The implications of a changing climate on the Kapenta fish stocks of Lake Kariba, Zimbabwe

Ndebele-Murisa, Mzime R.; Mashonjowa, Emmanuel; Hill, Trevor

doi:10.1080/0035919x.2011.600352

Cited by 35 publications

(52 citation statements)

References 34 publications

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“…Limited options for food and protein sources can therefore contribute to low food security. Although the consumption of fish is known to promote health [53], if catches decline due to climate change, as predicted by IPCC [21], and supported by Ndebele-Murisa et al [32], the availability of fish will diminish and exacerbate SSF sensitivity.…”

Section: Community Characteristics and Livelihood Assetsmentioning

confidence: 99%

Assessing the Sensitivity of Small-Scale Fishery Groups to Climate Change in Lake Kariba, Zimbabwe

et al. 2017

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Abstract:Climate change continues to pose threats to fisheries and fishery-dependent communities globally. Vulnerability to climate change is a function of exposure, sensitivity, and adaptive capacity. Sensitivity is largely determined by the differences in socio-economic conditions among communities, and conflicts over resources often exacerbate this sensitivity. This study aims to understand factors affecting the sensitivity to climate change. The objectives are twofold: first, to develop indicators affecting sensitivity and to determine how they affect sensitivity, second, to compare sensitivity of two small-scale fishing groups (fishing camps and fishing villages). The study used twelve indicators, which are categorized into two; the community characteristics and assets, and threats and conflicts. Results show that fishing camps are less sensitive to climate change than fishing villages since they have more varied livelihood sources, such as crop farming. This allows for more sources of income. Both groups experience conflict with other lake users and wildlife attacks, which amplify their sensitivity through the reduction of fishing grounds and the damaging of fishing gear. It also shows that both climate and non-climate factors affect sensitivity, and understanding this can help to increase adaptive capacity. The findings allow for formulation of policy recommendations to help strengthen the livelihoods of small-scale fisheries.

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Section: Community Characteristics and Livelihood Assetsmentioning

confidence: 99%

Assessing the Sensitivity of Small-Scale Fishery Groups to Climate Change in Lake Kariba, Zimbabwe

et al. 2017

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“…Fish yield in Lake Chilwa decreased to zero in 1996 following desiccation of the lake (Allison et al 2007;Njaya et al 2011). The yield of Limnothrissa miodon Boulenger in Lake Kariba decreased at an average of 24 metric tons per year between 1974 and 2003, associated with changes in rainfall and water levels (Ndebele-Murisa et al 2011). In Uganda, the contribution of a less economically valuable small fish species, Rastrineobola argentea Pellegrin in lakes Victoria and Kyoga and that of Neobola bredoi Poll and Brycinus nurse Ruppel in Lake Albert have increased to 40-80 % of the commercial catches (Ogutu-Ohwayo et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Fishers’ perceptions of climate change, impacts on their livelihoods and adaptation strategies in environmental change hotspots: a case of Lake Wamala, Uganda

Musinguzi

Efitre

Odongkara

et al. 2015

Environ Dev Sustain

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Fisheries resources support livelihoods of fishing communities but are threatened by over-exploitation, habitat degradation, pollution, invasive species and climate change. Unlike the other threats, climate change has received limited consideration and reducing its risks requires appropriate adaptation strategies. This study used quantitative and qualitative methods to generate knowledge on fishers' perceptions of climate change, changes in climate variables and their impacts on livelihoods, adaptation strategies, constraints to adaptation and required interventions to promote adaptation strategies that would enable fishers to build resilience to sustain their livelihoods. We found that fishers were aware of changes in climate conditions manifested by unpredictable seasons, floods and droughts. Fishing remained the main livelihood activity. However, the dominance of fishes had changed from Nile tilapia (Oreochromis niloticus L.) to the African catfish (Clarias gariepinus Burchell). Floods and droughts were associated with damage to gears, boats, landing sites and changes in fish catches and sizes, income from fishing and fish consumption. The fishers adapted by increasing time on fishing grounds and changing target species and fishing gear among other things. Some innovative fishers diversified to high-value crops and livestock. This increased their income beyond what was solely earned from fishing which provided an incentive for some of them to quit fishing. Livelihood diversification was enhanced by use of communications technology, membership of social groups, increasing fishing days and fishing experience. Adaptation was, however, constrained by limited credit, awareness and access to land, which require interventions such as improving access to credit, irrigation facilities, appropriate planting materials and awareness raising. We identified adaptation strategies, which if promoted and their constraints addressed, could increase resilience of fishers to the influence of climate change and sustain their livelihoods.

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“…I must challenge the conclusions reached in the paper "The implications of a changing climate on the Kapenta fish stocks of Lake Kariba, Zimbabwe" by Ndebele-Murisa et al (2011). The authors reach the conclusions that "both climate … and nutrients … are the primary determinants of Lake Kariba's Kapenta production.…”

Section: Discussionmentioning

confidence: 95%

“…The claim that changing Kapenta fish catch from Lake Kariba by Ndebele-Murisa et al (2011;Trans. Roy.…”

Section: Discussionmentioning

confidence: 99%

“…Regarding the major threats and challenges to the operation and management of Lake Kariba, he cites eight issues, the first two being "the invasive weeds on Lake Kariba" and "pollution of Lake Kariba's water resources". The entire publication by Ndebele-Murisa et al (2011) does not refer once to pollution or weeds (specifically water hyacinth) and their potential influence on fishing and fish stocks. I therefore consider their analysis of their data extremely myopic.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Changing fish stocks in Lake Kariba: climatic or human-induced impact?

FRSSAf

2011

Transactions of the Royal Society of South Africa

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The implications of a changing climate on the Kapenta fish stocks of Lake Kariba, Zimbabwe

Cited by 35 publications

References 34 publications

Assessing the Sensitivity of Small-Scale Fishery Groups to Climate Change in Lake Kariba, Zimbabwe

Assessing the Sensitivity of Small-Scale Fishery Groups to Climate Change in Lake Kariba, Zimbabwe

Fishers’ perceptions of climate change, impacts on their livelihoods and adaptation strategies in environmental change hotspots: a case of Lake Wamala, Uganda

Changing fish stocks in Lake Kariba: climatic or human-induced impact?

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