Irish Leaving Cert Ecology Definitions
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| Ecology | The study of the interaction between living things and their environment
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| Biosphere | The part of the planet containing living organisms
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| Ecosystem | A group of clearly distinguished organisms that interact with their environment
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| Habitat | The place where an organism (plant or animal) lives
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| Population | All the members of the same species living in an area
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| Community | All the different populations in an area (groups of different species)
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| Abiotic factors | Non-living factors ex currents, altitude
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| Biotic factors | Living factors ex. Food, predators
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| Climatic factors | Factors referring to the weather over a long period of time ex temperature, light intensity
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| Edaphic factors | Factors relating to the soil ex soil pH, soil type
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| Aquatic Environmental Factors | Light; currents; wave action; salt content; oxygen concentration
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| Energy Flow | Energy flows through an ecosystem, whereas nutrients (minerals) are recycled.
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| Producers | Organisms that can make their own food through photosynthesis (or chemosynthesis)
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| Consumers | Organisms that take in food from another organism
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| Herbivore | Animals that feed on plants only ex deer, sheep, rabbits
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| Carnivore | Animals that feed on other animals only ex lions, seals, eagles
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| Omnivore | Animals that feed on both plants and other animals ex, humans, badgers
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| Food Chain | A sequence of organisms in which each one is eaten by the next member in the chain ex: dandelion, butterfly, thrush, hawk
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| Trophic level | A feeding stage in a food chain
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| Food Web | A series of interlinked food chains.
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| Pyramid of Numbers | Representation of the number of organisms at each trophic level.
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| Niche | The functional role an organism plays in the community. (Organisms with identical niches will compete with each other.)
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| Nutrient Recycling | The way in which elements are exchanged between the living and non-living components of an ecosystem.
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| Carbon Cycle | The process by which carbon from the environment is converted to carbon in living things.
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| Nitrogen Cycle | To take nitrogen from the air and make it available for use by living things.
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| Nitrogen Fixation | The conversion of nitrogen gas into ammonia, ammonium and nitrates
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| Nitrification | The conversion of ammonia and ammonium to nitrates and then to nitrites
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| Denitrification | The conversion of nitrates into nitrogen gas
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| Pollution | Any harmful addition to the environment
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| Pollutants | Chemicals that contaminate the natural environment
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| Conservation | The protection and wise management of our natural resources and environment.
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| Eutrophication | Condition where lakes become over-enriched with nutrients, resulting from excess artificial fertilisers washed into rivers and lakes. Leads to lack of oxygen in the water
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| Waste Management | Preventing pollution and conserving the environment. Where possible it involves recycling.
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
embarrett
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