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doi:10.1111/ele.2006.9.issue-8

Cited by 6 publications

(3 citation statements)

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“…Invasional meltdown is the mutual facilitation of invasion by different species (Simberloff & Von Holle 1999). Albeit not a new hypothesis, it still remains controversial (Simberloff 2006) and very few examples of it are known from fish communities (e.g. the opposite effect found in Britton et al 2010).…”

Section: Discussionmentioning

confidence: 99%

A regional fish inventory of inland waters in Northern Italy reveals the presence of fully exotic fish communities

Lanzoni

Milardi

Aschonitis

et al. 2018

The European Zoological Journal

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The aim of the study is to present a complete and updated fish inventory of inland waters of the Emilia-Romagna region, Northern Italy, and to highlight the presence of fully exotic fish communities. Overall, based on 208 sampling locations, the observed fish fauna consisted of 45 species, 22 native and 23 exotics. A significant element of the inventory is the identification of xenodiversity hotspots (spatially clustered sites, one lowland and one upland region), where a complete substitution of native species by exotic species was observed (in total seven sites in the lowland and two sites in the upland with no native species presence). These xenodiversity hotspots were found to host specific combinations of exotic species, which may be able to constitute balanced exotic communities. The hotspots of the lowland region are located in the northeast lowland part of the territory, hosting exotic species combinations mainly composed by wels catfish (Silurus glanis Linnaeus, 1758, a large predator), common carp (Cyprinus carpio Linnaeus, 1758, a large benthivore), crucian carp (Carassius spp., a small-bodied generalist) and other less dominant exotic species. The hotspots in the upland region were located in the southwest part of the territory and were dominated by only one exotic species (rainbow trout, Oncorhynchus mykiss (Walbaum, 1792)). A difference between these xenodiversity hotspots is that in the lowland the introductions were mostly unintentional and are not continued, while in the upland the introduction of rainbow trout is intentional and currently carried out by local fishermen.

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Section: Discussionmentioning

confidence: 99%

A regional fish inventory of inland waters in Northern Italy reveals the presence of fully exotic fish communities

Lanzoni

Milardi

Aschonitis

et al. 2018

The European Zoological Journal

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“…While population size and their spatial distribution will also influence the intraspecific genetic structure, in plants, the reproductive system is arguably the most important factor (Loveless and Hamrick 1984;Holsinger 2000). This has important evolutionary consequences (Morjan and Rieseberg 2004;Eckert et al 2010;Schiffers et al 2014; Barrett and Harder 2017), particularly in highly fragmented habitats (Young, Boyle, and Brown 1996;Aguilar et al 2006). Habitat fragmentation is especially likely for plants from freshwater environments, such as rivers and lakes.…”

Section: Introductionmentioning

confidence: 99%

Contrasting phylogeographic structures between freshwater lycopods and angiosperms in the British Isles

et al. 2018

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Aquatic plants face many novel challenges compared to their terrestrial counterparts. The habitat they occupy is typically highly fragmented, with isolated water bodies surrounded by swathes of "dry desert". This can result in reduced gene flow, inbreeding, and potentially local extinction. The level of gene flow and degree of genetic structure in these species is also likely to be influenced by the mating system they adopt. To test this hypothesis we compare the phylogeographic structure of two freshwater plants in the British Isles, the largely clonal angiosperm Littorella uniflora, and the heterosporous lycopod Isoetes lacustris. We sampled both plants from lakes where they co-occur, and used restriction site-associated DNA sequencing (RAD-Seq) to infer their relationships. Genetic structure among lakes is higher in the angiosperm, which we associate with reduced sexual reproduction, and hence lower levels of gene flow between lakes. Furthermore, we found evidence of lineage-specific association to certain lake nutrient types in L. uniflora, which might result from environmental filtering of specific ecotypes. Overall, we conclude that the reproductive system of lycopods, which is less specialized to terrestrial conditions, provides an advantage following the secondary colonization of aquatic habitats by enabling frequent genetic exchanges between populations and potentially facilitating faster adaptation.

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“…Plant traits involved in allowing invasive species to become successful invaders remains a challenging question in invasion ecology (van Kleunen, Weberm, & Fischer, 2010). Previous studies together with exhaustive meta-analysis (Davidson, Jennions, & Nicotra, 2011;Pigliucci & Preston, 2004;Richards, Bossdorf, Muth, Gurevitch, & Pigliucci, 2006) emphasized how a high phenotypic plasticity in some particular functional traits can be considered as a potential factor in promoting invasion success since helps these species to express advantageous phenotypes over a broad range of environments (Matesanz, Gianoli, & Valladares, 2010). Actually, according to the original definition by Bradshaw (1965) phenotypic plasticity can be explained as the change in phenotypic expression of a genotype in response to environmental factors.…”

Section: Introductionmentioning

confidence: 99%

Phenotypic plasticity of two invasive alien plant species inside a deciduous forest in a strict nature reserve in Italy

Granata

Bracco

Catoni

2019

Journal of Sustainable Forestry

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Untitled

Cited by 6 publications

References 0 publications

A regional fish inventory of inland waters in Northern Italy reveals the presence of fully exotic fish communities

A regional fish inventory of inland waters in Northern Italy reveals the presence of fully exotic fish communities

Contrasting phylogeographic structures between freshwater lycopods and angiosperms in the British Isles

Phenotypic plasticity of two invasive alien plant species inside a deciduous forest in a strict nature reserve in Italy

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