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Tag: "land" at biology news

Ecological destruction fuels emerging diseases

...man health by turning parasites into "evolutionary land mines." Dr. Daniel (Dan) Brooks, a parasitologist... beings are stimulating. These little evolutionary land mines are going to jump up and bite us." ...

Solution to Pollution: New Bacteria Eats Toxic Waste

...to apply preservatives to wood, yet Sims found the land to be relatively free of toxins and asked the question, why? After conducting soil analysis tests, Sims found microbes in the soil that had destroyed the toxic chemicals. Sims then collaborated with researchers from the Utah State biology department...

Essential mangrove forest threatened by cryptic ecological degradation

...n up by mangroves, forests thriving at the edge of land and sea that are ecologically and socio-economically important for local people in tropical countries on all continents. Using biology, geography, hydrology, socio-economic interviews, and 18th-century history, an international team led by Dr. Farid ...

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

... seabirds transfer nutrients from the ocean to the land by feeding on marine fish and invertebrates and spreading nutrient-rich guano around the islands. Add foxes, and the indirect effects on the whole ecosystem are as dramatic as the direct effects on the seabirds. "Introduced species are a global phen...

South America's vast pantanal wetland may become next everglades, UNU experts warn

...ng, energy production, mining and other changes in land use in and around the Pantanal. "Without extremel...tions of its water courses and conversion to other land uses." "Moreover, global climate change poses great environmental threats to wetlands," according t...

Falling ants glide back to trunk to avoid dangers of forest floor

...attacking him and noticed their uncanny ability to land on the tree's trunk and climb back to the very spo...opy species called Cephalotes atratus ?are able to land on the tree trunk and climb back up, as compared to a mere 5 percent that would be expected to land ...

How the environment could be damaging men's reproductive health

...icals. POPs from polluted soils are washed off the land into the sea. Additionally, the atmosphere plays an important role in their transport over long distances. POPs have a strong tendency to bioaccumulate in marine and terrestrial food webs. Humans, being at the top of the food web, particularly are ex...

Dead zone area in Gulf could be increasing, researchers say

...r in the United States, draining 40 percent of the land area of the country. It also accounts for almost 90 percent of the freshwater runoff into the Gulf of Mexico. "We saw no hypoxia in this area until June of last year, and this year we found in late March," DiMarco says. "If the physical conditions ...

Biodiversity hotspots identify conservation priorities

...ften in tropical forest areas) cover a small total land area yet account for a very high percentage of glo...t include logging and intentional burning to clear land for livestock or agriculture. Hotspots Revisited was produced by CEMEX, one of the world's largest ...

Scientists discover how plants disarm the toxic effects of excessive sunlight

...satellite image maps chlorophyll concentrations on land as well as in oceans, lakes and seas. This image provides a snapshot of photosynthetic capacity and significant sources of singlet oxygen, a toxic byproduct of photosynthesis, in the biosphere. See the image at: http://earthobservatory.nasa.gov/Obser...

NASA study finds snow melt causes large ocean plant blooms

... snow and evaporation of wet soil. As a result the land mass heats up more in summer creating a larger tem...ce is responsible for a disparity in pressure over land and sea, creating a low pressure system over the Indian subcontinent and a high pressure system over...

Small species back-up giant marsupial climate change extinction claim

...k bed, the team uncovered 44 species, ranging from land snails, frogs, lizards and small mammals to giant wombats and kangaroos including many species previously unknown to have occurred in the Darling Downs fossil record. The results suggest that the extinction of Darling Downs megafauna was caused by a...

Growth in biomass could put US on road to energy independence

...mass could play, whether the United States has the land resources and whether such a plan would be economi...be achieved with only relatively modest changes in land use and agricultural and forestry practices. "One of the main points of the report is that the Unit...

Human Cells Filmed Instantly Messaging for First Time

...mass could play, whether the United States has the land resources and whether such a plan would be economi...be achieved with only relatively modest changes in land use and agricultural and forestry practices. "One of the main points of the report is that the Unit...

Shift of weather patterns necessitates rethinking of reforestation methods

...Woods area. Approximately 61 percent of the forest land was owned by non-industrial private forest landown...cience and education, made available two tracts of land ?each about 100 acres in size ?on long-term, no cost leases, for forestry research. ...

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

...nell-Rodwell was the first to suggest that a large land animal is capable of sending and receiving vibrational messages. "A lot of research has been done showing that small animals use seismic signals to find mates, locate prey and establish territories," she notes. "But there have only been a few studies...

The evolutionary triumph of flower power

...cause people didn't destroy them when they cleared land for agriculture. Instead, they cultivated them and have been doing so for more than 5,000 years. Ironically, many domesticated flowers have been so selected by humans that nature's pollinators ?the bugs and birds ?no longer find them attractive. So ...

New World founders small in number

...- descendants of archaic humans crossed the Bering land bridge from Siberia to North America. Several lines of evidence support this model, but that's where the consensus ends and the details are hotly debated. In a paper published in the premier open-access journal PLoS Biology, Jody Hey now reveals how ...

Taking the piste out of Alpine vegetation

...y are also sensitive and susceptible to changes in land use and climate. ...

Man-made wetland's effectiveness similar to natural marsh

... environment, wetlands act as buffer zones between land and waterways. They also act as sinks ?wetlands filter out chemicals in water that runs off from farm fields, roads, parking lots and other surfaces, and hold on to them for years to come. But the jury is still out on how long a wetland can remain a...

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