Cretaceous and paleogene vegetation of western Canada: organismal and floristic evolution

加拿大西部白垩纪和古近纪植被:有机体和植物区系的进化

基本信息

  • 批准号:
    6908-2007
  • 负责人:
  • 金额:
    $ 3.51万
  • 依托单位:
  • 依托单位国家:
    加拿大
  • 项目类别:
    Discovery Grants Program - Individual
  • 财政年份:
    2010
  • 资助国家:
    加拿大
  • 起止时间:
    2010-01-01 至 2011-12-31
  • 项目状态:
    已结题

项目摘要

The Cretaceous and Paleogene witnessed the most dramatic floristic evolution in the history of vascular plants. During this time flowering plants appeared, diversified and rose to dominance. Filicalean ferns and pinaceous conifers underwent significant evolutionary radiations. Many other groups such as pteridophytes and gymnosperms suffered significant reductions in diversity or taxa became extinct. Evolutionary turnover was accompanied by a dramatic increase in species richness, correlated with an increase in ecological complexity. Flowering plant dominated forests replaced conifers and cycads. Ferns radiated into niches produced by increased complexity of plant communities. Pinaceous conifers diversified to dominate upland and drier habitats. On the forest floor there was significant change in herbaceous ground cover as seen by the evolution of new species of bryophytes, lycopods and horsetails, and an explosive radiation of ferns. Climate of western Canada changed dramatically as mean annual temperatures decreased from tropical conditions. Alberta and BC are uniquely suited for studying these changes because they yield some of the most abundant sources of plant fossils in North America. Compression floras of central and southern Alberta allow description of many new species, whole plant reconstructions and characterization of floras in the context of their environments of growth and deposition. The most spectacular occurrences of anatomically preserved fossil plants are from the world famous Princeton Chert and several new sources of fossils in carbonate marine nodules from Vancouver Island and the Pacific coast. Using traditional techniques to study anatomy, morphology, and phylogeny, as well as newer methods for three-dimensional reconstruction, epifluorescence, CLSM, SEM, and TEM, we will investigate the evolution of fossil plants from a number of sites. Studies will center on the last pre-angiospermous vegetation, early angiospermous floras and the history of fires, aquatic floras, and fruits and seeds of Eocene forests from British Columbia and Alberta.
白垩纪和古近纪见证了维管植物历史上最戏剧性的区系演变。在这段时间里,开花植物出现了,种类多样化,并上升到统治地位。丝状蕨类和松科针叶树经历了显著的进化辐射。许多其他类群,如蕨类植物和裸子植物,其多样性显著减少或类群灭绝。进化更替伴随着物种丰富度的急剧增加,与生态复杂性的增加相关。以开花植物为主的森林取代了针叶树和苏铁。蕨类植物辐射到由于植物群落复杂性增加而产生的生态位。松科针叶树多样化以支配高地和干燥生境。从苔藓植物、石松类和马尾类新种的进化和蕨类植物的爆炸性辐射可以看出,在森林地面上草本地被有显著的变化。加拿大西部的气候发生了巨大的变化,年平均气温从热带气候下降。阿尔伯塔省和不列颠哥伦比亚省是研究这些变化的最合适的地方,因为它们拥有北美最丰富的植物化石资源。阿尔伯塔省中部和南部的压缩区系可以描述许多新物种,整个植物的重建以及在其生长和沉积环境背景下的区系特征。解剖学上保存的最壮观的植物化石来自世界著名的普林斯顿燧石和温哥华岛和太平洋海岸碳酸盐海洋结核中的几个新化石来源。利用传统的解剖学、形态学和系统发育研究技术,以及三维重建、表观荧光、CLSM、扫描电镜和透射电镜等新方法,我们将从多个地点研究化石植物的进化。研究将集中在最后的前被子植物植被,早期被子植物区系和火灾的历史,水生植物区系,以及不列颠哥伦比亚省和阿尔伯塔省始新世森林的果实和种子。

项目成果

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Stockey, Ruth其他文献

Stockey, Ruth的其他文献

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{{ truncateString('Stockey, Ruth', 18)}}的其他基金

