Do native white-clawed crayfish impact macroinvertebrate assemblages in Mediterranean limestone headwaters? | Knowledge and Management of Aquatic Ecosystems

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Table 3

Particular effects on abundance (left half) and biomass (right half) of the most important macroinvertebrate taxa according to sampling time (ST), crayfish density (CD) and their interactions in the present study.

Taxa	Log₁₀ (ind m⁻² + 1)						Log₁₀ (mg m⁻² + 1)

	ST		CD		ST × CD		ST		CD		ST × CD

	p	ɳ ²	p	η ²	p	η ²	p	η ²	p	η ²	p	η ²
Planariidae	NS		NS		**	0.433	NS		NS		NS
Hydrobiidae	NS		NS		*	0.414	*	0.291	NS		*	0.387
Gammaridae	NS		NS		*	0.436	NS		NS		NS
Hydracarina	*	0.283	*	0.663	NS		NS		NS		NS
Baetidae	NS		NS		NS		NS		NS		NS
Leuctridae	***	0.725	NS		NS		***	0.636	NS		NS
Elmidae	NS		NS		NS		*	0.287	NS		NS
Polycentropodidae	*	0.265	NS		*	0.360	NS		NS		**	0.461
Limnephilidae	**	0.345	NS		NS		NS		NS		NS
Brachycentridae	NS		NS		NS		***	0.469	NS		NS
Sericostomatidae	NS		NS		NS		NS		NS		NS
Chironomidae	***	0.621	NS		NS		**	0.374	NS		NS

Significant results are highlighted with * (p < 0.05), ** (p < 0.01) or *** (p < 0.001), and the corresponding magnitude of effect (η ²) expressed.

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