• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>North American Fungi >Lichen ecology and diversity of a sagebrush steppe in Oregon: 1977 to the present
【24h】

Lichen ecology and diversity of a sagebrush steppe in Oregon: 1977 to the present

机译：俄勒冈州地衣生态学和鼠尾草草原的多样性：1977年至今

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We present a lichen checklist of 141 species from the Lawrence Memorial Grassland Preserve and nearby lands in Wasco County, Oregon, based on collections made in the 1970s and 1990s. Collections include epiphytic, lignicolous, saxicolous, muscicolous, and terricolous species. One of these collections is the type specimen for a recently described species, Placopyrenium conforme . To evaluate differences between collections made in the 1970s and 1990s, taxa are placed in six morphological groups: crustose, foliose, fruticose, squamulose, stratified nitrogen-fixers, and gelatinous nitrogen-fixers. We determined that recent visits to the preserve added a greater proportion of terricolous species to the list than species from other substrates, reflecting developments in the taxonomy and understanding of biological soil crusts over recent decades. The trade-off between smaller-scale study plots that capture accurate species abundance and larger plots that capture more complete species richness is amplified in the sagebrush steppe because of the small size and cryptic nature of many lichens. We discuss the benefits of both approaches to lichen monitoring in these ecosystems. This project was possible because voucher specimens were available from the original 1977 survey, which allowed us to address changes in species concepts over recent decades.
机译：我们根据1970年代和1990年代的收藏品，列出了来自俄勒冈州瓦斯科县劳伦斯纪念草原保护区和附近土地的141种地衣清单。集合包括附生的，木质的，剑毛的，粘液的和三生的物种。这些集合之一是最近描述的物种Placopyreniumconforme的类型标本。为了评估1970年代和1990年代的藏品之间的差异，将分类单元划分为六个形态组：壳糖，叶糖，果糖，ose糖，分层固氮剂和胶状固氮剂。我们确定，最近对保护区的访问使列表中的陆生物种比其他基质的物种更多，这反映了分类学的发展以及对近几十年来生物土壤结壳的了解。由于许多地衣的大小和隐秘性，在鼠尾草中放大了捕获准确物种丰富度的小规模研究样地和捕获更完整物种丰富度的大样地之间的权衡。我们讨论了这两种方法在这些生态系统中进行地衣监测的好处。该项目之所以可行，是因为可以从1977年的原始调查中获得凭证标本，这使我们能够解决近几十年来物种概念的变化。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号