Survey of the Algae, Lichens, and Mosses of Microbiotic Crusts in Selected Semiarid and Arid Sites in Western North America

北美西部部分半干旱和干旱地区微生物结皮的藻类、地衣和苔藓调查

• 批准号: 9870201
• 负责人: Jeffrey Johansen
• 金额: $ 37.7万
• 依托单位: John Carroll University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-09-01 至 2003-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9870201&HistoricalAwards=false
• 关键词: Survey; Algae; Lichens; Mosses; Microbiotic

9870201 Johansen Microbiotic soil crusts are assemblages of cyanobacteria, eukaryotic algae, fungi, lichens, and bryophytes that play an important role in healthy semiarid and arid ecosystems. Despite their prominant ecological role, a clear understanding of the species composition of microbiotic crusts is lacking. Over the course of a 36-month period, thirty locations with known mature microbiotic crust communities throughout intermountain western North America, and representing diverse climatic and geological regions, will be sampled in order to: (1) characterize the species composition of the microbiotic crust organisms. This includes an inventory of the species of cyanobacteria, eukaryotic algae, lichens, and mosses found in the sampled microbiotic crusts and descriptions of new species that may be encountered; (2) produce a data base that includes species lists, descriptions, images, and information on the physical and chemical characteristics of the soils at each locality; (3) produce an electronic version of the data base that will be accessible on the World Wide Web; (4) archive soil samples that will serve as a resource to biologists interested in organisms not included in the survey; (5) identify locations of high diversity that should be targeted for more in-depth study. This project is the first comprehensive study of microbiotic crust organisms, and as such it will provide a resource and database that potentially will be of use to ecologists, systematists, and rangeland managers for many years after the completion of the project.

小行星9870201 微生物土壤结皮是蓝藻，真核藻类， 真菌、地衣和苔藓在健康中起着重要作用， 半干旱和干旱生态系统。尽管它们具有突出的生态作用， 对微生物结皮的物种组成有清楚的了解， 缺乏 在36个月的时间里，30个已知的地点 整个西北部山间的成熟微生物结皮群落 美国，代表着不同的气候和地质区域，将是 （1）确定物种组成的特征; 微生物结皮生物。这包括物种的清单， 蓝藻，真核藻类，地衣和苔藓中发现的采样 微生物结壳和可能遇到的新物种的描述; (2)制作一个数据库，包括物种列表，描述，图像， 和关于土壤的物理和化学特性的资料， （3）建立电子版数据库， 可以在万维网上访问;（4）将土壤样本存档， 作为生物学家的资源， 调查;（5）确定应针对的高度多样性的地点， 更深入的研究。该项目是第一个全面研究 微生物结皮生物，因此它将提供一种资源， 数据库，可能会使用生态学家，系统论者， 牧场管理者在项目完成后的许多年。