Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 403961
Title Aggregation of ecological indicators for mapping aquatic nature quality : overview of existing methods and case studies
Author(s) Knotters, M.; Lahr, J.; Oosten-Siedlecka, A.M. van; Verdonschot, P.F.M.
Source Wageningen : Wettelijke Onderzoekstaken Natuur & Milieu (WOt-werkdocument 209) - 44
Department(s) SS - Soil Geography
CE - Molecular Ecology Ecotoxicology and Wildlife Management
CE - Freshwater Ecosystems
WOT Natuur & Milieu
Publication type Research report
Publication year 2010
Keyword(s) waterorganismen - biologische indicatoren - oppervlaktewater - stroomgebieden - natuurwaarde - ruimtelijke modellen - correlatie - zoetwaterecologie - nederland - aquatic organisms - biological indicators - surface water - watersheds - natural value - spatial models - correlation - freshwater ecology - netherlands
Categories Freshwater Ecology
Abstract Indicators for aquatic nature quality are calculated using ecological monitoring data from individual sampling stations. For reporting purposes, these results need to be aggregated and scaled up to higher levels (catchment area, country). This report provides an overview of different existing spatial aggregation methods for this purpose, including an evaluation of their suitability for aquatic ecological indicators. So-called „model-based„ methods, consisting of some sort of „kriging¿ step followed by calculation of the arithmetic mean, appeared to be the most appropriate. Application of these methods to multimetric indicators of aquatic macroinvertebrates in two Dutch subcatchment areas confirmed their suitability. However, the methods that were used were based on aggregation (using kriging) over Euclidian (straight), distances. It is recommended to conduct further research on the suitability of interpolation through stream networks, i.e., through the waterways themselves.
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