Ecology - PowerPoint PPT Presentation

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Ecology
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Ecology

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  1. Ecology

  2. Patterns in Science • Scale aka perspective • Form and function • Identification, Organization & understanding • Context ie evolution • Unity of life

  3. Scale

  4. Scale

  5. Scale

  6. Scale

  7. Scale Ecology & evolution Organ systems & functions Cell structure & function DNA structure & function

  8. Form and Function

  9. Form and Function

  10. Form and Function and Function

  11. Identification, Organization & Understanding

  12. Identification, Organization & Understanding Taxonomy

  13. Unity of life

  14. Evolution

  15. Mechanisms of evolution • Darwin • Natural selection • Differential reproductive success- individuals best suited for a given environment will survive and contribute more off spring to the next generation

  16. Understand how living and non-living environments are interrelated

  17. Ecological Scale • Organismal ecology • Population ecology • Community ecology • Ecosystem ecology • Landscape ecology

  18. Abiotic • Non-living • Chemical and physical factors • N2, O2, CO2, C • Temperature • Light • Humidity • Minerals • Landscape

  19. Life depends on abiotic

  20. Chemical composition of human body

  21. N deficient

  22. Laws of chemistry & physics • 2nd law of thermodynamics • Energy cannot be created nor destroyed, converted • Law of conservation of matter • Matter cannot be created nor destroyed, just rearranged into different spatial patterns

  23. Life depends on abiotic

  24. Life depends on abiotic

  25. Abiotic factors • Temperature • Water • Sunlight • Wind • Rock/ soil

  26. Temperature • Biological processes • Critical Minimum & Maximun • Enzyme function • Reproduction • Digestion

  27. Water • Osmolarity • Ex. Fresh water fish in constant state of hypotonicity, water always rushing into its body • Dessication • In desert, movement onto land • Ex amphibian needing moist environment

  28. Sunlight • Base E source for all life • Photosynthesis • Competition • Photoperiodism

  29. Wind • Influence temperature • Water • Ability to function • Growth • Alpine • Substrate

  30. Krumholtz

  31. Substrate • Physical structure • Mineral composition • Stability • Porosity