Ecology

Human's role –> Cause –> sequence of events –> ecological impact –> solution, remedy; consequences (sequential) - electronic trash dumped and buried in LEDCs landfills –> chemical leak causing soil pollution
 * Man's Impact on the Environment**

- Bioaccumulation - Eutrophication: golf course chemicals leached into water bodies

__Video__ - Biodiversity: CTFS – Center for Tropical Forest Study - Bukit Timah Nature Reserve involved - 6% of the whole world is filled with forests – 50% biodiversity found there. If forests decrease to 2%, biodiversity will drop drastically - biodiversity –> diversity + specialisation (e.g. only certain kinds of wasps can pollinate figs) –> gap + forest + edge (lightning strikes tall trees –> crush other trees –> crush even more trees). - gap: affected by abiotic factors. forest dynamics/patchwork - e.g. plants which like sun do very well –> seedling VS adult species composition: sometimes many seedlings but very few adult species because of predators or other things –> few adults later causes herbivores to decrease –> plants increase –> herbivores increase –> plants decrease... - forest dynamics: increase, decrease, increase, decrease –> rare (85%) VS common (15%) rainforest – more species, biodiversity –> rare (20%) VS common (80%) temperate – fewer species, biodiversity ==> climate change - indonesia: many plantations of acacia for paper manufacture - only one species of trees - in canada, coniferous forest: global warming –> winters not cold enough –> cannot kill enough beetles –> more beetles attack trees –> trees brown

- www.learner.org/courses/envsci?unit/text.php