Does It All Mean?
What we do has two, parallel uses. The most immediate is to give the
information and its interpretation to our Kenyan colleagues who want
to use it to improve their daily lives and the environment that they
live in. The mechanisms for this are the same in all the lakes and
their basins where we work,-through the global partnership of Ramsar
sites and using the thoroughly tried-and-tested support provided
by the Ramsar Secretariat based in
The second is to make the data available to the scientific community,
not least because these lakes are unique in the world. That means
publishing in scientific journals. We published 17 papers in 2002,
in the book after our Naivasha conference, and since then have published
or ‘in press’ 4 more on this lake; 5 on Lake Bogoria
and flamingos and 2 on Baringo.
The last few years have been very exciting times for our studies.
We discovered and were the first to document a new lake in the floodplain
of the main river leading to Baringo. This lake has given us insight
into Baringo and Naivasha’s original ecosystem, before it was
impacted by humans, and has given us an indication of how quickly
the lakes could recover if we can reduce the pressures on them. We
have put satellite transmitters on 7 lesser flamingos, whose movements
in eastern Africa can be followed from the WWT
and which yield new information for science and conservation . We
started a parallel project in 2003, funded by the Darwin Initiative
project, to help conserve the species and develop the necessary infrastructure & education
at Lake Bogoria. Through the use of new techniques (stable isotope
analysis) combined with old-fashioned, but essential field observations,
we have gained new insight into the way that Lake Naivasha’s
ecosystem is being restructured to an unprecedented degree by alien
with the local community
each location we are working with local communities,
through their schools, to make conservation an essential
part of their local lives. This is part of the Darwin
Initiative project at Lake Bogoria, and in Naivasha
is through the LNRA working with the Brock Initiative
to make short, relevant films with a conservation
work with the Darwin Initiative
and the town next to Elementeita, Gilgil, have
big problems with AIDS and resulting orphans. Maureen
Harper helped to set up and we now support an orphanage in
Here is their latest report
Zaccara S., G. Crosa, B. Childress, G. McCulloch and D. M. Harper (2008). Lesser Flamingo (Phoenicopterus minor) populations in eastern and southern Africa are not genetically isolated. Ostrich – Journal of African Ornithology, 79, 2.
Britton JR, Harper DM. (2008) Juvenile growth of two tilapia species in lakes Naivasha and Baringo, Kenya. Ecology of Freshwater Fish, 17: 481–488.
Britton, JR., Boar, R., Grey, J., Foster, J., Lugonzo, J., D.M. Harper (2007) From introduction to fishery dominance: the initial impacts of the invasive carp Cyprinus carpio in Lake Naivasha, Kenya, 1999-2006. Journal of Fish Biology, 71, 239-257.
Childress, B., B. Hughes, D.M. Harper, W. Van den Bossche, P. Berthold & U. Querner (2007) East African flyway and key site network of the Lesser Flamingo (Phoenicopterus minor) documented through satellite tracking. Ostrich – Journal of African Ornithology, 78, 483-488.
Foster J & D.M. Harper, (2006). Status of the Alien Louisianan Red Swamp Crayfish Procambarus clarkii Girard and the Native African Freshwater Crab Potamonautes loveni in Rivers of the Lake Naivasha Catchment, Kenya. Freshwater Crayfish 15, 1-8.
Foster J & D.M. Harper, (2006). The Alien Louisianan Red Swamp Crayfish Procambarus clarkii Girard in Lake Naivasha, Kenya 1999-2003. Freshwater Crayfish 15, 9-15.
Oaks, J.L., Bradway, D., Davis, M. & Harper, D.M. (2006) Septic Arthritis and disseminated infections caused by Mycobacterium avium in Lesser Flamingos, Lake Bogoria, Kenya. Flamingo, 14, 30-32.
Childress, R.B., D.M.Harper, B. Hughes & C. Ferris (2006). Adaptive benefits of differential post-fledging growth patterns in the Lesser Flamingo (Phoenicopterus minor). Ostrich – Journal of African Ornithology 77, 84-89
Britton J.R. & Harper D.M. (2006). Length-weight relationships of fish species in the freshwater rift valley lakes of Kenya. Journal of Applied Icthyology 22, 1-3.
Britton J.R. & Harper D.M. (2005) Preliminary investigations into the age and growth of a large mouth bass population in an equatorial lake. Journal of East African Natural History 94, 363-370.
Britton J.R. & Harper D.M. (2005) Assessing the true status of Labeo cylindricus in Lake Baringo, Kenya. African Journal of Aquatic Science 30, 203-205.
Childress, R.B., D.M.Harper, B. Hughes & C. Ferris (2005). Sex determination in the Lesser Flamingo (Phoenicopterus minor) using morphological measurements. Ostrich – Journal of African Ornithology 76, 148-153.
Harper, D.M. & K.M. Mavuti (2004). Lake Naivasha, Kenya: Ecohydrology to guide the management of a tropical protected area. Ecohydrology & Hydrobiology 4, 287-305.
Hickley, Mucai Muchiri, Rosalind Boar, Robert
Britton, Chris Adams, Nicholas Gichuru, David
degradation and subsequent fishery collapse in Lakes
Naivasha and Baringo, Kenya" published in the
International Journal of Ecohydrology & Hydrobiology,
No 4, 503-517, 2004.
