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Southwest in Biological News

Models simulate nitrate dynamics in Garonne, Southwest France

MADISON, WI, DECEMBER 29, 2008 The over-enrichment of fresh, transitional, and marine waters with nitrogen (N) can lead to problems associated with eutrophication, such as a change in species composition of aquatic plants and nuisance algal blooms. In this context, dynamic models of flow and wate...

Y chromosome study sheds light on Athapaskan migration to southwest US

A large-scale genetic study of native North Americans offers new insights into the migration of a small group of Athapaskan natives from their subarctic home in northwest North America to the southwestern United States. The migration, which left no known archaeological trace, is believed to have o...

New hybrid plants could prompt more prodigious pepper production in Southwest

UVALDE By themselves or as an ingredient in a variety of foods, including salsa, America's top-selling condiment, peppers have found a warm spot in the hearts and stomachs of U.S. consumers. But while U.S. Department of Agriculture figures show consumption of fresh peppers at an all-time high...

August 2009 Geology and GSA Today media highlights

...pes from carbonate-associated sulfate and pyrite within a well-preserved, 10 million year limestone sequence from the Precambrian-Cambrian boundary in southwest Namibia. Surprisingly, this 10 million year sequence of limestones contains sulfur isotopes in pyrite that are consistently heavier than the sulfur is...

Noise pollution negatively affects woodland bird communities, says CU-Boulder study

... which are known to prey on eggs and young of songbirds, play a key role in southwest woodland ecology, said Francis. They were shown to be 32 percent more comm...jays frequently carry, eat and cache pine nuts and disperse them throughout southwest woodland areas, a decrease in scrub jays in such areas could result in the ...

NOAA bans commercial harvesting of krill

...y source of nutrition in the marine food web. "Krill are the foundation for a healthy marine ecosystem," said Mark Helvey, NOAA's Fisheries Service southwest Assistant Regional Administrator for Sustainable Fisheries. "Protecting this vital food resource will help protect and maintain marine resources and p...

Genetic factors implicated in survival gap for breast, ovarian or prostate cancer

...rnal of the National Cancer Institute (JNCI). The study analyzed patient records from clinical trials going back as far as 1974 conducted by the southwest Oncology Group (SWOG). The investigators conducted an analysis that controlled for comparable treatment, disparities in tumor prognosis, demographics,...

NSF provides $3.4 million to study climatically important Agulhas Current

... for Agulhas Current transport, which can be extended forwards and backwards in time. The ACT mooring array will be positioned offshore and to the southwest of East London, South Africa, in up to 4700 m of water. The array will consist of seven full-depth current meter moorings, spanning the mean width of ...

First riser-drilling research operations undertaken

...ath the ocean floor and in seismogenic (earthquake-producing) zones that have never been reached before. The Nankai Trough subduction zone, located southwest of Japan, is one of the most active earthquake zones on the planet, with complex geological formations caused by tectonic plate thrusts. The scheduled...

NOAA researchers: Blue whales re-establishing former migration patterns

...rcial whaling in 1965. In the scientific journal Marine Mammal Science , researchers from Cascadia Research Collective in Washington state, NOAA's southwest Fisheries Science Center in California, and Canada's Department of Fisheries and Oceans identified 15 separate cases where blue whales were seen off B...

Breast health center gives TGen new research opportunities

...e, head of TGen's Breast & Ovarian Cancer Research Unit. The new center is located in John C. Lincoln's Medical Offices 3, 19646 N. 27th Ave., just southwest of Interstate 17 and Loop 101, in northwest Phoenix. "Our new state-of-the-art medical equipment allows the earliest possible detection of breast c...

New Southern California beetle killing oaks

...localities where it was previously collected in Arizona, Guatemala, and Mexico," said Steve Seybold, an entomologist with the Forest Service's Pacific southwest Research Station and one of the study's authors. "We suspect it was either recently brought to California or somehow expanded its range." There are...

Origins of wolverine in California genetically verified

...is animal came to the Tahoe National Forest," said Bill Zielinski, one of the study's authors and a research ecologist at the Forest Service's Pacific southwest Research Station. "But, this peer-reviewed study shows that other scientists agreed with our interpretation that it likely traveled here from the Rock...

