Comparative Phylogeography of Lowland New Guinea

新几内亚低地的比较系统发育地理学

• 批准号: 0452732
• 负责人: John Dumbacher
• 金额: --
• 依托单位: California Academy of Sciences
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-12-15 至 2006-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0452732&HistoricalAwards=false
• 关键词: Comparative; Phylogeography; Lowland; New; Guinea

New Guinea's lowland tropical forests are vast and are largely connected. Animal species living in lowland forests are often common and continuously distributed throughout these lowlands (in essentially a ring around the central mountain ranges of New Guinea). However, lowland forest species often show tremendous amounts of genetic or phenotypic variation. We hypothesize that this variation is due largely to geographic or geologic history, and we propose several testable hypotheses that might account for this variation (including specific historical events or dispersal barriers, habitat differences, and multiple competing evolutionary processes). We will use analyses of mitochondrial and nuclear DNA sequence variation from six common, widespread focal bird species to determine which evolutionary models best explain the pattern and sources of variation in New Guinea's lowland forests.This study will be the first to employ modern genetic data and analyses to the phylogeography of lowland New Guinea. We expect these data to identify lowland biogeographic provinces heretofore unrecognized, and it will therefore have important implications for conservation planning. Our biological evidence will provide independent estimates of the timing of geologic events. In addition, this study will employ and critically examine new phylogeographic analyses that are still maturing. We hope to critically examine the assumptions and uses of these tests in complex geographical regions, such as New Guinea. Finally, the project will train 6-8 New Guinea biology students who will receive practical experience in field techniques, systematics, and evolutionary biology.

新几内亚的低地热带森林广阔，在很大程度上相连。 生活在低地森林中的动物物种通常是常见的，并且在这些低地（本质上是在新几内亚的中央山脉周围的环）中持续分布。 但是，低地森林物种通常显示出巨大的遗传或表型变异。 我们假设这种差异主要是由于地理或地质历史的原因，并且我们提出了几种可检验的假设，这些假设可能解释了这种差异（包括特定的历史事件或分散障碍，栖息地差异和多个竞争性进化过程）。我们将使用从六种常见的，广泛的焦点鸟类物种对线粒体和核DNA序列变化的分析来确定哪种进化模型可以最好地解释新几内亚的低地森林中的模式和差异。这项研究将是第一个使用现代遗传数据并分析低地新豚鼠植物学的现代遗传数据。 我们希望这些数据能够确定低地生物地理省迄今未被认可，因此它将对保护计划具有重要意义。 我们的生物学证据将对地质事件的时机提供独立的估计。 此外，这项研究将采用并批判性地检查仍在成熟的新植物地理分析。 我们希望在复杂的地理区域（例如新几内亚）中批判性地研究这些测试的假设和用途。 最后，该项目将培训6-8名新的几内亚生物学学生，他们将获得现场技术，系统学和进化生物学的实践经验。