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），采用两种可选方法完成了海草床分布范围与海草床景观格局的制图工作。方法1采用DJI Mavic 2 Pro无人机（Unmanned Aerial Vehicle, UAV），在低春潮时段获取遥感影像，飞行高度为100米，空间分辨率达2.45厘米/像素，以此开展海草床景观格局制图。方法2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匹配2020年11月25日至27日的野外调查周期，影像像素尺寸为3.7米×3.7米，为天底视角（nadir viewing）数据，源自PlanetScope影像存档库。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。完整数据采集的原始元数据可通过链接https://doi.pangaea.de/10.1594/PANGAEA.946605查阅。