morphological quantifications allowed the authors to go one step further: the endemic Abstract Understanding the dynamics of communities in space and time requires reconciling ecological and evolutionary processes, including colonization, adaptation, speciation and extinction. In practice, this has been challenging because empirical data obtained by traditional methods and predictive models typically focus on particular processes driving local community assembly and biogeographical structure. In this issue of Molecular Ecology, by using phylogenomics, population genomics and phenomics approaches, Darwell et al. show that ant community ...

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The role of preadaptation, propagule pressure and competition in the colonization of new habitats

Cited by 27 publications

References 68 publications

Effects of species traits and abiotic factors during the stages of plant invasions

Effects of species traits and abiotic factors during the stages of plant invasions

Non-native Species Surrounding Protected Areas Influence the Community of Non-native Species Within Them

An “omics” approach to bridge community ecology and island biogeography

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