basics of the environment: ecology justin ray m guce
TRANSCRIPT
BASICS OF THE ENVIRONMENT:
ECOLOGY
Justin Ray M Guce
What is ECOLOGY???
ORGANISMS
ABIOTIC FACTORS
INTERACTIONS
RELATIONSHIPS
CYCLES
BIOTIC FACTORS
What is ECOLOGY???• Interactions among
organisms and between organisms and their environment
• Ernst Haeckel (1866)
What is ECOLOGY???
Oikos (greek) house
BIOSPHERE- Largest house in nature
LEVELS of ORGANIZATION
BIOMES
SPECIES
COMMUNITY
POPULATIONECOSYSTEM
TERMS to REMEMBER
• Ecosystem– Biological
community + physical environment
• Ecological Niche– Status or role of an
organism in its environment
TERMS to REMEBER
• Ecological succession– sequence of communities– development in an area– colonization stable climax community
ECOLOGICAL SUCCESSION
• Climax community– relatively stable
ecosystem – last stage of ecological
succession.
• Opportunist species– Plant species(short life-
span)– producing seeds.
• Pioneer plants/communities– first to be established– Area empty of life
• Primary succession:– Succession – completely empty of
life
• Secondary succession– life once existed but
has then been destroyed
FLOW OF ENERGY
TROPHIC LEVELS
FEEDING RELATIONSHIPS
ECOLOGICAL PYRAMIDS PYRAMID of
NUMBERS
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