Effects of different weed cutting methods on physical and hydromorphological conditions in lowland streams | Knowledge and Management of Aquatic Ecosystems

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Table 2

Key physical properties shown as mean, maximum, and minimum values for stream sites subjected to weed cutting by boat (deep), boat (shallow), scythe, and uncut.

Treatment group	Slope (‰)		Width (m)		Depth (m)		Catchment area (km²)		% Agriculture in catchment

	Average	Range	Average	Range	Average	Range	Average	Range	Average	Range
Boat (deep)	0.27	0.01–0.66	6.7	2.6–12.1	0.74^A	0.38–1.04	78.6^AB	11.1–31.3	58	35–74
Boat (shallow)	0.21	0.16–0.44	6.1	3.1–10.8	0.76^A	0.33–1.48	533.8^A	5.7–1818.3	62	22–80
Scythe	0.35	0.19–0.77	4.4	3.2–5.4	0.48^B	0.13–0.96	104.4^B	5.8–306.1	68	33–80
Uncut	0.41	0.20–0.75	4.9	3.1–15.4	0.34^B	0.12–0.96	44.0^B	2.3–377.4	68	43–84

Values on slope, width, and depth are based on measurements in August-September. Catchment area and % agriculture in catchment were quantified using GIS. Capital letters indicate significant differences (Bonferroni post hoc test, p < 0.05).

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