M.Z., Harper D.M. (2004) A comparative study of the
breeding behaviour of the Augur Buzzard, Buteo
in two different land-use areas in southern Lake Naivasha,
Kenya. Ostrich 75: 11-19
Childress B., Harper D., Hughes
B., Van den Bossche W. Berthold P., Querner U.(2004)
lesser flamingo movements in the Rift Valley,
East Africa: Pilot Study Report. Ostrich 75: 57-65
Harper D.M., Childress R.B., Harper M.M., Boar R.R., Hickley
P., Mills S.C., Otieno N., Drane T., Vareschi E., Nasirwa O.,
Mwatha W.E., Darlington
J.P.E.C., Excuté-Gasulla X. (2003) Aquatic biodiversity and saline
lakes: Lake Bogoria National Reserve, Kenya. Hydrobiologia
Tarras-Wahlberg , David Harper and Nils Tarras-Wahlberg
(2003) A first limnological description of Lake Kichiritith,
Kenya: a possible reference site for the freshwater
lakes of the Gregory Rift Valley, South African Journal
of Science 99, 494
Becht R & Harper
D.M. Towards an understanding of human impact upon the hydrology
of lake Naivasha. Hydrobiologia, 2002: 488, 1-11.
J & Harper DM (2002) Using stable isotope analyses
to identify allochthonous inputs to Lake Naivasha mediated
via the hippopotamus gut. Isotopes Environ. Health
Stud. Vol 38(4), pp. 245-250
N. Harper, D.M. Pacini N. & Mavuti, K. Chemical
characteristics, with particular reference to phosphorus,
of the rivers draining into
Lake Naivasha, Kenya. Hydrobiologia, 2002: 488, 57-71.
R. Brooks Childress, Leon A. Bennun & David M.Harper,
Population changes in sympatric Great and Long-tailed Cormorants
(Phalacrocorax carbo and P. africanus): the effects of
niche overlap or environmental change? Hydrobiologia 488:
Jacqueline A. Vale, David M.Harper& Håkan
Tarras-Wahlberg, The physical attributes
of the Lake Naivasha catchment rivers, Hydrobiologia 488:
S. M. Gitahi, D.M.Harper,S.M.Muchiri,
M.P.Tole & R.
N. Ng’ang’a, Organochlorine and organophosphorus
pesticide concentrations in water, sediment, and selected
organisms in Lake Naivasha (Kenya), Hydrobiologia 488:
D.M., Smart, A.C., Coley, S., Schmitz, S., North, R., Adams,
C., Obade P. & Mbogo K., Distribution and abundance
of the Louisiana red swamp crayfish Procambarus clarkii
Girard at Lake Naivasha, Kenya
between 1987 and 1999. Hydrobiologia, 2002: 488, 143-151.
Phil Raburu, Kenneth
M. Mavuti,David M.Harper & Frank L.Clark.
Population structure and secondary productivity of Limnodrilus hoffmeisteri
(Claparede) and Branchiura sowerbyi Beddard in the profundal zone of
Lake Naivasha, Kenya, Hydrobiologia 488: 153–161, 2002
Andrew C. Smart, David
M.Harper, François Malaisse, Sophie
Schmitz, Stephanie Coley & Anne-Christine Gouder de Beauregard,
Feeding of the exotic Louisiana red swamp crayfish, Procambarus clarkii
(Crustacea, Decapoda), in an African tropical lake: Lake Naivasha,
Kenya. Hydrobiologia 488: 129–142, 2002.
Håkan Tarras-Wahlberg, Mark Everard & David M.Harper, Geochemical
and physical characteristics of river and lake sediments at Naivasha,
Kenya. Hydrobiologia 488: 27–41, 2002.
D.M., Harper, M.M., Virani, M.A., Smart, A.C., Childress,
R.B., Adatia, R., Henderson, I. & Chege, B. Population
fluctuations and their causes in the African Fish Eagle,
(Haliaeetus vocifer (Daudin))
at Lake Naivasha, Kenya. Hydrobiologia, 2002: 488, 153-161.
R.R. Boar &David M.Harper. Magnetic susceptibilities of lake sediment and
soils on the shoreline of Lake Naivasha, Kenya. Hydrobiologia 488: 81–88,
C. S. Adams,R.R.Boar,
D. S. Hubble, M. Gikungu,D.M.Harper, P. Hickley & N. Tarras-Wahlberg.
The dynamics and ecology of exotic tropical species in floating plant
mats: Lake Naivasha, Kenya.Hydrobiologia
2002 488: 115–122.
Phil Hickley, Roland Bailey, David M. Harper, Rodrick
Kundu, Mucai Muchiri, Rick North & Andy Taylor,
The status and future of the Lake Naivasha fishery, Kenya.
Hydrobiologia 488: 181–190, 2002.
S. Hubble & David M.Harper, Phytoplankton community
structure and succession in the water column of Lake
Naivasha, Kenya: a shallow tropical lake. Hydrobiologia
488: 89–98, 2002
S. Hubble & David M.Harper, Nutrient control
of phytoplankton production in Lake Naivasha, Kenya.
Hydrobiologia 488: 99–105, 2002.
Pacini N. & Harper D.M. Biodiversity and conservation of Afrotropical
wetland invertebrates. In Biodiversity in Wetlands: Assessment, Function
and Conservation. Volume 2. Eds. B. Gopal, W. Junk & J.A. Davies,
pp 133-156, 2001 Backhuys Publishers, Leiden, Netherlands
Pacini, N. & Harper, D.M. River conservation in central and tropical
Africa. In Global Perspectives on River Conservation: Science, Policy
and Practice. Eds. P.J.Boon, B.R.Davies & G.E.Petts, pp 155-178,
2000. John Wiley & Sons, Chichester.
Kemp J.L., Harper D.M. &.Crosa G.A.. Habitat-scale ecohydraulics
of rivers. Ecological Engineering, 2000: 16, 17-3