Benthic Invertebrates Abundance and Trophic Links in the Coastal Zone during Cladophora Blooms

The green macroalga Cladophora glomerata, a species typical of brackish water, predominates in most coastal areas estuarine ecosystems. present study aimed to determine the current ecological conditions Neva estuary (Baltic Sea) when subjected eutrophication and summer bloom. Macroalgae bloom can result temporary unfavorable (oxygen depletion pollution) for invertebrates during macroalgae decomposition, its contribution autochthonous benthic food web remains unclear. We evaluated biomass abundance composition macro- meiobenthic traced trophic links area Some grazing or omnivorous consumers (nematodes, gastropods, amphipods, insect larvae) reached high Cladophora-dominated community. tracing sources chain community (macrophytes-grazers-omnivores) were elucidated using dual δ13C δ15N stable isotope analysis. results showed that organic derived from at various stages might contribute notably (up 89%) web, supporting production consumers.