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Title: New methodology for analysing and increasing the cost-efficiency of environmental monitoring networks
Authors: Abramic, Andrej 
Martínez-Alzamora, Nieves
González del Rio Rams, Julio
Barrachina, Teresa
Polo, José Ferrer
UNESCO Clasification: 2510 Oceanografía
Keywords: Environmental monitoring
Water Framework Directive
Coastal waters
Efficiency of a monitoring network
Inter-observer variability
Issue Date: 2014
Journal: Marine Pollution Bulletin 
Abstract: This study focuses on the coastal monitoring network established in the scope of WFD implementation. The objective of this network was to provide an ecological assessment of Valencian coastal waters. After three years, sufficient data had been collected to enable us to analyse and explore ways to increase the network’s efficiency. A methodology was developed to select the best subset of sampling stations to be surveyed. This method was approached from the perspective of an inter-observer variability problem. In order to compare the concordance between the k-observers and the reference observer, two measures were considered: euclidean distance, and interclass correlation coefficient. The obtained results confirm that the current network can be reduced by over 50% and still guarantee accurate results. This methodology (not limited by indicators, geographically, or by type of water body) could be applied to different environmental monitoring networks and could significantly decrease the efforts and costs required by the WFD.
ISSN: 0025-326X
DOI: 10.1016/j.marpolbul.2014.07.029
Source: Marine Pollution Bulletin [ISSN 0025-326X], v. 86 (1-2), p. 161-173
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