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Jan
20
2010
Animals may have ridden ‘rafts’ to Madagascar
Viagra free samples over the counter, Strong ocean currents likely carried lemurs, rodents, and other small mammals to Madagascar millions of years ago, creating the rare and diverse ecosystems that exist today, scientists say.
The idea that new species reached Madagascar by rafting was proposed several decades ago. Small animals could have floated eastward from Africa on logs or mats of plants, kopen goedkope viagra free samples, Arizona AZ Ariz. , for instance. But critics have argued that the currents and winds are going in the wrong direction for such migrations, order viagra free samples pills. Generic viagra free samples, Instead, some scientists suggest, Washington WA Wash. , Viagra free samples no prescription, the animals may have walked across land bridges.
Not so fast, researchers say in Nature. The migrations began about 60 million years ago, ordering viagra free samples online, Viagra free samples online kopen, when the positions of Africa and Madagascar – and the flow of water between them – were considerably different. By modelling ocean and climate conditions, Ohio OH , Wyoming WY Wyo. , the team determined that strong currents were travelling east from Tanzania and Mozambique, which would have allowed animals to be borne to Madagascar's northern shores.
Rafts could have occasionally sped along at more than 20 centimeters per second, viagra free samples pills, Comprar viagra free samples baratos, making the trip in less than a month, the team estimates, For viagra free samples online. Cheap viagra free samples overnight delivery, And since the area has many tropical cyclones, storms could have set trees – and their unwitting inhabitants – afloat, pharmacie viagra free samples bon marché. Oklahoma OK Okla. , – Roberta Kwok
Source: Ali, J., Kjøp Discount viagra free samples, Massachusetts MA Mass. , & Huber, M, cheapest viagra free samples prices. Viagra free samples discount, (2010). Mammalian biodiversity on Madagascar controlled by ocean currents Nature DOI: 10.1038/nature08706
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Love that headline.
Thanks Eric!