Variation in zoobenthic blue carbon in the Arctic's Barents Sea shelf sediments.
Variation in zoobenthic blue carbon in the Arctic's Barents Sea shelf sediments.
复制标题
北极巴伦支海陆架沉积物中底栖动物蓝碳的变化。
DOI：
10.1098/rsta.2019.0362
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Souster TA
中科院分区：
文献类型：
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作者：
Souster TA
碳从大气流向沉积物动物群和沉积物减少了大气中的二氧化碳，从而减缓了变暖。在这里，在变化的北冰洋海底计划，我们使用类似的方法在南极（垂直，校准相机下降和拖网收集的标本）来计算整个巴伦支海的底栖动物碳的常备库存。在最北端（80-81.3° N，29-30° E）发现了最多的形态型、功能群和个体。排序（非公制多维尺度）建议的动物群过渡的渐变从南到北。尽管所有六个地点都是明显相似的泥浆，但功能组的主导地位在所有六个地点都有所不同。在我们测量的环境变量中，只有水流速度可以显著解释我们的空间碳差异。我们没有发现与海冰损失的明显关系，因此没有证据表明北极蓝碳气候反馈。巴伦支海的蓝碳含量可与南极大陆架沉积物中的最高水平相媲美。本文是主题“变化中的北冰洋：对生物群落、地球化学过程和生态系统功能的影响”的一部分。
The flow of carbon from atmosphere to sediment fauna and sediments reduces atmospheric CO2, which in turn reduces warming. Here, during the Changing Arctic Ocean Seafloor programme, we use comparable methods to those used in the Antarctic (vertical, calibrated camera drops and trawl-collected specimens) to calculate the standing stock of zoobenthic carbon throughout the Barents Sea. The highest numbers of morphotypes, functional groups and individuals were found in the northernmost sites (80–81.3° N, 29–30° E). Ordination (non-metric multidimensional scaling) suggested a cline of faunal transition from south to north. The functional group dominance differed across all six sites, despite all being apparently similar muds. Of the environmental variables we measured, only water current speed could significantly explain any of our spatial carbon differences. We found no obvious relationship with sea ice loss and thus no evidence of Arctic blue carbon–climate feedback. Blue carbon in the Barents Sea can be comparable with the highest levels in Antarctic shelf sediments.This article is part of the theme issue ‘The changing Arctic Ocean: consequences for biological communities, biogeochemical processes and ecosystem functioning'.