Tag: "threatened" at biology news

Duke Ecologist Says Logging Is Creating 'Mahogany Deserts'

...es as "aspecies which although not necessarily now threatened with extinction maybecome so unless trade in specimens of such species is subject to strictregulation..." Such a listing would not restrict trade, but would require that mahoganiesbe monitored and that producing nations define sustainable harvesting...

Scientists Discover Smallest Frog

...cal forests in Cuba are even more fragile and more threatened than those in the Amazon of South America because they are so small, less than 10 percent of the island's land area," says Hedges. "They are now being cut down at an increasing rate, mainly for subsistence farming and cooking fuel. We still have an...

Beset By Human Competition, Penguins Must Take Marathon Food Trips To Avoid Starvation, A Researcher Finds

... real world, the penguin's very existence is being threatened by fishing fleets and oil tankers. Starvation is a major cause of death for newly hatched penguins, the result of dwindling marine food reserves. To feed their families, adult birds are forced to forage great distances from their breeding colonies, s...

First Planned Release Of Captive Lemurs In Madagascar Wilds Expected In Fall

...rnment of Madagascar in preservinglemurs and other threatened species through well managed breeding programs. Those programs are underway in distant places like the Duke Primate Centerand other MFG institutions, as well as in Madagascar's own two zoos: TsimbazazaBotanical and Zoological Park and Ivoloina Zoolo...

Captive Lemurs To Depart For Madagascar Oct. 17 For First Release Into The Wild

...nment of Madagascar in preserving lemurs and other threatened species through well-managedbreeding programs. Those programs are underway in distant places like the Duke Primate Center and other MFG institutions, as well as inMadagascar's own two zoos: Tsimbazaza Botanical and Zoological Park and Ivoloina Zoolo...

New Mathematical Model Could Help Predict Health Of Offshore Areas Where Rivers Enter The Sea

...andnumerous disasters, many of them man-made, have threatened these waters. A new mathematical model, coupling both physical and biological effects,could be acrucial step in predicting the health of near-shore ocean environments whererivers enter the sea.The model, which shows the dramatic importance of wi...

Scientists Work To Restore Native Fish And Habitat To Great Lakes

... and time." Coastal development and pollution have threatened the ecological health of Great Lakes wetlands and nearshore habitats. Yet, there is great potential to protect existing habitats and restore degraded habitats during wetlands rehabilitation and waterfront re-development activities. Once considered ...

UF Researchers: Development Promotes Disease Among Gopher Tortoises

...LLE ---Urban development in Florida is forcing the threatened gopher tortoise into closer and closer quarters, increasing the likelihood of them spreading a disease that could help speed their demise, according to new findings by University of Florida researchers. Mary Brown, a UF associate professor of...

Prairies Will Be Hit Hard By Global Warming

...easonal rainfalls. Their migration and breeding is threatened bya drier climate. Malcolm and Adam Markham of World Wildlife International havejust completed a year-long study on the effects of North American global warmingby comparing computer models of the earth's atmosphere and ecosystems withfuture scenario...

Coastal Development Threatens Rare Atlantic Shorebird

...einterior and the California least terns. Both are threatened due to habitatloss. Schweitzer and graduate student Michael Krogh, who monitored theAtlantic least terns in 1995, ?96 and ?97, are encouraged by the reproductivesuccess of the roof-top colonies. Seventy-two chicks in 1996 and 114 in 1997fled...

Despite Odds, Little Known Grauer's Gorillas Persist In Central Africa

... groupfound that poaching and habitat loss gravely threatened gorilla numbers. Several localpopulations documented by Schaller had vanished. Hall and others argue that continued support for the Congolese park service is essential duringthese troubled times. "Our data show parks have made a difference. Even in a...

Invasive Weeds Pose Major Threat To American Landscape

...documenting that 1 in 8 plant species is globally threatened with extinction. Invasive plants are those th...s-- about two-thirds of all endangered species are threatened by non-nativespecies, the report said. As the native plant species decline, the animals thatdepend o...

Edible Lily Plant Yields A Natural Pesticide

...rtant vegetables grown in Hokkaido,Japan, is often threatened by a a fungus that develops lesions in the bulbs. But the stress caused by the attack of the plant pathogen triggers a series ofchemical reactions that causes the plant to make some natural pesticides,according to a research group led by Kenji Monde ...

Sturgeon, Trout And Telemetry--USGS Research Mixes Science And Technology At American Fisheries Society Annual Meeting

...dd the anadromous Atlantic sturgeon to the federal threatened species list has prompted USGS scientists to devel...dicate that the Neosho madtoms, a federally-listed threatened fish species since 1990, are decreasing in two of their three Midwestern river habitats -- the Neosh...

Lake George Water Is Death On Zebra Mussel Larvae

...Native clams, including a species considered to be threatened in the U.S.,thrive in the lake. The zebra mussel research at Rensselaer is supported by The Fund for LakeGeorge, The Helen V. Froehlich Foundation, and a New York State Sea Grant. The DFWI research has included the development of a genetic DNA probe ...

Mouse Study Trumpets New Way To Preserve Species

...genetic resources from those species that are most threatened by extinction." Critser is president and director of the Biodiversity Research Institute, anot-for-profit research organization made up of universities and zoos worldwide to establish a network of researchers interested in collecting and preserv...

New Research Shows Loggerhead Sea Turtles Sustain Delicate Dunes

... The results of the research shows eggs laid by threatened loggerheadsalong Melbourne Beach hold essential nutrients that may strengthenvegetation along the shore and could be preserving the dune system. Sarah Bouchard, a UF student who studied the nesting turtles for hermaster's thesis, monitored th...

Greater Prairie Chicken Appears On Comeback Trail In Illinois

... chickens benefit a widearray of other endangered, threatened and watch-list species in the state." The prairie chickens' recovery, Brawn said, may be temporary, and it may benecessary to bring in more birds in several years to revitalize the population'sdiversity. A good sign, he added, is that the Illinois D...

University Of Georgia Awarded $2.5 Million Grant For Drug Discovery And Biodiversity Among The Maya Of Mexico

... plants projects, since thisknowledge is seriously threatened due rapid cultural change." The complex ecosystem of the Highland Maya is the world's third richestin numbers of vascular plant species due to the diverse habitats found in theregion, from mountains to deep valleys, leading to a wide varie...

Alien Species Cost U.S. $123 Billion A Year

...the U.S. Department of theInterior's endangered or threatened species lists are at risk primarily becauseof non-indigenous species. Pimentel, who presented his findings today (Jan. 24, 1999) at the annualmeeting of the American Association for the Advancement of Science (AAAS) inAnaheim, Calif., noted, however...

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