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首页> 外文期刊>ICES Journal of Marine Science >Spatial and temporal changes in pot-fishing effort and habitat use
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Spatial and temporal changes in pot-fishing effort and habitat use

机译:盆栽捕捞努力和栖息地使用的时空变化

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Habitat and fisheries usage data are key components for ecosystem-based approach to fisheries management (EBFM). Significant gaps in knowledge remain for fisheries-habitat interactions, particularly in inshore fisheries where vessels are <12 m in length. Here, we show changes in inshore fishing effort distribution (<12 m) and habitat use over the decade 2004-2013. Sightings data of fishing vessel activity recorded by the Northumberland Inshore Fishery and Conservation Authority (NIFCA) were combined with landings data to estimate and map potfishing activity between 2004 and 2013. Spatial temporal changes were investigated using Monte Carlo simulation of randomly sampled fishing effort maps. High resolution (1 m) broadscale (EUNIS level 3) predictive habitat maps of the Coquet to St Marys' Marine Conservation Zone (CQSM MCZ) were used to investigate spatial temporal changes in fishers' habitat selection using compositional analysis. Fishing effort in Northumberland increased between 2004 and 2013 (233 642-354 193 pots year(-1)). Fishing effort distribution differed between individual years, decreasing over large areas between 2004 and 2007, followed by increases, especially inshore, between 2008 and 2013. Fishers in the CQSM MCZ showed a preference for rocky habitats over sediment habitats. Habitat preference did not vary between years although all habitats experienced increasing fishing pressure. Spatial temporal changes in fishing effort and habitat use were discussed in relation to EBFM.
机译:栖息地和渔业使用数据是基于生态系统的渔业管理方法的关键组成部分。渔业与栖息地的相互作用仍然存在巨大的知识空白,特别是在船只长度小于12 m的近岸渔业中。在这里,我们显示了2004-2013十年间近海捕捞努力分布(<12 m)和栖息地使用的变化。将诺森伯兰郡近海渔业和保护局(NIFCA)记录的渔船活动的观测数据与着陆数据相结合,以估计和绘制2004年至2013年之间的垂钓活动。使用蒙特卡洛模拟法对随机取样的捕捞努力图进行调查,调查了时空变化。 Coquet至St Marys海洋保护区(CQSM MCZ)的高分辨率(1 m)高分辨率大规模尺度(EUNIS 3级)预测栖息地地图,用于通过成分分析研究渔民栖息地选择的时空变化。在2004年至2013年间,诺森伯兰郡的捕捞努力有所增加(233 642-354 193盆年(-1))。捕捞努力量的分配在不同年份之间有所不同,在2004年至2007年期间大面积减少,随后在2008年至2013年之间增加,特别是在沿海地区。CQSMMCZ的渔民偏爱岩石栖息地,而不是沉积物栖息地。尽管所有栖息地的捕捞压力都在增加,但栖息地的偏好在多年之间没有变化。讨论了与EBFM有关的捕捞努力和栖息地使用的时空变化。

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