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Grey Seals (Halichoerus grypus) as Bioprobes: Fine-Scale Measurements of Oceanographic Properties using an Instrumented Large Marine Predator
Progress in Oceanography ( IF 4.1 ) Pub Date : 2020-11-01 , DOI: 10.1016/j.pocean.2020.102453
B.V.R. Nowak , W.D. Bowen , D.C. Lidgard , S.J. Iverson

Abstract Obtaining high resolution data on the physical and biological conditions in marine ecosystems is needed to better understand the impacts of environmental variability. The instrumentation of deep-diving, large marine predators has proven useful in sampling these conditions below the surface at fine spatio-temporal scales that would otherwise be extremely challenging. Data were retrieved from 94 grey seals (Halichoerus grypus; 25 males, 69 females) instrumented with Mk10-AF FastlocTM GPS devices on Sable Island, Nova Scotia, Canada between 2009 and 2015. These devices were programmed to record high resolution location data every 15 minutes as well as depth (m), temperature (°C), and light level every 10 s during dives. Oceanographic data from 595,866 dive profiles were used to estimate mixed layer depth, sea-surface temperature, upper-water column temperature, and chlorophyll-a concentration. Sampling covered about 70% of the Scotian Shelf, with a monthly average of about 26%. These data allow for monitoring of areas that are ecologically important and serve to complement other methods of oceanographic sampling.

中文翻译:

灰海豹(Halichoerus grypus)作为生物探针:使用仪器化的大型海洋捕食者对海洋学特性进行精细测量

摘要 需要获得海洋生态系统物理和生物条件的高分辨率数据,以更好地了解环境变化的影响。深潜大型海洋捕食者的仪器已被证明有助于在精细的时空尺度下对地表以下的这些条件进行采样,否则将极具挑战性。数据是从 2009 年至 2015 年在加拿大新斯科舍省 Sable 岛使用 Mk10-AF FastlocTM GPS 设备的 94 只灰海豹(Halichoerus grypus;25 只雄性,69 只雌性)中检索到的。这些设备被编程为每 15 次记录高分辨率位置数据分钟以及潜水期间每 10 秒的深度 (m)、温度 (°C) 和光照水平。来自 595,866 个潜水剖面的海洋学数据用于估计混合层深度、海面温度、上水柱温度和叶绿素 a 浓度。抽样覆盖了苏格兰大陆架约 70% 的区域,每月平均约为 26%。这些数据允许监测具有重要生态意义的区域,并有助于补充其他海洋采样方法。
更新日期:2020-11-01
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