engleski

15N signal of Aplysina aerophoba as a tracer of anthropogenic nitrogen in the Murter Sea and Pirovac Bay (Central Adriatic)

Stable nitrogen isotopes were used to study the environmental impact of sewage-discharge and fish-farmin-derived nitrogen in the Murter Sea and in the semi-enclosed Pirovac Bay (Central Adriatic). The results suggested that the effluents from the septic systems of Murter Island and the coastal part of Pirovac Bay discharged into the adjacent coastal ecosystems, which together with the fish-farm-derived fecal material and the feed wastage affected the stable nitrogen isotopic composition of the marine sponge Aplysina aerophoba. Furthermore, the 15N signature of Aplysina aerophoba can be useful in tracing the untreated municipal and other sewage-derived nitrogen flow in marine coastal ecosystems and the dispersion of 15N loadings generated by the inflows from fish farms.

Aplysina aerophoba; municipal sewage; fish farming activities; nitrogen isotope composition; Murter Sea; Pirovac Bay; Central Adriatic

nije evidentirano