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28 mars 2017

The global avian invasions atlas, a database of alien bird distributions worldwide [Scientific Data]

Keywords : biogeography, invasive species, macroecology

The introduction of species to locations where they do not naturally occur (termed aliens) can have far-reaching and unpredictable environmental and economic consequences. Therefore there is a strong incentive to stem the tide of alien species introduction and spread. In order to identify broad patterns and processes of alien invasions, a spatially referenced, global dataset on the historical introductions and alien distributions of a complete taxonomic group is required. Here we present the Global Avian Invasions Atlas (GAVIA)—a new spatial and temporal dataset comprising 27,723 distribution records for 971 alien bird species introduced to 230 countries and administrative areas spanning the period 6000BCE—AD2014.(...)

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27 mars 2017

Will your paper be used in a meta-analysis ? Make the reach of your research broader and longer lasting [Methods in Ecology and Evolution]

1.Ecological and evolutionary research increasingly uses quantitative synthesis of primary research studies (meta-analysis) for answering fundamental questions, informing environmental policy and summarizing results for decision makers.
2.Knowing how meta-analysis works is important for researchers so that their research can have broader impact. Meta-analytic thinking encourages scientists to see single primary research studies as substantial contributions to a larger picture.(...)

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27 mars 2017

Genetic evidence challenges the native status of a threatened freshwater fish (Carassius carassius) in England [Ecology& Evolution]

A fundamental consideration for the conservation of a species is the extent of its native range, that is, regions naturally colonized. However, both natural processes and human-mediated introductions can drive species distribution shifts. Ruling out the human-mediated introduction of a species into a given region is vital for its conservation, but remains a significant challenge in most cases. The crucian carp Carassius carassius (L.) is a threatened freshwater fish thought to be native to much of Europe. However, its native status in England is based only on anecdotal evidence.(...)

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27 mars 2017

The highly threatened and little known Amazonian savannahs [Nature Ecology & Evolution - Comment]

The biodiversity of the Amazonian savannahs may be lost before it is known, unless scientists, conservationists and policymakers come together quickly to protect it.

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27 mars 2017

The multilayer nature of ecological networks [Nature Ecology & Evolution]

Keywords : ecological networks

Although networks provide a powerful approach to study a large variety of ecological systems, their formulation does not typically account for multiple interaction types, interactions that vary in space and time, and interconnected systems such as networks of networks. The emergent field of ‘multilayer networks’ provides a natural framework for extending analyses of ecological systems to include such multiple layers of complexity, as it specifically allows one to differentiate and model ‘intralayer’ and ‘interlayer’ connectivity. The framework provides a set of concepts and tools that can be adapted and applied to ecology, facilitating research on high-dimensional, heterogeneous systems in nature.(...)

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