Headwater stream macrophyte data 1998 [Countryside Survey]

This dataset consists of macrophyte species records, sampled from headwater streams during a survey in 1998. Stream macrophytes in Countryside Survey are surveyed using the standard MTR (Mean Trophic Rank) protocol, which records the presence and extent (on a categorical scale) of macrophytes in a 100m reach. Data were collected under the Countryside Survey long term monitoring project managed by the Centre for Ecology & Hydrology. The Countryside Survey is a unique study or 'audit' of the natural resources of the UK's countryside. The sample sites are chosen from a stratified random sample, based on a 15 by 15 km grid of GB. Headwater stream surveys have been carried out in 1990, 1998 and 2007 with repeated visits to the majority of sites. The countryside is sampled and surveyed using rigorous scientific methods, allowing us to compare new results with those from previous surveys. In this way we can detect the gradual and subtle changes that occur in the UK's countryside over time. In addition to headwater stream data, soil data, habitat areas, vegetation species data and linear habitat data are also gathered by Countryside Survey. Full details about this dataset can be found at https://doi.org/10.5285/e0b638d5-8271-4442-97ef-cf46ea220f5d

本数据集由1998年对源头溪流进行的调查中采集的大型水生植物物种记录组成。在乡村调查中，对溪流大型水生植物的调查采用标准MTR（平均营养等级）协议，记录了100米范围内大型水生植物的存在程度（按类别尺度）。数据收集是在乡村调查长期监测项目下进行的，该项目由生态与水文中心管理。乡村调查是对英国乡村自然资源的独特研究或‘审计’。样本点从GB的15×15公里网格中进行分层随机选择。源头溪流调查于1990年、1998年和2007年进行，并对大多数站点进行了重复访问。乡村的调查采用严格的科学方法，使我们能够将新结果与先前调查的结果进行比较。通过这种方式，我们可以检测到英国乡村随着时间的推移所发生的逐渐和微妙的变化。除了源头溪流数据外，乡村调查还收集了土壤数据、生境面积、植被物种数据和线性生境数据。关于本数据集的详细信息可在以下链接找到：https://doi.org/10.5285/e0b638d5-8271-4442-97ef-cf46ea220f5d