Science Chapter 2 Glossary Terms
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- -all the individuals which occupy a particular area at one time
- e.g. The population of bass in a certain aquatic ecosystem
- -the accelerated growth that makes a J-shaped curve when the population is graphed with time
- -A factor that restrains the growth, distribution or the amount of population in an ecosystem
- e.g. food, nutrients, and energy
-the size of a population that can supported indefinitely by the available resources and services of an ecosystem. Beyond this carrying capacity no additional individuals can be supported.
- -the place or function of a given organism within its ecosystem, the way that an organism occupies a position in an ecosystem.
- e.g. space a bat takes up while sleeping in a cave is part of its ecological niche
- -An organism that kills and consumes other organisms
- e.g. carnivorous plants in bogs which eat insects
- -An organism that is eaten as food by a predator
- e.g. the insect which is eaten by the carnivorous plant.
- -Symbiotic relations where two species benefit from each other through the relationship
- e.g. the relationship between coral and algae (coral provides protection, etc.) the algae provides the coral with 90% of it's energy requirements.
- -An organism whose niche depends on a close association with a larger host organism
- e.g. the brain worm to a white-tailed deer
- -when two or more organisms compete for the same resources, like food and space.
- e.g. Dandelions compete with grass for the same resources.
-Use that does not lead to long term depletion of a resource or affect the diversity of the ecosystem from which the resource is obtained.
- -The amount of time that it takes for the population to double in size
- e.g. It took 650 years or the human population to double from a quarter-billion.
- -The measure of the impact of an individual or a population on the environment
- -Data used to measure an ecological footprint include energy consumption, land use, and waste production.
- -A pattern of activity that leads to a decline in the function of an ecosystem
- e.g. Ecological footprints this large in our world with finite resources and is dependent on fossil fuels.
-Use of the Earth's resources, including land and water, at levels that can continue forever
- -The benefits experienced y organisms, including humans, that are provided by sustainable ecosystems.
- e.g. cycling of nutrients, provision of food and clean water.
-The change of non-desert land into a desert ----This can result from climate change and unsustainable farming or water use.
- -A form of tourism that is sensitive to the health of an ecosystem and involves recreational activities provided by sustainable ecosystems.
- e.g. Annual migration of birds, boat trips to view aquatic animals.
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