| Title: | Assessment of resuspended matter and redistribution of macronutrient elements produced by boat disturbance in a eutrophic lagoon |
| Author(s): | Lenzi M; Finoia MG; Gennaro P; Mercatali I; Persia E; Solari J; Porrello S; |
| Address: | "Lagoon Ecology and Aquaculture Laboratory (LEALab), OPL s.r.l., via G. Leopardi 9, 58015 Orbetello, Italy. lealab2@hotmail.com" |
| DOI: | 10.1016/j.jenvman.2013.03.002 |
| ISSN/ISBN: | 1095-8630 (Electronic) 0301-4797 (Linking) |
| Abstract: | "Harvesting of macroalgae by specially equipped boats in a shallow eutrophic lagoon produces evident sediment resuspension. To outline the environmental effects of this disturbance, we examined the quantity of fall-out and the distances travelled by sediment and macronutrients from the source of boat disturbance. Resuspended sediment fall-out (RSFO) was trapped at different distances from the boat path to determine total dry weight, total nitrogen (TN), total carbon (TC), total organic carbon (TOC), total sulphur (TS) and total phosphorus (TP). The data was analysed by principal components analysis (PCA) and linear discriminant analysis (LDA) on PCA factors. Fall-out of C, N, S and P from the plume of resuspended sediment indicated significant re-arrangement of these nutrients: RSFO dry weight and S content decreased with distance from the boat path, whereas TP increased and was the variable responsible for most discrimination at 100 m. The mass of resuspended matter was relatively large, indicating that the boats considerably reshuffle lagoon sediment" |
| Keywords: | Environmental Monitoring/*methods Eutrophication Nitrogen/*analysis Phosphorus/*analysis Seawater *Ships Sulfur/*analysis; |
| Notes: | "MedlineLenzi, Mauro Finoia, Maria Grazia Gennaro, Paola Mercatali, Isabel Persia, Emma Solari, Jacopo Porrello, Salvatore eng England 2013/04/09 J Environ Manage. 2013 Jul 15; 123:8-13. doi: 10.1016/j.jenvman.2013.03.002. Epub 2013 Apr 9" |
