BIOC63H3 Lecture Notes - Lecture 7: Introduced Species, House Sparrow, List Of Natural Phenomena
18 Nov 2013
School
Department
Course
Professor
Document Summary
Expected changes for 2100 in the main 5 drivers of biodiversity change: biggest biotic exchange in the mediterranean most threatened by invasive species. Native species: native to a given region if its presence there is a result of only natural processes, without human intervention. Introduced species: not a threat to ecosystems in their introduced range. Invasive species: are a threat to native competitors in an introduced range. Hugely sped up after industrial revolution and increased travel in he 20th century. Scale of invasion, continental: native and introduced plant species richness. Ontario has the highest percentage of established alien species 32: most of those are plants, 4% mammals starling, house sparrow, mouse, rate, examples of non native birds house barrow, starling. 1: ontario, qb and bc have the most introduced plants by province/territory islands have higher percentages of alien species. Pathways of plant introductions in ca typical course of invasion intentional introductions. Mostly ornamental or landscaping plants: unintentionsal introduction.
