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Human impact is changing the way biodiversity is organized

Zoogeographical regions, or zooregions, are areas of the Earth defined by species pools that reflect ecological, historical and evolutionary processes acting over millions of years. Consequently, researchers have assumed that zooregions are robust and unlikely to change on a human timescale. However, the increasing number of human mediated introductions and extinctions can challenge this assumption. By delineating zooregions with a network?based algorithm, this study, focused on the bioregions defined by amphibians, mammals, and birds, shows that introductions and extinctions are altering the zooregions known today. Introductions are homogenising the Eurasian and African mammal zooregions and also triggering less intuitive effects in birds and amphibians, such as dividing and redefining zooregions representing the Old and New World. Furthermore, these Old and New World amphibian zooregions are no longer detected when considering introductions plus extinctions of the most threatened species. Unfortunately, these changes can be increased if the currently threatened species become extinct. Results suggest that the human being is altering historical, ecological, and evolutionary signals that informed us of the processes that have shaped life on Earth. These findings highlight the profound and far?reaching impact of human activity and call for identifying and protecting the uniqueness of biotic assemblages. informacion[at]ebd.csic.es: Bernardo-Madrid et al (2019) Human activity is altering the world's zoogeographical regions. Ecol Lett https://doi.org/10.1111/ele.13321


https://onlinelibrary.wiley.com/doi/full/10.1111/ele.13321
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Content with tag threatened species .

Human impact is changing the way biodiversity is organized

Zoogeographical regions, or zooregions, are areas of the Earth defined by species pools that reflect ecological, historical and evolutionary processes acting over millions of years. Consequently,...

The six most important threats for petrels and shearwaters

Shearwaters and petrels are highly adapted seabirds that occur across all the world’s oceans. Petrels are a threatened seabird group comprising 120 species. They have bet-hedging life histories...

Cities may save some threatened species but not their ecological functions

Urbanization is one of the main causes of biodiversity loss worldwide. Wildlife responses to urbanization, however, are greatly variable and, paradoxically, some threatened species may achieve much...

The spatial distribution of an insular cliff-nesting raptor community

The specific spatial distribution and habitat association are major issues in ecology and conservation. Nesting sites of five cliff-nesting raptors (Egyptian vulture [a locally extinct species],...