|
|||||
|
|
Assessment of nutrient limitation in Rijeka Bay, NE Adriatic Sea, using miniaturized bioassay |
|
| Authors: | Darija Vuki? Lu&scaron i?,Janja Horvati?,Damir Vili?i?,Tamara ?akovac |
| Affiliation: | a Teaching Institute of Public Health, Department of Ecology, Krešimirova 52 a, 51 000 Rijeka, Croatia b Department of Biology, Josip Juraj Strossmayer University, Gajev trg 6, 31 000 Osijek, Croatia c Division of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10 000 Zagreb, Croatia d Ru?er Boškovi? Institute, Center for Marine Research, G. Paliaga 5, 52210 Rovinj, Croatia |
| Abstract: | In this paper we consider the trophic state and ambient nutrient limitation by the trophic index (TRIX) calculation and nutrient enrichment bioassay using the diatom Phaeodactylum tricornutum at two differently eutrophicated NE coastal Adriatic locations (in the Rijeka Bay area). The first station in Rijeka Port had significantly higher concentrations of dissolved inorganic nutrients and TRIX indices (up to 7.53) than the station near Opatija. The DIN/TP ratios in Rijeka Port were lower (11.03 to 44.47) than those in Opatija (38.67 to 82.00), indicating P limitation in Opatija. The nutrient enrichment bioassays revealed P as the key limiting nutrient for the diatom growth at both sites. In addition, silica limitation was found in all water samples with the exception of the surface water samples in Rijeka Port. Nitrogen limitation was rarely evident. |
| Keywords: | Adriatic Sea Bioassay Chlorophyll-a DIN:TP ratio Limiting nutrients Trophic index |
| 本文献已被 ScienceDirect 等数据库收录！ | |