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3.3 Conservation and regeneration

Syllabus
First assessment 2026
Topic
3.3
Level
HL

Objective notes

14 learning objectives
3.3.1Preservation justifications

• Aesthetic, ecological, economic, ethical, social

3.3.2Conservation strategies

• Species-based: ex situ (zoos, botanic gardens, CITES, seed banks)

• Habitat-based: in situ (national parks, reserves, sanctuaries)

3.3.3Mixed conservation approach

• Both habitat and particular species considered

• Flagship/keystone species used to justify habitat conservation

3.3.4Convention on Biological Diversity (CBD)

• UN treaty addressing species and habitat conservation

• National strategies for conservation and sustainable use

• Includes Nagoya Protocol (equitable sharing of genetic resources)

3.3.5Habitat conservation strategies

• Protect species by conserving natural environment

• May require wild area protection or active management

3.3.6Effective conservation factors

• Understanding target species biology

• Size and shape of conservation areas

• Edge effects, wildlife corridors for connectivity

• UNESCO biosphere reserves: pristine core, buffer zones, transition zones

3.3.7Rewilding

• Regenerates natural processes in ecosystems

• Methods: apex predator reintroduction, habitat connectivity, cessation of agriculture

3.3.8Conservation measures

• Reverse biodiversity decline

• Operating within biodiversity planetary boundary

• Individual, collective, national, international levels

3.3.9Perspectives and conservation strategy choice

• Environmental perspectives and value systems impact choices

• Success depends on: community support, funding, education, legislation, research

3.3.10(HL)—Organization success factors

• Media use, speed of response, diplomatic constraints

• Financial resources, political influence

3.3.11(HL)—Positive feedback in rewilding

• Enhance biodiversity and promote ecosystem equilibrium

• Triggered by rewilding and habitat restoration

3.3.12(HL)—Rewilding benefits and limitations

• Benefits vs. land-use issues (food production)

• Examples: Knepp Estate, Affric Highlands, Gorongosa

3.3.13(HL)—Assessing conservation success

• Three levels: project success, community reception, best approach

• Examples: Willie Smits, Wangari Maathai's Green Belt Movement

3.3.14(HL)—Ecotourism

• Generates income for protection

• Can have negative societal and ecological impacts

ConceptIB ESS HL