Tag: "biodiversity" at biology news
Tropical scientists find fewer species than expected
... issue of Nature. It is important to know how fast biodiversity
is being lost, but this is hard to gauge without a... bring some reality to predictions about declining biodiversity
in the sense that the consequences for insect herbivores of losing a particular host plant species m...
Biodiversity crucial to Earth's ecosystems
...g, most previous studies focused on the effects of biodiversity
in much simpler ecosystems. In this study, the researchers used a more complex system, involving a larger portion of the food web. On average, ponds have four main "trophic" levels: plants (such as algae), herbivores (such as zooplankton), carnivore...
Picky eaters rare among tropical insects
...f the journal Nature. Previous estimates of global biodiversity
may be as much as ten times too high because close...ather than species as the preferred unit to use in biodiversity
calculations and choose to multiply the numbers of insects collected per tree by the estimated total...
Study suggests global extinction crisis more serious than previously thought
...ation losses. Most analyses of the current loss of biodiversity
emphasize species extinctions and patterns of species decline, and do not convey the true extent of the depletion of humanitys natural capital, Ceballos and Ehrlich said. To measure that depletion, we need to analyze extinctions of both populations a...
Twelve new coral and fish species discovered off Madagascar
...ces. "Madagascar gets a lot of attention for its biodiversity
on land, but its marine habitats are equally preci...n Indian Ocean represent one of the 25 terrestrial biodiversity
hotspots, areas identified as Earth's richest but most threatened centers of plant and animal life....
Silvereye birds help scientists to settle disputed evolutionary theory
...ced ones, which don't tell you much about how real biodiversity
evolves. It's obvious that genetic changes can occur if a single pair of individuals founds a population, but the question is whether that really happens. Our results suggest that it doesn't." The scientists tested the founder effect model in an unus...
Wildmeat: Overhunting threatens species and people
...aving these species is critical to protecting both biodiversity
and people's food supplies. The question is how? "The richest areas for biodiversity
are those with the highest numbers of threatened species, and these areas also have high numbers of ...
Invading species have harder time cracking diverse plant communities
... of Minnesota has confirmed the connection between biodiversity
and resistance to ecological invasion in a prairie...ss of invaders." The findings imply that losses of biodiversity
could also mean loss of local resistance to invasion by species that, thanks to human transport, are...
Bacterial control of zebra mussels, low power radio
...organisms, examine biofilm communities and measure biodiversity
in the bay. Laboratory activities on the Eastern oyster are also offered, allowing students to learn first-hand about the biology, anatomy and habitat of this important member of the bay's ecology. Visit the site for web videos, teacher instruction...
Study offers a rare view of how species interactions evolve
...hapes biodiversity," he said. Efforts to conserve biodiversity
may also need to encompass large geographic scales. "If keeping players in the evolutionary game demands a geographic mosaic of coevolutionary hotspots and coldspots, then fragmentation of habitats will fundamentally change the way coevolution main...
African predator rediscovered in Tanzania
...in the Udzungwa Mountains, noted for its levels of biodiversity
and unique wildlife. "Compared to larger carnivores, the smaller species such as genets and mongooses are very poorly understood," added De Luca, "so one of our aims is to shed more light on this important and secretive group of animals." De Luca p...
Warmer world will be a sicker world, say scientists
...footed ferrets, among others. "Humandestruction of biodiversity
makes this a double whammy it means we areexacerbating the problem," says Dobson. Lines of Defense The authors acknowledge that response to their findings will becontroversial and politicized. "There are still people resistant to the ideaof clim...
Scientists get no-strings awards for biodiversity leadership
...anizing a cooperative among indigenous people in a biodiversity
hotspot in Ecuador, and operating a respected clearinghouse for biodiversity
advocacy and information. The five awards go to six people whose projects are in China, Ecuador, Mad...
Historic U.S.-Peru debt-for-nature swap
...ontaining some of the richest, yet most threatened biodiversity
on Earth, including rare pink river dolphins, jagu...nts, and nearly 1,800 bird species. Yet this rich biodiversity
faces a number of threats including the loss of habitat due to unsustainable logging (particularly o...
Sustainable Forestry Initiative Standard enhanced with new measures to protect biodiversity
...ly, and promote natural forest conservation in the biodiversity
hotspots and major wilderness areas. "For nearly a...ese new measures, designed specifically to address biodiversity
protection in commercial forest operations, companies seeking SFI certification in North America wil...
'Rock-paper-scissors' preserves biodiversity in bacterial neighborhoods
...t skirmishes that lack a clear victor but conserve biodiversity
of the overall ecosystem. But biodiversity
breaks down in the uniform environment of a well-mixed flask - demonstrating that spatial separation...
Guyana establishes its first conservation concession
...gh signed the TSA. "We want to preserve the area's biodiversity
and demonstrate to the world that conservation con...ate objectives include the long term protection of biodiversity
and the stimulation of economic development," he added. A conservation concession seeks to reconcile...
Sprawl may threaten wildlife in reserves
...iology. Globally, development is concentrated near biodiversity
hotspots. This is partly because private lands are more likely to have productive habitats such as lowlands and coastal and riparian areas, which generally have moderate climates, ample water and fertile soil. In contrast, reserves are more likely to...
Cambodian government creates 1,000,000-acre protected area
...people. It adds up to be great news for Cambodia's biodiversity
and the Cambodian people." Many of Cambodia's larg...n routes. The Cardamoms are part of the Indo-Burma biodiversity
hotspot, one of 25 global hotspots that represent only 1.4 percent of the Earth's landmass but are h...
Ecologist's book on introduced species' destructiveness
...wth and associated activities as a cost of loss of biodiversity
throughout the world," says Pimentel, a professor emeritus in Cornell's College of Agriculture and Life Sciences. "In the United States, invasions of non-native plants, animals and microbes are thought to be responsible for 42 percent of the decline ...
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