some environmental factors effects on species composition, catch and cpue of kilkas in the caspian sea
نویسندگان
چکیده
this study evaluates changes in species composition, catch, and cpue of three species of kilkas in the caspian sea from 1961 to 2009. the effects of fluctuations in sea level rise and fall on the catch of kilka as well as the impacts of a recent invasion by mnemiopsis leidyi (ctenophora) were assessed in terms of species composition and cpue of kilkas in the iranian coastal region of the caspian sea. we found a negative correlation between long-term sea level changes and total catch (r2 = –0.56; p
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متن کاملCatch composition and fishing trend of kilka in Iranian part of the Caspian Sea
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متن کاملCatch composition and fishing trend of kilka in Iranian part of the Caspian Sea
Population structure of three kilka fishes (Clupeonella spp.), particularly anchovy kilka (C. engrauliformis), in Iranian waters of the Caspian Sea was surveyed in 2003. A total of 3230 biweekly samples were collected from commercially landed kilka at 3 stations in Mazandaran and Guilan provinces. Catch and effort statistics were obtained from the relevant organization. Results showed a great d...
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عنوان ژورنال:
ecopersiaناشر: tarbiat modares university
ISSN 2322-2700
دوره Volume 1
شماره 2 2011
کلمات کلیدی
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