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Intro marine ecology_power_point (1)

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teague

teague

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  • 1. Intro Marine Ecology
    • Ecology : relationship of living things/environment
    • Marine Ecology : interdependence of all organisms in the ocean .
  • 2. Marine Environment
    • Abiotic Factors : nonliving elements/ Chemical, Geological, Physical Variables
    • Biotic Factors :organisms / interactions among organisms
  • 3. What is abiotic/biotic?
    • Water
    • Light
    • Temperature
    • pH value
    • Salinity
    • Substratum
    • Plants
    • Dissolved Gases
    • Pressure
    • Tides
    • Currents
    • Animals
    • Waves
    • Exposure to Air
  • 4. Biotic Levels of Organizations
    • Individual : one organism
    • Population : group of individuals of one species (organisms) Habitat
    • Communities : plants and animals inhabiting the same physical area .
    • Ecosystems : Many communities / large geographic area.
  • 5. Population
  • 6. Communities
  • 7.  
  • 8. Characteristics of an Ecosystem
    • Requires a source of energy.
    • Organisms capturing energy / produce organic molecules.
    • Organic material available to all.
    • Cycle nutrients between environments
  • 9. Zonation of Marine Environment
    • See handout
  • 10. Ecological Distribution
    • Pelagic Organisms : in the water Plankton - drifting organisms. Nekton - swimmers
    • Benthic Organisms : in or on substrate (sand/rock) burrow, crawl, walk, or affixed Epifauna :live on. Infauna :live within
  • 11. Plankton/ Nekton
  • 12. Epifauna/Infauna
  • 13. Trophic (Feeding) Relationships
    • Autorophs : absorb sunlight energy & transform inorganic mineral nutrients into organic molecules. Producers
    • Heterotrophs : consumers / cannot synthesize their own food. Need producers.
    • Decomposers : live on dead plant and animal. Break down organic material / inorganic nutrients.
  • 14.  
  • 15.  
  • 16.  
  • 17.  
  • 18. Energy Transfer
    • Pyramid of numbers : numerical relationship of trophic (feeding) levels.
    • Energy Pyramid : energy distribution at each trophic level.
  • 19. Pyramid of Numbers
  • 20. Pyramid of Numbers
  • 21. Pyramid of Numbers
  • 22. Energy Pyramid
  • 23. Energy Pyramid
  • 24. Lost Energy/Energy Pyramid
    • Consumer do not consume (eat) entire organism.
    • Energy used in capture (food).
    • Energy used in metabolism.
    • Energy lost as heat.
    • * 10% energy pass to next level.
  • 25. Lost Energy/Energy Pyramid
  • 26. Food Chain/Energy Pyramid
  • 27. Food Web
  • 28. Types of Food Relationships
    • Predator - Prey : Predator Needs? Prey Needs?
    • Scavenger : Feed on dead plants and animals
    • Symbiotic / Symbiosis : nutritional association
  • 29.  
  • 30. Symbiosis in Marine Animals
    • Parasitism : (+;-) one benefits, one harmed or interfered with body function.
    • Commensalism : (+;0) one benefits, one neither gains or loses.
    • Mutualism : (+;+) both benefit.
  • 31. Parasitism/ Isopod on Fish
  • 32. Commensalism/Anemone &Crab
  • 33. Mutualism/Clown & Sea Anemone
  • 34. Mutualism/Clam & Zooplankton
  • 35. Population Cycles
    • Changes season/season and year/year
    • Regulated by Natality (new organisms) and Mortality (rate of death)
    • What are factors that affect population cycles?
  • 36. Biomass Lab Activity
    • The Living Ocean:
  • 37.