Darwin Harbour Middle Arm Benthic Habitat Mapping

This project updates the 2019 predictive benthic habitat map, extending past the subtidal zone of the harbour to include intertidal habitats. The project worked with collaborators to synthesise existing data sets for inclusion in benthic habitat mapping process. Hydrodynamic model variables were updated and new digital elevation data included to provide a more accurate representation of the bed shear stress, waves and current.

LiDAR surveys were conducted to fill in the gap between the IX bathymetric survey and the high tide water mark. The LiDAR survey data extended the existing bathymetry data.

A total of 30 Towed video transects were conducted in areas predicted to have a high probability of benthic fauna occurrence based on the existing predictive model.

The benthic habitat model was updated to include NTG historical data, new towed video data, hydrodynamic and light data.

本项目对2019年版底栖生境（benthic habitat）预测地图进行了更新，将制图范围从港口潮下带拓展至潮间带生境。本项目联合合作方整合现有数据集，用于底栖生境制图流程。本项目更新了水动力模型变量，并纳入新的数字高程数据，以更精准地刻画底切应力、波浪与流场特征。

为填补第九次测深调查与高潮线之间的数据空白，本项目开展了激光雷达（LiDAR）测量。本次激光雷达测量数据拓展了现有测深数据集的覆盖范围。

基于现有预测模型，本项目在底栖动物出现概率较高的区域共开展了30条拖曳视频样带调查。

本项目对底栖生境模型进行了更新，纳入了NTG历史数据、新增拖曳视频数据、水动力数据与光照数据。