Naslov
Distribution of phosphorus in sediments at the areas of different environmental status (Adriatic Sea, Croatia)
(Distribution of phosphorus in sediments at the areas of different environmental status (Adriatic Sea, Croatia)

Autori
Matijević, Slavica ; Bogner, Danijela ; Cvitković, Ivan ; Žuljević, Ante ; Despalatovic, Marija ; Kušpilić, Grozdan ; Grbec, Branka

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Skup
ECSA 56 Coastal systems in transition: From a 'natural' to an 'anthropogenically-modified' state

Mjesto i datum
Bremen, Njemačka, 04.09.2016. - 07.09.2016

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
phosphorus, sediment, Adriatic Sea, environmental status

Sažetak
In this paper we investigated the organic and inorganic P in sediments collected during the 2004-2014 period at fish farms, bays, estuaries, open sea areas, military harbors and nautical marinas to evaluate the environmental status impact on the P distribution in sediments. Granulometric composition, organic matter content and carbonate content as geochemical characteristic were also obtained. Environmental status indexes (CARLIT, that presents the state of coastal biocenosis of macroalgae ; TRIX, that is description of trophic state in the water column and LUSI index, that presents group of anthropogenic pressures in some area) were determined for certain locations. Total P determined for all investigated sediments was 16.0±12.8 μmol g-1 with highest concentrations obtained at fish farm sites. Higher portion of inorganic P (66%) in relation to organic P (34%) was found. Positive correlation was established between total P and sediment organic matter content as well as between organic P and organic matter. Negative correlation was obtained between organic P and carbonate content. These associations were in accordance to previous investigations of P and geochemical parameters in sediment. In sediments at fish farm sites, beside the organic P, inorganic P forms were examined (P in biogenic, authigenic and detrital apatite and P bound to iron oxides and hydroxides). Under the fish farm cages elevated portion of P in biogenic apatite and P bound to iron oxides and hydroxides was found. Obtained portions were attributed to fish farm impact. Association between total P in sediment and environmental indexes (CARLIT, TRIX and LUSI) was established that confirm thesis of the environmental state impact on P in sediment. These results present the basis of the potential implementation of P from the sediment, together with environmental indexes, in assessment of the ecological status of some marine environment.

Izvorni jezik
Engleski

Znanstvena područja
Geologija, Kemija

POVEZANOST RADA