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Growth and mortality of introduced fish larvae in a newly restored urban river

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The potential of a newly restored river as a nursery for endangered rheophilic fish species was estimated by introducing a population of individually marked larvae of nase Chondrostoma nasus into two river sections differing in river morphology and hydrological conditions. After 12 months, clear differences in fish abundance and fish size were observed: in the braided floodplain section C. nasus were more abundant and larger in size than in the straight river channel section. Total mortality rates over the whole investigation period did not differ between the two sections.

Document Type: Regular Paper


Publication date: 2004-06-01

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