High resolution light microscope (DM5000 B) for marine and terrestrial palynology

用于海洋和陆地孢粉学的高分辨率光学显微镜 (DM5000 B)

• 批准号: 359961-2008
• 负责人: DeVernal, Anne
• 金额: $ 3.72万
• 依托单位: Université du Québec à Montréal
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2007
• 资助国家: 加拿大
• 起止时间: 2007-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=365647
• 关键词: resolution; light; microscope; DM5000; marine

The research tool consists of a light microscope with (i) high resolution optical components for the analysis of small micrometric-size objects at high magnification (up to 1000X), (ii) an interferential contrast system to help with the observation of the outer structure and textural pattern of microfossils characterized by a semi-transparent membrane, and (iii) a digital camera for producing images with a resolution in the order of nanometers.The microscope will allow the study of small organic-walled microfossils, including those of unicellular algae (cysts of dinoflagellates, prasinophytes, chlorophytes) and protozoa (organic linings of rhizopods and foraminifers), in addition to pollen grains and spores of terrestrial vegetation. It will permit detailed observations, descriptions, and photographs of selected specimens. It will also permit proper description of new dinoflagellate cyst species and of taxa with unknown affinities. The device will contribute to a better knowledge of the taxonomy of organic-walled microfossils in marine sediments and peatlands.The applications concern, in particular, the development of common microfossil databases for statistical treatments, and the establishment of dinocyst biostratigraphies for the Pliocene and Pleistocene. These studies will allow the reconstruction of the physico-chemical parameters of the waters in which original organisms developed, and will provide basic information on changes in the marine environment, in response to natural causes or to human-related perturbations. The applications also include the reconstruction of recent changes within peatlands of Quebec with the objective of modelling the carbon budget at a regional scale.

该研究工具由（i）高分辨率的光学组件组成，用于分析高放大倍率时小的微米大小（最多1000倍），（ii）一个干预对比度系统，可帮助观察以半传输膜和（III III的序列）为序列的微塑料表征的外部结构和纹理模式，以实现数量，并制作了数量的数量。显微镜将允许研究小的有机壁微化石，包括单细胞藻类（鞭毛藻的囊肿，prasinophytes，叶绿素）和原生动物（根瘤菌和有孔虫的有机衬里），此外，除了花粉晶粒和陆层植被的孢子外，它将允许详细的观察，描述和选定标本的照片。它还将允许对新的鞭毛囊肿物种和具有未知亲和力的分类单元的适当描述。该设备将有助于更好地了解海洋沉积物和泥炭地中有机壁微化石的分类法。尤其是应用于统计处理的常见微化石数据库的应用，以及建立恐龙生物地层的统计疗法，用于上元素和pleistecenecene。这些研究将允许重建原始生物体开发的水域的物理化学参数，并将提供有关海洋环境变化的基本信息，以响应自然原因或与人相关的扰动。这些应用程序还包括重建魁北克泥炭地内的最新变化，目的是在区域规模上对碳预算进行建模。