5.1 Communities and ecosystems EQ: How do species interact with one another? Blog: What are some things that you would like to know about ecology? 2. Feedback distributer: Anna 3. Curacao

Food web Diagram that shows how food chains are linked together in a complex feeding relationship The food web has a number of advantages over a food chains including: Shows the much more complex interactions between species within a community/ ecosystem More than one producer supporting a community A single producer being a food source for a number of primary consumers That a consumer may have a number of different food sources on the same or different trophic levels That a consumer can be an omnivore, feeding as a primary consumer and as a consumer at higher trophic levels

5.1 Communities and ecosystems EQ: How do species interact with one another? Finish the food web using the food chains that you created last time. Lay your cards out on the poster paper provided. Draw feeding relationships using markers (not strings). Feedback distributer: Next class: Quiz

Biomagnification Process in which chemical substances become more concentrated at each trophic level As each individual eats contaminated food, it builds up these chemical substances When large number of contaminated individuals are eaten, they pass on a high concentration of chemicals to the predator

Minamata Disease (1956) Mercury Poisoning Methylmercury in industrial wastewater from Chisso Corporation’s chemical factory (nitrogenous fertilizer) Bioaccumulation in fish and shellfish in Minamata Bay Neurological disorder: general weakness of muscles, coordination disturbance, narrow visual field, insanity, coma death

Curacao: Oil refining Oil refining: purify crude oil into petroleum products (diesel, gasoline) up to 100 pollutants emitted from the stacks land is polluted by the large amount of harmful waste from refineries which needs to be dumped water is polluted by the fallout from air pollution and by refineries discharging chemical pollutants into waterways