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19 septembre 2016

Comment les vers sauteurs asiatiques détruisent un écosystème [Sciences et Avenir - Animaux]

En quoi l’œuvre des vers asiatiques est-elle différente de celle de nos vers de terre européens ?

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19 septembre 2016

Chasing Ecological Interactions [PLOS Biology]

Basic research on biodiversity has concentrated on individual species—naming new species, studying distribution patterns, and analyzing their evolutionary relationships. Yet biodiversity is more than a collection of individual species ; it is the combination of biological entities and processes that support life on Earth. To understand biodiversity we must catalog it, but we must also assess the ways species interact with other species to provide functional support for the Tree of Life. Ecological interactions may be lost well before the species involved (...)

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19 septembre 2016

For ants, ’elite’ individuals are not always so effective [Phys]

We all know that social insects, such as ants, often work together to achieve effective responses to environmental challenges.
However, research by the University of Bristol, published in the Journal of Experimental Biology, has now uncovered that the contributions of different individuals within such groups vary.

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17 septembre 2016

Ancestral gene sequence reconstruction benchmarked via synthetic phylogeny [Phys]

For some 20 years, scientists have used algorithms to compute their way hundreds of millions of years back into the evolutionary past. Starting with present-day gene sequences, they perform what’s called ancestral sequence reconstruction (ASR) to determine past mutations and figure out the genes’ primal forerunners.

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17 septembre 2016

Mystery of colourful giant plants of the subantarctic solved [Phys]

The mystery of why so many plants on New Zealand’s otherwise bleak subantarctic islands have very large deeply coloured flowers and giant leaves has been solved by new University of Otago research.

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