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International Journal on Algae

Published 4 issues per year

ISSN Print: 1521-9429

ISSN Online: 1940-4328

SJR: 0.168 SNIP: 0.377 CiteScore™:: 0.6 H-Index: 11

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Express diagnostics of tropho-saprobic condition of coastal ecosystems using surface indices of benthic algae

Volume 2, Issue 1, 2000, pp. 12-21
DOI: 10.1615/InterJAlgae.v2.i1.20
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ABSTRACT

A possibility of applying a morpho-functional approach in estimating structural and functional organization of benthic algal communities with the aim of performing express diagnostics of tropho-saprobic condition of coastal ecosystems is discussed. In determining the tropho-saprobic category of ecosystems, indices of surface of phytocenoses, as well as of specific surface of populations have been used as quantitative criteria determining morpho-functional structure of the benthic vegetation. Classification of trophic levels of aquatic environment has been suggested. It is based on the following surface indices of benthic algae communities: xenotrophic < 5; oligotrophic 5−19, mesotrophic 20−40; eutrophic 41−70; polytrophic 71−120; hypertrophic >120 (units). Empirical values of the surface indices of phytobenthos for ecosystems with different trophic levels have been presented. Based on the morpho-functional structure of phytobenthos, the modern state of the coastal part of the Ukrainian shelf of the Black Sea may be characterized as mesotrophic-eutrophic.

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