General ecology

• .
• are called its habitat.
• that particular organism.
• The niche is an important ecological
• notion that considers the role
• that organism or species plays
• in its ecosystem.
There are actually 4 fundamental components of all ecosystems:
• Food makers, or producers
• Consumers, or eaters of plants animals
• Decomposters, a special class of consumers that gets food from decaying plants and animals.
• Nonliving components
• The first 3 of these are
• Biotic (living) components
• Biomes are the major types
• of biotic communities
• of the world.
• The nonliving things are called abiotic.
• Some major
• terrestrial biomes:
• Tundra,
• Coniferous forest,
• Grassland,
• Desert,
• Rain forest.
• Many of the basic principles of ecology relate to populations and
• Communities. Organisms are affected by all of the chemical
• and physical factors of their surroundings.
• LIMITING FACTOR
• One factor usually
• Outweighs yet
• Others in determing
• Growth.
• The limiting factor is the primary
• Determinant of growth in an
• Ecosystem, because it easily
• Falls bellow the range of tolerance
• Of key organism.
• PHOSPHORUS
• PRECIPITATION
• LIGHT
• SOIL
• There are these
• limiting factors:
• Living organisms really require
• only two things from the environment:
• Chemicals to make up the substance of the organisms
• Energy, the power necessary to make substance “go”
• Chemicals are used over and over again within ecosystems, but energy
• Can’t be used over and over. Energy is the capacity of ability to do...

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