Contents and benthic fluxes of nutrients in sediment pore water of the Southern Ocean

Abstract

Abstract:

The concentration and profile characters of nutrients in sediment pore water of the South Ocean, sampled during the cruise of CH INARE-18 of the austral summer 2001/02 were determined. The results show that the content of SiO₃-Si and NH₄-N were much higher than other nutrients. The profile of SiO₃-Si was characterized
with sharp gradients near the sediment-water interface, profile distribution of silicate show that during the diagenetic reaction of silicate, dissolution was the main part. The organic matter decomposition was occurred under the anaerobic condition. Benthic fluxes of SiO₃-Si, NH₄-N were from pore water to overlyingwater, and regeneration of silicate and ammonium were the main part of the nutrient regeneration from the pore water of the study area.

Key words: nutrient, interstitialwater, sediment, the South Ocean

Hu Chuanyu, Xue Bin, Liu Xiaohan, Pan Jianming. Contents and benthic fluxes of nutrients in sediment pore water of the Southern Ocean[J]. ADVANCES IN POLAR SCIENCE, 2009, 20(1-English): 40-47.

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Contents and benthic fluxes of nutrients in sediment pore water of the Southern Ocean

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