Abstract
The results of a joint Russian-Finnish investigation on zooplankton in Lake Ladoga are presented, and a comparison is made between two sampling techniques, tube sampler and plankton net, and between two counting methods. The precision of subsampling and sampling is further discussed on the basis of zooplankton data gathered in Lake Saimaa, Finland. The comparison clearly indicates that a tube sampler is required for reliable sampling of small-sized animals, while a plankton net saves time and is a more economical sampler for large, rare or active animals. The comparison between the results obtained by Finnish and Russian workers, using different counting procedures, shows that the main groups of crustacean zooplankton are similarly counted and identified in the two laboratories.
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© 1996 Kluwer Academic Publishers
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Karjalainen, J., Rahkola, M., Viljanen, M., Andronikova, I.N., Avinskii, V.A. (1996). Comparison of methods used in zooplankton sampling and counting in the joint Russian-Finnish evaluation of the trophic state of Lake Ladoga. In: Simola, H., Viljanen, M., Slepukhina, T., Murthy, R. (eds) The First International Lake Ladoga Symposium. Developments in Hydrobiology, vol 113. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-1655-5_39
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DOI: https://doi.org/10.1007/978-94-009-1655-5_39
Publisher Name: Springer, Dordrecht
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