ENV432H1 Lecture Notes - Lecture 5: Briey, Bioremediation, Daphnia
Document Summary
What factors determine the species present or species lost and communities. Are some species better able to adapt to urban environments (gradient) Are there differences in terms of local versus regional versus global patterns. How can we maintain diverse urban ecosystems and why. Ways humans impact ecosystems -adam and lindsey 2011. Constructing both dispersal barriers and invasion pathways through habitat fragmentation. Introducing exotic species and causing mass faunal extinctions. Changing ecosystem stability by altering environmental constraints and biota (cid:12254) (cid:12254) We are modifying land use with soils and hydrology, climate. Urban physical environments are different then what they were historically and this will change the species. Manipulating disturbance regimes by suppressing or increasing possibilities of occurance which affects communities and ripples across tropic levels (cid:12254) We have modi ed streams , becoming much more extreme then in a natural system and we are losing variability. Modi ed by what types of species are present.
