Ecosystem function and pollination across a major ecotone: boreal forest, tree-line & tundra

主要生态交错带的生态系统功能和授粉：北方森林、林线

• 批准号: 8098-2011
• 负责人: Kevan, Peter
• 金额: $ 2.33万
• 依托单位: University of Guelph
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=521085
• 关键词: Ecosystem; function; pollination; across; major

Pollination is a crucial ecosystem service that is now recognized as in jeopardy in many places world-wide. Pollination ecology has contributed to understandings of basic botany and zoology, as well as to mutualisms, co-evolution, competition, character displacement, optimal processes in pollinator nutrition and plant reproduction, population genetics, sustainable ecosystem productivity in nature, forestry and agriculture, and recently to the complex field of ecosystem structure and function. Pollination studies in the north (Arctic & Boreal) are few. Also, little attention has been given to comparative studies across ecotones. The proposed research is for comparative studies that span the interface between the boreal forest and Arctic tundra in the complex mosaics of habitats across the tree line of the Hudson Bay lowlands. Studies on the North-South transect from Churchill to Gillam, and both North-South and East-West in Wapusk National Park will produce much needed new information on the pollination biology of Canada's northern flora and its pollination interactions with its insect fauna. The project proposes to take an ecosystemic approach to examining comparatively the complexity of pollinator-plant, plant-plant, and pollinator-pollinator interactions so as to document ecological connectance webs, address the importance of biodiversity, and consider the relative importance of the drivers of ecosystem function and structure (e.g. climatic and edaphic harshness (temperature, permafrost); vegetation (forest and tundra, both wet and dry); age since glaciation; altitude; and fire). The region is comparatively well-known floristically and faunistically, but is now undergoing rapid climate change. Testing simple correlative hypotheses and complex models will help explain how ecosystem complexity, stucture, function, and integrity are inter-related and have co-evolved in the region and for eco-biogeography generally.

花粉是一种至关重要的生态系统服务，目前已被认为在世界许多地方处于危险之中。 植物生态学有助于理解基本的植物学和动物学，以及互利共生，共同进化，竞争，特征置换，传粉者营养和植物繁殖的最佳过程，种群遗传学，自然，林业和农业的可持续生态系统生产力，以及最近的生态系统结构和功能的复杂领域。 在北方（北极和北方）的极地研究很少。此外，很少有人注意到跨生态交错区的比较研究。 拟议中的研究是为了进行比较研究，研究跨越哈德逊湾低地树木线上复杂的栖息地马赛克中的北方森林和北极苔原之间的界面。 对从丘吉尔到吉勒姆的南北样带以及瓦普斯克国家公园的南北和东西样带的研究将产生关于加拿大北方植物群的授粉生物学及其与昆虫区系的授粉相互作用的急需的新信息。 该项目建议采取生态系统方法，比较研究传粉者-植物、植物-植物和传粉者-传粉者相互作用的复杂性，以记录生态连接网络，阐述生物多样性的重要性，并考虑生态系统功能和结构驱动因素的相对重要性（例如气候和土壤的严酷性（温度、永久冻土）;植被（森林和冻原，潮湿和干燥）;自冰川作用以来的年龄;海拔;以及火灾）。 该地区在植物和动物区系方面相对知名，但现在正在经历快速的气候变化。 测试简单的相关假设和复杂的模型将有助于解释生态系统的复杂性，结构，功能和完整性是如何相互关联的，并在该地区和生态地理学共同进化。