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ARUSHA， Tanzania， Jan.27 (Xinhua) -- Drought has disrupted the normal migration wildebeests and zebras in northern Tanzania and forced them to give birth near the Tarangire River， an ecologist said Friday.


Tanzania is experiencing a drought after the short rainy season failed to deliver much-needed rainfall during recent months.


Derek Lee， an ecologist and scientist of the German-based Wild Nature Institute (WNI) said that the landscape across the Tarangire Ecosystem of northern Tanzania is now unseasonably dry， and where the ground would normally be a carpet of green， grasses and herbs are now in short supplies.


""Normally， at this time of year， the long-distance migratory wildlife like wildebeests and zebras would be on their calving grounds on the short-grass plains near Gelai and Simanjiro， far from the Tarangire River，"" the expert said in the report.


He， however， cited lack of water and food on the calving grounds has forced pregnant wildebeests and zebras to return early to Tarangire National Park to give birth， a disruption of their normal migratory behaviour with uncertain consequences.


According to the ecologist， the Tarangire Ecosystem is defined by the long-distance migration of wildebeests and zebras between their dry-season range along the Tarangire River in Tarangire National Park， and their wet-season calving grounds on the Northern Plains and Simanjiro Plains outside the park.


""The reason for the migration is that the greater nutritional content of the grasses on the calving grounds support lactation and calf growth， but the less nutritious grasses near the river do not. Wildlife migrations are an endangered phenomenon in the world and there are only three remaining wildebeest migrations in Africa.


""The Tarangire migration supports the Tarangire Ecosystem as an important source of wildlife tourism revenue for the country but the ecosystem is large. Cheap New Balance Cheap New Balance Black Cheap New Balance Mens Cheap Nike Air Presto Cheap Nike Presto Black Cheap Air Presto Womens Cheap Air Presto Mid Cheap Air Presto Yellow Wholesale Soccer Jerseys Cheap Adidas NHL Jerseys Online