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Growth and mortality of introduced fish larvae in a newly restored urban river
Author(s) -
Bartl E.,
Keckeis H.
Publication year - 2004
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.0022-1112.2004.00412.x
Subject(s) - biology , floodplain , endangered species , larva , fish <actinopterygii> , population dynamics of fisheries , cyprinidae , fishery , abundance (ecology) , population , ichthyoplankton , zoology , ecology , habitat , demography , sociology
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.