Geology Reference
In-Depth Information
Table 10.5. (cont.)
Species
USA
NGU
UKA
ULU
EUZ
MUF
RUN
NYP
Loveridge's Sunbird
.
loveridgeia
x
Moreau's Sunbird
.
moreauf
x
x
x
Rufous-winged Sunbird
.
nipennis
a
x
Thick-billed Seed-eater
Serinus burtoni
x
x
x
Oriole Finch
Linurgus olivaceus
x
x
x
x
x
Usambara Weaver
Ploceus nicollia
x
x
x
Red-faced Crimson-wing
Cptospiza reichenovii
x
x
x
x
x
x
x
x
Kenrick's Starling
Poeoptera kenricki
x
x
x
x
Waller's Chesnut-winged Starling
Onychognathus walleri
x
x
x
x
x
x
x
Sharpe's Starling
Cy nnyricinclus shapii
x
x
Note:
a
A taxon endemic to the East Coast Escarpment forests
(16
species).
b
A near-endemic species occurring in only a few localities outside the East Coast Escarpment.
Compared with montane forests elsewhere in Africa, the East Coast Escarpment forests have reasonably high
endemism (see Table
10.1)
but moderate species diversity. Table
10.4
gives some comparisons of species numbers
between certain forest areas (data taken from Miller
et al.,
1989).
Key: USA, Usambara; NGU, Nguru; UKA, Ukaguru; ULU, Uluguru; EUZ, East Uzungwa; MUF, Mufindi;
RUN, Mount Rungwe; NYP, Nyika Plateau.
In terms of species diversity, the East Coast
Escarpment forests are impoverished compared
with those in the Alberine Rift, on a par with
Cameroun and Central East Africa, and rich
compared with Ethiopia, South Malawi and
South of Zambezi (see Table 10.1).
in Tables 10.2 and 10.3. These include none of
the endemic species, though one near endemic,
the White-chested Alethe Alethe fu elleboni, is
ubiquitous through these areas.
A cluster analysis dendrogram of the eight
montane forest bird communities is presented in
Figure 10.3. The same methodology is employed
as for the analysis shown in Figure 10.1. The
impoverished Ukaguru community is one of the
most disinct species assemblages. The Usam-
baras are equally disinct, partly owing to their
large number of rare species, and also to a few
affinities with the Cenral East African forests,
notably the presence of Hartlaub's Turaco
Ta uraco hatlaubi and the absence of Chapin's
Pattens of dstribution within the East Coast
Escarpment
Although the montane avifaunas within the East
Coast Escarpment are similar in terms of their
species composiion, they are by no means hom-
ogenous. Only 15 of the 57 montane species
occur in all the forests for which data are provided
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