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Avian Use of Purple Loosestrife Dominated Habitat Relative to Other Vegetation Types in a Lake Huron Wetland Complex

Table 4


TABLE 4. Mean avian density (no./ha) ± SE, avian diversity (Shannon-Weaver) ± SE, and number of second and third period plots by (n) vegetation type in Saginaw Bay wetlands, 1994-1995.
Vegetation typea nb Densityc Diversityc
SS 30 51.33 ± 3.4 A 1.05 ± 0.08 A
WM/SS 19 38.95 ± 4.3 BC 0.63 ± 0.10 B
WM/SS/LS 13 44.62 ± 5.2 ABC 0.59 ± 0.12 B
WM/LS 12 49.17 ± 5.4 AB 0.22 ± 0.12 C
WM 21 39.52 ± 4.1 BC 0.62 ± 0.09 B
IC 23 41.74 ± 3.9 ABC 0.74 ± 0.09 B
CC 51 36.27 ± 2.6 C 0.56 ± 0.06 B
CB 20 0.50 ± 4.2 D 0 C
a Vegetation types: SS = scrub-shrub, WM/SS = wet meadow/scrub-shrub, WM/SS/LS = wet meadow/scrub-shrub/loosestrife, WM/LS = wet meadow/loosestrife, WM = wet meadow, IC = inland cattail, CC = coastal cattail, CB = coastal bulrush.
b Excludes early period surveys because of missing data.
c Means with columns followed by the same letter do not differ (P > 0.05) as determined by ANOVA and Fisher's least significant difference.

Previous Section -- Table 3 -- Number and percent of plots found in Saginaw Bay wetlands.
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Next Section -- Table 5 -- Mean density of the observed bird species by vegetation in Saginaw Bay wetlands.

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