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Abstract

Two spatial eutrophication indices of shallow marine ecosystems are proposed based on 3D hydrodynamic modelling data and satellite remote sensing data of ocean colour. The indices are derived in two systems characterised by different physical regimes: the Adriatic and the North Sea. The Physically Sensitive Area index (PSA) integrates the various supporting factors of eutrophication, i.e. the physical conditions that influence the primary production in the upper layer and the oxygen availability near the sea bottom. The EUTrophication RISK index (EUTRISK) represents the spatial distribution of potential hypoxia for a given month integrating the physical supporting factors and the flux of organic matter estimated from satellite-derived chlorophyll-a maps, with an oxygen budget estimated on a monthly basis. The PSA and EUTRISK indices identify three main types of eutrophied waters: 1) eutrophic and sensitive, 2) eutrophic and resistant and 3) mesotrophic and sensitive.

PSA and EUTRISK are innovative and harmonised tools for the assessment, monitoring and comparison of the eutrophication status of marine/coastal waters. They should assist policy makers in improving the ecological management of coastal marine waters, and the scientific community to identify the impacted areas and the main mechanisms involved.

Additional information

Authors: DRUON J-N, European Commission, Joint Research Centre, Institute for Environment and Sustainability, Inland and Marine Waters Unit, Ispra (IT);SCHRIMPF W, European Commission, Joint Research Centre, Institute for Environment and Sustainability, Inland and Marine Waters Unit, Ispra (IT);DOBRICIC S, European Commission, Joint Research Centre, Institute for Environment and Sustainability, Inland and Marine Waters Unit, Ispra (IT);STIPS A, European Commission, Joint Research Centre, Institute for Environment and Sustainability, Inland and Marine Waters Unit, Ispra (IT)
Bibliographic Reference: EUR 20419 EN (2002), pp.40. Free of charge
Availability: Available from European Commission, JRC Knowledge Management Unit, Ispra (IT) Tel: +39 033278 9843 or +39 033278 9864 Fax: +39 033278 9623 E-mail: jrc-publications-office@ec.europa.eu
Record Number: 200215521 / Last updated on: 2002-11-20
Category: PUBLICATION
Original language: en
Available languages: en