Ecological status assessment of European lakes: a comparison of metrics for phytoplankton, macrophytes, benthic invertebrates and fish

Table 1 WISER data available for developing metrics responding to eutrophication

WP	BQE	Countries	# Water bodies
3.1	Phytoplankton	BE, CY, DE, DK, EE, ES, FI, FR, GR, HU, IE, IT, LT, LV, NL, NO, PL, PT, RO, SE, UK	2,063^a
3.2	Macrophytes	BE, EE, FI, IE, LT, LV, NL, NO, PL, RO, SE, UK	1,571
3.3	Benthic invertebrates	BE, DE, EE, LT, LV, NL, PL, UK	193
3.4	Fish	DE, DK, EE, ES, FI, FR, IE, IT, LT, LV, NO, PT, RO, SI, SE, UK	445

The data were split into four Workpackages (WP), each representing a single Biological Quality Element (BQE)
^aThe phytoplankton database also contains chlorophyll a data from 6,532 water bodies in Europe