ScienceDaily: Top Environment News |
| Jostling for position: Competition at the root of diversity in rainforests Posted: 26 Jan 2012 11:29 AM PST Another attractive theory falls foul of the facts. A census of trees in rainforests on three continents has confirmed that competition plays a central role in structuring communities. This contradicts the so-called neutral theory in ecology, which views random fluctuations as the decisive factor.  |
| Hurricane Katrina survivors struggle with mental health years later Posted: 26 Jan 2012 06:25 AM PST Survivors of Hurricane Katrina have struggled with poor mental health for years after the storm, according to a new study of low-income mothers in the New Orleans area.  |
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