Temporal Variation in Deep-Sea Benthic Boundary Layer Communities: Long Time-Series Measurements

深海底栖边界层群落的时间变化：长时间序列测量

• 批准号: 8922620
• 负责人: Kenneth Smith
• 金额: $ 43万
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-06-01 至 1993-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8922620&HistoricalAwards=false
• 关键词: Temporal; Variation; Deep; Sea; Benthic

The importance of long time-series studies for examining temporal variation in marine communities is widely accepted. Although seasonal sampling and measurements have shed much light on the temporal variability of biological processes in the deep sea, it has been difficult to understand many aspects of the functioning of these communities without a "continuous" record of certain biologically significant processes over longer time periods. This project will conduct a long time-series monitoring program (2yrs) of a benthic boundary layer community using time-lapse photography to monitor sea floor processes and particulate flux measurements as an estimate of food supply entering the benthic boundary layer. Such monitoring will provide a temporal framework for more intensive seasonal measurements of benthic processes at a single deep bottom station in the California Current upwelling system where strong seasonality in primary production at the surface and in particulate organic matter (POM) flux at deep bottom depths is well established. Dr. Smith will address two major questions: 1) Is there a temporal relationship (that is a coupling) between the flux of particulate organic matter (POM) entering the benthic boundary layer (BBL) and the arrival and residence of detritus at the sediment water interface? 2) Is there a temporal relationship between the distribution, abundance, movements, and nutritional state of large bottom dwelling organisms and the flux of POM entering the BBL and/or the arrival and residence of detritus at the sediment-water interface? This study will improve our understanding of the functioning of deep-sea benthic boundary layer communities and their importance in biogeochemical cycling over interannual time scales.

长时间序列研究对检查时间序列的重要性 海洋生物群落的多样性已被广泛接受。虽然 季节性的采样和测量揭示了 深海生物过程的时间变异性， 很难理解功能的许多方面 这些社区没有“连续”的记录， 在较长的时间内进行生物学上重要的过程。这 该项目将进行长期的时间序列监测计划 （2yrs）的底栖边界层群落的时间推移 摄影监测海底过程和微粒通量 作为估计进入海底的食物供应量的测量 边界层这种监测将提供一个时间框架 进行更深入的季节性海底过程测量， 加州洋流上升流中的一个深海底观测站 系统中，初级生产的季节性很强， 表层和深层颗粒有机物（POM）通量 底部深度已确定。 史密斯博士将向两个 主要问题：1）是否存在时间关系（即 颗粒有机物（POM）通量之间的耦合 进入海底边界层，到达和 碎屑在沉积物-水界面上的滞留？2)是 分布之间存在时间关系， 大底鱼的丰度、运动和营养状态 居住生物和POM进入BBL的通量和/或 碎屑在沉积水中的到达和滞留 接口？这项研究将增进我们对 深海底边界层群落的运作， 它们在年际地球化学循环中的重要性 鳞片