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Hydrobiological Journal
SJR: 0.217 SNIP: 0.575 CiteScore™: 0.24

ISSN Imprimir: 0018-8166
ISSN On-line: 1943-5991

Volumes:
Volume 55, 2019 Volume 54, 2018 Volume 53, 2017 Volume 52, 2016 Volume 51, 2015 Volume 50, 2014 Volume 49, 2013 Volume 48, 2012 Volume 47, 2011 Volume 46, 2010 Volume 45, 2009 Volume 44, 2008 Volume 43, 2007 Volume 42, 2006 Volume 41, 2005 Volume 40, 2004 Volume 39, 2003 Volume 38, 2002 Volume 37, 2001 Volume 36, 2000 Volume 35, 1999 Volume 34, 1998

Hydrobiological Journal

DOI: 10.1615/HydrobJ.v54.i2.30
pages 31-40

Evaluation of Primary Production Provision in Small Lake and its Trophic State

A. L. Rizhinashvili
St Petersburg Branch of Institute of Natural Science and Technics History RAS St Petersburg
O. B. Maksimova
State Research Institute of Lake and River Fishery St Petersburg, RF

RESUMO

The approach was developed to assess provision of primary production (phytoplankton) by nitrates in the small lakes. By example of a series of lakes of different trophic status the ratio was calculated between primary production, measured by traditional method of dark and light bottles, and production, obtained by conversion of nitrate concentration in water by Redfield stoichiometry, "nitrate production". It was supposed that three types of this ratio (below 1, equal to 1, above 1) indicate character of the producers' limitation in the ecosystem. It was revealed that within the same trophic type there are water bodies differently using their production potential depending on the nutrient load and, presumably, on the tension of phyto- and bacterioplankton relationship in their ecosystems.


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