Malala, J.O. 1,
J. Mugo1, G.M. Nyang'au1,
J.E. Ojuok1, J. Mwamburi1,
P.T. Obade1 & R.
Kundu2
1Kenya Marine and Fisheries
Research Institute, Naivasha Station, P.O. Box 837, Naivasha,
Kenya.
2Fisheries Department,
P.O. Box 135 Naivasha, Kenya.
The fishery of Lake Naivasha, Kenya: its potential, threats
and implication of the current management strategies
Lake Naivasha, the second Ramsar designated wetland
in Kenya, has a unique and fragile ecosystem. However the Lake's
resources are faced with major conflicting demands from such sectors
as agriculture, local councils, industry, fisheries, tourism and
conservation. The fisheries which is among the major resource
for the local community is based on three exotic species; Oreochromis
leucostictus, Tilapia zilii and Micropterus salmoides
(black bass) and a crustacean Procambarus clarkii (crayfish).
The average composition of the catch between 1989 and 1999 was
O leucostictus 57.5%, T. zilii 19.6%, M. salmoides
10.3% and P. clarkii 12.6%. The average annual catch since
1984 has been slightly over 200 metric tonnes with the variation
over the years ranging from as low as 50 tonnes to over 600 tonnes.
The fishery supports over 900 fishers (both registered and illegal)
with over 3,000 dependants and about 300 fish traders with over
1000 dependants. The annual income generated from the fish landings
has been varying between Ksh 2 million and 16 million for the
last ten years. The major threats facing the lake's fishery include;
Lake level fluctuations, over capacity, bad fishing practices
and limited fisheries management resources which have led to the
recent decline of fish stocks in the Lake. A complete ban on fishing
activities has been in place since February 2001 to prevent complete
collapse of this fishery. Preliminary results show that the Lake's
fish production potential can be sustained by improving management
strategies. The paper highlights some management problems from
a historical perspective and recommends an integrated approach
for sustainable utilisation of the Lake's resources.