How do salinity and heavy metal contamination affect Salicornia ramosissima and the Cadmium accumulation capacity?

Detalhes bibliográficos
Autor(a) principal: Pedro, Carmen
Data de Publicação: 2011
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.8/594
Resumo: Dissertação de Mestrado em Biotecnologia dos Recursos Marinhos apresentada à ESTM - Escola Superior de Turismo e Tecnologia do Mar do Instituto Politécnico de Leiria
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spelling How do salinity and heavy metal contamination affect Salicornia ramosissima and the Cadmium accumulation capacity?PhytoremediationHalophytesHeavy metalsCadmiumSalt marshDissertação de Mestrado em Biotecnologia dos Recursos Marinhos apresentada à ESTM - Escola Superior de Turismo e Tecnologia do Mar do Instituto Politécnico de LeiriaThe major aim of this study was to evaluate the capacity of Salicornia ramosissima, a halophyte present in Obidos lagoon (Portugal), on Cadmium (Cd) phytoremediation, when submitted to different salinities and Cd concentrations, for a month. Two Cd concentrations were used to evaluate this capacity and, consequently, the toxic effect of Cd on the plant development. The contamination levels were tested in different salinities (0, 5 and 10), taking into consideration the natural conditions that S. ramosissima is subject in its natural environment. The mortality registered in the end of the experiment, as the growth parameters measured (length and weight), did not showed significantly differences between the treatments, which means were not affected for the salinity or Cd concentrations, neither for the interaction of those two stress factors. However, length elongation and the variation of weight, observed in the end of the experiment, may have been induced by the increase of salinity and Cd concentration. A highest Cd accumulation was detected in the roots of S. ramosissima, compared with the aerial portion. The Cd accumulation in roots decreased with the increase of salinity and Cd concentration, even though statistically there were no significant differences between treatments. In all treatments, a biofilm was form, highlighting treatment salinity 0 x 50 μg Cd.l-1, where microorganisms and, eventually, organic matter (from the plant), suspended revealed a higher Cd amount relatively to the water initial Cd concentrations. The dissolved Cd concentration, detected in the final of the experiment, was in accordance with the initial contamination levels used in this study; however an increase was observed for some treatments, possible as a result of decomposition of organic matter and consequent release of Cd to the water. Salicornia ramosissima is a potential candidate for Cd phytoremediation at salinities close to 0, where development is maximum and, consequently, is Cd accumulation capacity. The optimization of phytoremediation processes by S. ramosissima could turn possible the use of this plant in freshwater ecosystems.IC-OnlinePedro, Carmen2012-10-19T17:41:34Z2011-12-272011-12-27T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10400.8/594enginfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-17T15:41:32Zoai:iconline.ipleiria.pt:10400.8/594Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:45:34.680967Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv How do salinity and heavy metal contamination affect Salicornia ramosissima and the Cadmium accumulation capacity?
title How do salinity and heavy metal contamination affect Salicornia ramosissima and the Cadmium accumulation capacity?
spellingShingle How do salinity and heavy metal contamination affect Salicornia ramosissima and the Cadmium accumulation capacity?
Pedro, Carmen
Phytoremediation
Halophytes
Heavy metals
Cadmium
Salt marsh
title_short How do salinity and heavy metal contamination affect Salicornia ramosissima and the Cadmium accumulation capacity?
title_full How do salinity and heavy metal contamination affect Salicornia ramosissima and the Cadmium accumulation capacity?
title_fullStr How do salinity and heavy metal contamination affect Salicornia ramosissima and the Cadmium accumulation capacity?
title_full_unstemmed How do salinity and heavy metal contamination affect Salicornia ramosissima and the Cadmium accumulation capacity?
title_sort How do salinity and heavy metal contamination affect Salicornia ramosissima and the Cadmium accumulation capacity?
author Pedro, Carmen
author_facet Pedro, Carmen
author_role author
dc.contributor.none.fl_str_mv IC-Online
dc.contributor.author.fl_str_mv Pedro, Carmen
dc.subject.por.fl_str_mv Phytoremediation
Halophytes
Heavy metals
Cadmium
Salt marsh
topic Phytoremediation
Halophytes
Heavy metals
Cadmium
Salt marsh
description Dissertação de Mestrado em Biotecnologia dos Recursos Marinhos apresentada à ESTM - Escola Superior de Turismo e Tecnologia do Mar do Instituto Politécnico de Leiria
publishDate 2011
dc.date.none.fl_str_mv 2011-12-27
2011-12-27T00:00:00Z
2012-10-19T17:41:34Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.8/594
url http://hdl.handle.net/10400.8/594
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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