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        • ESS Topic 1.1: Environmental Value Systems
        • ESS Topic 1.2: Systems and Models
        • ESS Topic 1.3: Energy and Equilibria
        • ESS Topic 1.4: Sustainability
        • ESS Topic 1.5: Humans and Pollution
      • ESS Topic 2 Ecosystems and Ecology >
        • ESS Topic 2.1: Species and Population
        • ESS Topic 2.2: Communities and Ecosystems
        • ESS Topic 2.3: Flows of Energy and Matter
        • ESS Topic 2.4: Biomes, Zonation and Succession
        • ESS Topic 2.5: Investigating Ecosystems
      • ESS Topic 3: Biodiversity and Conservation >
        • ESS Topic 3.1: Introduction to Biodiversity
        • ESS Topic 3.2: Origins of Biodiversity
        • ESS Topic 3.3: Threats to Biodiversity
        • ESS Topic 3.4: Conservation of Biodiversity
      • ESS Topic 4: Water and Aquatic Food Production Systems and Society >
        • ESS Topic 4.1: Introduction to Water Systems
        • ESS Topic 4.2: Access to Fresh Water
        • ESS Topic 4.3: Aquatic Food Production Systems
        • ESS Topic 4.4: Water Pollution
      • ESS Topic 5:Soil Systems and Terrestrial Food Production Systems and Society >
        • ESS Topic 5.1: Introduction to Soil Systems
        • ESS Topic 5.2: Terrestrial Food Production Systems and Food Choices
        • ESS Topic 5.3: Soil Degradation and Conservation
      • ESS Topic 6: Atmospheric Systems and Society >
        • ESS Topic 6.1: Introduction to the Atmosphere
        • ESS Topic 6.2: Stratospheric Ozone
        • ESS Topic 6.3: Photochemical Smog
        • ESS Topic 6.4: Acid Deposition
      • ESS Topic 7: Climate Change and Energy Production >
        • ESS Topic 7.1: Energy Source and Security
        • ESS Topic 7.2: Climate change – Causes and Impacts
        • ESS Topic 7.3: Climate change – Mitigation and Adaptation
      • ESS Topic 8: Human System and Resource Use >
        • ESS Topic 8.1: Human Populations Dynamics
        • ESS Topic 8.2: Resource Use in Society
        • ESS Topic 8.3 Solid Domestic Waste
        • ESS Topic 8.4 Human Population Carrying Capacity
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  • IBDP Environmental Systems and Societies (2024)
    • ESS Topics >
      • ESS Topic 1 Foundations >
        • ESS Subtopic 1.1: Perspectives >
          • Environmental Timeline
        • ESS Subtopic 1.2: Systems
        • ESS Subtopic 1.3 Sustainability
      • ESS Topic 2 Ecology >
        • ESS Subtopic 2.1:​ Individuals, Populations, Communities, and Ecosystems
        • ESS Subtopic 2.2: Energy and Biomass
        • ESS Subtopic 2.3: Biogeochemical Cycles
        • ESS Subtopic 2.4: Climate and Biomes
        • ESS Subtopic 2.5: Zonation, Succession and Change in Ecosystems
      • ESS Topic 3: Biodiversity and Conservation >
        • ESS Subtopic 3.1: Biodiversity and Evolution
        • ESS Subtopic 3.2: Human Impact on Biodiversity
        • ESS Subtopic 3.3: Conservation oand Regeneration
      • ESS Topic 4: Water >
        • ESS Subtopic 4.1: Water Systems
        • ESS Subtopic 4.2: Water Access, Use and Security
        • ESS Subtopic 4.3: Aquatic Food Production Systems
        • ESS Subtopic 4.4: Water Pollution
      • ESS Subtopic 5: Land >
        • ESS Subtopic 5.1: Soils
        • ESS Subtopic 5.2: Agriculture and Food
      • ESS Topic 6: Atmospheric Systems and Society >
        • ESS Subtopic 6.1: Introduction to the Atmosphere
        • ESS Subtopic 6.2: Climate change – Causes and Impacts
        • ESS Subtopic 6.3: Climate change – Mitigation and Adaptation
        • ESS Subtopic 6.4: Stratospheric Ozone
      • ESS Topic 7: Natural Resources >
        • ESS Subtopic 7.1: Resource Use in Society
        • ESS Subtopic 7.2: Energy Source
        • ESS Subopic 7.3 Solid Waste
      • ESS Topic 8: Human Populations and Urban Systems >
        • ESS Subtopic 8.1: Human Populations Dynamics
        • ESS Subtopic 8.2 Urban Systems and Planning
        • ESS Subtopic 8.3: Urban Air Pollution
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    • GR 10 Topic 1: Gas Exchange and Cellular Respiration
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    • GR10 Topic 3: Homeostasis and Thermoregulation
    • GR10 Topic 4: Water Balance >
      • How Much Is That Kidney
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    • Grade 9 Topic 1: Life Processes
    • GR9 Topic 2: Cells
    • GR 9 Topic 3: Macro Molecules
    • GR9 Topic 4 Cellular Movement
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image from Kaziranga National Park - Official Support Committee

option C.4: (Core) Conservation of biodiversity

Picture

Essential idea:
  • Entire communities need to be conserved in order to preserve biodiversity
Nature of science:
  • Scientists collaborate with other agencies—the preservation of species involves international cooperation through intergovernmental and non-governmental organizations. (4.3)
Understandings
C 4.1 U An indicator species is an organism used to assess a specific environmental condition.
C 4.2 U Relative numbers of indicator species can be used to calculate the value of a biotic index.
C 4.3 U In situ conservation may require active management of nature reserves or national parks..
C 3.4 U Ex situ conservation is the preservation of species outside their natural habitats.
​C 4.4 U Biogeographic factors affect species diversity
C 4.6 U ​Richness and evenness are components of biodiversity
Application
C 3.1 A Application: Case study of the captive breeding and reintroduction of an
endangered animal species.
​C 4.1 A Analysis of the impact of biogeographic factors on diversity
limited to island size and edge effects.
C 3.3 A Case study of the impact of marine plastic debris on Laysan albatrosses and one other named species.
Skills
C 4.1 S Analysis of the biodiversity of two local communities using Simpson’s
reciprocal index of diversity. (Guidance: ​The formula for Simpson’s reciprocal index of diversity is:
C 3.2 S Evaluation of eradication programmes and biological control as measures to reduce the impact of alien species.
Key Terms

Classroom Assignments:

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Useful Links
In the News
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Reference sites

​i-Biology 
Click4Biology
Online IB Biology Subject Guide
BioNinja
Biology For Life
IB Biology Help
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