The study of the interactions between organisms and between organisms and their habitats.

The part of the planet containing living organisms.

A group of clearly distinguished organisms that interact with their environment as a unit.

The place where a plant or organism lives.

All the members of the same species living in an area.

All the the different populations in an area.

Weather over a long period of time.

Relate to soil: factors such as the soil pH, soil type and moisture, air and mineral content of the soil.

Organisms that carry out photosynthesis.

Organisms that tale in food from another organism.

A sequence of organisms in which each one is eaten by the next member in the chain.

A feeding stage in a food chain.

Two or more interlinked food chains.

Represents the number of organisms at each trophic level in a food chain.

An Ecological Niche of an Organism

The functional role that the organism plays in the community.

The way in which elements are exchanged between the living and non-living components of an ecosystem.

The conversion of of nitrogen gas into ammonia, ammonium or nitrate

The conversion of ammonia and ammonium compounds into nitrites and nitrates.

The conversion of nitrates into nitrogen gas.

Any harmful addition to the environment

Substances that cause pollution

The wise management of our existing natural resources, in order to maintain a wide range of habitats and prevent the the death and extinction of organisms.

Occurs when organisms actively struggle for a resource that is in short supply.

Intra-specific competition

Takes place between members of the same species.

Occurs between members of different species.

An active physical contest between two individual organisms.

All the competing individuals get some of the resource.

The catching, killing and eating of another organism.

An organism that catches, kills and eats another organism.

The organism that is eaten by the predator.

When two organisms of different species live in close association and one organism obtains its food from, and to the disadvantage of, the second organism.

When two organisms of different species live, and have to live, in close association and at least one of them benefits.

Records the the presence or absence of something.

Records the numbers or amounts that are present.

Any alteration that improves an organism's chances of survival and reproduction.

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Ecology

Ch. 4-6 Definitions

Term	Definition
Ecology	The study of the interactions between organisms and between organisms and their habitats.
The Biosphere	The part of the planet containing living organisms.
An Ecosystem	A group of clearly distinguished organisms that interact with their environment as a unit.
A Habitat	The place where a plant or organism lives.
A Population	All the members of the same species living in an area.
A Community	All the the different populations in an area.
Abiotic Factors	Non-living factors
Biotic Factors	Living Factors
Climatic Factors	Weather over a long period of time.
Edaphic Factors	Relate to soil: factors such as the soil pH, soil type and moisture, air and mineral content of the soil.
Producers	Organisms that carry out photosynthesis.
Consumers	Organisms that tale in food from another organism.
A Grazing Food Chain	A sequence of organisms in which each one is eaten by the next member in the chain.
A Trophic Level	A feeding stage in a food chain.
A Food Web	Two or more interlinked food chains.
A Pyramid of Numbers	Represents the number of organisms at each trophic level in a food chain.
An Ecological Niche of an Organism	The functional role that the organism plays in the community.
Nutrient Recycling	The way in which elements are exchanged between the living and non-living components of an ecosystem.
Nitrogen fixation	The conversion of of nitrogen gas into ammonia, ammonium or nitrate
Nitrification	The conversion of ammonia and ammonium compounds into nitrites and nitrates.
Denitrification	The conversion of nitrates into nitrogen gas.
Pollution	Any harmful addition to the environment
Pollutants	Substances that cause pollution
Conservation	The wise management of our existing natural resources, in order to maintain a wide range of habitats and prevent the the death and extinction of organisms.
Competition	Occurs when organisms actively struggle for a resource that is in short supply.
Intra-specific competition	Takes place between members of the same species.
Inter-specific	Occurs between members of different species.
Contest Competiton	An active physical contest between two individual organisms.
Scramble Competition	All the competing individuals get some of the resource.
Predation	The catching, killing and eating of another organism.
A predator	An organism that catches, kills and eats another organism.
Prey	The organism that is eaten by the predator.
Parasitism	When two organisms of different species live in close association and one organism obtains its food from, and to the disadvantage of, the second organism.
Symbiosis	When two organisms of different species live, and have to live, in close association and at least one of them benefits.
A qualitative study	Records the the presence or absence of something.
A quantitative study	Records the numbers or amounts that are present.
An Adaptation	Any alteration that improves an organism's chances of survival and reproduction.

Created by: FROmine

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