Table 11.4. Regional Comp arison of Guild Structure of Forest Birds, for South Temperate Rainforest in Chile and Ar gentin a, North
Temperate Forests in the Midwest of North America, and Northwestern Forests of Ala ska and Canada (Codes: S = south temperate;
M = midwest; N = northwestern; B = broadleaf; C = conifer; D = deciduous; for compari son of broadleaf forests with conifer
forests, B includes D . Samples sizes are No (19), N
e (17), M
o (20), Me (3) , S8 (14)
,Se (2). Significant differences in pattern , and
interactions wered etermined bytwo-way ANOYA (see text) ; an
* indicates significant interaction . Data are shown when the direction
of difference is consistent (even when the interaction in significant or the overall ANOYA is not significant); dat a are not shown when
the inte raction is significant and the -direction of difference is not consistent . Nonsignificant differences in linear ranks, determined by
Tuk ey post-hoc test, are underlined;·the numbers accompanying the rankings are the average percents for each regional forest type.)
Part
A) By species.
Guild
Int eraction
Pattern
Rankings
Big-Tree Users
*a
Covered Nesters
no
Understory Birds
*
Aerial Fee ders
no
Canopy Seed Predators
no
Leaf-Gleaners
no
Leaf type
B > C
(25% > 15%)
B> C
(32% > 22%)
B > C
(15% > 6%)
C> B
(5% > 2%)
C > B
(28% > 23%)b
Location
M= S =N
(25% = 21% = 20%)
S >M=N
(47% >28% = 23%)
S=M>N
(16% = 15% > 8%)
S>N>M
(11% > 3% > 0.4%)
M=N>S
(33% = 29% > 9%)
S8 Mo No Me N
e Se
27 26 22 18 18 0%
S8 Se Me No Me N
e
50 29 29 25 24 22%
Se No N
e Me S8 M
o
55 53 48 39 30 27%
Mo S8 Se No Me N
e
19 15 12 11 7 6%
Se S8 Ne Me No M
o
- - -
12 115 2 2 0%
Me Mo Ne No Se So
42 31 28 26 13 9%
~
~
~
'" o
e
~
~
a
Interaction significant, but direct ion of difference consistent.
b
ANOVA not significant, but direction of difference consistent.