Interactions between non-native plants and their natural enemies in core and marginal populations

核心和边缘种群中非本地植物与其天敌之间的相互作用

• 批准号: 194612-2011
• 负责人: Kotanen, Peter
• 金额: $ 2.77万
• 依托单位: University of Toronto
• 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=523241
• 关键词: Interactions; between; non; native; plants

Non-native plants are a serious environmental and economic problem in southern Canada; however, few extend to northern latitudes. The northern range limits of non-natives may be set directly by cold climate, but also may be influenced both positively and negatively by interactions with natural enemies (herbivores and pathogens). Northern populations may gain an advantage by escaping enemies that are themselves unable to disperse to or survive in northern sites; on the other hand, slow-growing northern plants may have trouble replacing tissues lost to any enemies that they fail to escape, reducing their success.

非本地植物在加拿大南部是一个严重的环境和经济问题；然而，很少有延伸到北纬地区的。非本地人的北部范围限制可能直接由寒冷气候决定，但也可能受到与天敌（食草动物和病原体）相互作用的积极和消极影响。北方人口可能会通过逃离本身无法分散到北方地点或在北方地点生存的敌人而获得优势；另一方面，生长缓慢的北方植物可能难以补充因未能逃脱的敌人而失去的组织，从而降低了其成功率。