School of Biological & Marine Sciences, University of Plymouth, Drake Circus, Plymouth, Devon, PL4 8AA, UK.
School of Geography, Earth & Environmental Sciences, University of Plymouth, Drake Circus, Plymouth, Devon, PL4 8AA, UK.
Mar Environ Res. 2020 Dec;162:105134. doi: 10.1016/j.marenvres.2020.105134. Epub 2020 Sep 6.
Multi-use marine protected areas (MPAs) are increasingly designated towards achieving global conservation targets. To develop effective management, the impact of permitted activities must be understood. Potting for shellfish occurs on temperate rocky reefs globally with impact not fully quantified. This UK-based study used underwater video to quantify (a) benthic condition of rocky reefs, (b) mechanisms of potting interaction and (c) true footprint of potting. Assemblages in static gear areas were more indicative of a healthy reef than those in mixed gear areas. Damage was recorded during pot hauling, but the area of damage was not the entire pot haul path. 25-30% of individuals were damaged (commonly through tissue abrasion) or removed. Notably, damage occurred to some long-lived, slow growing taxa raising concerns over impacts. Potting is more destructive than previously thought and managers must balance ecology with social and economic considerations to determine what level of impact is acceptable.
多用途海洋保护区（MPA）的指定越来越多地针对实现全球保护目标。为了制定有效的管理措施，必须了解允许的活动的影响。全球温带岩石礁区都有贝类采挖活动，但尚未完全量化其影响。这项基于英国的研究使用水下视频来量化（a）岩石礁的底栖状况，（b）采挖的相互作用机制，以及（c）采挖的真实足迹。固定渔具区的生物组合比混合渔具区更能反映健康的珊瑚礁。在采挖过程中记录到了损坏，但损坏的区域并不是整个采挖路径。25-30%的个体受到损坏（通常是通过组织擦伤）或被移除。值得注意的是，一些生长缓慢、寿命长的生物也受到了损害，这引起了人们对其影响的担忧。贝类采挖比之前认为的更具破坏性，管理者必须在生态与社会经济因素之间进行平衡，以确定可接受的影响程度。
