Food -> Fish
Removing One Fish Species is Enough to Severely Disturb Ecosystems Health

Johan Erlandsson  [2006-11-27  18:31]   #1807 Contradictory to earlier beliefs that other species compensate when single species are lost, the researchers in a study of a South American river discovered severe disturbance of the ecosystem when one specie was removed. The researchers ask for more research in this area and better enforcement of fishing laws.  http://ec.europa.eu/environment/integration/newsalert/pdf/38na2.pdf Eleonora Horn  [2007-03-09  19:16]   #1850 This is important to consider when we discuss the situation of the Baltic Sea. The brackish water (lower salinity than an ocean, higher than a lake) is a stress factor for both the freshwater species and the oceanic species, and therefore the species that manage to live in the brackish environment altogether are fewer compared to the ocean. This means fewer species with the same function/ at the same trophy level exists, which makes the ecosystem more vulnerable to changes like if we fish all of one species. Unfortunately, the link above seems not to work anymore, they must have moved it. Do you, Johan, by any chance remember the name of the report or the authors? Johan Erlandsson  [2007-03-12  23:32]   #1852 Thanks for letting me know Eleonora, heres a new link.  http://ec.europa.eu/environment/integration/research/newsalert/pdf/38na2.pdf

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