Arctic complexity: a case study on diel vertical migration of zooplankton.
Arctic complexity: a case study on diel vertical migration of zooplankton.
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DOI：
10.1093/plankt/fbu059
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发表时间：
2014-09
影响因子：
2.1
通讯作者：
Majaneva S
中科院分区：
文献类型：
--
作者：
Berge J;Cottier F;Varpe O;Renaud PE;Falk-Petersen S;Kwasniewski S;Griffiths C;Søreide JE;Johnsen G;Aubert A;Bjærke O;Hovinen J;Jung-Madsen S;Tveit M;Majaneva S
浮游动物的垂直迁移是一种全球性现象，具有海洋和湖泊环境的特征。在高纬度地区，DVM的模式已经被记录下来，但关于哪些物种执行这种生态重要行为的知识却很少。此外，在北极，浮游动物群落的垂直迁移组成部分通常被认为是一个单一的声散射层（SSL），执行由环境光直接控制的同步迁移模式。在这里，我们提供了迄今为止未知的北极海洋系统复杂性的证据，浮游动物在水柱中形成多个聚集，通过声学被视为不同的SSLs。我们发现，虽然秋分期间DVM的开始是光介导的，但白天迁移者的垂直定位更多地与水团的热特性有关，而不是与辐照度有关。在夜间，浮游植物生物量被证明是决定所有迁移类群垂直定位的最重要因素。此外，我们开发了一种以声音图像（SI）形式表示声学数据的新方法，该方法可以根据每个潜在散射体的反向散射理论贡献直接比较其相对重要性。根据我们对不同地点和不同水文的比较，我们得出结论，北极的持续变暖可能导致整个北极海洋系统出现更复杂的过渡带。
Diel vertical migration (DVM) of zooplankton is a global phenomenon, characteristic of both marine and limnic environments. At high latitudes, patterns of DVM have been documented, but rather little knowledge exists regarding which species perform this ecologically important behaviour. Also, in the Arctic, the vertically migrating components of the zooplankton community are usually regarded as a single sound scattering layer (SSL) performing synchronized patterns of migration directly controlled by ambient light. Here, we present evidence for hitherto unknown complexity of Arctic marine systems, where zooplankton form multiple aggregations through the water column seen via acoustics as distinct SSLs. We show that while the initiation of DVM during the autumnal equinox is light mediated, the vertical positioning of the migrants during day is linked more to the thermal characteristics of water masses than to irradiance. During night, phytoplankton biomass is shown to be the most important factor determining the vertical positioning of all migrating taxa. Further, we develop a novel way of representing acoustic data in the form of a Sound Image (SI) that enables a direct comparison of the relative importance of each potential scatterer based upon the theoretical contribution of their backscatter. Based on our comparison of locations with contrasting hydrography, we conclude that a continued warming of the Arctic is likely to result in more complex ecotones across the Arctic marine system.
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DOI：
10.1016/j.dsr.2009.10.005
发表时间：
2010-01-01
影响因子：
2.4
作者：
Cisewski, Boris;Strass, Volker H.;Kraegefsky, Soeren
通讯作者：
Kraegefsky, Soeren
影响因子：
3.6
作者：
Cottier, F;Tverberg, V;Griffiths, C
通讯作者：
Griffiths, C
影响因子：
2.1
作者：
BOLLENS, SM;FROST, BW
通讯作者：
FROST, BW
影响因子：
5.2
作者：
Cavalieri, D. J.;Parkinson, C. L.
通讯作者：
Parkinson, C. L.
影响因子：
2.1
作者：
BOLLENS, SM;FROST, BW
通讯作者：
FROST, BW