C. Chomba, E. M’Simuko / Open Journal of Ecology 3 (2013) 325-330 329
65
11
46
39
77
y = -14.9x + 62
R2 = 0.864
0
5
10
15
20
25
30
35
40
45
50
Acacia woodland Mopane woodlandShrubland Flood plain
Vegetation community
Number; percent relative frequency
Number Percentage Linear (Percentag e )
Figure 5. Raptor nest placement with respect to vegetation
community selects, Lochinvar National Park, Kafue Flats,
Zambia, 2012.
would expose it to wild fires, implying that the eggs or
chicks would be destroyed by fire and the parents would
have to repeat the task of rebuilding a new nest and re-
investing energy in laying another clutch of eggs.
4.2. Nest Placement with Respect to
Vegetation Community
The Acacia and Mopane woodlands are the only vege-
tation communities in Lochinvar National Park with
large and tall trees which can accommodate raptor nests.
Since raptors require placing their nests at least 10 me-
ters above ground, they would only select vegetation
communities with large tall trees. Additionally, the
change in the flooding regime since the construction of
the Itezhi Tezhi dam in 1979 [7], has contributed to the
loss of some old trees and emergence of new secondary
vegetation communities which may not yet have large
trees suitable for raptor nest placement. The extension of
agricultural activities on the periphery of the National
Park coupled with charcoal production may have con-
tributed to loss of large trees in neighbouring vegetation
communities.
4.3. Nest Placement in Relation to Distance
from Human Activity
The Lochinvar National Park, on the Kafue Flats is a
source of fish protein from the Chunga lagoon and Kafue
River. Once or twice a week, the National Park authori-
ties permit fish traders to enter the National Park and buy
fish from fisher men on the shores of Chunga lagoon.
More than 30 pickup trucks each carrying more than ten
people which is a min imum of 300 p eople may enter the
National Park. Such large groups of people with the as-
sociated noise from vehicle exhaust systems and hooting
would disturb the birds. Anecdotal reports also indicate
that sometimes people stop to view raptor nests near the
main road, which due to their size is an attraction and
cannot be easily hidden from people’s view. The Kafue
flats is also home to more than 15,000 herds of cattle,
and every day herds men bring cattle into the National
Park for gr azing. Such human disturbances combined are
disruptive enou gh to force raptors to abandon th eir nests.
Frequent visits by humans and passersby in general may
reduce nest attendance by parents and may lead to the
nest being abandoned. There is also a belief that fish ea-
gle and vulture parts have magical and mythical powers
and many people would need them to be used as medi-
cine in magic spells. A nest for a vulture or eagle located
in an area that is not secured would definitely be a target
as people attempt to get at the parent bird or the chicks.
This observation is in agreement with an observation
made in Nigeria where vultures were caught and con-
sumed for perceived medicinal and psychological bene-
fits and the decline and possible ex tirpation in that coun-
try was attributed to the trade in vulture parts for tradi-
tional juju practices as indicated in [2] above.
5. CONCLUSION
After analyzing the data and testing the hypotheses, it
was concluded as follows:
1) Tall trees of the height exceeding 10 m are critical for
placement of raptor nests.
2) Human disturbance would lead to raptors abandoning
their nests and thereb y reducing breeding success.
3) Lochinvar National Park authorities should consider
zoning key breeding areas for raptors in the National
Park as low visitor use zones as frequent and unregu-
lated visitation may lead to nest aban donment.
4) Construction of roads and other facilities for man-
agement and visitor use should take into account the
need to maintain large trees for raptor nest place-
ments.
It was therefore, established that mature trees of more
than ten meters in height, located in areas with minimum
human disturbance are critical to successful breeding of
raptors on the Kafue Flats, Zambia. Opening of new
roads, construction of new buildings as well as increase-
ing human activities in such habitats may lead to raptors
abandoning their nests. New infrastructure in the Na-
tional Park should avoid areas with high density of raptor
nests as they are known to return to the same nest to lay
eggs.
6. ACKNOWLEDGEMENTS
We wish to thank the Regional Manager Mrs. Marina Sibbuku for
allowing the researchers to operate in the National Park un interrupted,
Ms Hellen Nkole Mwaba the area ecologist, for providing logistics and
participating in the exercise, Mr. Chaka Harold Kaumba for preparing
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