Fine-scale vertical structure of sound-scattering layers over an east border upwelling system and its relationship to pelagic habitat characteristics
作者: Ndague DiogoulPatrice BrehmerYannick PerrotMaik TiedemannAbou ThiamSalaheddine El AyoubiAnne MougetChloé MigayrouOumar SadioAbdoulaye Sarré
作者单位: 1University Cheikh Anta Diop UCAD, Institute of EnvironmentalScience (ISE), BP 5005, Dakar, Senegal
2IRD, Univ. Brest, CNRS, Ifremer, LEMAR, Campus UCAD-IRD de Hann,Dakar, Senegal
3IRD, Univ. Brest, CNRS, Ifremer, LEMAR, DR Ouest, Plouzané,France
4Institute of Marine Research IMR, Pelagic Fish, P.O. Box 1870 Nordnes, 5817 Bergen, Norway
5Institut National de Recherche Halieutique INRH, Agadir, Morocco
6Institut Sénégalais de Recherches agricoles ISRA, Centre deRecherches Océanographiques de Dakar-Thiaroye (CRODT), BP 2221 Dakar,Senegal
刊名: Ocean Science, 2020, Vol.16 (1), pp.65-81
来源数据库: Copernicus Journal
DOI: 10.5194/os-16-65-2020
原始语种摘要: Understanding the relationship between sound-scattering layers (SSLs) andpelagic habitat characteristics is a substantial step to apprehend ecosystemdynamics. SSLs are detected on echo sounders representing aggregated marinepelagic organisms. In this study, SSL characteristics of zooplankton andmicronekton were identified during an upwelling event in two contrastingareas of the Senegalese continental shelf. Here a cold upwelling-influencedinshore area was sharply separated by a strong thermal boundary from adeeper, warmer, stratified offshore area. Mean SSL thickness and SSL verticaldepth increased with the shelf depth. The thickest and deepest SSLs wereobserved in the offshore part of the shelf. Hence, zooplankton andmicronekton seem to occur more frequently in stratified water...
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关键词翻译
关键词翻译
  • upwelling 涌出
  • micronekton 弱泳生物
  • layers 
  • vertical 垂线
  • zooplankton 浮游动物
  • relationship 关系
  • regularly 定期地
  • habitat 生境
  • SSL Source Statement Library
  • shelf 陆架