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Mediterranean Coastal Lagoons: The Importance of Monitoring in Sediments the Biochemical Composition of Organic Matter

Author

Listed:
  • Monia Renzi

    (Bioscience Research Center, Via Aurelia Vecchia, 32, 58015 Orbetello (GR), Italy)

  • Francesca Provenza

    (Bioscience Research Center, Via Aurelia Vecchia, 32, 58015 Orbetello (GR), Italy)

  • Sara Pignattelli

    (Bioscience Research Center, Via Aurelia Vecchia, 32, 58015 Orbetello (GR), Italy)

  • Lucrezia Cilenti

    (Department of Lesina (FG), National Research Council—Institute for Biological Resources and Marine Biotechnologies (IRBIM), Via Pola 4, 71010 Lesina, Italy)

  • Antonietta Specchiulli

    (Department of Lesina (FG), National Research Council—Institute for Biological Resources and Marine Biotechnologies (IRBIM), Via Pola 4, 71010 Lesina, Italy)

  • Milva Pepi

    (Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Napoli, Italy)

Abstract

Transitional water ecosystems are targeted by the European Union (EU) Water Framework Directive (WFD, CE 2000/60) monitoring programs in coastal zones. Concerning sediments, activities performed for the WFD focus on a few variables concerning the biochemical composition of organic matter. Our research reports the effects of oxygen availability on the biochemical composition of organic matter in sediments to highlight levels of targeted variables in time and, according to the depth of sediment layer, both under oxygenated and anoxic conditions in a mesocosm study on sediment cores. Results provide evidence that tested factors of interest (i.e., disturbance type, oxygenic versus anoxic conditions; persistence time of disturbance, 0–14 days; penetration through sedimentary layers, 0–10 cm depth) are able to significantly affect the biochemical composition of organic matter in sediments. Large part of the variables considered in this study (total organic carbon (TOC), total phosphorous (TP), total sulphur (TS), Fe, carbohydrates (CHO), total proteins (PRT), biopolymeric carbon (BPC), chlorophyll-a (Chl- a ) are significantly affected and correlated to the oxygenation levels and could be good early indicators of important changes of environmental conditions. Monitoring activities performed under WFD guidelines and management strategies of Mediterranean coastal lagoon ecosystems shall include the biochemical composition of organic matter in sediment to provide an exhaustive picture of such dynamic ecosystems.

Suggested Citation

  • Monia Renzi & Francesca Provenza & Sara Pignattelli & Lucrezia Cilenti & Antonietta Specchiulli & Milva Pepi, 2019. "Mediterranean Coastal Lagoons: The Importance of Monitoring in Sediments the Biochemical Composition of Organic Matter," IJERPH, MDPI, vol. 16(18), pages 1-20, September.
    • Handle: RePEc:gam:jijerp:v:16:y:2019:i:18:p:3466-:d:268173
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    References listed on IDEAS

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    1. Giusti, Elisabetta & Marsili-Libelli, Stefano & Renzi, Monia & Focardi, Silvano, 2010. "Assessment of spatial distribution of submerged vegetation in the Orbetello lagoon by means of a mathematical model," Ecological Modelling, Elsevier, vol. 221(11), pages 1484-1493.
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