Evolutionary Ecology and Coordinated Stasis of the Middle Devonian Hamilton Fauna

中泥盆统汉密尔顿动物群的进化生态学和协调停滞

• 批准号: 9219795
• 负责人: Niles Eldredge
• 金额: $ 7.3万
• 依托单位: American Museum Natural History
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-07-01 至 1995-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9219795&HistoricalAwards=false
• 关键词: Evolutionary; Ecology; Coordinated; Stasis; Middle

PIs will examine evolution of co-occurring lineages of benthic marine invertebrates from the well-studied Middle Devonian Hamilton and Tully groups, to determine how ecology influences rate and style of evolution. Morphometrics of selected fauna will establish degree of change of lineages within constrained biofacies through several transgressive/regressive cycles. Community structure will be examined to test the degree of community stability. The origin, stability and demise of the Hamilton-Tully fauna will be examined as a case study of apparently coordinated or community-level stasis, leading to a general model for the dynamics of ancient marine benthic communities. PIs will also produce a photo atlas.

pi将研究中泥盆纪汉密尔顿和塔利群中底栖海洋无脊椎动物共存谱系的进化，以确定生态如何影响进化的速度和方式。选定动物群的形态计量学将通过几个海侵/退回周期确定受限制生物相内谱系的变化程度。将检查社区结构，以测试社区的稳定程度。汉密尔顿-塔利动物群的起源、稳定和消亡将作为一个明显协调或群落水平停滞的案例研究来研究，从而得出古代海洋底栖生物群落动态的一般模型。pi还将制作一份图集。