Functional and taxonomic perspectives for understanding the underlying mechanisms of native and alien plant distributions

Okimura, Tokiyo; Mori, Akira

doi:10.1007/s10531-018-1503-4

Cited by 13 publications

(6 citation statements)

References 72 publications

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“…Disentangling the functional trait diversity of native and invasive species Overall, our results indicate that dominant invasive species are more diverse than native species across communities and in four out of the eight communities, which indicates that many resource-use profiles might allow species to invade communities (Tecco et al 2010;de la Riva et al 2019). That is, contrasting with previous findings (Okimura and Mori 2018), we show that invasive species constitute a functionally diverse pool which contributes to a great proportion of the community trait diversity. As discussed by Loiola et al (2018), this may reflect that invasive species are creating new functional spaces outside the extant native pool, i.e.…”

Section: Figcontrasting

confidence: 99%

“…However, the sources and extent of intraspecific trait variance might differ between native and invasive species within the same community. It has been argued that, whereas native species occupy specific suitable patches within their range (Gallien et al 2010), invasive plants are often generalist species (Okimura and Mori 2018), able to thrive under diverse ecological constraints (Clavel et al 2011), and may show greater plasticity than phylogenetically related non-invasive species (Sultan 2001;Funk 2008;Davidson et al 2011;Martín-Forés et al 2017). Thus, we might expect that, in a given community, the contribution of intraspecific variance to total trait diversity will be greater in invasive than native species.…”

Section: Introductionmentioning

confidence: 99%

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Functional segregation of resource-use strategies of native and invasive plants across Mediterranean biome communities

et al. 2020

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Functional segregation among species in a community depends on their mean trait values (i.e. functional distinctiveness), and the range of trait attributes exhibited by each species (i.e. functional diversity). Previous evidence suggests that invasive plants tend to display traits related to a more acquisitive resource-use strategy than natives. However, the contribution of intraspecific trait variation to functional diversity has received little attention in community ecology, and might provide interesting information about community processes. In this study, we used eight plant traits related to carbon and nutrient acquisition of coexisting dominant native and invasive plants in eight communities across the Mediterranean-climate biome to determine sources of functional segregation between native and invasive species. We found three major axes of functional variation, related to leaf economics, resource-use efficiency, and plant height. Invasive species across communities had leaf traits related to an acquisitive resource-use strategy in contrast to native species, whereas differences in the second and third principal components were community dependent. Invasive species were more functionally 2 diverse than native species across the dataset and in four out of the eight communities. Intraspecific variance accounted for 11-27% of total trait variation and was on average greater in invasive species, and especially important in the axis related to resource use efficiency. These results, although dependent on the trait and community considered, offer interesting insights to the sources of functional trait diversity of native and invasive species within communities, indicating that intraspecific variation might not be equally distributed between native and invasive species.

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Section: Figcontrasting

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Functional segregation of resource-use strategies of native and invasive plants across Mediterranean biome communities

et al. 2020

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“…With the development of roads, residential areas, farmlands, and plantations, the reformation of habitat conditions has facilitated the introduction and spread of non-native species such as Festuca arundinacea, L. multiflorum, E. annuus, and S. altissima [71]. Since approximately 40% of non-native species in Japan belong to the Compositae and Gramineae families, these non-native species usually have similar traits as generalists, as reflected by a lower proportion of perennial species, faster growth rate, and longer dispersal distance than done by native species [71,72]. On the other hand, the convergence of functional traits was likely associated with the extirpation of specialist species.…”

Section: Floristic Homogenization With Degradation Levelsmentioning

confidence: 99%

Effect of Anthropogenic Disturbance on Floristic Homogenization in the Floodplain Landscape: Insights from the Taxonomic and Functional Perspectives

