Knowledge Resource Center for Ecological Environment in Arid Area
| Moss farming: How cultivation of biocrust bryophytes may be the key to arid soil restoration | |
| Doherty, Kyle David | |
| 出版年 | 2014 |
| 学位类型 | 硕士 |
| 导师 | Johnson, Nancy C. |
| 学位授予单位 | Northern Arizona University |
| 英文摘要 | Biocrusts are a community dominated by autotrophic soil organisms that form a living matrix on the soil surface in arid regions, and are found throughout the Western United States. They provide numerous ecosystem services, including soil stabilization, dust trapping, and nutrient fixation. Disturbance from increased human activity in biocrust habitat has led to a reduction in their presence on the landscape. Resource extraction, cattle grazing, and development are primary mechanisms of disturbance to biocrusts in the West. The result of these activities is widespread soil loss, which compromises rangeland soil fertility, human health, human safety, and regional water security. To mitigate the effects of soil disturbance, we investigated the potential to rapidly cultivate biocrust for use in restoration. We developed an automated system of culturing all components of biocrust communities in the greenhouse that allow for ease of replication and manipulation of growth parameters to determine optimal rates of biomass increase, and compared its efficacy to other systems. We explored the feasibility of cultivating the moss component of biocrust by cultivating five populations of the common biocrust moss, Syntrichia ruralis, collected from the Colorado Plateau. Populations were selected based on differing precipitation patterns received at their home site to explore adaptation to a monsoonal gradient. We then subjected cultivated materials to physiologically stressful watering, to evaluate their response to potentially unfavorable future climate. We found that populations differ in rates of growth and stress tolerance, implying genetic variation across populations sampled. Interestingly, cyanobacterial biocrust components developed alongside inoculated moss tissue under greenhouse cultivation, suggesting that biocrust mosses may be used as a propagule, or seed analog, for a functional biocrust community. Our findings indicate that biocrusts may be rapidly cultivated in a greenhouse to develop restoration-relevant quantities for use in soil disturbance mitigation. |
| 英文关键词 | Aridland Biocrust Biological soil crust Moss Soil restoration Soil stabilization |
| 语种 | 英语 |
| 国家 | United States |
| 来源学科分类 | Plant biology; Ecology; Conservation |
| URL | https://pqdtopen.proquest.com/doc/1655360004.html?FMT=AI |
| 来源机构 | Northern Arizona University |
| 资源类型 | 学位论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/248155 |
| 推荐引用方式 GB/T 7714 | Doherty, Kyle David. Moss farming: How cultivation of biocrust bryophytes may be the key to arid soil restoration[D]. Northern Arizona University,2014. |
| 条目包含的文件 | 条目无相关文件。 | |||||
| 个性服务 |
| 推荐该条目 |
| 保存到收藏夹 |
| 导出为Endnote文件 |
| 谷歌学术 |
| 谷歌学术中相似的文章 |
| [Doherty, Kyle David]的文章 |
| 百度学术 |
| 百度学术中相似的文章 |
| [Doherty, Kyle David]的文章 |
| 必应学术 |
| 必应学术中相似的文章 |
| [Doherty, Kyle David]的文章 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
