AbstractSeasonal variations in primary production (PP) in the Kara Sea are underresearched. Previous studies on'/> Spatial and vertical variability of primary production in the Kara Sea in July and August 2016: the influence of the river plume and subsurface chlorophyll maxima
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首页> 外文期刊>Polar biology >Spatial and vertical variability of primary production in the Kara Sea in July and August 2016: the influence of the river plume and subsurface chlorophyll maxima
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Spatial and vertical variability of primary production in the Kara Sea in July and August 2016: the influence of the river plume and subsurface chlorophyll maxima

机译：2016年7月和2016年8月卡拉海初级生产的空间和垂直变化：河羽和地下叶绿素最大值的影响

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AbstractSeasonal variations in primary production (PP) in the Kara Sea are underresearched. Previous studies only collected data during autumn or in late summer. However, the middle of summer is close to the beginning of the growing season, when PP can contribute significantly to annual water column integrated primary production (IPP). In addition, differences can be expected in the spatial and vertical distribution of phytoplankton communities in this period. This gap in midsummer data was addressed within the framework of a multidisciplinary research cruise by the R/V “Akademik Mstislav Keldysh” (from 15 July to 18 August 2016). High values of IPP (> 200 mgC m−2 day−1) and surface chlorophylla(Chl a) concentration (Chl0 > 1 mg m−3) were associated with the Ob–Yenisey river plume, located in the central part of the Kara Sea. Beyond the influence of the plume, in the western and southwestern regions of the Kara Sea, well-pronounced subsurface chlorophyll maxima (SCM) were observed. In some cases, the Chl aconcentration in SCM exceeded Chl0by two orders of magnitude. SCM were often accompanied by subsurface PP maxima (SPM). At stations where SCM was pronounced, IPP values reached 500–800 mgC m−2 day−1, and > 30 % of IPP was accounted for by SPM-integrated PP. Thus, in the middle of summer in the Kara Sea, IPP was linked with the chlorophyll-specific phytoplankton biomass and depended on the strength of the SCM.
机译：<抽象ID =“ Abs1”语言=“ En” OutputMedium =“ All”> 摘要 <段落ID =“ Par1”>对卡拉海初级生产（PP）的季节性变化的研究不足。先前的研究仅在秋季或夏季末收集数据。但是，夏季中期接近生长季节的开始，那时PP可以显着促进年度水柱综合初级生产（IPP）。此外，在此期间，浮游植物群落的空间和垂直分布可能会有差异。 R / V“ Akademik Mstislav Keldysh”（2016年7月15日至2016年8月18日）在多学科研究巡航的框架内解决了仲夏数据的这一差距。 IPP（> 200 mgC m <上标> −2 天<上标> -1 ）和表面叶绿素的高值 a （Chl a ）浓度（Chl 0 −3 ）与位于中部的Ob–Yenisey河羽状流有关卡拉海的一部分。除了羽流的影响外，在卡拉海的西部和西南部地区，还发现了发音明显的地下叶绿素最大值（SCM）。在某些情况下，SCM中的Chl a 浓度超过Chl 0 两个数量级。 SCM常常伴有地下最大PP（SPM）。在宣告SCM的站点上，IPP值达到500-800 mgC m -2 day -1 ，并且> 30％的IPP由SPM集成的PP所占。因此，在卡拉海的夏季中旬，IPP与叶绿素特异性浮游植物的生物量有关，并取决于SCM的强度。

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