Taxonomic and Life History Correlates of Rarity in the Flora of the United States and Canada

9726456施瓦茨关于控制植物稀有因素的知识是成功保护植物的关键。环境生物学分部的这笔赠款将利用自然保护协会关于美国和加拿大植物的自然遗产数据库，对稀有植物的特征进行广泛的概括。使用统计技术，将确定稀有性是否与以下因素相关：(A)生活史属性，(B)分类亲缘关系，以及c)系统发育谱系。这项研究首先专注于辨别稀有的广泛模式，然后将重点细化到更精细的尺度(生态、地理、分类)，以确定在广泛尺度上观察到的哪些模式在不同尺度上保持一致。

9726456 Schwartz Knowledge about the factors controlling plant rarity are critical to successful conservation. This grant from the Division of Environmental Biology will utilize the Nature Conservancy Natural Heritage Data Base on plants of the United States and Canada to make broad generalizations about the characteristics of rare plants. Using statistical techniques, it will be determined if rarity is correlated with: ( a) life history attributes, (b) taxonomic affiliation, and c) phylogenetic lineage. This research focuses on discerning broad patterns of rarity first, and then refines the focus down to finer scales (ecological, geographical, taxonomic) in order to determine which patterns observed at the broad scale remain consistent across scales.