GEOG 2EI3 Lecture Notes - Lecture 3: Rusty Crayfish, Northern Snakehead, Commensalism
13 Oct 2016
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Increases the amount of nutrients available for producers, disrupts energy flow to higher trophic levels, increases energy flow to higher trophic levels, decreases the amount of nutrients available for producers: disrupts energy flow to higher trophic levels. >species that are found nowhere else on earth. >federal, provinces, and territories put in place an outcome-based plan (2006) >problem: tracking and assessing are easier said than done. >graph sorted by known and new species in canada. >majority are known, but a large section of bacteria and insects are new. >500 species of alien plants are now weeds. >figure 36 invasive non-native plants in canada oconstantly increasing o12% not native to canada. ?eurasian water milfoil oappeared in 1970s, in b. c. Several reasons have been invoked by the province of bc to eradicate the. Eurasian milfoil, which one belongs to a biocentric perspective? a)invading and replacing native plant communities. Figure 3. 7 trends in non-native species in the great lakes.
