Tag: "climatic" at biology news
DFG establishes 11 new research units
...ers aim to gain new insights into Central Europe's climatic
history, including information on precipitation levels and temperature fluctuations in the past. Life Sciences Molecular biologists and veterinary scientists in the Research Unit "Pathogen-specific Defence Mechanisms in the Mammary Gland" at the un...
Lethal needle blight epidemic may be related to climate change
...ease in precipitation had no clear link to a known climatic
oscillation that might have explained it, and the authors conclude that it is most likely related to a directional climate trend. The report of Woods et al. appears to represent one of a growing number of examples of an indirect effect of climate cha...
Scientists must offer solutions for conserving tropical forests in a rapidly changing world
...are also being altered in insidious ways by global climatic
and atmospheric changes. "The evidence for global effects suggests that a massive reorganization of the structure and dynamics of tropical forests is already underway" writes ecologist S. Joseph Wright, "The tropics support over half of all species ...
Using satellite observations to investigate 'greening' trends across Canada and Alaska
... record to document unique vegetation responses to climatic
warming, and then projecting those trends forward in time, is now being extended to circumpolar forests. The research will be highlighted in upcoming issues of Proceedings of the National Academy of Sciences (PNAS) and in Geophysical Research Lett...
Can ancient rocks yield clues about catastrophes like Hurricane Katrina?
...hanisms and processes that led to repetitive rapid climatic
change with major impact on the ocean during past greenhouse conditions. By analysing sediments laid down on the ocean floor about 85m years ago in the Cretaceous, the research team found evidence that Cretaceous greenhouse climate was highly variab...
IODP Tahiti sea level expedition gets underway
...during the circumscribed period and information on climatic
anomalies, including El Nio/Southern Oscillation e...ccurate, sensitive recorders of past sea level and climatic
change. The science party will analyze fossil, i.e. dead corals, because they form archives that he...
Underlying cause of massive pinyon pine die-off revealed
...rm changes in ecosystems that occur in response to climatic
and other environmental variation. So in 1987, researchers established a study site in the pinyon-juniper woodland zone at LANL. Roughly every two weeks, Breshears and his colleagues measured soil moisture on the 100-by-150 meter plot (about three ti...
GSA should stand for 'going strong again' for the UC Department of Geology as always
...he Himalaya is essentially controlled by two major climatic
systems; the mid-latitude westerlies and south Asi.... To help resolve the relative importance of these climatic
systems, we studied two massifs in northwestern Tibet, Mushtagata and Mt. Kongur, of which present-d...
Oil spills and climate change double the mortality rate of British seabirds
...on (NAO) index (an annual measure of a large scale climatic
phenomenon affecting winds, temperature and rainfa...t population. The consistently high values of this climatic
phenomenon for the past 30 years may be due to human-induced global climate change. If this is the c...
California's oak woodlands face a new threat: Climate change
...l ranges for blue oak and valley oak under the new climatic
conditions, and compared that with their ranges un... species are not present in much of the area where climatic
conditions will be right for them in the future. "Suitable habitat is lost in the southern part of t...
'New' science gleans knowledge from ancient lands and societies
...ree growth rings has demonstrated that the current climatic
conditions of temperature and precipitation have not occurred at any time in the past 2,000 years. Such long-term research can help to understand the natural fluctuations in Earth's average temperature or even the fluctuations in the density of atmos...
New evidence extends greenhouse gas record from ice cores by 50 percent, adding 210,000 years
...past, the authors found. This suggests that abrupt climatic
events on time scales relevant to societies may be common features of the last climatic
cycles. The stable relationship between carbon dioxide, methane and Antarctic climate over the last ...
Max Planck researchers win part of Descartes Research Prize 2005
... new "state-of-the-art" knowledge about the arctic climatic
system and its influence on Europe. Project co-ordination: Prof. Ola M. Johannessen, Nansen Environmental andRemote Sensing Centre (Norway), together with Prof. Lennart Bengtsson,Max Planck Institute for Meteorology (Germany) and Dr. Leonid Bobylev,S...
Research: Snails were overlooked contributors to marsh destruction
...eral, the take-home lesson here is that increasing climatic
extremes, such as drought stress, can trigger formation of grazer fronts and subsequent waves of habitat die-off in an otherwise stable ecosystem," Silliman said. "For marsh ecology, the message is even clearer: The long-standing paradigm that botto...
Deep-rooted plants have much greater impact on climate than experts thought
...re and letting water go, in a dynamic way that has climatic
implications," Dawson said. Dawson and Fung plan to continue their collaboration to improve the way that plants are represented in global climate models....
Study finds evolution doesn't always favor bigger animals
...rature. On average, for every degree centigrade of climatic
cooling, each of the species of Poseidonamicus inc...portant because it establishes a firm link between climatic
change and the body size of organisms, paving the way for a better understanding of the evolution of...
Global warming - the blame is not with the plants
...the effect of reforestation programs. However, the climatic
benefits gained through carbon sequestration by reforestation far exceed the relatively small negative effect, which may reduce the carbon uptake effect by up to 4 per cent. Thus, the potential for reduction of global warming by planting trees is mos...
Patterns in genome organization may partially explain how microbial cells work
... of the ocean off South America that causes El Nio climatic
events. The wavelet analysis of bacterial genomes yielded "scalograms," maps colored to elucidate the strength of a variety of periodicities associated with chromosome position. Just as the wavelet analysis identified significant increases in sea sur...
Vital organs in the Earth system: What is the prognosis?
...essment and will be discussed here. In addition to climatic
simulation, the models show how other human-induced changes -- including fertilization of agricultural land, land use change, pollution, carbon dioxide emissions, etc. -- affect ecosystems, the hydrosphere and the atmosphere. The models' complex feed...
Mining the human genome for signs of recent selection
...vent of agriculture, shifts in diet, new habitats, climatic
conditions--over the past 10,000 years, and we're using these data to look for those signals of very recent adaptation." Among the more than 700 signals the team found were previously known sites of recent adaptation, such as the salt-sensitive hyper...
1 2 3 4 5 6