SeaMap Tasmania benthic habitat map

The SeaMap Tasmania project undertook mapping of seafloor habitats across the nearshore Tasmanian coastline (0-40 m) - the first state to compile a statewide asssimilated benthic habitat dataset.This initiative comprised of collating aerial photography (from archives), acoustic mapping, and conducting underwater video surveys and field-based visual observations. From this, 1:25,0000 scale habitat maps were created for shallow coastal water to within 1.5 km of the coastline (or 40m depth, which ever was arrived at first).Depth information was collected via acoustic methods and used to discriminate seafloor habitat type, in combination with scanned aerial photographs and towed video transects providing ground-truthing information. See 'Lineage' section of this record for full methodology and data dictionary.This data is also available via the Seamap Australia National Benthic Habitat Layer - a nationally consolidated benthic habitat map.https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/4739e4b0-4dba-4ec5-b658-02c09f27ab9a

SeaMap Tasmania项目（SeaMap Tasmania）开展了塔斯马尼亚近岸海岸线（0至40米水深范围）的海底生境测绘工作——该项目所属的塔斯马尼亚州是首个编制全州整合式底栖生境（benthic habitat）数据集的行政区。本项目整合了档案馆藏的航空摄影资料、声学测绘数据，并开展了水下视频勘测与野外实地目视观测工作。基于上述工作，研究团队为距海岸线1.5公里范围内（或水深达40米时，以先满足的条件为准）的浅近岸海域编制了比例尺为1:250000的生境地图。研究通过声学方法采集水深数据，并结合扫描航空摄影资料与拖曳视频样带提供的地面验证（ground-truthing）数据，用以区分海底生境类型。完整的研究方法与数据字典可参见本记录的"谱系（Lineage）"章节。本数据集亦可通过《澳大利亚全国底栖生境图层》（Seamap Australia National Benthic Habitat Layer）获取，该图层为全国整合的底栖生境地图。相关元数据可访问：https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/4739e4b0-4dba-4ec5-b658-02c09f27ab9a