Studies on succession in the Abra ovata community inhabiting the flooded area in Sulak Bay, Caspian Sea, that have been carried out since the mid-1980s were continued. It has been found that the pioneer species A. ovata and Cerastoderma glaucum are still dominant in the structure of this community, determining the course of its succession. Its second stage does not fit the framework of the models characteristic of benthic communities. On the one hand, it conforms to the tolerance model: the pioneer species A. ovata, despite its dominance at all stages of succession, has not prevented the spread of other numerous colonizers of the same trophic level. On the other hand, it conforms to the facilitation model: due to their abundance, the pioneer species as grazing species have attracted organisms of a higher trophic level, namely, sturgeons.
Russian Journal of Ecology – Springer Journals
Published: Oct 18, 2004
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