Towed Video - Benthic survey of Douglas Shoal (17-Apr-2010 - 18-Apr-2010 )

This data consists of 5097 records derived from 8 tows covering 16.692 km at 3.27m resolution, over a depth range of 7.7 to 22.0 meters. Classification of the benthos and substrate was based on 17 benthic classes and 6 substrate classes.Summary of the primary benthic categories recordedMacroalgae and Filter feeders 32.29%Hard Coral 7.10%Macroalgae 50.95%NoBenthos 9.65%Summary of substrates recordedRubble 1.39%Grounding 8.10%Sand 5.47%Limestone 85.03%A custom interface has been developed by AIMS staff for reading Towed Video tapes.

本数据集共包含5097条记录，源自8次拖曳作业，作业覆盖范围达16.692千米，空间分辨率为3.27米，作业水深区间为7.7至22.0米。底栖生物（benthos）与底质（substrate）的分类体系共涵盖17个底栖生物类别与6个底质类别。已记录的主要底栖生物类别占比汇总如下：大型藻类（Macroalgae）与滤食性生物占32.29%、硬珊瑚（Hard Coral）占7.10%、大型藻类占50.95%、无底栖生物占9.65%。已记录的底质类别占比汇总如下：碎石（Rubble）占1.39%、固结底质（Grounding）占8.10%、沙质底（Sand）占5.47%、石灰岩（Limestone）占85.03%。澳大利亚海洋科学研究所（Australian Institute of Marine Science, AIMS）的工作人员已开发出一款定制化界面，用于读取拖曳式录像带（Towed Video tapes）数据。