The Effectiveness of Poisons and Preservatives on Preventing the Decomposition of Organic Matter Collected in Sediment Traps

该提案的研究将调查常用毒药和防腐剂防止沉积物收集器中收集的有机物发生改变和分解的能力。 现场实验将在代表沿海和公海地区、最高生产力和最低生产力时期以及含氧和缺氧环境的条件下进行。 这些实验将测试不同毒物/防腐剂阻止单个化合物和化合物类别的相对分解速率的基本信息的能力，特别是对比好氧和缺氧盆地中的陆地和海洋材料。 将解决两个主要问题：1）各种毒物和防腐剂对沉积物收集器中收集的有机物的成分有何影响？ 2) 主要类别的生物化合物的保存分解程度是多少？ 回答这些问题的方法是确定沉积物中氯仿、盐梯度、福尔马林或抗生素中有机化合物（脂质、糖、氨基酸、色素和木质素氧化产物）的浓度。 现场实验将在不列颠哥伦比亚省萨尼奇湾的含氧和缺氧水域以及百慕大附近的时间序列 S 站进行。

The proposal research will investigate the ability of commonly-used poisons and preservatives to prevent alteration and decomposition of organic matter collected in sediment traps. In-situ experiments will be conducted under conditions which represents both coastal and open ocean areas, periods of maximum high and low productivity, and oxic and anoxic environments. The experiments will test the ability of different poisons/preservations to prevent fundamental information on the relative decomposition rates of individual compounds and compound classes, specifically contrasting terrigenous and marine material in oxic and anoxic basins. Two major questions will be addressed: 1) what is the effectiveness of various poisons and preservations on the composition of organic matter collected in sediment traps; and 2) what is the extent of decomposition of preservation of the major classes of biogenic compounds? The approach of answering these questions will be to determine concentrations of organic compounds (lipids, sugars, amino acids, pigments, and lignin oxidation products) in sediment traps chloroform, salt gradient, formalin, or antibiotics. Field experiments will be Saanich Inlet, British Columbia, in oxic and anoxic waters, and at the time-series Station S off Bermuda.