Cao

Natuhara

2020

Forests

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Anthropogenic disturbances pose significant threats to biodiversity. However, limited information has been acquired regarding the degree of impact human disturbance has on the β-diversity of plant assemblages, especially in threatened ecosystems (e.g., floodplains). In the present study, the effects of anthropogenic disturbance on plant communities of floodplain areas (the Miya River, Mie Prefecture, Japan) were analyzed. The taxonomic and functional β-diversity among different degradation levels were compared, and the differences were assessed by tests for homogeneity in multivariate dispersions. In addition, the effects of non-native species and environmental factors on β-diversity were analyzed. As revealed from the results, anthropogenic disturbance led to taxonomic homogenization at a regional scale. The increase in non-native invasions tended to improve homogenization, whereas at a low degradation level, the occurrence of non-natives species was usually related to taxonomic differentiation. Furthermore, though the increase in non-natives and environmental parameters significantly affected the β-diversity of the floodplain area, environmental factors may be of more crucial importance than biotic interactions in shaping species assemblages in this study. The previously mentioned result is likely to be dependent on the research scale and the extent to which floodplains are disturbed. Given the significant importance of floodplains, the significance of looking at floodplains in the different levels of degradation was highlighted, and both invasion of non-native species and environmental factors should be considered to gain insights into the response of ecosystems to anthropogenic disturbance. The findings of this study suggested that conservation programs in floodplain areas should place more emphasis on the preservation of natural processes and forest resources.

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“…An increase in the extent and abundance of non-native plants can result in decreased trophic diversity, even if local native diversity is maintained (Vellend et al 2013;Dornelas et al 2014). By contrast, other authors have noted that non-native plants tend to support higher invertebrate taxonomic diversity than native plants, whereas native assemblages have more specialist species, resulting in higher diversity (Okimura and Mori 2018). Hence, maintaining trophic diversity is key to preserve the link between biodiversity and ecosystem functioning (Isbell et al 2011;Veen et al 2018).…”

Section: Trophic and Taxonomic Groupsmentioning

confidence: 99%

Biogeographical comparison of terrestrial invertebrates and trophic feeding guilds in the native and invasive ranges of Carpobrotus edulis

Rodríguez¹,

Novoa²,

Cordero‐Rivera³

et al. 2020

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Plant invasions impact on biodiversity by altering the composition of native communities by disrupting taxonomic and functional diversity. Non-native plants are often released from their natural enemies, which might result in a reduction of the attack of primary consumers. However, they can also be exposed to the attack of new herbivores that they might not be able to tolerate. Hence, invertebrate communities can be influenced by invasive non-native plants, which in turn modify interactions and change environmental conditions. In this study, we examined the compositional and trophic diversity of invertebrate species, comparing ecosystems with and without the plant species Carpobrotus edulis in coastal areas in its native (South Africa) and introduced (Iberian Peninsula) ranges. Results show that C. edulis has a clear impact on invertebrate communities in its non-native range, reducing their abundance in invaded areas, and particularly affecting certain trophic groups. Invasive C. edulis also alters the invertebrate diversity by not only reducing abundance but also by altering species composition. Overall, the physical dominance of C. edulis modifies the co-occurrence of invertebrate assemblages, reducing the number of trophic groups and leading to substantial effects on primary consumers. Results suggest that the lack of natural enemies might be an important driver of the expansion of C. edulis in its introduced range. Further work is needed to examine long-term changes caused by non-native plants on invertebrate assemblages and the subsequent modification of biological interactions.

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Functional and taxonomic perspectives for understanding the underlying mechanisms of native and alien plant distributions

Cited by 13 publications

References 72 publications

Functional segregation of resource-use strategies of native and invasive plants across Mediterranean biome communities

Functional segregation of resource-use strategies of native and invasive plants across Mediterranean biome communities

Effect of Anthropogenic Disturbance on Floristic Homogenization in the Floodplain Landscape: Insights from the Taxonomic and Functional Perspectives

Biogeographical comparison of terrestrial invertebrates and trophic feeding guilds in the native and invasive ranges of Carpobrotus edulis

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