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Lecture

Environmental Studies Week 1 & 2.docx

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Department
Environmental Studies
Course
ES101
Professor
Robert Mc Leman
Semester
Fall

Description
Environmental Studies Week 1, Lecture 1 Terms Environment: everything that affects a living organism (unique form of life) Ecology: biological science studies relationships between living organism and environment Sustainability: length system/activity will last Carrying Capacity: max number of organisms that can be sustained in a habitat without degradation Cultural Carrying Capacity: max # of people that can healthily living in an area without degrading the environment The Ocean Oceans are practically garbage dumps because of humans (dumping, activity, etc.) 10% of population live within 10km of sea level 15%of global urban area is nested in zone plastic is the largest polluter because it takes years to break down but it will not ever fully degrade animals mistakenly eat plastics and the toxins adhere to plastic carcinogenic substances are lipophilic (gravitates to fat tissue) creates dead zones (benthic areas)because of heavy nutrient load (i.e. Gulf of Mexico because of Mississippi River) Ecological Impacts of Oil Spills -petroleum in ecosystems -chemical dispersants used -not fully understood ***By having Relief Wells we can reduce accidents Transition Zones are extremely sensitive and by dumping we are poisoning oceans, organisms, and creating benthic zones Human systems collapse when exceeded carrying capacity Week 1, Lecture 2 Abiotic: non-living organism Biotic: living organism Sustainability: effort to keep environment healthy Environment: pertains to everything IPAT: Impact of Population, Affluence, and Technology upon the environment Paul Erlich’s Population Bomb novel *Collapsing Societies Easter Island, Mayan civilization, Anasazi Are we moving in correct direction? Sustaining our society or is it collapsing? AWARENESS IS NEEDED! ***Sustainable Development: creating society in a healthy way, society/habitats built to endure factors Rapa Nui (Easter Island)  1722  Mystery 900 statues been built  Island highly tree less believed first settlers therefore, deforestation impact the islands ecosystem  Exceeded their carrying capacity  Class society, therefore, intergroup conflict when resources depleted Anasazi  U.S. southwest 1400-700 BP  Likely abandoned due to drought Mayan  1700-1100 BP  Cities collapsed because of climate change  Conflict because of resources Fatehpur Sikri  1571-1585 (in India)  Abandoned due to lack of water Chernobyl (Ukraine)  1986 abondoned after nuclear accident Stressors in Canada Population growth, resource depleation, waste production, DDT, makes sustainability difficult ! Estimated 8 million people by 30’s! more resources needed for more people Alien chemicals: DDT, biotoxins, CFC, solvents, etc. These chemicals causing a ‘hole’ in ozone layer BUT because of new bylaws thinning is slowing Species invaders are causing depletion in resources (emerald ash, borer, lampreys, Asian Carp, etc.) then spreading Anthro: change occurring due to human activity systematic: global scale (ocean circulation, atmospheric system) cumulative: small cha
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