PISCO: Intertidal: Biodiversity Surveys: OSU: Spatially-nested Biodiversity Surveys

This metadata record documents the patterns of diversity and abundance of macro algae and invertebrates on rocky shores by using a nested sampling scheme. At the largest scale are stretches of rocky habitat that are spaced across the United States West Coast to represent major areas that are relatively similar in physical factors. Nested within each of these major areas are three sites, and nested within each of these sites are three sets of sampled areas. In each sampled area a 50 meter transect tape is placed at Mean Lower Low Water, Mean Sea Level, and Mean Higher High Water (and sometimes also the super high water mark). The abundance of all macro algae and invertebrates in 10 50 x 50 cm quadrates along each transect were measured. A suite of physical data including aspect and slope of the shore, degree of sandiness, and water temperature were collected. Eye bolts and a wire meshed caged temperature data loggers were installed at each site.

本元数据(metadata)记录采用嵌套采样方案(nested sampling scheme)，详实记录了美国西海岸岩岸大型藻类(macro algae)与无脊椎动物(invertebrates)的多样性及丰度分布模式。研究的最大采样尺度为分布于美国西海岸的岩生生境片区，这些片区代表了物理环境参数相对一致的主要区域。每个主要区域内嵌套布设3个采样点，每个采样点内再嵌套3组采样区域。在每个采样区域中，沿50米样带分别设置于平均低潮水位(Mean Lower Low Water)、平均海平面(Mean Sea Level)、平均高潮水位(Mean Higher High Water)，部分区域同时增设超高水位标记(super high water mark)。沿每条样带，对10个50×50 cm的样方(quadrates)内的所有大型藻类与无脊椎动物的丰度进行了测定。此外，研究团队还采集了一系列物理环境数据，包括海岸坡向、坡度、沙化程度以及水温。每个采样点均安装了膨胀螺栓(eye bolts)与带钢丝网防护笼的温度数据记录仪(temperature data loggers)。