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Latest Vegetation Stories

2009-09-05 12:16:23

A team of scientists has analyzed 29 esparto fields from Guadalajara to Murcia and has concluded that perennial vegetation cover is an efficient early warning system against desertification in these ecosystems. The study has been published in the Ecology magazine. In order to foresee the appearance of desertification processes, defined by the United Nations as the "degradation of the land into arid, semi-arid and sub-humid areas, resulting from various factors, including climatic variations...

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2009-07-30 09:50:00

An international research team has developed a mathematical and cartographical model that make it possible to view how Mediterranean landscapes evolve in the aftermath of forest fires. In order to carry out this research study, published recently in the journal Environmental Modelling & Software, the authors studied a Special Protection Area for Birds to the south west of Madrid."We have developed a model that shows on maps how various types of plants develop in a Mediterranean landscape,...

2009-06-11 13:55:00

 At times in the distant past, an abrupt change in climate has been associated with a shift of seasonal monsoons to the south, a new study concludes, causing more rain to fall over the oceans than in the Earth's tropical regions, and leading to a dramatic drop in global vegetation growth.If similar changes were to happen to the Earth's climate today as a result of global warming "“ as scientists believe is possible - this might lead to drier tropics, more wildfires and declines in...

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2009-05-05 16:33:31

U.S. scientists say they've determined a warmer climate might produce dry vegetation, and the types of plants in an area can mitigate wildfire occurrences. Lawrence Livermore National Laboratory scientist Tom Brown, Philip Higuera of Montana State University and their colleagues looked at the direct and indirect impacts of millennial scale climate change on fire occurrence in the south-central Brooks Range in Alaska by analyzing sediments found in the bottom of lakes. They said they...

2009-04-22 15:02:22

Many scientists say climate change might increase wildfires around the world, but a new U.S. study suggests plant growth changes could resolve the problem. Ecological researcher Philip Higuera of Montana State University and his colleagues say although changing temperatures and moisture levels can increases wildfire frequency, they also change the distribution and abundance of plants. And, since vegetation plays a major role in determining the flammability of an ecosystem, vegetation can...

2009-04-21 14:25:34

Paleoecological data reveal strong influence of vegetation changes on wildfire frequency The increase in warmer and drier climates predicted to occur under climate change scenarios has led many scientists to also predict a global increase in the number of wildfires. But a new study in the May issue of Ecological Monographs shows that in some cases, changes in the types of plants growing in an area could override the effects of climate change on wildfire frequency. Philip Higuera of Montana...

2009-04-08 08:43:49

Climate change will bring about major shifts in worldwide fire patterns, and those changes are coming fast, according to a first-of-its-kind analysis led by researchers at the University of California, Berkeley, in collaboration with scientists at Texas Tech University. The findings are reported in the April 8 issue of PLoS ONE, an open-access, peer-reviewed journal of the Public Library of Science. Researchers used thermal-infrared sensor data obtained between 1996 and 2006 from European...

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2009-03-24 09:30:41

Conserving Australia's most endangered snake might mean lighting more bush fires, ecologists have proposed. The last remaining populations of broad-headed snakes are being threatened by encroaching woodland that is destroying their habitat, a study by scientists from the University of Sydney and Stanford University (USA) has shown. "Broad-headed snakes are only found living in small pockets within 200 km of Sydney, and those small communities are fast becoming extinct or increasingly more...

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2009-02-11 07:54:07

A UA-led research team has found that as the climate warms, plants are flowering at higher elevations in the Santa Catalina Mountains. Plants are flowering at higher elevations in Arizona's Santa Catalina Mountains as summer temperatures rise, according to new research from the University of Arizona in Tucson. The flowering ranges of 93 plant species moved uphill during 1994 to 2003, compared to where the same species flowered the previous ten years. During the 20-year study period, summer...

2009-01-29 09:59:36

A team of Czech, Spanish and British scientists has produced the first map to outline the level of alien plant invasions across the European Union. The researchers said biological invasions are one of the major threats to biodiversity and also affect the economy and human health. For their effective management it is important to understand which areas and ecosystems are at the highest risk of being invaded, the researchers said. Plant ecologists investigated species composition of vegetation...


Word of the Day
omadhaun
  • A fool; a simpleton: a term of abuse common in Ireland and to a less extent in the Gaelic-speaking parts of Scotland.
This word is partly Irish in origin.