Dissertation Research: Microevolutionary Dynamics and Conservation Genetics of the Rare Vernal Pool Sunflower Lasthenia Conjugens (Asteraceae)

论文研究：稀有春池向日葵 Lasthenia Conjugens（菊科）的微进化动力学和保护遗传学

• 批准号: 0206088
• 负责人: Thomas Ranker
• 金额: $ 1万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-06-15 至 2005-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0206088&HistoricalAwards=false
• 关键词: Dissertation; Research; Microevolutionary; Dynamics; Conservation

Vernal pools are ephemeral wetlands that are home to many endemic plants and animals.At Travis Air Force Base in California, a restoration project is in progress to create new vernalpools that will have similar levels of biological diversity as natural pools. The proposed researchfocuses on the federally endangered vernal pool endemic annual plant called "Contra Costagoldfields" (Lasthenia conjugens; Asteraceae). The primary goals of the proposed study are tocompare changes in levels and patterns of genetic variation over time in natural vs. artificialpools and to assess the relationship between insect-pollinator activity and genetic variation. Toachieve those goals, a kind of genetic fingerprinting technique will be used to measure geneticvariation and that information will be compared to information obtained by making detailedobservations of pollinator activity.The results of this research will have broad scientific implications and will help guideapplied, conservation management decisions. More broadly, this study will contribute to ourunderstanding of the genetics and evolution of species endemic to the unique and rapidlydisappearing vernal pools. Few detailed studies of any vernal pool species have ever beenconducted. From a conservation management perspective, this study will assess theeffectiveness of an ecological approach to habitat restoration in preserving the genetic integrityof a species and in preserving important plant-pollinator relationships.

春池是短暂的湿地，是许多特有植物和动物的家园。在加州的特拉维斯空军基地，一个恢复项目正在进行中，以创建新的春池，这些春池将具有与天然池相似的生物多样性水平。拟议的研究重点是联邦濒危的春池特有的一年生植物称为“康特拉Costagoldfields”（结合型无力;菊科）。拟议研究的主要目标是比较自然与人工池中遗传变异水平和模式随时间的变化，并评估昆虫传粉者活动与遗传变异之间的关系。为了实现这些目标，一种遗传指纹技术将被用来测量遗传变异，并将该信息与通过详细观察传粉者活动获得的信息进行比较。这项研究的结果将具有广泛的科学意义，并将有助于指导应用，保护管理决策。更广泛地说，这项研究将有助于我们了解独特的和迅速消失的春季池塘特有物种的遗传和进化。很少有详细的研究任何春季池物种曾经进行过。从保护管理的角度来看，本研究将评估生态学方法在保护物种遗传完整性和保护重要的植物-传粉者关系方面的有效性。