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2003002001003002001001.5 4.5 7.5 10.5 13.5 16.5 19.5 1.5 4.5 7.5 10.5 13.5 16.5 19.5 1.5 4.5 7.5 10.5 13.5 16.5 19.5
Body size (mm)Control VenlawBerwickPowderSuttonHealyAkatore BNorth ColLittle Kye BurnGermanBlackrockDempstersKye BurnStonyAkatore ACatlins0001000000FrequencyBroad CantonFigure 5.2Size frequency histograms of macroinvertebrates from 18 New Zealand stream sites. The
presence of brown trout (e.g. Blackrock) or native galaxiid fish (e.g. Healy) is indicated by
icons. Bar colour indicates land use: grey¼improved pasture, black¼native tussock
grass, white¼native podocarp forest, hatched¼exotic pine forest. Means are indicated
by solid lines flanked by dotted lines showing upper and lower quartiles.
BODY SIZE IN STREAMS 89