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Biotic in Biological News

New species of phallus-shaped mushroom named after California Academy of Sciences scientist

...din and Perry named the new species after Drewes as an acknowledgment of his "inspiration and fortitude to initiate, coordinate and lead multiorganism biotic surveys on Sao Tome and Principe," according to the Mycologia paper. "It's a wonderful honor and great fun to have this phallus-shaped fungus nam...

Princeton geoscientist offers new evidence that meteorite did not wipe out dinosaurs

...esent in sediments below the impact layer and counted all 52 still present in the layer above it, indicating that the impact has not had the devasting biotic effect on species diversity as has been suggested. "Not a single species went extinct as a result of the Chicxulub impact," Keller said. In contras...

Host shift triggers cascading effect on ecosystem, research finds

...a postdoctoral researcher in professor Jay Rosenheim's laboratory in the UC Davis Department of Entomology. "It also suggests why certain areas and/or biotic regions may have more species than others." The research, "Sequential Sympatric Speciation Across Trophic Levels," published Feb. 6 in the journal...

New paper offers key insights into how new species emerge

...wing mass extinction events, for why certain groups of organisms with certain lifestyles may be more diverse than others, and for why certain areas of biotic regions may have more life forms than others," Feder said. Where Darwin once traveled to the Galapagos Islands and sleuthed to other far-flung places...

January-February GSA Bulletin media highlights

...ion years. This is the first estimate for the duration and age of the Ludlow Member, and it can be used as an important tool for interpreting rates of biotic recovery after the K-T extinction. Paleogene landscape evolution of the central North American Cordillera: Developing topography and hydrolog...

Academy participates in project to discover drugs, biofuels in tropical seas

...n evolutionary biologist at the Academy, the oldest natural science research institution and museum in the Americas. Rosenberg already has developed a biotic database documenting more than 25,000 species of Indo-Pacific marine mollusks. He oversees the Academy's world-renowned collection of more than 10 mil...

Discovering drugs, biofuels in tropical seas

...an of malacology (the study of mollusks) and an evolutionary biologist at the Academy of Natural Sciences in Philadelphia, who already has developed a biotic database documenting more than 25,000 species of Indo-Pacific marine mollusks. The second aim is discovery of biologically active molecules from bact...

What is wild? Odor attraction among different wildtype Drosophila

...firm what researchers in the field of Chemical Ecology have observed with other organisms: that the behavior of animals, as well as plant responses to biotic or abiotic stress, are less regulated by an individual signal, but rather by a complex composition and amount of particular volatile compounds. In...

October 2008 GEOLOGY and GSA TODAY media highlights

... Canada. Pages 771-774. The Permian-Triassic boundary interval (circa 252 million years ago) saw unparalleled species loss in the marine realm, and biotic recovery was delayed relative to other mass extinctions. A major unresolved question has been about where the marine organisms that recovered from the...

Southern Sierra Science Symposium planned for Visalia

...management of broader mixed-use landscapes, through science. This has included the management of plant and animal populations, wilderness stewardship, biotic inventories, and environmental monitoring. Over the years, David has served on a variety of Congressional, agency, and NGO advisory panels, including ...

September Geology and GSA Today media highlights

...cification crises. Most of what we know about climate and global change in the middle Cretaceous was derived from the study of geochemical proxies and biotic change in deep-water sequences. Comparatively much less is known from shallow-water carbonate systems, although they are an important part of the glob...

RV Polarstern on its way to East Siberian Sea

...n its way. These data shall help to understand climate relevant systems of currents in the Arctic Ocean. Changes to marine currents also affect the biotic environment. This is why biologists investigate the species assemblage in samples of various regions and depths and compare them with measurements tak...

Geology and biology meet in the history of US southwestern desert surface waters

...n and speciation. The book's 19 papers summarize and integrate geologic and biotic perspectives to provide a current synthesis of the aquatic history of this ... the Southwestern Great Basin and Lower Colorado River Region: Geologic and biotic Perspectives is dedicated to Carl Leavitt Hubbs (1894-1979) and Robert Rush...

