Tag: "north" at biology news

USGS Scientists Find New Invasive Fish Species In Florida

...ecting aquatic plants from an artificial lake just north of Miami. By now, several dozen eels have been fo...n several ponds at the Chattahoochee Nature Center north of Atlanta, Ga., but USGS biologists are unaware of any possible links between the Georgia and Flori...

Summer Science: Where Have All The Honeybees Gone? UD 'Bee Guy' Asks Why--From America To The Amazon

...aron wondered, if killer beesmade their way as far north as Delaware? After a 12-hour airplane ride, Caron's journey began at the headwaters ofBolivia's Amazonian rivers. There, he deliberately antagonized killer bees byrattling a metal ball in front of them. Then he counted the number of stingmarks on his...

Research Shows How Shrimps Escape Predators

...Sweden, placed a set ofmesh enclosures in a stream north of Lund. Half the enclosures contained browntrout and half were empty. Dahl then counted amphipod shrimps, Gammarus pulex,that drifted downstream into the enclosures. He found that fewer of the amphipods migrated into the enclosurescontainin...

Forecasting The El Niño-Driven Ebb And Flow Of A Rogue Mosquito

...delsuggest that Aedes aegypti could survive as far north as the midwestern UnitedStates during the warmer months of the year. Hopp said it is important to note that while climate plays a role in theabundance and distribution of the mosquito, local public health and educationmeasures will play a crucial rol...

Duke Studies Show U.S. Central Plains Vulnerable To Global Warming

...g means that, even though it gets warmer as you go north tosouth, the overall balance of carbon uptake and release in the scars, and thescars' re-growth, is not dominated by the regional climate, but by the localprocesses. These processes include the growth of trees in these scars, whichencourage the re-gr...

Duke Studies Show That Environmental Effects Of Dams Extend To Insect Life

...widely distributed in the American tropics,ranging north as far as Texas, she said. However, the species Hamadryas februa is only known to lay its eggs onan inconspicous vine called Dalechampia scandens. This specificity made iteasier for her to study why these butterflies might be found on one isl...

Persistent Organic Pollutants, The Danger Is Not Over

...ves. Not more toxic pollutants in the north The general belief that toxic pollutants a...the contrary, levels are considerably lower in the north of Sweden than in southern regions. Furthermore, concentrations of for example PCBs, DDT a...

Birds Of A Feather: The Physics Of Flocks

... of which acts as if it is a tinybar magnet with a north and south pole. At room temperature, many of thes...e bird misjudges the situation andmoves 10 degrees north of east. If each bird has 4 neighbors, each neighborwill then make a 2.5 degree error in direction....

Possible Human Ancestors In Spain 780,000 Years Ago

...way. The field has switched back and forth between north and south many times in theEarth's 4.5-billion-year history. The last major switch from south to north,which scientists call the Matuyama/Brunhes reversal, took place about 780,000years ago. This reversal marks the boundary between the lower and mi...

Discovery Of New Large, Predatory Dinosaur Reported In Science

...ncestorevolved in the north. Spinosaurids from the north then colonized the Southerncontinent via a land bridge across the seaway. "This finding will add significant information to the idea that there wastraffic across the Tethys seaway during the Cretaceous Period," said Sereno. "Weare trying to understa...

New Forest Owners Prefer Enjoying Their Land Over Working It

... on their 2,500 acres of property in Union County, north ofGainesville. The 76-year-old farmer leases several acres to cattle ranchers, but slashpine can be found on most of his property. Trees are cut every two to threeyears and sold for several different uses, including paper production,lumber and plywo...

Fall Meeting: Updated Press Conference Schedule

...ones. The MGS team has exciting new results on the north polar cap and has received permission from Science Magazine to speak about it, even though Science will publish it one week later (i.e., embargo lifted at time of press conference). There is new infrared imagery resulting from three close encounters ...

Migratory songbird breeding linked to winter habitat

...the winter habitat affects not only when birds fly north to the breeding groundsbut what condition they're in upon arrival. Both are crucial factors in howwell the birds do on their summer breeding grounds," says Marra, who is nowPostdoctoral Fellow at the Smithsonian Migratory Bird Center in Washington, ...

Recycling Of Packaging Yields Environmental Gains

...onmentalterms to transport packaging from the very north to the south of Sweden. Producer responsibility was introduced in Sweden in 1994. This has led to anincrease in recycledpackaging by more than 140,000 tons in recent years. Even if packaging waste, assuch, is a minorenvironmental problem, the focus ...

Colorado State University Study Reveals Climate Change, Longer Growing Seasons Could Harm Grazing On Western Shortgrass Steppe

...ed-grass prairiesthat stretch from eastern Wyoming north into Canada. "If there is a cause-and-effect relationship between temperatureincreases and a decrease in blue grama, it could hold for the entire region,"Detling said. There isn't conclusive proof that temperature changes and a long...

Global Climate Change Model Predicts Changes In U.S. Ecosystems

...ertain desert species in the Southwest could shift north as far as eastern Washington. Fire could increase over large parts of the country because of widespread drought conditions. This could occur in the Great Lakes area and in the Southeast and Northwest forests. Vegetation growth could increase ov...

Future Of West Tied To Saving, Not Extracting, The Land

... in these eightstates (from Arizona and New Mexico north to Montana and Idaho) has increased 20percent, twice the national average. One telling example of change is Kremmling, Colo., a town of about 2,000 peoplean hour's drive from Steamboat Springs. For decades, its citizens saw industriessuch as sawmills...

Rare Cavefish Found By Scientists

...of Natural Resources on a spelunking expedition in north Georgia lastweek and found a rare, blind fish known as a southern cavefish. As teachers ofecology students and courses at the University of Georgia, both Gibbons andBuhlmann take every opportunity to acquaint themselves with the richbiodiversity of t...

Dyed In The Silkworm: Researchers Develop Novel Way To Produce Colored Silk

...er, neurobiology and plantgenetics. Located on the north shore of Long Island, 35 miles from Manhattan,the Laboratory was founded in 1890 as a field station for the study ofevolution. It has since developed into a world leader in cancer and molecularbiology research. Further information about the Laborator...

Urban Ecology Study Watches Birds On The Web

...e near Rolling Hills Golf Courseand Papago Park in north Tempe. On the other hand, someone whose heart is seton having a flock of imported Peach-faced Lovebirds visiting their feeder mightwant to live in far-east Mesa, in the vicinity of 104th St., where 72 of thesecolorful small exotic parrots (pets tha...

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