Tropical Medicine Current Events | Tropical Medicine News | 8
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Soil nutrients shape tropical forests, large-scale study indicates
Tropical forests are among the most diverse plant communities on earth, and scientists have labored for decades to identify the ecological and evolutionary processes that created and maintain them. view more (2007-01-12)
On the volcano island Krakatau: regeneration of rain forest goes hand in hand with genetic diversity
Rain-forest trees colonizing a new piece of land contain a large genetic diversity. The Indonesian island Krakatau is a good natural test case for disrupted tropical rain forest. Here, fig species hybridise unexpectedly. A lesson for the future of nature reserves. Just today, May 13, Tracey Parrish of the Netherlands Institute of Ecology... view more... (2002-05-13)
Soil fertility in the tropics can be influenced by landscape and precipitation, study finds
A new study conducted in the Hawaiian Islands has revealed that landscape and erosion play crucial roles in determining soil fertility in tropical ecosystems. view more (2005-07-20)
New Evidence Of Impact Of Global Changes On Remote Tropical Rainforests
Scientists have shed new light on the impact of global environmental changes on remote tropical forests with studies that show that the rates of growth and death of trees in pristine forests across the Amazon have accelerated substantially in recent decades. The scientists also demonstrate that the tropical forests globally have warmed by half a... view more... (2004-02-06)
Hurricane frequency is up but not their strength, say Clemson researchers
In a new study, Clemson University researchers have concluded that the number of hurricanes and tropical storms in the Atlantic Basin is increasing, but there is no evidence that their individual strengths are any greater than storms of the past or that the chances of a U.S. strike are up. view more (2009-09-23)
Researchers link Ice Age climate-change records to ocean salinity
Sudden decreases in temperature over Greenland and tropical rainfall patterns during the last Ice Age have been linked for the first time to rapid changes in the salinity of the north Atlantic Ocean. view more (2006-10-05)
Dengue fever costs billions in health care, lost productivity and absenteeism
Researchers at Brandeis, in collaboration with several other institutions worldwide, have pinpointed for the first time the multi-country economic costs of dengue fever, the endemic and epidemic mosquito-borne illness that is a rapidly growing public health problem in tropical and sub-tropical countries. view more (2009-05-08)
Scientists: As rainfall changes, tropical plants may acclimate
Tropical plants may be more adaptable than commonly thought to changing rainfall patterns expected to accompany a warming climate, new research shows. view more (2007-05-08)
TREATING CATTLE WITH INSECTICIDE - A NEW APPROACH FOR MALARIA CONTROL IN SOUTH ASIA (p 1837)
Insecticide treatment of livestock could be a new, cost-effective malaria-control strategy in south Asia, conclude authors of a study in this week's issue of THE LANCET. Indoor spraying of houses with insecticide - the standard method of malaria control in south Asia - is becoming prohibitively expensive to implement and new approaches are... view more... (2001-06-06)
The Influence Of Disturbance On Tropical Rain Forest Biodiversity : End Of A Controversy In Sight
The many species which make up tropical rain forest tree communities show widely differing reactions to environmental factors. This is particularly so with regard to light. Pioneer species, highly heliophile (light-loving or shade-intolerant), establish themselves by taking advantage of canopy light gaps opened up by treefalls. Rapid growth, a... view more... (2002-01-03)
Caribbean corals decline 80% in 25 years
Coral reefs across the Caribbean have suffered a phenomenal 80% decline in their coral cover during the past three decades, reveals new research from the University of East Anglia (UEA) and the Tyndall Centre for Climate Change Research, published this week in the international online journal Science Express. The amount of reef covered by hard... view more... (2003-07-17)
Food security for leaf-cutting ants: Workers and their fungus garden reject endophyte invaders
New diseases directly affect human survival and food security, especially as population density climbs. Leaf-cutting ants, one of a few groups of social insects to cultivate crops, have harvested plant material to fertilize their underground fungal gardens for ~50 million years. view more (2009-04-03)
Researchers discover trees in Amazon much older than assumed, raising questions on global climate impact of region
Trees in the Amazon tropical forests are old. Really old, in fact, which comes as a surprise to a team of American and Brazilian researchers studying tree growth in the world's largest tropical region. view more (2005-12-14)
The Influence Of Disturbance On Tropical Rainforest Biodiversity: End Of A Controversy In Sight
The many species which make up tropical rain forest tree communities show widely differing reactions to environmental factors. This is particularly so with regard to light. Pioneer species, highly heliophile (light-loving or shade-intolerant), establish themselves by taking advantage of canopy light gaps, opened up by treefalls. Rapid growth, a... view more... (2001-11-23)
Long-term increase in rainfall seen in tropics
NASA scientists have detected the first signs that tropical rainfall is on the rise with the longest and most complete data record available. view more (2007-08-28)
Panama butterfly migrations linked to El Niño, climate change
A high-speed chase across the Panama Canal in a Boston Whaler may sound like the beginning of another James Bond film-but the protagonist of this story brandishes a butterfly net and studies the effects of climate change on insect migrations at the Smithsonian Tropical Research Institute. view more (2009-10-06)
Smithsonian perspective: Biodiversity in a warmer world
Will climate change exceed life's ability to respond? Biodiversity in a Warmer World, published in the Oct. 10, 2008 issue of the journal, Science, illustrates that cross-disciplinary research fostered by the Smithsonian Tropical Research Institute in Panama clearly informs this urgent debate. view more (2008-10-10)
Tropical forest seed banks: a blast from the past
Seeds of some tree species in the Panamanian tropical forest can survive for more than 30 years before germinating. view more (2009-04-02)
NASA Researchers Studying Tropical Cyclones
NASA hurricane researchers are deploying to Costa Rica next month to investigate the birthplace of eastern Pacific tropical cyclones. They will be searching for clues that could lead to a greater understanding and better predictability of one of the world's most significant weather events - the hurricane. view more (2005-06-24)
Substantial costs and underreporting of dengue fever, concerns about blood supply face US
Dengue fever, known as "breakbone fever" because of the excruciating back and joint pain that accompanies this infectious disease, is a growing public health threat for people living in tropical countries, as well as travelers to destinations such as Thailand, Brazil and Puerto Rico. view more (2007-10-17)
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