Tag: "rainfall" at biology news
Smithsonian scientists show differing patterns of rainforest biodiversity
..., where steep gradients in elevation, temperature, rainfall
and other environmental factors boost diversity by creating diverse habitats within a short distance. Such change in a regions species makeup between sites is called beta diversity: some rainforests have steep environmental gradients and high beta di...
Link between sunspots, rain helps predict disease in east Africa
...the ground will use this research to predict heavy rainfall
events," Stager said. "Those events lead to erosio...peak is expected in 2011-12. If the pattern holds, rainfall
would peak the year before. Because mosquitoes and other disease-carrying insects thrive in wet co...
Study finds contaminated water reaching Florida's offshore keys
... The frequency of detecting viruses increased with rainfall
in the summer months, when the viruses were most likely to be found in groundwater. Lipp cautioned, however, that the test used to identify the enteric viruses was not designed to determine whether the viruses were alive or dead. Until we actually...
Save our reef, save our heritage
...ng and are especially vulnerable to the increased rainfall
expected in some areas under climate change, he says. The ICOMOS conference will focus on developing strategies and awareness for the management and mitigation of the risks facing heritage sites. The conference includes speakers and representativ...
Geologists witness unique volcanic mudflow in action in New Zealand
...ped until 2008. However, several days of intense rainfall
and increased seepage through the bank ultimately caused it to collapse much sooner, on March 18, 2007. A lahar warning system had been installed at Mount Ruapehu, and was hailed a success after it successfully alerted officials to the onset of the...
Satellite images reveal link between urban growth and changing rainfall patterns
...o demonstrate a link between rapid city growth and rainfall
patterns, as well as to assess compliance with an ...tween the rapid growth of cities and a decrease in rainfall
during the winter dry seasons from 1988 to 1996. ''We found that as the cities get bigger, there i...
Early fire risk for mountains near Los Angeles
...the fire season. Three other variables involved rainfall
amounts during various periods: the Nov. 1-May 31 ...ril-May) precipitation. The study found spring rainfall
amounts at a University of California, Los Angeles, weather station can be used to make statisticall...
MIT tool determines landslide risk in tropics
..."The fact that the Baguio area has constant, heavy rainfall
makes it very susceptible to landslides, which occ... a popular tourist destination. The average annual rainfall
for the city on the South China Sea is 142 inches (3,648 millimeters); temperatures rarely reach 80 ...
University of Arizona launches major scientific research initiative at Biosphere 2
...H. Inside, the team will control temperature and rainfall
to mimic the environmental conditions right outside the chamber. Just outside the chamber, the researchers will build replicas of the indoor hill slopes and conduct the same experiments. Mimicking the local conditions inside the chamber will let the ...
Climate change signal detected in the Indian Ocean
...regions relevant to the source and distribution of rainfall
across southern Australia," Dr Alory said. The r...s and resource managers understand fluctuations in rainfall
patterns over southern Australia. The research, contributing to the Australian Climate Change Sci...
Jaap Sinninghe Damst awarded the Vernadsky Medal for innovative use of biomarkers
...am has unexpectedly found that they can record the rainfall
over time independently from the environmental tem...e very wet. It was only around 8,000 years ago the rainfall
declined and the environment settled into what it's like in the present day," explained Sinninghe Da...
ESA presents the sharpest ever satellite map of Earth
...t of more dynamic environmental parametres such as rainfall
and vegetation condition for FAO's global and national food security early warning programmes on which ESA and FAO cooperate closely," FAOs Dr. John Latham explained. "It will also significantly contribute to the monitoring and assessment of globa...
Scientists: As rainfall changes, tropical plants may acclimate
...e more adaptable than commonly thought to changing rainfall
patterns expected to accompany a warming climate, ...ii have the ability to acclimate to big changes in rainfall
in at least one important respect how they get nutrients. The plants largely rely on one form of th...
Tropical plants go with the flow ... of nitrogen
...." Working in six well-known sites with variable rainfall
on Hawaii's Maui Island, the researchers measured ...masses, known as isotopic ratios, across different rainfall
climates, they discovered an abrupt shift in the nitrogen cycle and in the nutritional strategies of...
Drought limits tropical plant distributions, scientists at the Smithsonian report
...ratures may be relatively constant in the tropics, rainfall
and water availability often vary dramatically acr... Forest Science. The plots are distributed over a rainfall
gradient from the wet Caribbean slope to the drier Pacific slope. "It was a surprise that even in h...
Climate change a threat to Indonesian agriculture, study says
...archers focused on how climate change could affect rainfall
and agriculture in Indonesia in the next 50 years. Using output from 20 global climate models tailored to the complex local topography of the Indonesian archipelago, the authors found that the probability of experiencing a harmful delay in monsoon ra...
Ancient coral reef tells the history of Kenya's soil erosion
... focus on mega-droughtsperiods of severely reduced rainfall
that lasted for decades in East Africa. The most recent mega-drought occurred between 1750 and 1820. "If you think how many people live in East Africa now, if a mega-drought happened today, it would be devastating," Dunbar said. ...
Microfossils unravel climate history of tropical Africa
...re difference with existing records of continental rainfall
variability, lead author Johan Weijers and his colleagues concluded that the land-sea temperature difference has by far the largest influence on continental rainfall. This can be explained by the strong relationship of air pressure to temperature. Wh...
Story tips from the Department of Energy's Oak Ridge National Laboratory, March 2007
...ational Sciences and Engineering Division. Because rainfall
turns to infiltration and runoff and ultimately finds its way to river basin outlets, researchers believe river flow measurements provide a good indication of aggregate rainfall. Ganguly noted that the nonlinear equations developed for this work are ...
CSIRO imagery shows Outer Great Barrier Reef at risk from river plumes
...arrying a larger sediment load than during regular rainfall
and river flow. As such floods have not occurred for a while the accumulated material in the creeks ands rivers coupled with increased sediment runoff from the land is causing a significant transport of terrestrial material to all areas of the affec...
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