Abstract While there is a broad understanding of upwelling impacts on the functioning of marine ecosystems, empirical data that link this process to commercial species landings have not received the attention they deserve. The aim of this study was to explore the role of coastal upwelling in determining total allowable catch (TAC) and harvests of benthic fisheries, managed through a policy which assigns Territorial User Rights to Fishers (TURFs) along the Chilean coast. We used official historical TAC (217 TURFs) and harvest data (224 TURFs) for one of the most important benthic gastropod resources (“Loco”, Concholepas concholepas) of the TURF system. TAC and harvest data ranged from 2001 to 2018 and were used to explore relations with an index of seasonal coastal upwelling, derived from a spatiotemporal decomposition, of sea surface temperature along the same study areas and period. Using Bayesian generalized linear multilevel models (TURFs as group-level effect), we showed a positive and significant effect of the upwelling over TAC and harvest of Loco. Model results explained 47% of TAC and 34% of harvests. The effects of upwelling were comparatively stronger to the effects of the area (hectares) and the number of fisher members of the TURF. In addition, models estimates showed negative inter-annual trends during the study period, for TAC and harvests, and that these differed as function of upwelling variability. Understanding the role of upwelling gives objective criteria to begin addressing the differential role that social and environmental aspects play in overall TURF performance, allowing to begin hypothesizing over socially driven deviances from predicted patterns.

中文翻译：

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探索上升流对在智利沿海渔业制度下管理的底栖腹足动物的总允许捕获量和收获量的影响。

摘要 虽然人们对上升流对海洋生态系统功能的影响有了广泛的了解，但将这一过程与商业物种上岸联系起来的经验数据并未得到应有的关注。本研究的目的是探索沿海上升流在确定底栖渔业总允许捕捞量 (TAC) 和收获方面的作用，通过一项将领土用户权利分配给智利海岸沿线的渔民 (TURF) 的政策进行管理。我们使用官方历史 TAC (217 TURFs) 和收获数据 (224 TURFs) 获取 TURF 系统最重要的底栖腹足动物资源之一（“Loco”，Concholepas concholepas）。TAC 和收获数据的范围从 2001 年到 2018 年，用于探索与季节性沿海上升流指数的关系，该指数源自时空分解，同一研究区域和时期的海面温度。使用贝叶斯广义线性多级模型（TURFs 作为组级效应），我们显示了上升流对 TAC 和 Loco 收获的积极和显着影响。模型结果解释了 47% 的 TAC 和 34% 的收成。上升流的影响相对于面积（公顷）和 TURF 的渔民人数的影响相对更强。此外，模型估计在研究期间显示了 TAC 和收成的负年际趋势，并且这些随着上升流变异性而不同。了解上升流的作用为开始解决社会和环境因素在整体 TURF 性能中发挥的不同作用提供了客观标准，