Tag: "northeast" at biology news

Dartmouth biologists say algae might be missing mercury link in aquatic food chain

...hosen from their earlier 20-lake survey across the northeast examining metals in each part of the food chain....

Alaskan waters growing hospitable to sharks while seals and sea lions decline

...sharks and Pacific sleeper sharks, both sub-arctic northeast Pacific shark species, dont represent ecological invasions and they arent range extensions since both sharks are endemic, he says. He believes population changes are tied to the decades-long swings in climate caused by the Pacific Decadal Oscillation...

NSF grant to grow methane-producing microbes in lab

...n for the Cornell study is McLean Bog, a few miles northeast of Cornell's Ithaca campus, where sphagnum moss and other plant materials have been accumulating for some 13,000 years, ever since a massive chunk of glacier from the last great ice Age melted and left a kettle-like hole in the surrounding gravel. C...

Giant icebergs, unprecedented ice conditions threaten Antarctic penguin colonies

... March 2000 and gradually migrated west to a point northeast of McMurdo Sound, creating a barrier that altered wind and current patterns. Early this season, the sea ice extended roughly 128 kilometers (80 miles) north of McMurdo Station, the main U.S. research station in Antarctica, located on Ross Island. A...

Lowering rates of beach erosion: estuaries may be key

...onducted research at the Kennebec River estuary in northeast Maine to test their hypothesis that spring floods supplant tidal energy and deliver sediment to the coast. "We found that spring floods that are caused mostly by rain and melting snow provide enough energy to change the overall net direction of sand ...

University of Rhode Island fisheries oceanographers study the effects of predator-prey interactions in the Georges Bank fish community

...rom marine fish that have been collected along the northeast coast of North America. The results of the MSVPA agree with previous conclusions that predation is a dominant source of mortality in the Georges Bank fish community. Cod and silver hake were the most important predators, but have been replaced by...

Most eastern North American reserves too small

...n-Illinoian mammal province, which encompasses the northeast quadrant of the U.S. and adjacent slivers of Canada. If future development isolates other reserves in this mammal province, they could also lose species. To estimate the smallest size these reserves could be without losing species, Gurd and his coll...

Phased-out Bt corn variety dramatically cut growth rate of black swallowtail caterpillars

...ains Novartis event 176, in a 30-by-30 meter tract northeast of the UI campus in late May 2000. This variety of Bt corn is known to produce pollen with higher concentrations of the pesticide than other varieties and has been linked to a reduced survival of monarchs at concentrations naturally occurring in and ...

China to declare new reserve for Siberian tigers

...na and Russia, said, "There are few tigers left in northeast China, and most of those are animals dispersing fr...efore, the best opportunities to protect tigers in northeast China are along the Russian borders at known crossover points." "With no evidence of breeding femal...

Earliest human ancestors discovered in Ethiopia

...thiopia's Middle Awash study area, about 140 miles northeast of the capital, Addis Ababa. To the team of scientists, the discovery represents more evidence to confirm Darwin's conclusion that the earliest humans, or hominids, arose in Africa. Yohannes Haile-Selaissie, a paleontologist at the University of Cal...

Rutgers-led researchers discover new photosynthetic bacteria that appear to be significant component of ocean's carbon cycle

...ia at hydrothermal vents on the ocean floor in the northeast Pacific. "It was postulated that the light generated by the superheated water in thermal vents and chemical processes taking place around them would provide a good environment for the photosynthetic bacteria," says the researcher. "...

Isle Royale wolves fewer, but thriving

... that has carved out a territory for itself on the northeast side of the park and the other packs have respected its territory, said Peterson. There is also another mated pair and two single wolves wandering about the island and making do as best they can. He said all the wolves seen in the park this winte...

Worldwide transfer of microorganism facilitated by ballast water

...ld the Baltic Seas green crab is now ranging the northeast and west coasts of the U.S., aquatic plants such as phragmites, water milfoil and hydrilla are taking over many near shore areas, the rapa whelk from the Sea of Japan is in the lower Chesapeake, the comb jelly from the Chesapeake arrived in the Black...

Wisconsin lake study shows persistence of acid rain effects

...s acid rain levels slowly begin to improve. In the northeast U.S., where lakes were most vulnerable to acid rai...ges driven by acidity. Frost says other studies of northeast U.S. lakes have found little improvement in pH levels. The study also demonstrated that what was int...

Best bet for saving cave species

...n in a single cave. Hotspots of diversity include northeast Alabama for terrestrial cave species and the Edwards Plateau of Texas for aquatic cave species. While the fact that cave species are concentrated in hotspots will help make it easier to save them, protecting the caves themselves is not enough. ...

Road dust: Rural vehicles emit more pollutants than urban ones

...n Madison County, Illinois, approximately 30 miles northeast of St. Louis. Periodically, from January to April 1998, the team painstakingly counted and classified vehicles at both sites over six- to eight-hour time spans, taking five-minute readings every 15 minutes while they collected the particulate matter ...

Millenium bug found by CSIRO scientists

...de in mountain streams of southeast Queensland and northeast NSW, this true bug is presently known to exist at only eight localities in that region. At about two millimetres in length, it lives on the surface of the water in quiet areas of freshwater streams. "The "Millennium Bug" is a 'waiting' predator/scav...

Astrobiologist to hunt small game in Siberia

...ample is in the Arctic National Wildlife Refuge in northeast Alaska. U.S.Fish and Wildlife Service. More information on ice wedges, polygons, and pingos, including an animationshowing how they grow, is at the Fish & Wildlife Service site on the ArcticNational Wildlife Refuge. "The microorganisms found in the ...

Presence of a fertile female in the next nest can lead a bird astray, UB research finds

...hroated blue warblers, a bird speciescommon in the northeast U.S., have a reputation for practicing monogamy andsharing in the raising of their young. However, the mere presence of a fertile female in the nest next door can beenough to cause a male to stray, leaving his female mate unguarded, according toa pa...

NCAR scientists seek clues to wildfires during Alaska prescribed burn

...erve the burn on 2,000 acresapproximately 25 miles northeast of Fairbanks, Alaska. As of July 7, thechance of initiating the burn on July 8 is very likely at 75%probability. The U.S. Department of Agriculture's Forest Service issponsoring the experiment, called Frostfire. NCAR's primary sponsor isthe National ...

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