ENV100Y5 Lecture Notes - Lecture 19: Nutrient Pollution, Calcium Carbonate, Blast Fishing
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ENV100Y5 Full Course Notes
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Document Summary
Many important marine habitats that are in trouble: Coral reefs: great barrier reef catastrophic loss. Mangroves - wetland trees: highly threatened. Coral reefs are really biodiverse cradle of evolution. Shallow subtropical and tropical waters: there are northern and southern coral reef areas. ~25% of all marine species live and are associated with coral reefs. Economically important (tourism, ecosystem services, etc. : protect communities from storm surges, used as a very popular tourist attraction method. Corals = colonial organisms (related to sea anemones and jellyfish: corals are animals very tiny multicellular animals that are often made of calcium carbonate they secrete calcium carbonate and that creates reefs. Many secrete carbonate exoskeletons; form reefs: corals are the actual organisms and they excrete calcium carbonate to form reefs gives it the name of calcium carbonate. House symbiotic organisms- this is how they get their nutrition: symbiotic algae called zooxanthellae- provide nutrients, they photosynthesise and provide food source for coral reefs.
