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35 Cards in this Set
- Front
- Back
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What is ecology? |
A broad, integrated discipline of study that involves the relationships of organisms to each other and their environment |
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Who proposed the term ecology? |
Ernest haeckel in 1869 |
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What are biotic factors? |
A living Factor |
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What is an abiotic factor? |
A non-living factor |
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What is a population? |
Groups of individuals of the same species |
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What is a plant community? Biotic community |
Unit composed of all the species of plants occurring in a given area |
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What is an ecosystem? |
Living organisms interacting with one another and with factors of the nonliving environment constitute an ecosystem |
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What is biomass? |
Total mass of the living individuals present |
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What are xerophytes? |
Plant species that occur in areas of low precipitation and high temperatures |
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What are hydrophytes? |
Plants that grow in water and are modified for aquatic environments |
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What are producers? |
Organisms capable of carrying on photosynthesis / making their own food |
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What are primary consumers? |
Organisms that feed directly on producers |
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What are secondary consumers? |
Organisms that feed on primary consumers |
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What are decomposers? |
Organisms that break down materials to forms can be reassimilated by producers |
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What is allopathy? |
The negative effects of black walnut hulls on understory plants |
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What is life history? |
Traits that control plant survival and reproduction |
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What is the big bang reproduction strategy? |
A strategy where species devote all of their resources towards growth for most of their lives then when conditions are favorable most the energy goes into a final single reproductive burst |
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What is repeated reproduction? |
When plants can produce seeds throughout their lifetime |
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What is an annual? |
Plants that grow vegetativly with reproductive growth occurring towards the end of the season, once seeds have been produced the plants die |
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What is a biennial? |
Plants that put all their energy into growth for one year then on the second year put it into reproduction with the plants dying afterwards |
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What are perennials? |
Plants that grow for many years |
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What are some traits of competitive species? |
They're large, persistence, and fast-growing but often are slow to reproduce |
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What are stress tolerant species? |
They're small, are slow-growing, have a limited reproductive ability and do not respond to nutrients |
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What are the traits of a weed? |
Their fast-growing, are small, many are annuals, and reproduce quickly |
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What is phenology? |
The timing of crucial events in the life of a plant |
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What are aquifers? |
Porous rocks that collect water and transmit the water to Wells and Springs |
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What is succession? |
Something that occurs whenever and wherever there has been a disturbance of natural areas on the land or in water |
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What is primary succession? |
Succession involving the formation of soil in the beginning stages |
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What is secondary succession? |
Succession that takes place in areas that had previously developed vegetation and had experienced a drastic environmental change such as conversion to farmland |
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What is a climax community? |
A relatively stable plant community |
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How much of the Earth surface is dominated by humans? |
60% |
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What are the many problems that environmentalist claim? |
Climate change, ozone depletion, and loss of biodiversity |
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What is the greenhouse effect? |
The accumulation in the atmosphere of gases that permit radiation from the Sun to reach the Earth surface but prevent the heat from escaping back into space |
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What are the two gases in Ozone depletion? |
Methane and chlorofluorocarbons |
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When does asset disposition occur? |
After fossil fuels are burned |
