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http://hdl.handle.net/10773/6433
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DC Field | Value | Language |
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dc.contributor.author | Sardo, A. M. | pt |
dc.contributor.author | Soares, A. M. V. M. | pt |
dc.date.accessioned | 2012-02-15T16:34:18Z | - |
dc.date.issued | 2010 | - |
dc.identifier.issn | 0269-7491 | pt |
dc.identifier.uri | http://hdl.handle.net/10773/6433 | - |
dc.description.abstract | The Sao Domingos mine (Portugal) is, potentially, a good site for ecotoxicological studies, due to a pH and metal gradient of acid mine drainage. In this study, the toxicity of several mine sediments was evaluated using the aquatic oligochaete Lumbriculus variegatus as a test organism. Our hypothesis was that exposure to contaminated sediments would cause behavioural early warning responses in L variegatus. Five sites, with pH ranging from 2.5 to 6.5, and with associated metals, were investigated. The results showed poor sediment quality in most of the collected sediments and Fe, S and As were the dominant elements in the samples. High mortalities were observed, ranging from 32.6 to 100%, indicating severe contamination. The collected sediments did not support good L variegatus growth and significantly changed its behaviour. Early warning responses consisted of decreased locomotion and decreased peristaltic movements. A behaviour inhibition will affect the ecosystem balance by limiting the organisms' ability to avoid capture, which leads to a higher risk of predation. (C) 2009 Elsevier Ltd. All rights reserved. | pt |
dc.language.iso | eng | pt |
dc.publisher | Elsevier | pt |
dc.relation | FCT - POCTI/BSE/48131/2002 | pt |
dc.relation | FCT - SFRH/BD/16313/2004 | pt |
dc.rights | restrictedAccess | por |
dc.subject | Lumbriculus variegatus | pt |
dc.subject | Metal | pt |
dc.subject | Sediment | pt |
dc.subject | Behaviour | pt |
dc.subject | Acid mine drainage | pt |
dc.subject | Biomonitoring | pt |
dc.title | Can behavioural responses of Lumbriculus variegatus (Oligochaeta) assess sediment toxicity? A case study with sediments exposed to acid mine drainage | pt |
dc.type | article | pt |
dc.peerreviewed | yes | pt |
ua.distribution | international | pt |
degois.publication.firstPage | 636 | pt |
degois.publication.issue | 2 | pt |
degois.publication.issue | 2 | - |
degois.publication.lastPage | 640 | pt |
degois.publication.title | Environmental Pollution | pt |
degois.publication.volume | 158 | pt |
dc.date.embargo | 10000-01-01 | - |
dc.identifier.doi | 10.1016/j.envpol.2009.08.015 | * |
Appears in Collections: | CESAM - Artigos DBio - Artigos |
Files in This Item:
File | Description | Size | Format | |
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192_EnvPollution_2010_158_636.pdf | 350.96 kB | Adobe PDF |
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