首页> 外文期刊>Plant Ecology >Assessing the diversity pattern of cryophilous plant species in high elevation habitats
【24h】

Assessing the diversity pattern of cryophilous plant species in high elevation habitats

机译:评估高海拔生境中低温植物物种的多样性模式

获取原文
获取原文并翻译 | 示例
       

摘要

This study aimed to better document the diversity and distribution patterns of vascular cryophilous species across major habitat types in a high-elevation Mediterranean system in central Italy. The research addressed the following questions: (a) whether different habitats support similar levels of biodiversity in terms of total vascular plants richness and cryophilous species richness, and (b) how each habitat contributes to the total cryophilous species diversity. A random stratified sampling approach based on a habitat map was applied to construct rarefaction curves for overall cryophilous species richness and habitat type-specific cryophilous richness. Rarefaction curves were also constructed for all-species and exclusive species. To determine whether the targeted species represented a constant proportion of all species, the ratio between the rarefaction curves of the cryophilous species and all species was also calculated. The results highlight the importance of the different habitat types in overall and cryophilous species conservation because these different habitat types had progressively higher richness values. At the regional scale, steep slopes had the highest species diversity, the greatest exclusive species richness and a steep rarefaction curve. The diversity pattern of cryophilous taxa was not related to the general pattern of total species richness, with these species being more common in three habitat types with extreme environmental conditions: ridges, cliffs, and screes. For the establishment of successful biodiversity conservation programs, it is imperative to include species-poor habitats containing a high proportion of cryophilous species, which are considered to be threatened by climate warming.
机译:这项研究旨在更好地记录意大利中部高海拔地中海系统中主要生境类型中维管植物低温物种的多样性和分布模式。该研究解决了以下问题:(a)不同的生境是否在维管束植物总丰富度和嗜冷物种丰富度方面支持了相似的生物多样性水平,以及(b)每个生境如何促进总的嗜冷物种多样性。应用基于栖息地图的随机分层抽样方法来构建稀疏曲线,以求出总体低温物种丰富度和栖息地类型特定的低温丰富度。还为所有物种和专有物种绘制了反射曲线。为了确定目标物种是否代表所有物种的恒定比例,还计算了低温物种和所有物种的稀疏度曲线之间的比率。结果突出了不同栖息地类型在整体和低温物种保护中的重要性,因为这些不同的栖息地类型具有越来越高的丰富度值。在区域范围内,陡坡具有最高的物种多样性,最大的专属物种丰富度和陡峭的稀疏曲线。低温生物分类群的多样性与总物种丰富度的一般模式无关,在具有极端环境条件的三种生境类型中,这些物种更为常见:山脊,悬崖和熨平板。为了建立成功的生物多样性保护计划,必须包括物种丰富的栖息地,其中含有大量被认为受气候变暖威胁的低温物种。

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