science glossary terms part 2 ecology mrs day gr 9
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A group of organisms of ONE SPECIES that lives in the same place at the same time
Usually occurs under certain conditions, such as a species being introduced to a new habitat with unlimited resources. Does not occur for very long in nature, because factors limit the growth of the population (food, water, shelter ect.).
A factor that limits the growth, distribution or amount of a certain population in an ecosystem.
The size of a population that can be supported indefinitely (forever) by the resources and conditions of a given ecosystem. Population is at an equilibrium (doesn't go up or down) at carrying capacity.
An ecological niche includes resources they use, abiotic limiting factors that restrict how it can survive and biotic relationships that it has with other species. (how a certain species fits in to an ecosystem).
An organism that kills and consumes other organisms.
An organism that is eaten and consumed by a predator for food.
- A symbiotic relationship between two species in which both species benefit from the relationship.
- eg. bees pollinating a flower
- An organism whose niche is dependent on a close association with a larger host organism.
- eg. tape worm
When two species compete for the same resources such as food, water, shelter ect.
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 length if time it takes for a population to double in size.
A measure of the impact of an individual or population on the environment in terms of energy consumption, land use and waste production
- A pattern of activity that leads to decline in the function of an ecosystem.
- eg. the population of humans
The use of earths resources, used in a way that could be sustained forever.
- The benefits experienced by organisms (including humans) that are provided by sustainable ecosystems
- eg. fresh water
- The change of non desert land into desert. It may be a result of climate change, unsustainable farming, water use ect.
- eg. parts of the boreal forest
- A type of tourism that is conscious of the ecosystem around it and involves activities that are provided by sustainable ecosystems
- eg. snowshoeing
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