Scientists to explore global change-public health connection

... Climate Change Affect Avian Influenza? Tuesday, May 13 Andrew Dobson, Princeton University: Disentangling the Role of Climate, Immunity, and biotic Interactions in the Dynamics of Infectious Diseases Duane Gubler, University of Hawaii: The 20th Century Emergence and Spread of Ep...

Conservation of freshwater fish biodiversity: a challenge for the countries of the South

...diversity of the non-native fish species. Three hypotheses were tested: the biotic resistance, biotic acceptance and human activity. The first suggests that a high diversity of ...

Is it organic or not?

...rs are used in the organic production of sweet peppers; however, further studies including the effects of different soil characteristics, climate, and biotic or abiotic stress could be useful in determining the proper interval of 15N-values to exclude non-organic fertilization practices for certific...

December GEOLOGY and GSA TODAY media highlights

...emical evidence from a South China section (an optimal section to study the biotic crisis) that indicates a two-episodic global change in association with the... bolide impact. The temporal sequence of these two events suggests that the biotic crisis was a consequence of prolonged and episodic changes in the marine an...

Entomological Society announces 2007 award winners

...ion, particularly those implicated in aquatic-terrestrial habitat shifting. He serves as a collaborating specialist for aquatic beetles in a number of biotic surveys, including Costa Rica, Venezuela, Mongolia, New Caledonia, and Thailand, and has authored more than 20 peer-reviewed publications. Short is pr...

November GEOLOGY and GSA TODAY Media Highlights

...ms living in the photic zone. These results are important as they suggest a long-term oceanographic, rather than extraterrestrial, mechanism for these biotic crises, and shed new light on the long-term ecological influence of mass extinctions on the distribution and diversity of marine communities. ...

Fossilized cashew nuts reveal Europe was important route between Africa and South America

... they were in existence millions of years before humans. The cashew had already evolved more than 45 million years ago, apparently in association with biotic dispersers, they write. ...

First orchid fossil puts showy blooms at some 80 million years old

...ears ago, and thus our estimates of 60 to 70 million years for the age of Vanilla suggest that tropical continents were still experiencing significant biotic exchange much after their dramatic split." ...

'Fruit fly dating game' provides clues to our reproductive prowess

...localities we can analyze the marine microfossils in the sediments directly above and below the Chicxulub impact layer and cannot find any significant biotic effect," said Keller. "We cannot attribute any specific extinctions to this impact." No one has ever published this critical survival story before, sh...

Far more than a meteor killed dinos

...localities we can analyze the marine microfossils in the sediments directly above and below the Chicxulub impact layer and cannot find any significant biotic effect," said Keller. "We cannot attribute any specific extinctions to this impact." No one has ever published this critical survival story before, sh...

Plants tell caterpillars when it's safe to forage

...bviously no use against a cow, but proves effective when the offender is a caterpillar and the summoned predator is a wasp. Just how much control such biotic factors exert over a forager's daily routine has remained an open question. But in a new study in the open access journal PLoS Biology, Kaori Shiojiri...

Wild grasses and man-made wheats advance research capabilities

...reeder, is looking at wild grass species and synthetic wheats for possible solutions. "We're looking for new unique sources of resistance to various biotic and abiotic stresses," Rudd said. "I'm being forced to find broader gene pools to bring in the genetic variability I believe is necessary for the gene...

Ancient DNA helps clarify the origins of two extinct New World horse species

...a," Cooper says. "And instead, our data show that they probably diverged and moved into South America around three million years ago, during the great biotic interchange that occurred when the Panama Isthmus was established." And while morphological similarities between American stilt-legged horses and c...

Stealth Worms May Improve Insect Pest Control

...forestry systems, and also for controlling insect pests of human and veterinary importance," Stock says. In each location the scientists start with biotic surveys to find out which nematodes and their corresponding bacteria meet local pest management goals. Then they gather samples from soil or other hab...
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