Table 6.

Final selection of metrics per river type (HWS = head water streams, MGR = medium gradient rivers, LLR = lowland rivers, MES = Mediterranean streams): Associated metric type (Type) bio = biodiversity, hab = habitat, troph = trophic level, wq = water quality; expected reaction under pressure (Reaction) incr = increasing, decr = decreasing; ** indicates a significant difference between unimpacted and impacted conditions in general (p.gen); significant pressure specific responses (p.spec) related to W = water quality pressure, HMC = hydromorphological pressure including connectivity, HMWC = combination of W + HMC. In bold: metrics reacting either to W or to HMC.

Metric	Type	Reaction	River type
			HWS		MGR		LLR		MES
			P.gen	P.spec	P.gen	P.spec	P.gen	P.spec	P.gen	P.spec
WQgen_INTOL_dens	wq	decr	**	HMC, W, HMWC			**	W	**	HMC, W, HMWC
WQO2_O2INTOL_biom	wq	decr	**	W, HMWC
HabSp_RHPAR_dens	hab	decr	**	HMC, W, HMWC
WQO2_O2INTOL_dens	wq	decr	**	HMC, W					**	xxx
WQgen_INTOL_perc_nsp	wq	decr	**	HMC, W, HMWC
Nsp_all	bio	incr	**	HMC, W, HMWC
WQgen_TOL_biom	wq	incr					**	HMWC
HTOL_HTOL_perc_biom	hab	incr					**	HMWC
WQgen_INTOL_perc_dens	wq	decr					**	W, HMWC	**	HMC, W, HMWC
Atroph_PISC_perc_nsp	troph	decr					**	HMC, HMWC
WQO2_O2TOL_perc_nsp	wq	incr					**	HMWC
Atroph_OMNI_perc_biom	troph	incr					**	HMWC
WQgen_TOL_perc_dens	wq	incr			**	HMWC			**	HMC, HMWC
WQgen_INTOL_biom	wq	decr							**	HMWC
WQgen_TOL_nsp	wq	incr			**	HMWC			**	HMC, HMWC
WQO2_O2INTOL_perc_nsp	wq	decr							**	HMWC
Atroph_OMNI_perc_nsp	troph	incr							**	HMC, HMWC