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Trawl survey station network in the Rybinsk Reservoir: (1–9) station nos.  

Trawl survey station network in the Rybinsk Reservoir: (1–9) station nos.  

Source publication
Article
Full-text available
The density of individual species and the total density of pelagic fishes at stations in the Rybinsk Reservoir was evaluated in 1991, 1994, 2006, and 2007. A reliable difference was found to exist between the total fish density in pelagic areas in the 1990s and the 2000s. The density of many species (smelt, zander, perch, and zope) showed considera...

Contexts in source publication

Context 1
... materials of this study were the results of trawl catches taken in individual parts of the Rybinsk Reserr voir (inundated channels of former rivers) in August- September 1991September , 1994September , 2006, and 2007. The trawling was carried out in the daytime over a predetermined station network (Fig. ...
Context 2
... catches were sorted by species and counted, the fishes were measured (body length to the end of the scale cover) and weighed [12]. The total of 55 trawling catches where taken at 9 stations (Fig. ...

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