Iregi Mwenja

The status and threats to the De Brazza Population in Mathews Range Forest Reserve – Exploring possible conservation interventions.

Iregi Mwenja searching for De Brazza monkey in Mt. Elgon National Park Kenya. D Brazza were last seen inside the Park 7 years ago

LocationCountryCategoriesDate
Samburu DistrictKenyaAfrica, Comunity, Forests26 Oct 2006

The Mathew Ranges De Brazza population was only “discovered” a few years ago. Its isolated habitat lies outside the species known ecological and geographic range in Africa - East of the Great Rift Valley. This satellite population has been separated from the rest of the De Brazza population – an equatorial Africa, for millions of years ago, prompting suggestion that it could even be new sub-species.

Thus the primary goal of this pioneering study is to determine the size and conservation status of the De Brazza population in Mathews Range Forest Reserve in order to come up with conservation priorities and management recommendations.

The project sets out to achieve the following aims;

1)Provide information that will be used by the Kenya Wildlife Service, Institute of Primate Research and Kenya Forest Service to actively protect and conserve this group by; opening up a base there to monitor the species, protecting the habitats from human encroachment and initiating an ecological monitoring program.
2)Locate and establish the size and the population structure of the De Brazza in Mathews to provide crucial information for future studies, monitoring and conservations efforts.
3)Establish the viability of the population in this habitat to determine what type human interventions are needed and whether some can be used to diversify the gene pool in other isolated populations elsewhere targeted for translocation in future.
4)To identify threats, if any, to the species and its habitat and make recommendations on the appropriate mitigative measures through an integrated conservation programs.
5)Explore possibilities of this habitat’s potential to accommodate vulnerable groups outside protected areas that need to be relocated.

Local communities, organisations or individuals will get the following benefits from this project

a)Socio-economic gains; the rapidly expanding eco-tourism market for northern Kenya needs to be explored further as an economic incentive to the community to support conservation. This has worked really well in neighboring Namunyak, and Ilgwesi community conservancies.
b)Environmental benefits; this study will recommend protection of the Mathews range which act as the catchment and source of rivers in the area which will inturn benefit the community in its catchment.
c)Generation of ecological information on this habitat which will be critical to local conservation organizations operating there.

For more information contact iregim@yahoo.com or go to http://www.eawildlife.org

Read about his latest RSG project http://www.ruffordsmallgrants.org/rsg/projects/iregi_mwenja_0

Project Update October 2006

Progress on implementation of activities

The Mathews range De brazza study is currently going on in collaboration with a local Community Based Organisation - Milgis Trust who is helping with local scout’s recruitment, deployment and ground logistics.

The following activities have so far been undertaken:

Local scouts who are familiar with the remote rugged mountain, have been trained and are currently gathering information on the distribution of the de brazza’s in the extensive Mathews Range Forest Reserve.

More scouts have now been deployed to the eastern side which has not been surveyed yet. For the next one month, two teams will patrol the Luggas of the eastern side recording the distribution and population sizes of troops suspected to inhabit the areas.

A graduate research assistant has joined the team to give scientific guidance to the data collection process. The second phase of Intensive data collection by the Lead Investigator and the trained research assistant will resume in December when rains subside. The current team is expected to have located all the groups in Mathews and possibly in the neighboring mountains.

Findings

Preliminary findings reveal that there have been sightings in the central and western range of the reserve. In one Lugga, the scouts counted 24 de brazza’s in two troops, while in the central luggas, they counted a troop of four before the rest disappeared into the thick riverine forest. A few Kilometers up stream, on a different tributary, the team located another troop and managed to count four.

The three groups will be closely followed and studied to determine the population size, structure and socio organization in December.

Conclusion

Apart from the three confirmed groups, we have received reliable reports of sightings by locals honey gatherers of more troops on the eastern Mathews. Two teams comprising of local honey gatherer acting as guides have been deployed there already to give exact location.

It worth noting that from extrapolation of the findings so far received, the population of the Mathews range forest ecosystems could be one of the highest in the country among the protected Areas where De Brazza occurs.

Primate Survey Report

Read about Iregi's findings in the surveys below.

File DownloadSize
Primate survey report 2007 part 3.pdf1.28 MB
Primate survey report 2007 part 2.pdf307.88 KB
Primate Survey Report 2007 part 1.pdf682.69 KB
Project Update: October 2007

Iregi Mwenja's pioneering survey of the newly discovered population of de Brazza's monkey in Mathews range of Samburu Kenya has been published in the PC journal of the IUCN/ SSC Primates Specialist Group. Read the article here; www.primate-sg.org/PDF/PC22.new.neglectus.pdf

The Rufford Small Grant Foundation's contribution was fully recognised in the article. The publication of these findings by PSG is a clear testimony that the Rufford Small Grants Foundation is able to identify and supports critical primates conservation project on the world.

Read more about Iregi's on his blog at www.wildlifedirect.org/blogAdmin/samburumonkeys

File DownloadSize
PC22. Cercopithecus neglectus.pdf418.37 KB
National Geographic News: November 2007

A new population of De Brazza's monkeys, a species thought to be near extinction in eastern Africa, has been discovered in Kenya, a scientist has reported.....Read the full story at http://news.nationalgeographic.com/news/2007/11/071105-monkeys.html

Swara: December 2007

Read the article in "Swara" - East Africa's leading wildlife conservation magazine highlighting Iregi Mwenba's work in Mathews range.

File DownloadSize
Swara De Brazza article.pdf308.03 KB

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