Benthic carbon turnover, sediment pigment concentrations and sinking fluxes of POC in the southeastern Beaufort Sea during CCGS Amundsen cruise 2008

The effects of changing ice and atmospheric conditions on the upwelling of deep nutrient-laden waters and biological productivity in the coastal Beaufort Sea were quantified using a unique combination of in situ and remote-sensing approaches. Repeated instances of ice ablation and upwelling during fall 2007 and summer 2008 multiplied the production of ice algae, phytoplankton, zooplankton and benthos by 2 to 6 fold. Strong wind forcing failed to induce upward shifts in the biological productivity of stratified waters off the shelf.

本研究通过原位（in situ）观测与遥感（remote sensing）技术的独特结合方案，定量分析了海冰与大气条件变化对波弗特海（Beaufort Sea）沿岸海域富营养深层海水上升流及生物生产力的影响。2007年秋季与2008年夏季期间，海冰消融（ice ablation）与上升流的反复出现，使得冰藻（ice algae）、浮游植物（phytoplankton）、浮游动物（zooplankton）及底栖生物（benthos）的生物量提升2至6倍。然而强劲的风强迫（wind forcing）并未引发陆架外层化水体（stratified waters）的生物生产力出现向上提升的现象。