Як уникнути підйому рівня води?

East Africa’s Lake Victoria provides resources and services to millions of people on the lake’s shores and abroad. In particular, the lake’s fisheries are an important source of protein, employment, and international economic connections for the whole region. Nonetheless, stock dynamics are poorly understood and currently unpredictable. Furthermore, fishery dynamics are intricately connected to other supporting services of the lake as well as to lakeshore societies and economies. Much research has been carried out piecemeal on different aspects of Lake Victoria’s system; e.g., societies, biodiversity, fisheries, and eutrophication. However, to disentangle drivers and dynamics of change in this complex system, we need to put these pieces together and analyze the system as a whole. We did so by first building a qualitative model of the lake’s social-ecological system. We then investigated the model system through a qualitative loop analysis, and finally examined effects of changes on the system state and structure. The model and its contextual analysis allowed us to investigate system-wide chain reactions resulting from disturbances. Importantly, we built a tool that can be used to analyze the cascading effects of management options and establish the requirements for their success. We found that high connectedness of the system at the exploitation level, through fisheries having multiple target stocks, can increase the stocks’ vulnerability to exploitation but reduce society’s vulnerability to variability in individual stocks. We describe how there are multiple pathways to any change in the system, which makes it difficult to identify the root cause of changes but also broadens the management toolkit. Also, we illustrate how nutrient enrichment is not a self-regulating process, and that explicit management is necessary to halt or reverse eutrophication. This model is simple and usable to assess system-wide effects of management policies, and can serve as a paving stone for future quantitative analyses of system dynamics at local scales

Competing for kayabo: gendered struggles for fish and livelihood on the shore of Lake Victoria

The dry-salted trade of Nile perch or kayabo is important for many along the shores of Lake Victoria. The kayabo trade started in the 1990s and has been increasingly restructured due to changing regional and global trade relationships. This shift has led to the emergence of hierarchical trading relations, which create an exploitative network in which powerful middlemen control the access of trade for women from the Democratic Republic of Congo (DRC) and marginalizes the Tanzanian women, changing the organization from a poly-centric to a more centralized trade organization in the hands of a small group of powerful business men. We show in this paper that whereas the women traders from the DRC manoeuvred themselves in positions from which they could manipulate the network through bribery and conniving to derive substantial capital gains from the kayabo trade, their Tanzanian counterparts however are excluded from the decision-making processes, access to fish resources, financial capital, and negotiation power. They persevere by operating in increasingly competitive markets, relying on illegal fish that they sell with little profit at local and domestic markets. They survive in jobs that are insecure and risky by nature

Competing for kayabo: gendered struggles for fish and livelihood on the shore of Lake Victoria

The dry-salted trade of Nile perch or kayabo is important for many along the shores of Lake Victoria. The kayabo trade started in the 1990s and has been increasingly restructured due to changing regional and global trade relationships. This shift has led to the emergence of hierarchical trading relations, which create an exploitative network in which powerful middlemen control the access of trade for women from the Democratic Republic of Congo (DRC) and marginalizes the Tanzanian women, changing the organization from a poly-centric to a more centralized trade organization in the hands of a small group of powerful business men. We show in this paper that whereas the women traders from the DRC manoeuvred themselves in positions from which they could manipulate the network through bribery and conniving to derive substantial capital gains from the kayabo trade, their Tanzanian counterparts however are excluded from the decision-making processes, access to fish resources, financial capital, and negotiation power. They persevere by operating in increasingly competitive markets, relying on illegal fish that they sell with little profit at local and domestic markets. They survive in jobs that are insecure and risky by nature

Pescadoras: subordinação de gênero e empoderamento Fisherwomen: gender subordination and empowerment

