Contemporary pollution of surface sediments from the Algarve shelf, Portugal. (March 2022)

• Record Type: Journal Article
• Authors: Bellanova, Piero; Feist, Lisa; Costa, Pedro J.M.; Orywol, Sarah; Reicherter, Klaus; Lehmkuhl, Frank; Schwarzbauer, Jan
• Is Part Of: Marine pollution bulletin. Volume 176(2022)
• Publication Date: 2022-03
• Subjects: Marine sediments -- Anthropogenic pollutants -- Marine pollution -- Grain size -- Heavy metal pollution; Marine pollution -- Periodicals; Marine Biology -- Periodicals; Water Pollution -- Periodicals; Mer -- Pollution -- Périodiques; Publications périodiques; Pollution des mers; Lutte antipollution; Electronic journals; 363.7394
• DOI: 10.1016/j.marpolbul.2022.113410
• Languages: English
• ISSNs: 0025-326X

Abstract

Abstract: The present-day human footprint is traceable in all environments. Growing urban centers, tourism, agricultural and industrial activities in combination with fishery, aquacultures and intense naval traffic, result in a large output of pollutants onto coastal regions. The Algarve shelf (Portugal) is one exemplary highly affected coastal system. With this study the contemporary pollution was followed in eighteen offshore surface sediment samples. Heavy metals (e.g., Cr, Pb, Cu, Hg) and organic contaminants, such as linear alkylbenzenes, dichlorodiphenyltrichloroethane metabolites, polycyclic aromatic hydrocarbons, and hopanes, have been identified and quantified, that pose hazardous effects on the marine environment and biota. This study correlates spatial distribution patterns with the pollutant composition, potential sources and pathways, each sample's grain size, and local influences, such as discharging river systems and ocean currents. This study presents a blueprint-study that allows the methodological adaption to new shelf systems with regionally different ocean current-driven distribution patterns of anthropogenic pollutants. Highlights: Blueprint-study of the contemporary pollution and pollutant pathways in shelf systems Algarve shelf is polluted by inorganic heavy metals (Pb, Cr, Ni) and organic contaminants (PAHs, LABs, DDX) Spatial concentration linked to sources, river discharge, ocean currents and accumulation-control factors Difference in distribution and accumulation mechanisms for heavy metals and organic pollutants