Assessment of surface sediment dynamics and response of benthic macrofauna assemblages in Boughrara Lagoon (SW Mediterranean Sea)
| Autor: | Mouldi Ibrahim, Ines Khedhri, Ahmed Afli, Abdelfattah Atoui, Lotfi Aleya |
|---|---|
| Přispěvatelé: | Institut National des Sciences et Technologies de la Mer [Salammbô] (INSTM), Laboratoire Chrono-environnement - CNRS - UBFC (UMR 6249) (LCE), Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Institut National des Sciences et Technologies de la Mer [Salammbô], Laboratoire Chrono-environnement ( LCE ), Université Bourgogne Franche-Comté ( UBFC ) -Centre National de la Recherche Scientifique ( CNRS ) -Université de Franche-Comté ( UFC ) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
Mediterranean climate General Decision Sciences Benthic macrofauna 010501 environmental sciences 01 natural sciences [ SDE ] Environmental Sciences Mediterranean sea Ecosystem 14. Life underwater Ecology Evolution Behavior and Systematics 0105 earth and related environmental sciences Trophic level Ecology 010604 marine biology & hydrobiology Detritivore Sediment Total organic matter Particle size Sediment dynamics Trophic structure Bioindication Habitat 13. Climate action Benthic zone [SDE]Environmental Sciences Environmental science |
| Zdroj: | Ecological Indicators Ecological Indicators, Elsevier, 2016, 70, pp.77-88. ⟨10.1016/j.ecolind.2016.06.011⟩ Ecological Indicators, Elsevier, 2016, 70, pp.77-88. 〈10.1016/j.ecolind.2016.06.011〉 |
| ISSN: | 1470-160X |
| DOI: | 10.1016/j.ecolind.2016.06.011⟩ |
| Popis: | International audience; A study was conducted in the spring of 2009, the winters of 2010 and 2013, and in the summer of 2012 at 13 stations in Boughrara Lagoon, Tunisia (southern Mediterranean). The country’s largest lagoon, it is considered to be an anthropogenically stressed area, though a major tourist centre—Djerba Island—is located along its northern shores. The lagoon bottoms were studied via analyses of grain size, surface sediment composition, total organic matter (TOM) and through the trophic and functional organisation of benthic macrofauna. The results indicate that the bottoms are composed of fine, medium or coarse sands and that sediment distribution is controlled by water movement. Estimation of TOM content revealed that the studied samples present both normal and imbalanced sediments. The structure and organisation of the lagoon’s benthic macrofauna are dominated by select deposit feeders and underwent significant changes during the period 2010–2013.Subjected for decades to increased pollution due to growing human activities in the surrounding area, Boughrara Lagoon now appears to be impacted by certain environmental/anthropogenic stressors, as indicated by the presence of pollution-tolerant bio-indicator species in the imbalanced area. The response of the lagoon ecosystem to changes in benthic sediment deposition provides a potential assessment tool for similar habitats elsewhere. |
| Databáze: | OpenAIRE |
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