Mapping inshore fisheries: Comparing observed and perceived distributions of pot fishing activity in Northumberland
Mapping inshore fisheries: Comparing observed and perceived distributions of pot fishing activity in Northumberland
复制标题
绘制近海渔业图：比较诺森伯兰郡盆栽捕捞活动的观测和感知分布
DOI：
10.1016/j.marpol.2014.08.005
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发表时间：
2015
期刊：
影响因子：
3.8
通讯作者：
S. Stead
中科院分区：
文献类型：
--
作者：
R. Turner;N. Polunin;S. Stead
海洋空间规划（MSP）作为基于生态系统的海洋资源管理方法的一部分日益得到推广。MSP对近岸渔业的影响可能特别大，然而，尽管它们很脆弱，但由于数据稀缺，评估空间措施对近岸渔业的潜在影响受到限制，而且人们对不同数据源产生的捕捞活动模式的可比性了解甚少。本研究通过描述英国诺森伯兰郡四个港口的龙虾捕捞活动分布，使用两种空间数据来源：巡逻船观察到的渔船目击和通过与当地渔民访谈得出的感知捕捞活动，为围绕MSP信息需求的辩论做出了贡献。利用Mantel测试和确定的捕捞热点重叠，探讨了两个数据集绘制的盆栽活动分布的可比性。所有港口的捕鱼活动都趋向于聚集或不均匀分布，热点地区位于靠近船舶驻港的近海地区。这两个数据集在每个港口都是相关的，尽管相关强度因港口而异，在渔业活动高度聚集的港口更大。结果表明，船只目击可能更好地代表了捕鱼活动的可变强度，而访谈数据可能更准确地捕捉到对渔民重要的场地的绝对范围。本研究突出了目前用于为渔业管理和海洋养护规划提供信息的两种现有数据来源的一些优点和局限性，并概述了一种评估描述活动空间分布的数据集一致性的方法。考虑到单个数据集的局限性，我们建议对现有数据进行三角测量，以告知MSP，同时对渔民的行为进行定性分析。
Marine spatial planning (MSP) is increasingly promoted as part of an ecosystem-based approach to marine resource management. Impacts of MSP may be particularly great in inshore fisheries, yet despite their vulnerability, assessing potential impacts of spatial measures on inshore fisheries is limited by data scarcity, and the comparability of patterns of fishing activity produced by different data sources is poorly understood. This study contributes to the debate around information needs for MSP by describing the distribution of lobster potting activity at four ports in Northumberland, UK, using two sources of spatial data: observed fishing vessel sightings by patrol vessels and perceived fishing activity elicited through interviews with local fishers. The comparability of the distributions of potting activity mapped by the two datasets was explored using Mantel tests and overlap of fishing hotspots identified. Fishing activity at all ports tended towards an aggregated or patchy distribution, with hotspots located in inshore areas in close proximity to vessels׳ home ports. The two datasets were correlated at each port, though the strength of correlation varied among ports, being greater in ports with more highly aggregated fishing activity. Results suggest that vessel sightings are likely to better represent variable intensity of fishing activity, while interview data may more accurately capture the absolute extent of grounds important to fishers. This study highlights some of the merits and limitations of two available data sources currently used to inform fisheries management and marine conservation planning, and outlines an approach to assessing the consistency of datasets in describing the spatial distribution of activity. Given the limitations of individual datasets, we recommend triangulation of available data to inform MSP, alongside qualitative data on fishers׳ behaviour.