An international organization has produced a report on alien invasive species which says the global problem costs billions of dollars annually and is, in some cases, being worsened by climate change. It said that while 80 per cent of countries have targets related to managing invasive alien species in their national biodiversity plans, only 17 per cent have national laws or regulations specifically addressing these issues and about 45 per cent of all countries don’t invest in the management of biological invasions. …The report notes that invasive alien plants can interact with climate change, often resulting in more intense and frequent fires such as some of the devastating wildfires recently experienced in Canada and around the world. …The report found Canada is itself a source of invasive alien species. The North American beaver, a beloved national symbol, is an environmental problem in South America where ecosystems struggle to deal with dammed rivers.