Productivity in the barents sea--response to recent climate variability.
Productivity in the barents sea--response to recent climate variability.
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DOI：
10.1371/journal.pone.0095273
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发表时间：
2014
期刊：
影响因子：
3.7
通讯作者：
Ottersen G
中科院分区：
文献类型：
--
作者：
Dalpadado P;Arrigo KR;Hjøllo SS;Rey F;Ingvaldsen RB;Sperfeld E;van Dijken GL;Stige LC;Olsen A;Ottersen G
使用遥感数据，观测和耦合的物理-生物模型的时间和空间动态的初级和次级生物量/生产在巴伦支海自20世纪90年代末进行检查。浮游动物生物量的实地观测，叶绿素a数据的断面（不同季节）和大规模的调查（秋季）用于验证遥感产品和建模结果。验证表明，卫星数据非常适合于研究巴伦支海叶绿素a的时空动态，该模型是估算次级生产力的一个重要工具。温度，开放水域面积，叶绿素a和浮游动物生物量显示大的年际变化在巴伦支海。气候变率在北方和东部最强。本研究中净初级生产力的适度增加很可能是生态系统对同期气候变化的反应。开放水域面积的增加和开放水域季节的持续时间，这是与温度升高，似乎是发生在该生态系统的北方和东部地区的年度净初级生产力的变化的关键驱动力。浮游动物生物量的时间和空间变异性似乎在很大程度上控制捕食压力。在巴伦支海东南部，叶绿素a和浮游动物生物量之间，以及净初级生产量和鱼类生物量之间的统计学显着的联系，表明自下而上的营养相互作用，在这一地区。
The temporal and spatial dynamics of primary and secondary biomass/production in the Barents Sea since the late 1990s are examined using remote sensing data, observations and a coupled physical-biological model. Field observations of mesozooplankton biomass, and chlorophyll a data from transects (different seasons) and large-scale surveys (autumn) were used for validation of the remote sensing products and modeling results. The validation showed that satellite data are well suited to study temporal and spatial dynamics of chlorophyll a in the Barents Sea and that the model is an essential tool for secondary production estimates. Temperature, open water area, chlorophyll a, and zooplankton biomass show large interannual variations in the Barents Sea. The climatic variability is strongest in the northern and eastern parts. The moderate increase in net primary production evident in this study is likely an ecosystem response to changes in climate during the same period. Increased open water area and duration of open water season, which are related to elevated temperatures, appear to be the key drivers of the changes in annual net primary production that has occurred in the northern and eastern areas of this ecosystem. The temporal and spatial variability in zooplankton biomass appears to be controlled largely by predation pressure. In the southeastern Barents Sea, statistically significant linkages were observed between chlorophyll a and zooplankton biomass, as well as between net primary production and fish biomass, indicating bottom-up trophic interactions in this region.
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影响因子：
56.9
作者：
Arrigo, Kevin R.;Perovich, Donald K.;Swift, James H.
通讯作者：
Swift, James H.
DOI：
10.1016/j.dsr2.2008.05.016
发表时间：
2008-10-01
影响因子：
3
作者：
Dalpadado, Padmini;Yamaguchi, Atsushi;Johannessen, Signe
通讯作者：
Johannessen, Signe
影响因子：
2.6
作者：
Edvardsen, A;Slagstad, D;Jaccard, P
通讯作者：
Jaccard, P
影响因子：
3.3
作者：
Boitsov, Vladimir D.;Karsakov, Alexey L.;Trofimov, Alexander G.
通讯作者：
Trofimov, Alexander G.
影响因子：
3.6
作者：
Arrigo, Kevin R.;van Dijken, Gert L.
通讯作者：
van Dijken, Gert L.