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The complex relationship between asset wealth, adaptation, and diversification in tropical fisheries

机译：资产财富，适应和热带渔业多样化之间的复杂关系

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摘要

Marine small-scale fisheries are complex social and ecological systems that are currently pressurised by climate change, increasing demand for food, and expectation to sustain livelihoods. Species diversification and occupational diversification are often offered as adaptation strategies to increase the resilience of these fisheries to natural and economic shocks. However, little is known about the nature of species diversification within marine tropical fisheries. Based on 293 interviews with artisanal fishers from six coastal communities located at the isles of Zanzibar, Pemba, Mafia, and Mainland Tanga in Tanzania - we assess if fishers with the highest level of species diversification are the most financially secure and able to adapt to changes in the fishing industry. By creating an Asset Wealth Index (AWI) based on a Multiple Correspondence Approach (MCA), we investigate the relative levels of adaptive capacity and fishery connectivity within the different regional wealth quartiles. We find that less wealthy fishers target fewer species, making them less able to absorb changes in management measures focused on species, area, and closures. Likewise, fishers with higher wealth scores and higher adaptive capacity are able to better absorb the short-term losses of fisheries closures when compared to those with lower wealth and adaptive scores reliant on higher levels of fishery connectivity.
机译：海洋小规模渔业是复杂的社会和生态系统，目前受到气候变化，越来越多的食物需求和维持生计的压力。物种多样化和职业多样化通常作为适应策略，以增加这些渔业的恢复力，以自然和经济冲击。但是，关于海洋热带渔业内物种多样化的性质知之甚少。基于293次沿海社区的Irtisanal渔民，位于桑给巴尔岛，Pemba，Mafia和坦加地区大陆唐娜的六个沿海社区的访谈 - 我们评估具有最高级别多样化的渔民是最经济上的安全且能够适应变化在渔业。通过基于多个通信方法（MCA）创建资产财富指数（AWI），我们调查不同区域财富四分位数内的适应能力和渔业连接的相对水平。我们发现较少的富有渔民瞄准较少的物种，使它们能够吸收专注于物种，地区和封闭物种的管理措施的变化。同样，与拥有较低财富和适应性分数依赖于较高水平的渔业连接时，具有更高财富分数和更高的自适应容量的渔民能够更好地吸收渔业封闭的短期损失。

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