The occurrence and ecology of the centric diatom Cyclotella choctawhatcheeana Prasad in a Croatian estuary (CROSBI ID 130717)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Burić, Zrinka ; Kiss, T. Keve ; Ács, Éva ; Viličić, Damir ; Caput Mihalić, Katarina ; Carić, Marina
engleski
The occurrence and ecology of the centric diatom Cyclotella choctawhatcheeana Prasad in a Croatian estuary
The centric diatom Cyclotella choctawhatcheeana was found for the first time in the Adriatic Sea. It develops dense populations in the highly stratified, oligotrophic, karstic estuary of the Zrmanja River (eastern Adriatic Sea, Croatia). Cyclotella choctawhacheeana contributed to the phytoplankton community in the estuary with high abundance of up to 2 x 10^6 cells L^-1 in April. Maximum abundance was found in the marine layer, below the halocline, at a salinity range between 13 and - 28, but it was able to develop over a very wide salinity range, indicating it is a eurihaline species. The maximum development appeared in the temperature range of 8 – 18^o C. It was present in 52% of samples on a yearly basis. The significant negative correlation with silica, nitrates and total inorganic nitrogen showed its preference for a marine, oligotrophic environment. We consider Cyclotella choctawhatcheeana to be a considerable constituent of the phytoplankton of the east Adriatic coast, one that prefers oligotrophic and brackish conditions
Cyclotella choctawhatcheeana; abundance; distribution; nutrients; oligotrophic; brackish; estuary; Zrmanja; Adriatic Sea
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