Spatial distribution of floating marine debris in offshore continental Portuguese waters
| Autor: | Bruno Panta-Ferreira, Hélder Araújo, Flávia Alves, Jorge Bastos-Santos, José Vingada, Sara Sá, Virginia Duro, Marisa Ferreira, Lídia Nicolau, Catarina Eira |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
Fishing Fisheries 010501 environmental sciences Aquatic Science Oceanography Spatial distribution 01 natural sciences Abundance (ecology) Marine debris Environmental monitoring Water Pollutants 14. Life underwater 0105 earth and related environmental sciences Waste Products Distance sampling Portugal Ecology 010604 marine biology & hydrobiology Water Pollution Wood Pollution language.human_language Fishery language Polystyrenes Environmental science Submarine pipeline Portuguese Plastics Environmental Monitoring |
| Zdroj: | Marine Pollution Bulletin. 104:269-278 |
| ISSN: | 0025-326X |
| DOI: | 10.1016/j.marpolbul.2016.01.011 |
| Popis: | This study presents data on abundance and density of macro-floating marine debris (FMD), including their composition, spatial distribution and potential sources off continental Portugal. FMD were assessed by shipboard visual surveys covering ±252,833 km(2) until the 220 nm limit. The FMD average density was 2.98 items/km(2) and abundance amounted to 752,740 items. Unidentified plastics constitute the major bulk of FMD (density=0.46 items/km(2); abundance=117,390 items), followed by styrofoam, derelict or lost materials from fisheries, paper/cardboard and wood material. The North sector of the area presents higher FMD diversity and abundances, probably as a result of the high number of navigation corridors and fisheries operating in that sector. Most FMD originate from local sources, namely discharges from vessels and derelict material from fisheries. Considering the identifiable items, cables and fishing lines were the only fishing related items among the top ten FMD items in Portuguese offshore waters. |
| Databáze: | OpenAIRE |
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