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Ecological Value of Exotic Water Plants Equals that of Indigenous Species
When it comes to their role in aquatic ecosystems, exotic water plants are generally no different than indigenous species. In fact, they can be an asset. That doesn't mean all exotic species should be given free rein. But they can be managed more effectively if you focus on their properties and not their place of origin. Ecologist Bart Grutters (NIOO-KNAW) will defend his PhD thesis research.

Exotic species - plants and animals from other parts of the world - tend to get a bad press. But a solid ecological, scientific underpinning is often lacking. With his thesis research, Bart Grutters redresses the balance: "If you look at the role of exotic water plants in an ecosystem, you won't find any significant differences compared to indigenous species."




 
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Gender-bending Chemicals in Water Supply - Researchers from the University of Calgary sampled populations of longnose dace, a silvery minnow, in Alberta’s Oldman and Bow Rivers. The Bow River flows through downtown Calgary and supplies its drinking water. Samples were taken back to the lab and dissected for further analysis and biologists then noticed that the random catch was overwhelmingly female.


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