organisms and their environment
DESCRIPTION
Basic vocabulary and organization of ecology. This is for a high school environmental science class. Information is from the book Environmental Science: toward a sustainable future 11th edition.TRANSCRIPT
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Ecology
Basic Needs of Living thingsOrganisms and Their Environment
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Ecology• The study of the relations ships between
organisms and between organisms and their environment.
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What do you mean environment?
The environment is made up of two things
1. Abiotic Factors: Non-living (never was living) Examples: rocks, water, air, weather, sunlight, sand, temperature…
2. Biotic Factors: Living ,once living things or part of a living organism. Examples: Leaves, trees, poop, whales, flowers, mushrooms.
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Organism
• Any unicellular or multicellular form exhibiting all the characteristics of life, an individual
• The lowest level of organization in ecology
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Species
• All the organisms of a single kind (plant, animal or microbe).
• Organisms can and do mate and produce fertile offspring
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Not found in nature, not a
biological species
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Population
• A group of individuals of the same species that live in a given area and interbreed.
• Example: Wolves of Yellow Stone Park, The ants at AISE, Plumeria’s in Cairo.
• Population vs. Species: Gray wolves of Yellowstone park vs. gray wolves of the world.
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Biotic Community (Biota)
• All the living organisms that live in a particular area
• Includes vegetation to animals to microscopic creatures such as bacteria.
• depend on one another
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Ecosystems
• An interactive complex of the communities and the abiotic environment affecting them within a particular area.
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Ecotones and Biomes
Ecotone: The transition area between two ecosystems
Share’s many characteristics between both ecosystems
Biome: a large area of Earth’s surface with the same climate and similar vegetation.
Examples: Tropical rainforest, tundra, grasslands, deserts
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Biosphere
• The overall ecosystem of the Earth.
• All ecosystems are interconnected through global processes such as the water cycle and the atmospheric cycle.
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Hierarchy of life
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