Laughing hyenas, wailing levees, the sound of cheese and blaring bagpipes

... WHALE The North Atlantic right whale, with only about 300-350 animals known to exist, used to inhabit the Cape Farewell Ground, which lies between southwest Iceland and Greenland. In the 1800s they were heavily hunted in this area and haven't been seen much there since. Recently acoustic sensors stationed ...

North America works to halt invasive species

...d States alone. An example of this is the zebra mussel, which has caused nearly $1 billion in damages, according to a New York Sea Grant report. In southwest Mexico, the unintentional introduction of a nonnative fish species, the armored catfish, or plecostomus, in the Infiernillo reservoir has had a severe...

Poison: It's what's for dinner

... SALT LAKE CITY As the U.S. southwest grew warmer from 18,700 to 10,000 years ago, junip... as creosote bush. Before creosote invaded the southwest from South America, woodrats ate juniper throughou...ed juniper pollen, showing packrats throughout the southwest ate juniper before the climate warmed. Creosote po...

Desert woodrats switch one dietary poison for another

... As the U.S. southwest grew warmer between 18,700 and 10,000 years ago, juniper trees vanished fro...lso toxic, but not as much as creosote bush. Before creosote came to the southwest from South America, woodrats ate juniper throughout what is now the Great B...

Desert woodrats switch one dietary poison for another

... As the U.S. southwest grew warmer between 18,700 and 10,000 years ago, juniper trees vanished fro...lso toxic, but not as much as creosote bush. Before creosote came to the southwest from South America, woodrats ate juniper throughout what is now the Great B...

Spring fishing season arrives... and with it, amphibian diseases

...ated American chestnuts. An international trade in and transport of infected timber spread Dutch elm disease throughout North America, Europe and southwest Asia. In the case of amphibians and reptiles, millions of kilograms of the animals may be shipped across the U.S. border each year. "Many of th...

Poison: It's what's for dinner

... SALT LAKE CITY As the U.S. southwest grew warmer from 18,700 to 10,000 years ago, junip... as creosote bush. Before creosote invaded the southwest from South America, woodrats ate juniper throughou...ed juniper pollen, showing packrats throughout the southwest ate juniper before the climate warmed. Creosote po...

April 2009 Geology and GSA Today media highlights

...y discordant findings. Here, Moreno et al. show evidence for a glacial re-advance and a cold episode between about 14.8 and 12.6 thousand years ago in southwest Patagonia (50 degrees south), contemporaneous with the Antarctic cold reversal. This was followed by ice recession under cold, but relatively milder, ...

Study assesses impact of fish stocking on aquatic insects

...rally occur in small alpine lakes so they have significant top-down effects on ecosystems," said Karen Pope, a Forest Service scientist at the Pacific southwest Research Station and one of the study's authors. "They prey upon aquatic insects that are also food for other insects, amphibians, birds and bats." ...

New research reveals the earliest evidence for corn in the New World

...is event occurred somewhere in the Central Balsas Valley region of tropical southwest Mexico. However, no research on early prehistoric human settlement and agri...ca about 6,000 years ago. The archaeological record establishes tropical southwest Mexico as an important region where early agriculture occurred in the New W...

Keeping golf courses green when fresh water is limited

...rs and lakes. The use of reuse water in the Las Vegas Valley is expanding through the use of satellite treatment plants into areas in the north and southwest parts of the valley, reducing the need to expand both the water delivery and sewage discharge systems. Clearly, as the practice of using lower-qualit...

Ocean's journey towards the center of the Earth

...at that time," Mr Schellart said. Mr Schellart said the new discovery diffuses the debate about whether the continents and micro-continents in the southwest Pacific have been completely separated since 100 million years ago and helps to explain some of the mysteries surrounding evolution in the region. ...

Little Salt Spring underwater archeological site in Florida receives new funding

...ork at the preserve will give our scientists the tools they need to open a doorway to pre-historic Florida and bring the site's treasures to Florida's southwest community." The spring located about ten miles from the Gulf of Mexico consists of a sinkhole fed by an aquifer that is thousands of feet deep. All ...

Threats to biodiversity rise in the world's Mediterranean-climate regions

...anon. The greatest increase in urban area was in California, USA and Baja California, Mexico. Loss of natural habitat to agriculture was greatest in southwest Australia. Underwood said that urban expansion is worrisome in that it is not only impacting lowlands, which have been the historic urban centers, ...

