The
Namibian Lion Population - applied
research & monitoring
Namibian lions have been studied and monitored intensively
since 1980 (Junker & Stander 2001). The Carnivore Atlas
(Stander & Hanssen 2004) estimates a population of 562-894
lions in three density distribution categories (below). There
are five sub-populations, and only the reintroduced population
(Kalahari Game Lodge) is isolated. The low-density distribution
area represents both resident lions, at low density, and nomadic
or dispersing lions. There is good evidence of lions moving
between the Kunene/Etosha sub-populations, and between the
Caprivi/Kaudum sub-populations. The two western sub-populations
are effectively cut-off from the east, where lions form part
of a larger population linking southern and East Africa.

Monitoring
of key ecological parameters is essential for conservation
and management Loveridge et al. 1990). There is a need to
implement monitoring programmes for all four sub-populations
of lions. Reliable data on population demography, ecology
and distribution must be collected to aid and develop effective
conservation strategies. A basic monitoring design is proposed
for each of the four sub-populations.
Etosha
sub-population
Etosha lions have been studied since 1980 (Junker & Stander
2001). These long-term data on pride structures, age-specific
mortality, and family lineages are extremely valuable to the
development of Lion Conflict Management Strategies (LCMS)
and the National Lion Conservation Strategy. The continuation
of some aspects of this monitoring programme is important.
It will require little time and few resources, but will build
on, and improve this valuable long-term data set. An evaluation
of previous research (Junker & Stander 2001) indicates
that the status and stability of the Etosha lion population
can be measured from a sample of four key lion prides. By
monitoring the size, age/sex structure, recruitment, and adult
mortality-rates of the four key-prides, a sufficiently robust
sample is obtained of trends in the population. The four key-prides
consist of two in central Etosha (Okondeka & Gemsbokvlakte),
one in western Etosha (Renostervlei/Dolomietpunt) and one
in the east (Namutoni/Chudop). One GPS collar and two VHF
radio-collar will be fitted to adult and sub-adult lions in
each of the four prides. They will be monitored intensively
once every quarter. During each observation, new additions
to the prides will be marked, following approved procedures,
to facilitate monitoring of pride compositions and population
ecology. These monitoring results, coupled with tourist observations,
as part of the Namibia Large Carnivore Atlas (NLC Atlas),
will present an adequate monitoring system for the Etosha
sub-population.
Kunene
sub-population - see Desert
Lion Project
Kaudom sub-population
Lions in the Kaudom and Nyae Nyae Conservancy were studied
between 1991 and 1996 (1997). With this study as background,
the Kaudom monitoring design will follow guidelines from the
Etosha studies and incorporate the skill and knowledge of
the local community. Two prides (Leeupan/Doringstraat &
Tsoana) will be monitored, following the Etosha model. In
addition, spoor frequency counts (Stander 1998) and NLC Atlas
data will be collected to supplement the monitoring programme.
Caprivi
sub-population
Although lions in the Caprivi have been studied previously,
there are little available data. Understanding the status
and ecology of Caprivi lions is further complicated by regular
movements across international boundaries. However, human-lion
conflict is extensive and there is and urgent need for reliable
data. It is proposed that systematic monitoring of this sub-population,
in collaboration with neighbouring countries, be initiated
immediately. The monitoring design should initially follow
the Etosha model, focusing on four prides (Mahango, Susuwe,
Madumu & Mamili areas), but must be adapted to local ecological
conditions, as data become available.
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