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Latest Stephen Hubbell Stories

2012-01-26 13:47:58

Competition is at the root of diversity in rainforests Ecologists are still arguing about the nature of the factors that determine the species composition of ecological communities. On the one hand, there are those who view interspecies competition as the key element. A second group of influential ecologists postulates that random fluctuations in population structure and rates of species dispersal play the dominant role, particularly in the biological communities found in species-rich...

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2011-05-19 06:00:00

A projected wave of extinctions of plant and animal species this century may have been overestimated because the most widely used scientific method can exaggerate losses by more than 160 percent, according to a study published Wednesday in the journal Nature. The scientists said that habitat destruction by humans is driving animal and plant species toward extinction at just half the pace as previously believed. They attribute the overestimation to flaws in the most popular scientific method,...

2011-05-18 16:31:38

However, researchers say, global extinction crisis remains very serious The most widely used methods for calculating species extinction rates are "fundamentally flawed" and overestimate extinction rates by as much as 160 percent, life scientists report May 19 in the journal Nature. However, while the problem of species extinction caused by habitat loss is not as dire as many conservationists and scientists had believed, the global extinction crisis is real, says Stephen Hubbell, a...

2005-11-30 17:48:01

Unspoken rules of existence in tropical rain forests mean no one species will take up too much space and squeeze others out, says new research conducted in part at the University of Alberta that shows how ecological communities regulate themselves. Dr. Fangliang He is part of a research team that studied fundamental questions plaguing scientists since Darwin's time: why are some species so common while others are rare? How do common and rare species interact? And how do hundreds, even...


Word of the Day
baudekin
  • A rich embroidered or brocaded silk fabric woven originally with a warp of gold thread.
'Baudekin' seems to be an alternative form of 'baldachin,' from the Italian 'Baldacco,' Baghdad, the city where the material was made.
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