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 ...
Ecology
May 26, 2023
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24
Like thieves that constantly look for ways to evade capture, Salmonella enterica, a disease-causing bacterium, uses various tactics to escape the human body's defense mechanisms. In a new study, researchers from the Department ...
Cell & Microbiology
May 26, 2023
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12
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.
Veterinary medicine
May 26, 2023
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113
West African fish exporter Ivory Coast on Thursday announced temporary bans on trawling for tuna and other species in a bid to protect dwindling stocks.
Ecology
May 25, 2023
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9
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 ...
Evolution
May 25, 2023
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5
Insects are in rapid decline. One study found the global total is falling by 2.5% a year, with insect species going extinct eight times faster than mammals, birds and reptiles.
Plants & Animals
May 25, 2023
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1
The most extensive study of the genetic relationships among orchids to date reveals that the flower's ability to grow on other plants evolved independently multiple times. A team of researchers, led by Penn State biologists, ...
Plants & Animals
May 25, 2023
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242
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 ...
Plants & Animals
May 25, 2023
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13
If a fishery manager could only know one thing about a fish species, it should be lifespan. But many species live out their lives on time scales much longer than we can observe. And even the short-lived species do a good ...
Plants & Animals
May 25, 2023
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3
Dolphins and porpoises are welcome features of Australia's coastline however little is known about the predation risk they face from sharks in their habitat.
Plants & Animals
May 25, 2023
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44
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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