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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(Date:4/14/2014)... orphaned by HIV/AIDS in South Africa may provide insight ... behavior issues in other areas of the world, which ... that could lead to successful interventions. , A ... United Nations mentions that due to the HIV/AIDS pandemic, ... African, children are at an increased risk for mental ...
(Date:4/14/2014)... A new study shows that moderate to severe ... risk of stroke, cancer and death. , Results of ... to severe obstructive sleep apnea were four times more ... times more likely to have a stroke (HR = ... (HR = 3.4), and 2.5 times more likely to ...
(Date:4/14/2014)... Dallas study involving serious youth offenders, the answer to one ... seven years: "How long do you think you,ll live?", According ... offending over time., Author Dr. Alex Piquero said the study ... of them offend at very high rates and commit more ... much later in life offend much less., "In a lot ...
(Date:4/14/2014)... with symptoms increasing dramatically during some of the most important ... has found. , Depressive symptoms increased on average by 68 ... young men, who were around 25 years old when they ... their children. The results of the study were published April ... is the first to identify when young fathers are at ...
(Date:4/14/2014)... Lower weight babies and babies who aren,t breastfed ... risk of developing chronic inflammation and related health ... study. , "There were good reasons to hypothesize ... inflammation in adulthood," says Thomas McDade (Northwestern University), ... in the Child & Brain Development program. "It ...
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