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Tag: "ecology" at biology news

Introduced foxes transformed vegetation on Aleutian Islands from lush grasslands to tundra

...ays," said Donald Croll, an assistant professor of ecology and evolutionary biology at the University of Cali... the foxes, said James Estes, adjunct professor of ecology and evolutionary biology at UCSC and a coauthor of the paper. "Most seabirds only have a single off...

Why do insects stop 'breathing'? To avoid damage from too much oxygen, say researchers

...e to their tissues. Timothy Bradley, professor of ecology and evolutionary biology at UCI, and Stefan Hetz, assistant professor of physiology at Humboldt University, Germany, report their findings in the Feb. 3 issue of Nature. The insect respiratory system is designed to accommodate occasions when the ins...

A new study examines how shared pathogens affect host populations

...n Naturalist is a leading journal in the fields of ecology and evolutionary biology and animal behavior. For more information, please see our website: www.journals.uchicago.edu/AN Volker H. W. Rudolf and Janis Antonovics, "Species coexistence and pathogens with frequency-dependent transmission" 165:7 July 2...

Cricket's finicky mating behavior boosts biodiversity

...s. The more species you have, the more complex the ecology is going to be." In down-to-earth terms: "What turns a female cricket on? Why does she prefer one pulse rate over another? Whatever the reason, it's very important that she exercise this preference in order to keep the species distinct." Mendelson...

Flocking together: Study shows how animal groups find their way

... the little guy," said Daniel Rubenstein, chair of ecology and evolutionary biology. "You don't need avowed leaders, you don't need complex signaling." In the simulations, a small number of "informed" individuals was just about as effective in leading a large group as a small one. When the size of the group...

Study reveals new technique for fingerprinting environmental samples

... environments. This may well develop environmental ecology into a fully quantitative science." Dubbed Environmental Genomic Tags, or EGTs, these indicators capture a DNA profile of a particular niche and reflect the presence and levels of nutrients, pollutants, and other environmental features. The EGT app...

Aggressive aquatic species invading Great Lakes

...arp, are invading the Great Lakes and changing the ecology of this vital ecosystem. A study from McMaster University published in the March issue of the Journal of Great Lakes Research suggests that for the round goby, a recently introduced fish species, their ability to wrest territory from native fish play...

Scientists journey to southern Africa to unravel the secret world of elephant communication

...n 1995 she was accepted to the doctoral program in ecology at UC-Davis and began working with Professor Lynette Hart, an authority on the social behavior of large mammals. Their first goal was to prove to themselves, and to the scientific community, that elephants actually have the physical capability to sen...

Stanford gut check shows diversity of intestinal ecosystem

...es and borrowing statistical techniques from field ecology and population genetics, Paul Eckburg, MD, a postdoctoral scholar in infectious diseases and geographic medicine, conducted the most extensive study to date surveying the inhabitants of the lower digestive tract. In the three healthy subjects he stud...

Finding hidden invaders in a Hawaiian rain forest

...o species of invading plants that are changing the ecology of rain forest near the Kilauea Volcano in the Hawaii Volcanoes National Park. Lead author, Dr. Gregory Asner of the Carnegie Institution's Department of Global Ecology, explained: "We found chemical fingerprints from the plant leaves and used them t...

A New Species of Monkey is Discovered in Tanzania: The First in Africa for More Than 20 Years

...on. The Udzungwas remain a focus for conservation ecology research, as should the Southern Highlands, and we must continue to strongly support Tanzania’s conservation efforts.? Butynski fully agrees, adding that, “This discovery is especially important because it not only expands the diversity of the genus...

Where bacteria get their genes

...oauthors are Nancy Moran, UA Regents' Professor of ecology and evolutionary biology and BIO5 member, and Emmanuelle Lerat, now at Universite Claude Bernard (Lyon, France) and Vincent Daubin, now at the Centre national de la recherche scientifique (CNRS) in France. The research was funded by the Department of...

Alcohol consumption disrupts breastfeeding hormones

... and appetite, health and well being, and chemical ecology and communication. For more information about Monell, please visit www.monell.org or email media@monell.org. CITATION: Julie A. Mennella, M. Yanina Pepino, and Karen L. Teff. Acute alcohol consumption disrupts the hormonal milieu of lactating women....

Evidence of 600-million-year old fungi-algae symbiosis discovered in marine fossils

... Virginia Tech; and Thomas N. Taylor, professor of ecology and evolutionary biology at the University of Kansas, report their finding in the May 13 issue of Science ("Lichen-Like Symbiosis 600 Million Years Ago"). Yuan, Xiao, and their collaborators have been exploring the Doushantuo Formation in South Chin...

Where Bacteria Get Their Genes

...oauthors are Nancy Moran, UA Regents' Professor of ecology and evolutionary biology and BIO5 member, and Emmanuelle Lerat, now at Universite Claude Bernard (Lyon, France) and Vincent Daubin, now at the Centre national de la recherche scientifique (CNRS) in France. The research was funded by the Department of...

ORNL, UC Berkeley unravel real-world clues to Earth's mysteries

...together researchers with expertise in biology and ecology of microbial communities, analytical technologies and bioinformatics." Banfield and colleagues at UC Berkeley supplied the bacterial samples and characterized genome information while Hettich and Nathan VerBerkmoes, a post-doctoral student in ORNL's...

Researchers use 3-D imaging system to unveil swimming behavior of microscopic plankton

...iting challenge for future research in zooplankton ecology and evolution." ...

Caloric restriction won't dramatically extend life span in humans: UCLA research

...t and longevity. He and Michael Rose, professor of ecology and evolutionary biology at the University of California, Irvine, published their findings in a journal article titled, "Why dietary restriction substantially increases longevity in animal models but won't in humans," published in the August issue of...

Why are coyotes getting more aggressive?

...lleagues are launching a five-year study of coyote ecology and behavior in urban and suburban areas of New York state, thanks to a grant of $428,000 from the New York State Department of Environmental Conservation (DEC). Additional funding from DEC through an existing study with Dan Decker, director of the C...

Space matters: Estimating species diversity in the fossil record

...is assumption and discover that the golden rule of ecology holds for the rock record as well. Just as geographic sampling influences diversity counts in the modern landscape, the species-area effect strongly influences counts in the fossil record. Taking this into account will alter historical estimates of s...

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