Inshore Gulf of Maine Survey of Atlantic Herring Sentinel Spawning Grounds: Acoustic time and location data from the F/V Jennifer & Emily NEC-JA2005-1 from the Gulf of Maine, 2006 (NEC-CoopRes project)

<p><strong>Inshore Gulf of Maine Survey of Atlantic Herring Sentinel Spawning Grounds Year 6 - Acoustic time and location data</strong></p> <p>This dataset contains date, time and position data for acoustic transects taken during 7 cruises in 2006.</p> <p>This project was designed to acoustically monitor the locations, timing, and biomass levels of prespawning and spawning aggregations of Atlantic herring on significant \"sentinel\" spawning grounds. The western portion of the Gulf of Maine (Figure 4), which encompasses Jeffreys Ledge, Scantum Basin, and the coastal waters from Cape Ann, MA to Cape Porpoise, ME was chosen for a trial of this sentinel survey approach. The long-term goal is to extend the sentinel survey model to additional areas in the nearshore Gulf of Maine. Specific information collected on the timing and locations of spawning Atlantic herring will allow comparison with historical distributions and abundance of spawning Atlantic herring and provide insight into the relative importance of this region for spawning Atlantic herring.</p><p><strong>缅因湾近岸大西洋鲱哨兵产卵场（Sentinel Spawning Grounds）第6年调查——声学时间与位置数据</strong></p><p>本数据集收录了2006年7次科考航次中声学断面调查（acoustic transects）所获取的日期、时间与位置数据。</p><p>本项目旨在通过声学监测手段，追踪典型"哨兵产卵场（sentinel spawning grounds）"内大西洋鲱预产卵与产卵集群的位置、产卵时序及生物量水平。本次试验选取缅因湾西部海域（图4）作为研究区域，该海域涵盖杰弗里斯海台（Jeffreys Ledge）、斯坎顿海盆（Scantum Basin），以及从马萨诸塞州安角至缅因州波普斯角的近岸水域。本项目的长期目标是将哨兵调查模型推广至缅因湾近岸的其他海域。本次调查所收集的大西洋鲱产卵时序与位置的精准数据，可用于与大西洋鲱产卵活动的历史分布与资源丰度进行对比，同时有助于解析该海域在大西洋鲱产卵活动中的相对重要性。</p>