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Biological magnification
Two types of response to pollutants.
Generalized pyramids of numbers in ecosystems
Generalized pyramids of biomass in ecosystems
Greatly simplified carbon cycle diagram
Greatly simplified nitrogen cycle
Greatly simplified phosphorous cycle
Precipitation-Temperature factors in ecosystems
Biomes as Fn(latitude & elevation)
Some effects of environmental stress
Population Growth and Decrease factors
Three generalized types of survivorship curves
J-shaped curve of population growth
Population crash
Secondary ecological succession
Ecosystem Characteristics of Immature and Mature Stages of Ecological Succession
Comparison of a Natural Ecosystem and a Simplified Human System
Natural Ecosystem Simplified Human system
(marsh grassland, forest) (cornfield, factory house)
Captures, converts, and stores energy from the sun
Produces oxygen and consumes carbon dioxide
Creates fertile soil
Stores, purifies, and releases water gradually
Provides wildlife habitats
Filters and detoxifies pollutants and waste products free of charge
Usually capable of self-maintenance and self-renewal
Consumes energy from fossil or nuclear fuel
Consumes oxygen and produces carbon dioxide from the burning of fossil fuels
Depletes or covers fertile soil
Often uses and contaminates water and releases it rapidly
Destroys some wildlife habitats
Produces pollutants and waste, which must be cleaned up at our expense
Requires continual maintenance and renewal at great cost

All too brief American Environmental History
Pre-European settlement
Sustainable livelihoods?
Collapse
Disease
Climate change
Empire and Colonialism discourses
Independence
Property rights & liaise faire economics

Environmentalism defined
As ideology - set of beliefs about important human activities and perceived sets of problems
As purposive action - changed the way humans relate to the environment
individual purposive action
collective action
leading to collective action -> environmental social movements

Manifest Destiny
Dominant 1620 to 1850, perhaps even now:
Moral and economic ideological rationale for resource exploitation
nature and her resources have no intrinsic value
nature unproductive and useless without application of human labor
human welfare depends on exploitation and development of nature
technologically optimistic that human inventiveness and technology can overcome any resource problem
resources are infinitely abundant for human use
rationale for European conquest/colonialism
still explicitly or implicitly a major countermovement to ÒenvironmentalismÓ
Lynn Townsend White, Jr. White's main area of research and inquiry was the role of technological invention in the Middle Ages. He believed that the Middle Ages were a decisive period in the genesis of Western technological supremacy, and that the "activist character" of medieval Western Christianity provided the "psychic foundations" of technological inventiveness. He also conjectured that the Christian Middle Ages were the root of ecological crisis in the 20th century, and wrote a highly influential article, "The Historical Roots of Our Ecologic Crisis", published in the journal Science in 1967.

American Environmentalism; part 1
Preservation & Transcendentalism(1830s - ): Nature important to support both the physical and spiritual life of humans, hence continued existence of wilderness and wildlife undisturbed by human action is necessary (ex., Wilderness Society, Sierra Club) Henry David Thoreau ÒOn Walden Pond,Ó Ralph Waldo Emerson, George Catlin, John Muir.
Conservation (1860s - ): Natural Resources should be scientifically managed from a utilitarian prospective to provide for the greatest good for the people over the longest period of time (Society of American Foresters) TD, Pinchot.
Wildlife Management (1890s-): The scientific management of ecosystems can ensure stable populations of wildlife, viewed as a crop from which excess populations can be harvested, particularly in creation and sport (Ducks Unlimited, Aldo Leopold).
Reform Environmentalism (1870s - peaked in 1960s): Human health is linked to ecosystem conditions like water quality and air pollution. To maintain a healthy human society, ecologically responsible actions are required, which can be developed  and implemented through the natural sciences (Environmental Disaster Fund - Love Canal).
Source: E&S, p. 273.

American Environmentalism; part 2
Environmental Justice (1970s - present): Ecological problems exist because of the structure of society and its imperatives, and the benefits of environmental exploitation accrue to the wealthy while the poor and marginal bear most of the costs.  Hence the resolution of environmental problems requires fundamental social change (CitizenÕs Clearinghouse for Hazardous Waste).
Deep Ecology (1980s - ): The richness and diversity of life has intrinsic values, so human life is privileged only to the extent of satisfying basic needs. Maintenance of biodiversity requires decreasing the human impact (Earth First!).
Ecofeminism (1980s - present): Ecosystem abuse us rooted in androcentric ideas and institutions.  Relations of complementarity rather than domination are required to resolve conflicts between culture/nature, human/nonhuman, and male/female relationships (World Women in Development and Environment).
Ecospiritualism (1990s- present): Nature is GodÕs creation, and humans have a moral obligation to keep and tend the creation, including biodiversity and unpolluted ecosystems (National Council of Churches, as well as some new evangelical church movements).
Source: E&S, p. 273.

Ralph Waldo Emerson