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Publication Type J
Authors Goncalves, C; Teixeira, C; Basto, MCP; Almeida, CMR
Author Full Name Goncalves, C.; Teixeira, C.; Basto, M. C. P.; Almeida, C. M. R.
Title PAHs levels in Portuguese estuaries and lagoons: Salt marsh plants as potential agents for the containment of PAHs contamination in sediments
Source REGIONAL STUDIES IN MARINE SCIENCE
Language English
Document Type Article
Author Keywords PAHs; Sediments; Salt marsh plants; Portuguese estuaries; Phytoremediation
Keywords Plus POLYCYCLIC AROMATIC-HYDROCARBONS; RUSH JUNCUS-MARITIMUS; SCIRPUS-MARITIMUS; SADO ESTUARY; SEA; DEGRADATION; REMEDIATION; PETROLEUM; PYRENE; SOIL
Abstract PAHs contamination in sediments is a subject of current concern since they constitute a secondary source of these pollutants for the water column. Remediation of contaminated sediments is a complex and costly process but salt marsh plants might be useful for hydrocarbons phytoremediation. With this aim, the levels of PAHs were evaluated in sediments of 5 estuaries/lagoons along the Atlantic (Lima, Cavado, Douro and Sado estuaries) and Mediterranean (Ria Formosa) Portuguese coasts, aiming to research the role of different salt marsh plants on PAHs retention/remediation, and whether they contribute for PAHs sequestration or mineralization. In each estuary, a non-colonized sediment and one or more colonized sediments (rhizosediments) were collected representing colonies of 7 salt marsh plants (Juncus maritimus, Phragmites australis, Triglochin striata, Halimione portulacoides, Scirpus maritimus, Spartina maritimaand Sarcocornia fruticosa). In general, PAHs levels were low (around 100 mu g kg(-1)), equivalent to background levels found in areas without significant anthropogenic activities. Nevertheless, one site in Sado estuary and one in Douro estuary revealed punctual sources mainly of 4- and 5-ring PAHs. Colonized sediments revealed higher capacity to sequester PAHs via the accumulation of higher contents of organic matter and thinner particulate fractions. J. maritimus, a widespread salt marsh plant, promoted the fixation of PAHs in rhizosediments, to a similar extent as the remaining plants. The exception was H. portulacoides which might have less accumulation potential of PAHs or their degradation in the vicinity of the roots is higher. This study demonstrated that salt marsh plants are a valuable element for the containment of PAH-contaminated sediments, which can then suffer biotic transformations or be available for remediation procedures. (C) 2016 Elsevier B.V. All rights reserved.
Author Address [Goncalves, C.; Teixeira, C.; Almeida, C. M. R.] Univ Porto, Interdisciplinary Ctr Marine & Environm Res CIMAR, Rua Bragas 289, P-4050123 Oporto, Portugal; [Basto, M. C. P.] Univ Porto, CIMAR CIIMAR, Rua Campo Alegre S-N, P-4169007 Oporto, Portugal; [Basto, M. C. P.] Univ Porto, Fac Ciencias, Rua Campo Alegre S-N, P-4169007 Oporto, Portugal
Reprint Address Goncalves, C (reprint author), Univ Porto, Interdisciplinary Ctr Marine & Environm Res CIMAR, Rua Bragas 289, P-4050123 Oporto, Portugal.
E-mail Address carlosmog@ff.up.pt
ResearcherID Number Teixeira, Catarina/B-1182-2013; Goncalves, Carlos/K-7895-2012
ORCID Number Teixeira, Catarina/0000-0003-3842-7133; Goncalves, Carlos/0000-0002-2569-7452; Almeida, C. Marisa/0000-0002-6836-0331; Basto, M. Clara/0000-0002-6872-6620
Funding Agency and Grant Number Project ECORISK [NORTE-07-0124-FEDER-000054]; North Portugal Regional Operational Programme (ON.2 - O Novo Norte), under the National Strategic Reference Framework (NSRF), through the European Regional Development Fund (ERDF)
Funding Text This work was partially funded by the Project ECORISK (reference NORTE-07-0124-FEDER-000054), co-financed by the North Portugal Regional Operational Programme (ON.2 - O Novo Norte), under the National Strategic Reference Framework (NSRF), through the European Regional Development Fund (ERDF). Authors acknowledge all colleagues that collected the samples of vegetated and non-vegetated sediments in the different estuaries/lagoons.
Cited Reference Count 40
Times Cited 3
Total Times Cited Count (WoS, BCI, and CSCD) 3
Publisher ELSEVIER SCIENCE BV
Publisher City AMSTERDAM
Publisher Address PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
ISSN 2352-4855
29-Character Source Abbreviation REG STUD MAR SCI
ISO Source Abbreviation Reg. Stud. Mar. Sci.
Publication Date SEP
Year Published 2016
Volume 7
Beginning Page 211
Ending Page 221
Digital Object Identifier (DOI) 10.1016/j.rsma.2016.05.004
Page Count 11
Web of Science Category Ecology; Marine & Freshwater Biology
Subject Category Environmental Sciences & Ecology; Marine & Freshwater Biology
Document Delivery Number FM1VN
Unique Article Identifier WOS:000414770500025
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