The Mesopelagic-Boundary Community: Distribution and Movements

该项目将研究最近发现的一个中层水域 在晚上，这个社区在开放的水域占据主导地位， 夏威夷群岛的上斜坡。 这种独特的边界 在沃茨中发现的群落深度约为 400.700 m，似乎经历了昼夜垂直迁移， 通过水平迁移到外海岸（即100米） 底部深度）栖息地。本研究的主要目的是 明确界定该社区的生境要求，并 确定近海的范围和大小。近海 分布，因此，范围和幅度 水平移动或迁移，以及（2） 物种相对丰度的不同坡度水深测量， 动物的总体丰度，以及 水平运动。抽样策略包括定量 用大网取样，真实的。 通过声纳系统和现场观察发现， 使用双鱼座V潜水器拍摄动物的日间栖息地。 海流场的各个方面将在 多普勒海流剖面仪，系泊海流 米和卫星。

This project will examine a recently discovered midwater community that dominates the open water realm at night over the upper slope of the Hawaiian Islands. This distinctive boundary community is found in waters over bottom depths of approximately 400.700 m and appears to undergo diel vertical migration followed by horizontal migrations into the outer coastal (i.e. the 100m bottom depth) habitat. The major objective of this study is to define clearly the habitat requirements of this community and to determine the extent and magnitude of the inshore.offshore distributions and, thereby, the extent and magnitude of horizontal movements or migrations, and (2) the effect of differing slope bathymetry on the relative abundance of species, the overall abundance of the animals, and on the patterns of horizontal movement. The sampling strategy includes quantitative sampling with large nets, real.time observations of the fauna as revealed by a sonar system and >in> >situ> observations to confirm the daytime habitat of the fauna using the PISCES V submersible. Various aspects of the ocean current field will be measured at the study sites by a doppler current profiler, a moored current meter and satellites.