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Measuring the contribution of ecological composition and functional services of ecosystems to the dynamics of KwaZulu-Natal coast fisheries

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  • Hassan, R.M.
  • Crafford, J.G.

Abstract

This study extended a bio-economic fishery model to establish an explicit link between coastal and estuarine ecosystems ecological composition (biodiversity) and functional (nutrient supply) attributes and the dynamics and productivity of KZN coastal fisheries. Results confirmed the importance and strong contribution of the tested ecological attributes. In-sample simulation indicates that current fishing efforts and harvest rates are sustainable, but are sensitive to changes in nutrient influx and rainfall. This confirms the need to modify conventional fisheries models to include environmental variables as additional predictors of fish stocks in addition to historical catch records and catch effort for management and control of fishing efforts and permits. This study provided confirmation of the strong linkage between nutrient levels and productivity of coastal fisheries thus enabling investigation of runoff and rainfall related climate change effects on the KZN fisheries.

Suggested Citation

  • Hassan, R.M. & Crafford, J.G., 2015. "Measuring the contribution of ecological composition and functional services of ecosystems to the dynamics of KwaZulu-Natal coast fisheries," Ecological Economics, Elsevier, vol. 119(C), pages 306-313.
    • Handle: RePEc:eee:ecolec:v:119:y:2015:i:c:p:306-313
    DOI: 10.1016/j.ecolecon.2015.09.014
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    2. Yang Wang & Remina Shataer & Tingting Xia & Xueer Chang & Hui Zhen & Zhi Li, 2021. "Evaluation on the Change Characteristics of Ecosystem Service Function in the Northern Xinjiang Based on Land Use Change," Sustainability, MDPI, vol. 13(17), pages 1-17, August.
    3. Hanny John Mediodia & Viktoria Kahui & Ilan Noy, 2023. "Sea Surface Temperature and Tuna Catch in the Eastern Pacific Ocean under Climate Change," Marine Resource Economics, University of Chicago Press, vol. 38(4), pages 329-351.
    4. Jun Ma & Jinliang Wang & Jianpeng Zhang & Suling He & Lanfang Liu & Xuzheng Zhong, 2024. "The Impact of Land Use and Land Cover Changes on Ecosystem Services Value in Laos between 2000 and 2020," Land, MDPI, vol. 13(10), pages 1-19, September.

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