Cretaceous and paleogene vegetation of western Canada: organismal and floristic evolution
加拿大西部白垩纪和古近纪植被:有机体和植物区系的进化
  • 批准号:
    6908-2007
  • 财政年份:
    2011
  • 资助金额:
    $ 3.51万
  • 项目类别:
    Discovery Grants Program - Individual
Cretaceous and paleogene vegetation of western Canada: organismal and floristic evolution
加拿大西部白垩纪和古近纪植被:有机体和植物区系的进化
  • 批准号:
    6908-2007
  • 财政年份:
    2009
  • 资助金额:
    $ 3.51万
  • 项目类别:
    Discovery Grants Program - Individual
Cretaceous and paleogene vegetation of western Canada: organismal and floristic evolution
加拿大西部白垩纪和古近纪植被:有机体和植物区系的进化
  • 批准号:
    6908-2007
  • 财政年份:
    2008
  • 资助金额:
    $ 3.51万
  • 项目类别:
    Discovery Grants Program - Individual
Cretaceous and paleogene vegetation of western Canada: organismal and floristic evolution
加拿大西部白垩纪和古近纪植被:有机体和植物区系的演化
  • 批准号:
    6908-2007
  • 财政年份:
    2007
  • 资助金额:
    $ 3.51万
  • 项目类别:
    Discovery Grants Program - Individual
Paleobotany in western North America
北美西部的古植物学
  • 批准号:
    6908-2002
  • 财政年份:
    2006
  • 资助金额:
    $ 3.51万
  • 项目类别:
    Discovery Grants Program - Individual
Paleobotany in western North America
北美西部的古植物学
  • 批准号:
    6908-2002
  • 财政年份:
    2005
  • 资助金额:
    $ 3.51万
  • 项目类别:
    Discovery Grants Program - Individual
Paleobotany in western North America
北美西部的古植物学
  • 批准号:
    6908-2002
  • 财政年份:
    2004
  • 资助金额:
    $ 3.51万
  • 项目类别:
    Discovery Grants Program - Individual
Paleobotany in western North America
北美西部的古植物学
  • 批准号:
    6908-2002
  • 财政年份:
    2003
  • 资助金额:
    $ 3.51万
  • 项目类别:
    Discovery Grants Program - Individual
Paleobotany in western North America
北美西部的古植物学
  • 批准号:
    6908-2002
  • 财政年份:
    2002
  • 资助金额:
    $ 3.51万
  • 项目类别:
    Discovery Grants Program - Individual
Paleobiology in western North America
北美西部的古生物学
  • 批准号:
    6908-1998
  • 财政年份:
    2001
  • 资助金额:
    $ 3.51万
  • 项目类别:
    Discovery Grants Program - Individual

相似海外基金

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合作研究:白垩纪/古近纪大规模灭绝后陆地生态系统如何重建?
  • 批准号:
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Collaborative Research: How did Terrestrial Ecosystems Rebuild Following the Cretaceous/Paleogene Mass Extinction?
合作研究:白垩纪/古近纪大规模灭绝后陆地生态系统如何重建?
  • 批准号:
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  • 财政年份:
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Elucidation of the Origin of Seafloor Rare Earth Resources through Biological Productivity in the Paleogene Ocean
通过古近纪海洋生物生产力阐明海底稀土资源的来源
  • 批准号:
    23K19025
  • 财政年份:
    2023
  • 资助金额:
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Collaborative Research: How did Terrestrial Ecosystems Rebuild Following the Cretaceous/Paleogene Mass Extinction?
合作研究:白垩纪/古近纪大规模灭绝后陆地生态系统如何重建?
  • 批准号:
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  • 财政年份:
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Collaborative Research: How did Terrestrial Ecosystems Rebuild Following the Cretaceous/Paleogene Mass Extinction?
合作研究:白垩纪/古近纪大规模灭绝后陆地生态系统如何重建?
  • 批准号:
    2317669
  • 财政年份:
    2023
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    $ 3.51万
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    Standard Grant
Collaborative Research: How did Terrestrial Ecosystems Rebuild Following the Cretaceous/Paleogene Mass Extinction?
合作研究:白垩纪/古近纪大规模灭绝后陆地生态系统如何重建?
  • 批准号:
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  • 财政年份:
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    Standard Grant
Collaborative Research: How did Terrestrial Ecosystems Rebuild Following the Cretaceous/Paleogene Mass Extinction?
合作研究:白垩纪/古近纪大规模灭绝后陆地生态系统如何重建?
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合作研究:白垩纪/古近纪大规模灭绝后陆地生态系统如何重建?
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    2317666
  • 财政年份:
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  • 资助金额:
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The Cretaceous-Paleogene Boundary in the Southern Hemisphere
南半球白垩纪-古近纪边界
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    22H01342
  • 财政年份:
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白垩纪-古近纪南大洋的碳气候扰动:来自 IODP 392 厄加勒斯高原的线索
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    NE/W00769X/1
  • 财政年份:
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  • 资助金额:
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