Related topics: climate change · extinction · plants · biodiversity · plos one

More efforts are needed to protect orchids in karst forests

Karst forests develop in a karst landform, and have complex vegetation types and high biodiversity, and are rich in endemic species. As one of the important and special plant groups in the karst habitat, many orchids have ...

Bird flu fells nearly 9,000 marine creatures in Chile

Nearly 9,000 sea lions, penguins, otters and small cetaceans have died in an avian flu outbreak battering Chile's north coast, the South American country's fisheries service said Thursday.

River erosion can shape fish evolution, study suggests

If we could rewind the tape of species evolution around the world and play it forward over hundreds of millions of years to the present day, we would see biodiversity clustering around regions of tectonic turmoil. Tectonically ...

Beetles in a bottle: A message from aliens to schools

While invasive alien species (IAS) represent a growing threat to global biodiversity and ecosystems, public awareness of them hasn't seen a significant increase. Many researchers believe informing people about IAS is an essential ...

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Species

In biology, a species is:

There are many definitions of what kind of unit a species is (or should be). A common definition is that of a group of organisms capable of interbreeding and producing fertile offspring, and separated from other such groups with which interbreeding does not (normally) happen. Other definitions may focus on similarity of DNA or morphology. Some species are further subdivided into subspecies, and here also there is no close agreement on the criteria to be used.

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