Federal scientists recognized for contributions to knowledge of bird ecology and habitat

...Marbled Murrelet. Other partners who will be recognized with Raphael at the awards ceremony are C.J. Ralph, Sherri Miller, and Jim Baldwin, Pacific southwest Research Station/USDA Forest Service; Thomas Bloxton, Jr., PNW Research StationUSDA Forest Service; Gary Falxa and Deanna Lynch, US Fish and Wildlife ...

Holy guacamole: invasive beetle threatens Florida's avocados

...," Koch says. "The avocado industry is very concentrated about 7,500 acres southwest of Miami and an invasion by these beetles could cause major damage to the ...eam that hopes to devise a plan in case the Redbay Ambrosia Beetle moves to southwest Miami, as they predict. The team is currently monitoring the beetles' path ...

February 2009 Geology and GSA Today media highlights

...idence for a tropical climate in the high-latitude southwest Pacific in Eocene time. The early Eocene, around 5...cate that animals living on the river plain to the southwest were foraging in more open vegetation compared wit...om the shoreline on the island of Tongatapu in the southwest Pacific. In 2007, Frohlich et al. studied these bo...

Landscape-scale treatment promising for slowing beetle spread

...tection from mountain pine beetles when applied to low to moderate beetle populations," said Nancy Gillette, a Forest Service scientist at the Pacific southwest Research Station and one of nine researchers involved in the study. "Higher beetle populations will probably require higher application rates." Gi...

Statins may treat blood vessel disorder that can lead to fatal strokes

...ically predisposed to CCM," he said. "Of vital importance is the impact this research might have on the large number of our Hispanic population in the southwest and Rocky Mountain West who carry a gene mutation, passed from common ancestors, that predisposes them to CCM." Whitehead and Li suspect statins...

NAU research ties tree mortality trends to climate warming

...data by revisiting trees and providing current measurements and codes for environmental occurrences. "Despite the impact of warming climate, in the southwest we have an opportunity to lower tree mortality rates by thinning forests and restoring surface fires," Ful said. "There is strong empirical evidence t...

LOHAFEX: An Indo-German iron fertilization experiment

... Bremerhaven, January 13th 2008. The German research vessel Polarstern is currently on its way to the southwest Atlantic Sector of the Southern Ocean. The team of 48 scientists (30 from India) on board left Cape Town on 7th January to carry out the Indo-German i...

A case of mistaken dino-identity

...of constituents at the Fort Worth Museum of Science and History, which is a partner with SMU in ongoing research at the Glen Rose site, about 60 miles southwest of Fort Worth. Dr. Aaron Pan, Ph.D., the museum's curator of science, believes it's crucial to get the record corrected. "I think it's going to be ...

January GEOLOGY media highlights

...r" was postulated to explain the geologic similarities between rocks in the southwest United States and those in northwest Sonora, Mexico. To test this idea, Ama...d, with isotopic compositions typical of rocks near Caborca, Mexico, on the southwest side of the fault, even though they were collected from the northeast side ...

Oregon's Rogue River Basin to face climate-change hurdles

...o prioritize and cooperatively pursue strategies and policies to prepare for the changes. "Preparing for Climate Change in the Rogue River Basin of southwest Oregon" is the first of four such reports that, authors say, represent the first such comprehensive scaling down of global models to specific river ba...

Climate change effects on imperiled Sierra frog examined

...breeding," said Kathleen Matthews a Forest Service scientist at the Pacific southwest Research Station and one of the studies authors. Matthews co-authored the...mental Science, Policy and Management, and Krishna Feldman, another Pacific southwest Research Station scientist. The Forest Service funded the study. The Sier...

New national park protects world's rarest gorilla

...t fűr Wiederaufbau Bankengruppe) as part of a 5-year funding program to protect key conservation areas in collaboration with local communities in southwest Cameroon. The initiative was also supported by the World Wildlife Fund, the German Development Service (DED) and the German Technical Cooperation (GTZ...

New papers offer insights into process of malarial drug resistance

...rug resistant malarial genes. One paper from the Ferdig lab appeared in the journal PLoS Biology. The second, in collaboration with Tim Anderson at southwest Biomedical Research Foundation, appeared in PLoS Genetics . ...
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