Model households are a key aspect of the Health of People and Environment in the Lake Victoria Basin (HoPE-LVB), an integrated Population, Health_and Environment (PHE) project with sites in Kenya and Uganda. Model households are trained in multiple project activities to illustrate behaviors that allow families to thrive without taking a toll on their environment and natural resources.
Lake Victoria is Africa's largest lake and the world's second largest. It is also a key resource for the people of East Africa. It has the largest freshwater fisheries producing 700,000 to 800,000 tonnes of fish annually, worth between US$350 and 400 million at the landings and US$250 million in export. Additionally there is an important untapped potential to expand both the tourism and transportation industries across the lake. Approximately 30 million people live along its shores and the lake currently provides employment for three to four million people.
Kajulu and Nyando (both upstream) and Dunga (downstream) wetlands are located in Kisumu County. Upstream land is largely privately owned and mainly used for agriculture, energy needs and water. Deforestation and water diversion upstream worsen soil loss, leading to siltation and agro-chemical deposits downstream, which then leads to eutrophication of wetland ecosystems, reduced rainfall and reduced water flow to downstream swamps. All of this combines to cause a loss of wetland biodiversity, low crop output hence worsening food insecurity situation.
A recent expert review of the ecological risks of net pen aquaculture in the North American Great Lakes made a number of recommendations for Best Management Practices (BMPs) that should be applied to establishment of net pen farms. Based on that_study, researchers identified nine generic BMPs that could be applied to all Global Great Lakes.
The research effort_looks at the trends in fishing effort and landings from 2000 to 2014 in relation to the performance of the Beach Management Units (BMUs) since they were put in place. Having conducted a survey on the performance of the BMUs, researchers notice that the BMUs have rules and regulations that have been put in place. Respondents identified critical habitats that are presented in this research, some of which have since been demarcated. Results show that BMUs know critical habitats and identify them as areas where fish breed (97%).
Earth system models are the only scientific tools yet developed that are capable of integrating the multitude of physical, chemical and biological processes that determine past, present and future climate. Researchers here use the Community Earth System Model (CESM) to generate depictions of environmental futures under climate change specifically to serve stakeholder needs for each of the major Great Lake watersheds.
The Intergovernmental Panel on Climate Change (2014) predicts by the end of this century ~1 4 degrees_C warming and an uncertain trend in future rainfall in the Great Lakes region of East Africa, perhaps 10% lower than present in the Malawi/Nyassa basin and 10% higher in the lake basins to the north. Radar altimetry records of lake level trends available since 1992 display decadal scale variability of 1-2 m, with an overall trend in the last decade towards lower levels in Lakes Malawi/Nyassa and Rukwa, and higher levels in the lakes to the north of Rukwa.
In the face of stagnating wild fisheries in Lake Victoria and a rapidly growing human population, aquaculture may improve food and livelihood security in Kenya, Uganda, and Tanzania. Very recently, cages for farming the introduced Nile tilapia have been popping up on the lake at a rapid rate. While cage culture could provide food and income, there are many pressing questions: What will be the physical impact of cages on the lake's limnology? Will there be adverse effects for wild populations?
The United Nations' 2030 Agenda for Sustainable Development accepts the formidable challenge of integrating historically siloed, economic, social, and environmental goals into a unified plan of action for people, planet, and prosperity. While small-scale fisheries in marine systems were given their target as part of SDG14: Life below water, at first sight the SDGs appear to ignore inland fisheries.