PHYSIOGRAPHIC EVALUATION OF SESSILE AND MOBILE FAUNA IN THE ODER ESTUARY
 
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Zakład Ekologii Morza i Ochrony Środowiska, Wydział Nauk o Żywności i Rybactwie, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie, ul. Kazimierza Królewicza 4, 71-550 Szczecin
Publication date: 2014-10-18
 
Inż. Ekolog. 2014; 36:137–153
 
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ABSTRACT
An attempt was made initial classification of invertebrate fauna habitats in the Oder estuary. Comprehensive analysis of differences in taxonomic composition and physicochemical factors permitted delineating three characteristic zones: brackish waters; fresh lotic lagoon waters; bay-lake waters. In the first zone of brackish waters, the epiphyte assemblages were characterized by the highest biocenotic index values, which is evidence of high biodiversity that is influenced by the occurrence of both brackish-water and freshwater species. The freshwater lotic lagoon sites were characterized by the greatest number of taxons, especially by representatives of Insecta and Gastropoda. Amphipoda also occurred abundantly, and were represented in particular by amphipod crustaceans of Ponto-Caspian origin including Dikerogammarus haemobaphes and Obesogammarus crassus. The bay-lake zone was characterized by the very high abundance of a small number of taxons resulting in the lowest biocenotic index values.