Seagrass meadow extents derived from field to spaceborne earth observation at Green Island (Wunyami), a reef habitat in the Cairns section of the Great Barrier Reef, November 2020

Seagrass meadow extent and meadow-scape was mapped using two alternative approaches at Green Island, a reef clear water habitat, in the Cairns section of the Great Barrier Reef, in November 2020. Approach 1 included mapping seagrass meadow-scape using imagery captured during low spring tides with a DJI Mavic 2 Pro UAV at an altitude of 100 m, with a resolution of 2.45cm/pixel. Approach 2 used PlanetScope Dove imagery captured on 05 November 2020 coinciding as close as possible to the field-surveys from 25 to 27 November 2020, with 3.7 m x 3.7 m pixels (nadir viewing) acquired from the PlanetScope archive.

This record describes meadow extent data collected using Approach 2 (PlanetScope imagery). View the original metadata record at https://doi.pangaea.de/10.1594/PANGAEA.946605 for the full data collection.

2020年11月，研究团队于大堡礁凯恩斯片区的礁体清水生境绿岛（Green Island），采用两种不同测绘方法完成了海草床（seagrass meadow）分布范围与海草床景观格局（meadow-scape）的制图工作。方法1依托大疆御2专业版（DJI Mavic 2 Pro）无人机（UAV）在春季大潮低潮时段采集的影像开展测绘，飞行高度为100米，空间分辨率达2.45厘米/像素。方法2则采用2020年11月5日获取的PlanetScope Dove影像，该影像的采集时段尽可能与2020年11月25日至27日的野外调查时段重合，其像素分辨率为3.7米×3.7米，采用天底观测（nadir viewing）模式，数据源自PlanetScope影像档案库。
本数据集记录了采用方法2（PlanetScope影像）采集的海草床分布范围数据。如需查阅完整数据采集流程的原始元数据，请访问链接https://doi.pangaea.de/10.1594/PANGAEA.946605。