دورية أكاديمية
Distribution of phosphorus species in below-cage sediments at the tuna farms in the middle Adriatic Sea (Croatia) ; Raspodjela oblika fosfora u sedimentima ispod uzgajališta tuna u srednjem Jadranu (Hrvatska)
| العنوان: | Distribution of phosphorus species in below-cage sediments at the tuna farms in the middle Adriatic Sea (Croatia) ; Raspodjela oblika fosfora u sedimentima ispod uzgajališta tuna u srednjem Jadranu (Hrvatska) |
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| المؤلفون: | MATIJEVIĆ, Slavica, BILIĆ, Jadranka, RIBIČIĆ, Deni, DUNATOV, Josipa |
| المصدر: | Acta Adriatica ; ISSN 0001-5113 (Print) ; ISSN 1846-0453 (Online) ; Volume 53 ; Issue 3 |
| بيانات النشر: | Institute of Oceanography and Fisheries |
| سنة النشر: | 2012 |
| المجموعة: | Hrčak - Portal of scientific journals of Croatia / Portal znanstvenih časopisa Republike Hrvatske |
| مصطلحات موضوعية: | Adriatic Sea, tuna farming, phosphorus, sediment, SEDEX method, Jadransko more, uzgajalište ribe, fosfor, SEDEX metoda |
| الوصف: | The phosphorus species in sediments from two tuna farms located in semi-enclosed bays at island of Brač, (Croatia), were examined. Investigations were performed at two sites inside the breeding area on each farm and at control site in adjacent bay with no tuna farm. Measurements included concentrations of organic phosphorus (OP) and inorganic P species: P in biogenic apatite (P-FD), P adsorbed onto iron-oxy/hydroxides (P-Fe), P in authigenic apatite (P-AUT) and P in detrital apatite (P-DET). Regarding the previous analyses of phosphorus in middle Adriatic sediment, additional extraction step in determination of OP was applied. Granulometric composition, organic matter (OM), organic carbon (C-ORG), total nitrogen (N-TOT), carbonate content (CA) and sediment redox potential were also determined to investigate interactions between P species and specified physico-chemical characteristics of sediment. Results proved total phosphorus (TP) sediment concentrations below the tuna cages enhanced up to 6 times in relation to the sites inside the farm area and to the control site. Sequential analyses of inorganic and organic P fractions indicated elevated concentrations of P-FD, P-AUT and P-Fe in below-cage sediments compared to other investigated sediments. Calculated portions of each fraction in the TP of all stations were as follows: P-FD (41%), P-Fe (32%), P-AUT (25%), P-ORG (1%) and P-DET (1%). In relation to previously obtained results for the middle Adriatic sediments under the anthropogenic impact, higher P-FD and P-AUT portion, as well as lower portion of P-ORG was revealed. Altered percentages between P-AUT and P-ORG are result of applying the different technique in sediment extraction regarding the earlier analyses. Sediment vertical profiles of P-FD, P-Fe and P-AUT pointed to elevated concentrations in surface layer (0-1cm) in below-cage sediments that can be assigned to fish farming influence. P-DET vertical profiles reflected the most inert nature of detrital apatite P species, while P-ORG profiles probably ... |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| العلاقة: | https://hrcak.srce.hr/97273Test |
| الإتاحة: | https://hrcak.srce.hr/97273Test https://hrcak.srce.hr/file/143151Test |
| حقوق: | info:eu-repo/semantics/openAccess ; Acta Adriatica is an open access journal. The content of the magazine is entirely free of charge. Users can copy and distribute the material and modify, transform or process the material as long as the source is quoted appropriately. (Possible limitation: Users should not use the material for commercial purposes. Possible limitation: Users should not modify, transform or process material unless they properly quote the source i.e. Acta Adriatica). |
| رقم الانضمام: | edsbas.57031597 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |