The composition and distribution of the macrobenthic molluscs in Evros Delta (North Aegean Sea) were investigated by quantitative sampling. The molluscan distribution shows a zonation mainly related to the degree of "confinement". Based on similarity in distribution among stations, 2 groups of speci
Temporal changes of a macrobenthic assemblage in Evros Delta (North Aegean Sea)
β Scribed by N. Gouvis; T. Kevrekidis; A. Koukouras
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 931 KB
- Volume
- 82
- Category
- Article
- ISSN
- 1434-2944
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β¦ Synopsis
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 (MARGALEF 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.
π SIMILAR VOLUMES
The composition and distribution of the macrobenthic polychaete fauna in the Evros Delta (North Aegean Sea) have been investigated by means of 4 replicate quantitative samples collected at 35 sites. 10 species were found and, in additional qualitative samples, the sedentary species Ficopomurus enigm
## Abstract Monthly samples of __Abra ovata__ were collected during February 1983βJanuary 1984 in the Evros Delta (N. Aegean Sea). Population density (mean annual value = 2407.5 ind Β· m^β2^) was characterized by seasonal variation. An analysis of the length frequency distributions shows that one an