ENVI 110 Study Guide - Quiz Guide: Ogallala Aquifer, Nonpoint Source Pollution, Freshwater Ecosystem
22 Aug 2016
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Envi 110 key terms draft for exam iii (chapters 13 16, 18 -19, 24 and 26) Case study: coral reefs off the coast of key largo, fl / ocean acidification. Ocean ecosystem services: temp moderation; nutrient cycling; support for commercial fisheries; storm protection along coasts; recreation; source of medicines. Ocean ecosystems influenced by: depth of water column and proximity to shore. Ocean zones: epipelagic: sunlight, meso - and bathypelagic: twilight, abyssopelagic: darkness, hadal: deep trenches. Threats to ocean ecosystems: pollution, overfishing, ocean acidification, release of co2 from fossil-fuel combustion (carbonic acid in atmosphere + winds mix co2 into top layers of water), toxins, oil spills, litter/plastic waste, sediment increase, invasive species (lionfish. Threats to ocean life: overfishing, fishing techniques (bottom trawling, dynamite use), bycatch, pollution, invasive species, fossil fuel combustion- biggest threat. 30% of co2 released by humans in past two centuries absorbed by oceans. Positive feedback loop: less plankton means less primary production, thus less co2 capture and storage.
