Dataset on invasion of Parvulastra parvivipara intertidal boulder-field habitat by Pacific oysters

Percentage cover of Pacific oysters (Crassostrea gigas) and densities of Parvulastra parvivipara sea stars underneath haphazardly selected boulders at two intertidal boulder-field sites (Cape Vivonne and Point Brown) on Western Eyre peninsula, South Australia. Percentage cover and boulder areas were measured by importing photographs (including a ruler for scale) of the underside of boulders into SketchUp v8 and using the programme to make the calculations.

本数据集记录了澳大利亚南澳州西艾尔半岛（Western Eyre Peninsula）两处潮间带砾石滩站点——维沃恩角（Cape Vivonne）与布朗角（Point Brown）——内，随机选取的砾石下方的太平洋牡蛎（Pacific oysters, Crassostrea gigas）盖度，以及小胎海星（Parvulastra parvivipara）的种群密度。盖度与砾石面积通过以下方式测算：将带有比例尺标尺的砾石底面照片导入SketchUp v8软件，借助该软件完成相关计算。