Ecological drivers of nitrogen cycling and primary productivity in changing Arctic and sub-arctic seas.

与加拿大接壤的海洋生态系统提供了许多具有经济、社会和环境价值的好处，包括维持物种和生境的多样性，支持食物网、文化、沿海生计、资源开采、碳储存和气候调节。这些服务受到的气候驱动压力在北冰洋最快和最深，那里的海洋以不同的方式受到变暖、酸化、海冰消亡以及随之而来的淡水负荷和上层海洋动态变化的影响。由于这些变化必然会影响初级生产，初级生产为海洋生产的可收获资源数量及其对碳储存和气候调节的影响设定了上限，

The marine ecosystems bordering Canada provide numerous benefits of economic, societal and environmental value, including maintenance of the diversity of species and habitats that support food webs, culture, coastal livelihoods, resource extraction, carbon storage and climate regulation. Climate-driven pressures on those services are fastest and deepest in the Arctic Ocean (AO), where the ocean is impacted in different concurrent ways by warming, acidification, the demise of sea ice and ensuing changes in freshwater loading and upper ocean dynamics. Because these changes necessarily impact primary production, which sets an upper limit to the amount of harvestable resources produced by the sea and its impact on carbon storage and climate regulation, the