Unit 1- Intro Flashcards
Environmental Science:
Pursuit of knowledge about workings of the environment and our interactions with it
Environmentalism:
Social movement dedicated to protecting the natural world from undesirable changes brought by human choices
Environment:
Sum total of our surroundings, including all biotic and abiotic components
Environmental Geography:
Study of interrelationships between human and biophysical systems across a variety of spatial and temporal scales
Ecological Footprint:
• Tool used to express environmental impact of an individual or population
• Calculated in terms of area of land and water required to provide materials that a person or population consumes, and to absorb or recycle the wastes produced
Inverse of carrying capacity- measure of land and water required to sustain an individual, rather than the number of individuals that can be sustained by an area of land or water
Biocapacity:
• Capacity of a terrestrial or aquatic system to be biologically productive and to absorb waste
When a population exceeds or overshoots the carrying capacity or biocapacity of a system, the system will be at risk of permanent damage
Manipulative Experiment:
Researcher manipulates the independent variable
Natural Experiments:
• Can’t directly manipulate behaviour, but nature has already done that for us
• Interpret results from nature
i.e. compare closely related species to study evolution
Paradigm Shifts:
Abandoning a dominant theory due to new evidence in favour of a new one
Globalization:
Increasing global interconnectedness in train, politics, and movement of people
Cornucopian View:
Belief that people will find ways to make Earth’s natural resources meet all our need indefinitely
Cassandras View:
Belief that the world will be subjected to doom and disaster due to human impact on the environment
Cycles:
Shapes landscapes around us and guide flow of key chemical elements and compounds that support life and regulate climate
Resource Management:
Strategic decision making and planning aimed at balancing use of a resource with its protection and preservation
Stock:
• Harvestable portion of the resource
If stock is being harvested or withdrawn at a faster rate than it can be replenished then the stock will eventually be depleted
Carrying Capacity:
• Measure of the ability of a system to support life
• Number of individuals of a particular species that can be sustained by the biological productivity of a given area of land
When the carrying capacity is exceeded, the population of that species will decline or collapse, or the system itself will be altered, damaged, or depleted
Tragedy of the Commons:
• Each individual withdraws whatever benefits are available from the common property as quickly as possible, until the resource becomes overused and depleted
Ultimately, carrying capacity of the system will be exceeded
Sustainability:
• Guiding principle of modern environmental science
Developing solutions so that Earth’s resources are not depleted, and can be left behind for future generations
Sustainable Development:
• Use of renewable and non-renewable resources in a manner that satisfies our current needs without compromising future availability of resources