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J Fish Biol ; 89(1): 65-101, 2016 Jul.
Article in English | MEDLINE | ID: mdl-27401480

ABSTRACT

The remarkable fish diversity in the Caribbean rivers of north-western South America evolved under the influences of the dramatic environmental changes of neogene northern South America, including the Quechua Orogeny and Pleistocene climate oscillations. Although this region is not the richest in South America, endemism is very high. Fish assemblage structure is unique to each of the four aquatic systems identified (rivers, streams, floodplain lakes and reservoirs) and community dynamics are highly synchronized with the mono-modal or bi-modal flooding pulse of the rainy seasons. The highly seasonal multispecies fishery is based on migratory species. Freshwater fish conservation is a challenge for Colombian environmental institutions because the Caribbean trans-Andean basins are the focus of the economic development of Colombian society, so management measures must be directed to protect aquatic habitat and their connectivity. These two management strategies are the only way for helping fish species conservation and sustainable fisheries.


Subject(s)
Conservation of Natural Resources , Ecosystem , Fisheries/statistics & numerical data , Fishes , Rivers , Animal Migration , Animals , Colombia , Floods , Fresh Water , Reproduction , Seasons
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