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handle: 10261/48404
[ES]: El estuario del río Guadiana (suroeste de la península Ibérica) constituye un ecosistema de alto interés ecológico y económico. Es necesario el desarrollo de herramientas que nos permitan evaluar de forma rápida y eficaz los parámetros relacionados con la calidad del estuario, como biodiversidad, calidad del agua, contaminación, etc. El presente trabajo se centra específicamente en el uso de la aproximación geoquímica para la evaluación de la calidad de los sedimentos estuarinos. Los lípidos constituyen una fracción lábil de la materia orgánica que experimenta cambios en su composición como consecuencia de alteraciones en el ambiente y por ello constituyen una fuente importante de información medioambiental. Además, los lípidos se consideran buenos marcadores e informan acerca del estado de contaminación orgánica y salud/calidad ambiental de los sedimentos. El seguimiento de la composición lipídica en el tiempo nos puede dar una idea de posibles impactos o cambios inducidos por el hombre sobre la calidad ambiental del estuario.
[EN]: The estuary of the Guadiana River (South West Iberian Peninsula) represents an ecosystem with high ecological and economic interest. There is a need to develop tools in order to fast and effectively assess the environmental quality of the estuary i.e. biodiversity, water quality, pollution, etc. This work specifically focuses on the use of a geochemical proxy to assess the sediment quality of the estuary. Lipids are a labile organic matter fraction prone to undergo rapid and significant alterations in its components, is responsive to environmental shifts and therefore an important source of environmental information. Moreover, the lipids are considered to be good markers to inform about the status of organic contamination and the general health/quality of the sediments. Sediment lipids monitoring over time can be also used to monitor possible contamination episodes or human-induced changes in the quality of the estuary.
Proyecto “Monitorização e gestão ambiental dos sapais do estuário do Guadiana – Desenvolvimento da ferramenta (MEGASIG)” Interreg 3A: 5 Alentejo/Algarbe/Andalucía.
4 páginas, 2 figura, 1 tabla, 3 referencias.-- Presentado a la VII Reunión del Cuaternario Ibérico, celebrada del 5-9 de octubre 2009, en Faro, Portugal
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