Blythe Jessica, Flaherty Mark, Murray Grant
Department of Geography, University of Victoria, Victoria, BC, Canada,
Ambio. 2015 May;44(4):275-84. doi: 10.1007/s13280-014-0574-z. Epub 2014 Nov 13.
Millions of people around the world depend on shrimp aquaculture for their livelihoods. Yet, the phenomenal growth of shrimp farming has often given rise to considerable environmental and social damage. This article examines the impacts of commercial, export-oriented shrimp aquaculture on local livelihood vulnerability by comparing the exposure, sensitivity, and adaptive capacity of shrimp farm employees with non-farm employees in rural Mozambique. Exposure to stressors was similar between the two groups. Shrimp farm employees had higher assets and higher adaptive capacity than non-farm employees. However, because their income is heavily dependent on a single commodity, shrimp farm employees were highly susceptible to the boom crop nature of intensive shrimp farming. The implications for aquaculture policy and vulnerability research are discussed. The article argues that coastal vulnerability is dynamic, variable, and influenced by multiple processes operating at multiple scales.
世界各地数以百万计的人依靠虾类养殖维持生计。然而,虾类养殖的迅猛发展常常造成相当严重的环境和社会破坏。本文通过比较莫桑比克农村地区虾类养殖场员工与非养殖场员工面临的风险、敏感程度和适应能力,研究了商业化、出口导向型虾类养殖对当地生计脆弱性的影响。两组人员面临压力源的情况相似。虾类养殖场员工比非养殖场员工拥有更多资产和更强的适应能力。然而,由于他们的收入严重依赖单一产品,虾类养殖场员工极易受到集约化虾类养殖收成波动特性的影响。文中讨论了对水产养殖政策和脆弱性研究的启示。文章认为,沿海地区的脆弱性是动态变化的,受到多尺度上多种作用过程的影响。