Cresce o número de estudos abordando o setor pesqueiro sob uma perspectiva de gênero, indicando que esse é fundamental para se entender como mulheres e homens participam da pesca e vivenciam os riscos ligados às recentes mudanças do setor. Contudo, políticas setoriais ainda têm dificuldade em incorporar a dimensão de gênero. Este texto evidencia dois argumentos principais. Primeiro, o silêncio sobre a questão feminina articula-se à situação de vulnerabilidade, característica de grande parte das comunidades pesqueiras, em países no "norte" e no "sul". Segundo, movimentos de mulheres pescadoras têm contribuído para questionar o status quo e inscrevê-las em políticas de empoderamento, sobretudo no que toca a espaços e direitos sociais. Ao mesmo tempo, esses movimentos buscam recuperar a capacidade que sistemas locais comunitários de gestão de recursos naturais têm demonstrado de adaptação à complexidade socioambiental e de respeito ao protagonismo feminino. O processo de empoderamento não é linear, mas complexo e marcado por contradições.<br>Since the last decade, studies on the fishing sector from a gender perspective have been growing, perceiving the ways gender constructions influence on how women and men work and face the risks linked to the recent changes that have been affecting the fishing activity. However, the related policies remain gender blind. This article discusses two main arguments. First, the silence about the women roles and places in fishing correlates to the vulnerability of many coastal communities in northern and southern countries. Second, fisherwomen movements have contributed to disrupt the status quo and to provide them access to empowerment policies, notably in relation to spaces and social rights. At the same time, their social movements aim to foster the local communities' capacities to manage their common resources, to adapt to social and environmental complexities and to promote gender equity. Empowerment process is complex and contradictory

Need for harmonized long-term multi-lake monitoring of African Great Lakes

To ensure the long-term sustainable use of African Great Lakes (AGL), and to better understand the functioning of these ecosystems, authorities, managers and scientists need regularly collected scientific data and information of key environmental indicators over multi-years to make informed decisions. Monitoring is regularly conducted at some sites across AGL; while at others sites, it is rare or conducted irregularly in response to sporadic funding or short-term projects/studies. Managers and scientists working on the AGL thus often lack critical long-term data to evaluate and gauge ongoing changes. Hence, we propose a multi-lake approach to harmonize data collection modalities for better understanding of regional and global environmental impacts on AGL. Climate variability has had strong impacts on all AGL in the recent past. Although these lakes have specific characteristics, their limnological cycles show many similarities. Because different anthropogenic pressures take place at the different AGL, harmonized multi-lake monitoring will provide comparable data to address the main drivers of concern (climate versus regional anthropogenic impact). To realize harmonized long-term multi-lake monitoring, the approach will need: (1) support of a wide community of researchers and managers; (2) political goodwill towards a common goal for such monitoring; and (3) sufficient capacity (e.g., institutional, financial, human and logistic resources) for its implementation. This paper presents an assessment of the state of monitoring the AGL and possible approaches to realize a long-term, multi-lake harmonized monitoring strategy. Key parameters are proposed. The support of national and regional authorities is necessary as each AGL crosses international boundaries

Need for harmonized long-term multi-lake monitoring of African Great Lakes

To ensure the long-term sustainable use of African Great Lakes (AGL), and to better understand the functioning of these ecosystems, authorities, managers and scientists need regularly collected scientific data and information of key environmental indicators over multi-years to make informed decisions. Monitoring is regularly conducted at some sites across AGL; while at others sites, it is rare or conducted irregularly in response to sporadic funding or short-term projects/studies. Managers and scientists working on the AGL thus often lack critical long-term data to evaluate and gauge ongoing changes. Hence, we propose a multi-lake approach to harmonize data collection modalities for better understanding of regional and global environmental impacts on AGL. Climate variability has had strong impacts on all AGL in the recent past. Although these lakes have specific characteristics, their limnological cycles show many similarities. Because different anthropogenic pressures take place at the different AGL, harmonized multi-lake monitoring will provide comparable data to address the main drivers of concern (climate versus regional anthropogenic impact). To realize harmonized long-term multi-lake monitoring, the approach will need: (1) support of a wide community of researchers and managers; (2) political goodwill towards a common goal for such monitoring; and (3) sufficient capacity (e.g., institutional, financial, human and logistic resources) for its implementation. This paper presents an assessment of the state of monitoring the AGL and possible approaches to realize a long-term, multi-lake harmonized monitoring strategy. Key parameters are proposed. The support of national and regional authorities is necessary as each AGL crosses international boundaries