Global Issues
INTRODUCTION
Decrease in genetic diversity from adult to progeny population is known to occur among forest tree species whose populations are sparse or isolated with little or no gene flow among the populations or patches (Doligez and Joly, 1997).
Studies have shown that in biodiversity-rich areas, only a few sites can be set aside for conservation of key plant species due to contending crops and other plnat species.The pressure on land use restricts the proportion of the total genetic variability in a given species that can be set aside. Genetic diversity of populations may erode over time in in situ sites, especially if the populations are small and fragmented or disjunct (Uma Shaanker and Ganeshaiah, 1997).
In-situ conservation Ideally in situ programmes require information on where to conserve a part from establishing support and commitment. Obtaining spatially explicit information on the distribution of intraspecific genetic variability and the identification of ‘hotspots’ of genetic variability is new and presents a big challenge for tropical research(Uma Shaanker and Ganeshaiah, 1997).
Examples
Kakamega Forest eco-region in western Kenya is a very rich patch exhibiting remnants of equatorial forest ecology.The fast increasing population in the area is threatening the small strip of the biodiversity rich equatorial forest. This is why we are working with SEEDS FOR AFRICA to create an Ethnobotanical Inventory of useful plants for purposes of protection and conservation.
THE GOAL
Mapping the geographic distribution of the useful (within and around Kamega equitorial forest eco-zones) but underutilised plant species through creation of ethnobotanical plots. Mapping the genetic diversity of populations concerned will help identify the most useful and best bets plant species for in-situ conservation.If successful, this pioneering project will be replicated in other parts of Africa where Seeds for Africa and Plant Life International operate. Details of this project can be found in our projects page