Dugong and Turtle seagrass habitats in the North-West Torres Strait

This dataset describes seagrass at 34 individual meadows from surveys of Dugong and Turtle habitats in the North-West Torres Strait for November 2015 and January 2016. The data includes information on seagrass species, biomass, diversity, and BMI and algae percent cover. This meadow (polygon) layer provides summary information for all survey sites within the 34 individual seagrass meadows mapped in 2015-2016 with information including individual meadow ID, meadow location (intertidal/shallow subtidal/subtidal), meadow density based on mean biomass, meadow area, dominant seagrass species, seagrass species present, survey dates, survey method, and data custodian. ESRI and Landsat satellite image basemaps were used as background source data to check meadow and site boundaries, and re-map where required.The data described by this record is current as of 01/12/2016 for use in the Seamap Australia project. Newer versions of the data, additional 'point' data for 853 sites, and alternative download formats are available from eAtlas. http://eatlas.org.au/geonetwork/srv/eng/metadata.show?uuid=034ce816-0777-4bbd-aefc-8b73bd540245本数据集记录了2015年11月与2016年1月，针对托雷斯海峡西北部儒艮（Dugong）与海龟栖息地开展的调查中，34片独立海草床的相关海草信息。 数据涵盖海草物种组成、生物量、多样性指数以及生物量指数（BMI）与藻类盖度百分比等内容。 该海草床（多边形面要素）图层汇总了2015-2016年测绘的34片独立海草床内所有调查样点的综合信息，具体包括单海草床编号、海草床区位（潮间带/浅潮下带/潮下带）、基于平均生物量计算的海草床密度、海草床面积、优势海草物种、现存海草物种组成、调查日期、调查方法以及数据保管方等信息。 制图过程中采用ESRI与Landsat卫星影像底图作为背景参考数据源，用于校验海草床及调查样点的边界，并在必要时进行重新测绘。 本记录所描述的数据截至2016年12月1日均有效，适用于澳大利亚海图（Seamap Australia）项目。该数据的更新版本、853个调查样点的额外点要素数据以及多种可选下载格式，均可从eAtlas获取，详情请访问：http://eatlas.org.au/geonetwork/srv/eng/metadata.show?uuid=034ce816-0777-4bbd-aefc-8b73bd540245