Digital Elevation Models of Biogenic Structures in the Central Wadden Sea at the Species-Related Scale

This dataset provides high-resolution, digital elevation models (DEMs) of biogenic structures formed by the Pacific oyster (Magallana gigas) and the blue mussel (Mytilus edulis) in the central Wadden Sea, enabling analysis through spatial statistics at the species-related scale. The data set contains samples from two M. gigas reefs (Kaiserbalje and Nordland) and an M. edulis bed (Nordstrand). The DEMs were generated using close-range structure-from-motion (SfM) photogrammetry and hand-held cameras. Each DEM captures surface level elevations within approximately 1.5 m² at a resolution of >2 mm. The M. gigas reef samples are classified into seven structural classes (Central Reef, Transitional Zone, Cluster I, Cluster II, Patch I, Patch II, and Garland), highlighting the intra-reef heterogeneity. The data set comprises 22 samples of the M. gigas reef Kaiserbalje, three samples of the M. gigas reef Nordstrand, and four samples of the M. edulis bed Nordstrand. These DEMs were used to characterize the intra-reef heterogeneity of M. gigas reefs, validating the structural classification. They also served as input and validation data in the design of surrogate models of both biogenic structures for experimental hydrodynamic testing. This dataset is intended to support further research on biogenic surface morphology, hydrodynamic modeling, habitat mapping, and the development of nature-based coastal protection strategies.

该数据集提供了瓦登海中部由太平洋牡蛎（Magallana gigas）和蓝贻贝（Mytilus edulis）形成的生物成因结构的高分辨率数字高程模型（DEMs），可支持在物种相关尺度上通过空间统计进行分析。数据集包含来自两个太平洋牡蛎礁（Kaiserbalje和Nordland）及一个蓝贻贝床（Nordstrand）的样本。DEMs通过近景运动恢复结构（SfM）摄影测量技术及手持相机生成，每个DEM以>2毫米的分辨率捕捉约1.5平方米范围内的地表高程。太平洋牡蛎礁样本被划分为七个结构类别（核心礁区、过渡带、簇群I、簇群II、斑块I、斑块II及花环区），凸显了礁内异质性。数据集包含Kaiserbalje太平洋牡蛎礁的22个样本、Nordstrand太平洋牡蛎礁的3个样本及Nordstrand蓝贻贝床的4个样本。这些DEM被用于表征太平洋牡蛎礁的礁内异质性，验证结构分类的有效性；同时，它们还作为两种生物成因结构替代模型设计的输入与验证数据，用于实验水动力测试。本数据集旨在支持生物成因表面形态、水动力建模、栖息地制图及基于自然的海岸保护策略开发等领域的进一步研究。