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More species in the tropics because species have been there longer
Why are there more species in the tropics than in the temperate regions of the globe? Many of the world's species live in the tropics (perhaps more than half), but the reason has been debated for more than 100 years.   view more (2006-11-02)

Why does species diversity vary so much?
The diversity of life varies predictably with climate and is greatest where it is warm and wet (the humid tropics). But the question "why" has puzzled biologists for over a century. In the December issue of Ecology Letters, Currie and colleagues examine three hypotheses about the origin... view more (2005-01-11)

Cold is hot in evolution — UBC researchers debunk belief species evolve faster in tropics
University of British Columbia researchers have discovered that contrary to common belief, species do not evolve faster in warmer climates.   view more (2007-03-16)

Exceptions prove rule of tropical importance in biodiversity
Even a group of shellfish that appear to violate the overarching pattern of global biodiversity actually follows the same biological rules as other marine organisms, confirming a general theory for the spread of life on Earth.   view more (2007-11-08)

Climate change did not influence prehistoric survival techniques in the tropics
The assumption that inhabitants of the tropics adapted their technology as a result of climate change was based in part on flakes from another Colombian site, at Tequendama. Many different types of stone tools have been found there and archaeologists assumed that each of them had a special... view more (1999-11-09)

Study: Rain forest insects eat no more tree species than temperate counterparts
A study initiated by University of Minnesota plant biologist George Weiblen has confirmed what biologists since Darwin have suspected-that the vast number of tree species in rain forests accounts for the equally vast number of plant-eating species of insects.   view more (2006-08-24)

Carbon dioxide role in past climate revealed
Researchers at the British Antarctic Survey (BAS) and the University of California, Santa Cruz have discovered that Earth's last great global warming period, 3 million years ago, may have been caused by levels of CO2 in the atmosphere similar to today's.   view more (2005-04-11)

Global warming will negatively impact tropical species
Global warming is likely to reduce the health of tropical species, scientists from UCLA and the University of Washington report May 6 in Proceedings of the National Academy of Sciences.   view more (2008-05-06)

Polar pecking order and biodiversity
New research into how biodiversity is generated and maintained in the seas surrounding hostile Polar Regions is reported in this month`s Proceedings of the Royal Society (Biological Sciences). British Antarctic Survey biologist David Barnes studied `battles` between rock-dwelling marine organisms... view more (2002-10-07)

Looming tropical disaster needs urgent action
A major review by University of Adelaide researchers shows that the world is losing the battle over tropical habitat loss with potentially disastrous implications for biodiversity and human well-being.   view more (2008-06-25)

Trees to offset the carbon footprint?
How effective are new trees in offsetting the carbon footprint? A new study suggests that the location of the new trees is an important factor when considering such carbon offset projects. Planting and preserving forests in the tropics is more likely to slow down global warming.   view more (2007-04-10)

Warming most evident at high latitudes, but greatest impact will be in tropics
The impact of global warming has become obvious in high latitude regions, including Alaska, Siberia and the Arctic, where melting ice and softening tundra are causing profound changes.   view more (2005-08-15)

The tropics play a more active role than was thought in controlling the Earth's climate
Researchers from the Universitat Aut√≤noma de Barcelona and Durham University (UK) have discovered that a million years ago, global climate changes occurred due to changes in tropical circulation in the Pacific similar to those caused by El Ni√ħo today.   view more (2005-10-12)

New public-private hybrid rice group aims to raise rice yields in the tropics
A new international research initiative, linking the private and public sectors for the first time and launched on November 9 at the 2007 Asian Seed Congress, aims to boost the research and development of hybrid rice for the tropics.   view more (2007-11-12)

Flu virus trots globe during off season
The influenza A virus does not lie dormant during summer but migrates globally and mixes with other viral strains before returning to the Northern Hemisphere as a genetically different virus, according to biologists who say the finding settles a key debate on what the virus does during the summer... view more (2007-09-21)

Drought limits tropical plant distributions, scientists at the Smithsonian report
Drought tolerance is a critical determinant of tropical plant distributions, researchers working at the Smithsonian Tropical Research Institute in Panama report in the journal Nature, May 3.   view more (2007-05-03)

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)

'Dodgy dossier' partly to blame for failure of war against malaria in the tropics
The war against malaria in tropical countries was fought and lost in the 20th Century on the basis of faulty intelligence, a 'dodgy dossier' which argued that the same methods used to tackle the disease in temperate countries would also work in the tropics.   view more (2008-09-11)

What makes life go at the tropics?
What causes tropical life to thrive: temperature, or sunlight? The answer is not necessarily "both." According to a study published online this week in PNAS Early Edition, the explosion of species at the tropics has much more to do with warmth than with light.   view more (2008-05-28)

New modeling study forecasts disappearance of existing climate zones
A new climate modeling study forecasts the complete disappearance of several existing climates in tropical highlands and regions near the poles, while large swaths of the tropics and subtropics may develop new climates unlike any seen today.   view more (2007-03-28)

Nitrogen pollution boosts plant growth in tropics by 20 percent
A study by UC Irvine ecologists finds that excess nitrogen in tropical forests boosts plant growth by an average of 20 percent, countering the belief that such forests would not respond to nitrogen pollution.   view more (2008-02-07)

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)

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)

Tropical rainforest nutrients linked to global carbon dioxide levels
Extra amounts of key nutrients in tropical rain forest soils cause them to release more carbon dioxide into the atmosphere, according to research conducted by scientists at the University of Colorado (CU)—Boulder.   view more (2006-06-21)

Scientists must offer solutions for conserving tropical forests in a rapidly changing world
As human populations and their impacts on the world increase, tropical forests are changing in many different ways. Forests are being cleared, burned, logged, fragmented, and overhunted and an unprecedented pace.   view more (2005-09-06)
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