Social networks and environmental outcomes
Social networks and environmental outcomes
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DOI：
10.1073/pnas.1523245113
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发表时间：
2016-06-07
影响因子：
11.1
通讯作者：
Leung, PingSun
中科院分区：
文献类型：
--
作者：
Barnes, Michele L.;Lynham, John;Leung, PingSun
社交网络可以深刻地影响人类行为，而人类行为是推动环境变化的主要力量。然而，将微观层面的社会互动与大规模的环境结果联系起来的经验证据仍然很少。在这里，我们利用大型商业金枪鱼渔民之间的信息共享网络的综合数据，以研究社交网络如何与鲨鱼误捕，一个全球性的环境问题。我们表明，渔民主要在其种族群体内共享信息的倾向，创造了与鲨鱼兼捕强烈相关的隔离网络。然而，一些渔民跨越种族线共享信息，他们的兼捕率的检查表明，网络接触更密切相关的捕鱼行为比种族。我们的研究结果表明，社交网络与可以直接影响海洋生态系统的行为有关，而对群体内关系的偏见可能会阻碍可持续行为的传播。重要的是，我们的分析表明，加强隔离渔民群体之间的沟通渠道，可以防止2008年至2012年在单一商业渔业中偶然捕获46 000多条鲨鱼。
Social networks can profoundly affect human behavior, which is the primary force driving environmental change. However, empirical evidence linking microlevel social interactions to large-scale environmental outcomes has remained scarce. Here, we leverage comprehensive data on information-sharing networks among large-scale commercial tuna fishers to examine how social networks relate to shark bycatch, a global environmental issue. We demonstrate that the tendency for fishers to primarily share information within their ethnic group creates segregated networks that are strongly correlated with shark bycatch. However, some fishers share information across ethnic lines, and examinations of their bycatch rates show that network contacts are more strongly related to fishing behaviors than ethnicity. Our findings indicate that social networks are tied to actions that can directly impact marine ecosystems, and that biases toward within-group ties may impede the diffusion of sustainable behaviors. Importantly, our analysis suggests that enhanced communication channels across segregated fisher groups could have prevented the incidental catch of over 46,000 sharks between 2008 and 2012 in a single commercial fishery.