Overview Main results Further results Publications Downloads Fame Group
   Basic tools Spatial methods Fides Method evaluation
  The objective of the basic tools section was to compile information on key issues for the method development and to define the basic principles for the FAME project. This involved including the status of discussions on WFD implementation in the FAME member countries. In early 2002, however, when the FAME project started, the integration and establishment for example of river typologies, the definition of reference conditions or monitoring was an ongoing process in most of the countries.
  • River types:
    According to the WFD, river types must be defined based on abiotic criteria. Within the FAME project it was agreed to develop, in a first step, a fish-based typology. In a subsequent step, abiotic factors as well as the thresholds relevant to discriminate fish assemblages across ecoregions and Europe were identified. The results are described in the section “Spatial methods”; details about the harmonisation and discussion are contained in the report about river typology.

  • Reference conditions and pre-classification of sites:
    According to the WFD, reference conditions represent sites with no or only minor human alterations of a water body and must be described for each river type identified. Thus, criteria relevant to show possible human alterations from a fish ecological point of view were selected. The 23 “pressure variables” finally chosen were used to identify reference sites and pre-classify sites by human pressures (“pressure status”). Due to data gaps, the final pre-classification was based on the main variables addressed in the WFD (hydrology, morphology, connectivity, nutrients, toxic substances/acidification). Details about the principles and the selection of variables can be found in the report about the definition of reference conditions as well as in the reports about the FAME methods (EFI and spatial methods).

  • Species classification:
    To be able to select and calculate metrics, fish species were classified into 13 ecological guilds, among them habitat, feeding, reproduction, migration or tolerance. Altogether, 42 criteria were used for the classification. Moreover, the status of all fish species as either native or alien in 41 main river regions (= hydrological units) was identified. Forty-five fish species were selected as sentinel species for age-length analyses. For details see report about species classification and species classification table.

  • Metrics selection and calculation:
    The final metrics list was defined based on the species classification. A total of about 450 potential metrics were calculated in order to test their response to different human pressures: 12 for overall composition, nearly 200 for functional guild characteristics (16 criteria variously divided among 6 ecological guilds: reproduction, migration, tolerance, feeding, habitat, longevity), and 5 metrics for each of the 45 sentinel species. Metrics refer either to absolute or relative number of species, to density or to biomass of species. Overall fish community composition and functional metrics were calculated separately for native and all species (i.e. native and alien species). For details see report about metrics selection.

  • Standardized sampling method:
    Electric fishing was the only common sampling method in all FAME countries. A standardized sampling procedure was defined for electric fishing in wadable as well as non-wadable rivers. The basis was the CEN standard “Fishing with electricity” (EN 14011). For details see report about the standardized sampling procedure.

©2005 Fame Group   Contact Disclaimer Overview Main results Further results Publications Downloads Fame Group