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Temporal changes of a macrobenthic assemblage in Evros Delta (North Aegean Sea)
Author(s) -
Gouvis N.,
Kevrekidis T.,
Koukouras A.
Publication year - 1997
Publication title -
internationale revue der gesamten hydrobiologie und hydrographie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.524
H-Index - 52
eISSN - 1522-2632
pISSN - 0020-9309
DOI - 10.1002/iroh.19970820109
Subject(s) - dominance (genetics) , species evenness , species richness , abundance (ecology) , salinity , biomass (ecology) , diversity index , delta , geography , relative species abundance , ecology , species diversity , fauna , environmental science , oceanography , biology , geology , biochemistry , gene , engineering , aerospace engineering
Monthly samples of the macrobenthic fauna were collected during February 1983‐February 1984, in a coastal lagoon of Evros Delta (North Aegean Sea), characterized by a very strong monthly fluctuation of temperature and salinity. 3 groups of samples were distinguished, the first including those taken during the spring months, the second, those taken during summer and autumn, and the third, the samples of winter months. All the above samples were homogeneous concerning number of species, species richness (Margálef index) and evenness, but not as far as species diversity (Shannon‐Wiener index) is concerned. The monthly variation of the total number of individuals and total biomass was significant, with highest values in spring, beginning of summer and autumn. Most months, polychaetes dominating, having the highest relative abundance and wet biomass. The 8 dominating species, which had a cumulative dominance of about 93%, showed strong monthly variation of abundance and biomass.