This work aims at developing a straightforward methodology for an in-depth evaluation of linkages between watershed land uses and lentic inland waters, such as lakes and lagoons, as a cause of water eutrophication. The proposed methodology integrates multi-resolution, multi-scale and multi-source geospatial data as Corine Land Cover (CLC), decadal agricultural census data, demographic and ground-based expert knowledge at basin level over relevant economic watersheds in Western Mediterranean island of Sardinia (Italy). The evaluation, carried out through geospatial and multivariate analysis, integrated factors such as land uses, habitat structure, biodiversity and degree of anthropization and eventually, summarized the whole in several thematic environmental sustainability indicators. The methodology underwent to a first order calibrationand validation that have foresee the use of data collected from 21 water bodies selected among several lakes and lagoons. Though preliminary, first results have given satisfactory assessment of inland water trophic state along investigated areas. Good correlation has indeed been observed among environmental sustainability indicators and concentration of total phosphorus, main limiting nutrient factor in investigated reservoirs, chlorophyll a and phytoplankton biomass. The watershed pressure evaluation assessed by means of such indicators, agreed with the trophic classification obtained from independent OECD probabilistic model developed the same series of data. The application of the proposed method in Sardinia demonstrated to be have high degree of up-scalability potential. Other tests are indeed planned to be implemented across other European areas for more robust and reliable validation.

A straightforward approach to assess the impact and linkage between land uses and trophic status of inland water ecosystems in Sardinia, Western Mediterranean / Padedda, Bachisio Mario; Sarria, Marco; Lugliè, Antonella Gesuina Laura; Sechi, Nicola; Buscarinu, Paola; Virdis, Tomasa; Virdis, Salvatore G. P.. - (2017). ((Intervento presentato al convegno XXIII Congresso AIOL. Funzionamento, alterazioni e recupero degli ecosistemi acquatici. Le scienze acquatiche per comprendere i cambiamenti e per renderne i cittadini consapevoli tenutosi a Cagliari nel 26-29 settembre 2017.

A straightforward approach to assess the impact and linkage between land uses and trophic status of inland water ecosystems in Sardinia, Western Mediterranean

PADEDDA, Bachisio Mario;SARRIA, Marco;LUGLIÈ, Antonella Gesuina Laura;SECHI, Nicola;
2017

Abstract

This work aims at developing a straightforward methodology for an in-depth evaluation of linkages between watershed land uses and lentic inland waters, such as lakes and lagoons, as a cause of water eutrophication. The proposed methodology integrates multi-resolution, multi-scale and multi-source geospatial data as Corine Land Cover (CLC), decadal agricultural census data, demographic and ground-based expert knowledge at basin level over relevant economic watersheds in Western Mediterranean island of Sardinia (Italy). The evaluation, carried out through geospatial and multivariate analysis, integrated factors such as land uses, habitat structure, biodiversity and degree of anthropization and eventually, summarized the whole in several thematic environmental sustainability indicators. The methodology underwent to a first order calibrationand validation that have foresee the use of data collected from 21 water bodies selected among several lakes and lagoons. Though preliminary, first results have given satisfactory assessment of inland water trophic state along investigated areas. Good correlation has indeed been observed among environmental sustainability indicators and concentration of total phosphorus, main limiting nutrient factor in investigated reservoirs, chlorophyll a and phytoplankton biomass. The watershed pressure evaluation assessed by means of such indicators, agreed with the trophic classification obtained from independent OECD probabilistic model developed the same series of data. The application of the proposed method in Sardinia demonstrated to be have high degree of up-scalability potential. Other tests are indeed planned to be implemented across other European areas for more robust and reliable validation.
A straightforward approach to assess the impact and linkage between land uses and trophic status of inland water ecosystems in Sardinia, Western Mediterranean / Padedda, Bachisio Mario; Sarria, Marco; Lugliè, Antonella Gesuina Laura; Sechi, Nicola; Buscarinu, Paola; Virdis, Tomasa; Virdis, Salvatore G. P.. - (2017). ((Intervento presentato al convegno XXIII Congresso AIOL. Funzionamento, alterazioni e recupero degli ecosistemi acquatici. Le scienze acquatiche per comprendere i cambiamenti e per renderne i cittadini consapevoli tenutosi a Cagliari nel 26-29 settembre 2017.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11388/196812
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