| http://www.w3.org/ns/prov#value | - The reason is an observed serious population decline, estimated to be >80% over the last three generations, due to over-exploitation (frog leg consumption, by-catch in fishing nets), habitat degradation (water pollution, destruction of breeding grounds, i.e. tule reed beds), and the introduction of invasive, non-native fish species to Lake Titicaca (mainly trout that prey on tadpoles and adults).
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