Some scientists convey suggested nosotros take away to protect one-half of Earth's surface to save most of its species. Influenza A virus subtype H5N1 novel Duke University-led study, however, cautions that it is the quality, non but the quantity, of what nosotros protect that matters.
"The predilection of national governments is to protect areas that are 'wild'—that is, typically remote, cold, or arid," Pimm said. "Unfortunately, those areas oft concur relatively few species. Our analysis shows that protecting fifty-fifty every bit much every bit one-half of the world's large wilderness areas volition non protect many to a greater extent than species than at present."
To protect every bit many at-risk species every bit possible, specially those amongst pocket-size ranges, governments should expand their conservation focus together with prioritize the protection of fundamental habitats exterior existing wildernesses, parks together with preserves, Pimm together with his coauthors from China together with Brazil say.
"If nosotros are to protect most species from extinction nosotros convey to protect the correct places—special places—not exactly to a greater extent than area, per se," said Binbin Li, assistant professor of environmental sciences at Duke Kunshan University inwards China.
Science Advances, uses geospatial analysis to map how good the world's electrical flow scheme of protected areas overlaps the ranges of nearly 20,000 species of mammals, birds together with amphibians, the species that scientists know best.
"We industrial plant life that global conservation efforts convey enhanced protection for many species—for example, nearly one-half the species of birds amongst the smallest geographical ranges at ane time convey at to the lowest degree utilisation of their ranges protected to a degree—but critical gaps silent exist," said Clinton Jenkins, of Brazil's Instituto de Pesquisas Ecológicas.
These gaps tumble out worldwide, including inwards biodiversity hotspots such every bit the northern Andes, the coastal forests of Brazil, together with southwestern China, together with they volition choke on to persist fifty-fifty if governments protect to upwardly to one-half of the world's remaining wild areas, the written report shows.
"Certainly, at that topographic point are adept reasons to protect large wild areas: they render environmental services," Pimm said. "An obvious event is the Amazon, where the loss of the woods at that topographic point powerfulness campaign massive changes to the climate. But to relieve every bit much biodiversity every bit possible, nosotros convey to position the species that stay poorly protected—which this newspaper does—and together with hence pinpoint where they are, hence nosotros tin upshot practical conservation."
Pimm, Jenkins together with Li Pb a nonprofit organization called SavingSpecies that partners amongst local conservation groups inwards South America, Asia together with other regions to protect such lands.
"The 'Half Earth' approach provides an inspiring vision to protect the world's species," Pimm said. "A preoccupation amongst concentrating on the amount expanse protected is misleading, however. It's quality, non quantity that matters."
Source: Duke University [August 29, 2018]
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