Posts Tagged 'biodiversity'

DNA in Flesh-Eating Flies’ Guts Reveal Biodiversity

Credit: Saguaro juniper

When blowflies and flesh flies settle on dead animals, they aren’t just feasting on the carrion, they are in fact sampling their DNA. Scientists have demonstrated that this DNA persists long enough to be sequenced, allowing them to gain a quick and cost-effective snapshot of mammal diversity in otherwise inaccessible rainforest environments.

Read more @ SciTechDaily

At Least a Third of All Marine Species are Still Unknown

ocean-species-marine

The most comprehensive assessment of ocean life has revealed that one third to two thirds of all species are still unknown to science.

Read more @ SciTechDaily

Projections of Urban Growth Highlight at Risk Areas

urban-expansion-sprawl

Forecasts of different regions’ likelihood of urban expansion could be used to direct conservation efforts

Researchers are trying to make detailed predictions about how urban areas are likely to grow in order to forecast how the next few decades of urbanization will affect biodiversity.

Read more @ SciTechDaily

Survey of Brazil’s Atlantic Forests Reveals Loss of Key Species

white-lipped-peccary

The white-lipped peccary is no longer found in the Brazilian Atlantic forest.

According to a new survey of Brazil’s Atlantic forests, mammal extinctions are occurring at least twice as fast as previous estimates suggested. Jaguars, lowland tapirs, woolly spider-monkeys, and giant anteaters are almost absent from Brazil’s northeastern forests, which are among the most ancient and threatened tropical ecosystems on Earth.

Read more @ SciTechDaily

Biodiversity on Earth Increases with Global Warming

biodiversity-tropical-climate

It would seem logical that periods of global warming in Earth’s history started the extinction pulses that defined the geological record. However, that’s not the case as a report that was published this week proves. The warming of Earth is accompanied by an increased biodiversity. That doesn’t mean that the mass extinction pulses won’t take place.

Read more @ SciTechDaily

A Fifth of All Invertebrates on Earth Threatened by Extinction

Nudibranch sea slugs

One in five of Earth’s invertebrate species are currently threatened with extinction. These creatures represent 99% of the biodiversity on Earth. Until now, scientists haven’t attempted a comprehensive review of the conservation status of this many species. Less than 1% of invertebrates had been assessed by the International Union for Conservation of Nature (IUCN).

Read more @ SciTechDaily

Pacific Islanders Weapons Indicate that Three Shark Species Disappeared

Carcharhinus-obscurus-spottail-shark

The analysis of the weapons used by the indigenous people of the Gilbert Islands in the central Pacific Ocean, which primarily use shark teeth, indicate that at least three species of shark have disappeared from the waters near the islands. Joshua Drew, a conservation biologist at Columbia University in New York, studied the weapons housed in the collection of the Field Museum of Natural History in Chicago, Illinois, and presented his findings at the 2012 Ecological Society of America’s Annual Meeting in Portland last week.

Read more @ SciTechDaily


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