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

毒药和防腐剂防止沉积物收集器中收集的有机物分解的有效性

基本信息

批准号：
8717976
负责人：
Stuart Wakeham
金额：
$ 19.76万
依托单位：
Skidaway Institute of Oceanography
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
1987
资助国家：
美国
起止时间：
1987-10-15 至 1991-09-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=8717976&HistoricalAwards=false
关键词：
Effectiveness Poisons Preservatives Preventingthe Decomposition

项目摘要

The proposed 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 represent 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/preservatives to prevent compositional changes of organic matter in sediment traps and will provide 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 preservatives on the composition of organic matter collected in sediment traps; and 2) what is the extent of decomposition or preservation of the major classes of biogenic compounds? The approach to answering these questions will be to determine concentrations of organic compounds (lipids, sugars, amino acids, pigments, and lignin oxidation products) in sediment traps which have been unpoisoned or which have been treated with HgC12, NaN3, chloroform, salt gradient, formalin, or antibiotics. Field experiments will be conducted in Dabob Bay, Washington, during low and high productivity, in Saanich Inlet, British Columbia, in oxic and anoxic waters, and at the time-series Station "S" off Bermuda.

拟议的研究将调查常用的毒药和防腐剂防止沉积物捕获器中收集的有机物的改变和分解的能力。现场实验将在代表沿海和开阔海域、最高生产力和最低生产力时期以及氧气和缺氧环境的条件下进行。这些实验将测试不同毒药/防腐剂防止沉积物陷阱中有机物组成变化的能力，并将提供有关个别化合物和化合物类别相对分解率的基本信息。特别对比了含氧盆地和缺氧盆地的陆源和海相物质。本文将讨论两个主要问题：1)各种毒物和防腐剂对沉积物捕集器中收集的有机物组成的影响是什么；2)主要生物源化合物的分解或保存程度如何？回答这些问题的方法将是确定未中毒或用HgC12、NaN3、氯仿、盐梯度、福尔马林或抗生素处理过的沉积物捕集器中有机化合物（脂类、糖、氨基酸、色素和木质素氧化产物）的浓度。将在生产力低和高期间在华盛顿州达布湾、在不列颠哥伦比亚省萨尼奇湾、在有氧和无氧水域以及在百慕大外的时序“S”站进行实地试验。