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The Best of Both Worlds:Planning for Ecosystem Win-Wins

Sun, 16 Nov 2014 12:25:44 +0000

The normal and healthy function of ecosystems is not only of importance in conserving biodiversity, it is of utmost importance for human wellbeing as well. Ecosystems provide us with a wealth of valuable ecosystem services from food to clean water and fuel, without which our societies would crumble. However it is rare that only a […]

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Planning for Ecosystem Win-Wins
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Life Aquatic: Diversity and Endemism in Freshwater Ecosystems

Thu, 06 Nov 2014 11:22:07 +0000

Freshwater ecosystems are ecologically important, providing a home to hundreds of thousands of species and offering us vital ecosystem servies. However, many freshwater species are currently threatened by habitat loss, pollution, disease and invasive species. Recent research from GEE indicates that freshwater species are at greater risk of extinction than terrestrial species. Using data on […]

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Diversity and Endemism in Freshwater Ecosystems
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Handicaps, Honesty and VisibilityWhy Are Ornaments Always Exaggerated?

Thu, 23 Oct 2014 13:30:30 +0000

Sexual selection is a form of natural selection that favours traits that increase mating success, often at the expense of survival. It is responsible for a huge variety of characteristics and behaviours we observe in nature, and most conspicuously, sexual selection explains the elaborate ornaments such as the antlers of red deer and the tail […]

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Why Are Ornaments Always Exaggerated?
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PREDICTS Project: Land-Use Change Doesn’t Impact All Biodiversity Equally

Mon, 13 Oct 2014 09:17:53 +0000

Humans are destroying, degrading and depleting our tropical forests at an alarming rate. Every minute, an area of Amazonian rainforest equivalent to 50 football pitches is cleared of its trees, vegetation and wildlife. Across the globe, tropical and sub-tropical forests are being cut down to make way for expanding towns and cities, for agricultural land […]

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Calculated Risks: Foraging and Predator Avoidance in Rodents

Fri, 03 Oct 2014 10:07:08 +0000

Finding food is one of the most important tasks for any animal – most animal activity is focused on this job. But finding food usually involves some risks – leaving the safety of your burrow or nest to go out into a dangerous world full of predators, disease and natural hazards. Animals should therefore be […]

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Foraging and Predator Avoidance in Rodents
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Dr Anjali Goswami lead author in Royal Society Proceedings B

24 November 2010


Marsupial carnivores, including bizarre pouched lions, wolves, and sabretooths, were once as diverse in their appearance as their placental counterparts are today, according to new research.

Millions of years ago large marsupial carnivores dominated both Australasia and South America.  Today, the Tasmanian Devil is the largest marsupial carnivore left, and is on the brink of extinction. Why these large pouched predators have dwindled is a mystery, but one explanation is that they couldn’t compete with their placental counterparts, like ordinary lions and tigers, because of the constraints of marsupial development. 

Marsupial Sabretooth

Now, by looking at the skulls of living and  fossil marsupial and placental carnivores from around the world, scientists have shown that the diversity between species in marsupial carnivores was in fact slightly greater than it is in more familiar placental carnivores, even though there were fewer species overall.  The research is published today in the Proceedings of the Royal Society B.

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