3.3 Conservation and regeneration

Syllabus
First assessment 2026
Topic
3.3
Level
HL

Test a Conservation Argument through Value Lenses

A conservation argument can be aesthetic, ecological, economic, ethical or social; identify the value before judging its strength.

Aesthetic values beauty; ecological values functions; economic values income or future resources; ethical values intrinsic worth or responsibility; social values health, identity and culture. One example can support several lenses, but the reasoning differs.

A wetland may attract visitors (economic), reduce floods (ecological) and hold cultural meaning (social); do not count these as the same reason.

Ethical/intrinsic value; tourism income would be economic, not the same claim.

Different values are not interchangeable evidence; name the value and its decision implication.

Match In Situ and Ex Situ to the Conservation Job

In situ protects organisms within functioning habitat; ex situ protects organisms or genetic material outside it.

In situ measures such as national parks, nature reserves and sanctuaries maintain habitats, interactions and ecological processes. Ex situ measures such as zoos, botanic gardens and seed banks protect selected organisms or genetic material outside the habitat; CITES limits international trade in threatened species.

A seed bank can preserve a crop allele while a protected landscape maintains pollinators, soil and natural selection.

In situ habitat protection; ex situ secures selected organisms or genes, not all interactions.

Ex situ is not a replacement for habitat conservation; choose based on the threat and what must be preserved.

Turn a Focal Species into a Mixed Conservation Path

A focal-species programme works best when direct protection is paired with the habitat and community conditions that sustain it.

Captive breeding, research and public attention can support a flagship; habitat protection and corridors preserve food, breeding and other species. A flagship is chosen for visibility, not necessarily disproportionate ecological effect.

Panda breeding is more durable when bamboo forest is reconnected and local land-use incentives reduce fragmentation.

Measured habitat condition, connectivity and outcomes for associated communities or species.

Flagship and keystone are different concepts: popularity does not prove disproportionate ecological impact.

Translate CBD Goals into the Correct Policy

The Convention on Biological Diversity links conservation, sustainable use and fair cooperation; its protocols solve different problems.

CBD parties develop national strategies for conserving and sustainably using biodiversity and cooperate on protected marine areas beyond national jurisdiction. The Nagoya Protocol addresses fair and equitable benefit-sharing from genetic resources; CITES separately regulates international wildlife trade.

A company using a plant genetic resource raises Nagoya benefit-sharing questions; exporting a protected animal raises CITES trade questions.

Nagoya Protocol, not CITES; match the policy to the mechanism.

International conservation names are not interchangeable—identify the regulated activity first.

Choose Protection or Active Habitat Management

Use protection when preventing disturbance is enough; use active management when a diagnosed pressure blocks recovery.

Name the limiting threat before choosing the action. Active management may remove invasive plants or restore water levels. In a fenced New Zealand ecosanctuary, introduced mammalian predators are removed and pest-exclusion fencing reduces reinvasion, allowing native populations and ecosystem processes to recover.

A reserve protects a wetland from new clearing; if invasive plants already suppress natives, removal and water restoration are also needed.

For a fenced ecosanctuary, verify predator removal, fence integrity, reinvasion risk and native-species response; surrounding land use and distance from urban pressure also affect success.

More intervention is not better; target the diagnosed bottleneck and verify the outcome.

Design a Reserve from the Target Species Outward

Reserve design starts with the target’s territory, breeding, movement and connectivity needs, then adds shape, corridors and buffer zones.

Compact cores reduce edge effects; corridors restore gene flow; buffer zones reduce conflict and compatible-use pressure; transition zones can support sustainable livelihoods. Roads and farms still require management.

Glacier Bay and Admiralty Island Biosphere Reserve in Alaska protects glacier succession, mature temperate rainforest and diverse wetland and marine habitats. A protected core limits activity; buffer and transition areas support research, tourism, managed hunting or fishing and local participation, so conservation is linked to surrounding human use.

Documented movement or gene-flow need between habitat patches, not a corridor drawn without a target.

A larger reserve is not automatically better if it is disconnected, edge-dominated or socially unenforceable.

Rewild Processes, Not a Frozen Picture of Nature

Rewilding aims to restore self-sustaining processes such as predation, grazing, succession, seed dispersal and connectivity.

It may involve reintroductions, habitat reconnection, reduced intensive use or temporary control of invasive pressures. Success is an observable process response, not a return to one imagined past snapshot.

At Hinewai, stopping intensive farming allowed succession after initial non-native control, with native vegetation and birds returning.

Process and outcome—natural regeneration, food-web interactions, habitat connectivity and target species—not only animal counts.

Rewilding is not ‘do nothing everywhere’; early intervention or ongoing safeguards may be necessary.

Coordinate Biodiversity Action across Governance Levels

Biodiversity recovery needs actions at individual, community, national and international levels that address the same causal chain.

Individuals alter demand and report data; communities restore habitat; governments regulate and fund; international bodies coordinate targets, finance and cross-border evidence. Indicators should track pressure and function.

Consumer demand changes only help a forest if community stewardship, national enforcement and supply-chain cooperation also reduce clearing.

Other links in the pressure pathway may remain unchanged or shift the problem elsewhere.

More actors do not guarantee coordination; align actions, indicators and accountability.

Separate Why a Strategy Is Chosen from Whether It Works

A worldview can explain why a conservation strategy is preferred, but implementation conditions determine whether it works.

Ecocentric arguments may favour intrinsic value and low intervention; anthropocentric or technocentric arguments may favour human benefits or tools. Success still needs legitimacy, finance, education, law and monitoring.

A community may support in situ protection for cultural reasons, yet the reserve still fails without funding and enforceable rules.

A strategy can fit a society’s values yet still fail operationally; rationale and capacity are separate tests.

Do not reduce perspectives to fixed personalities; treat them as tendencies in a decision context.

Audit Conservation Capacity, Not Organization Type

HL only

Compare an organization by its authority, speed, finance, reach and accountability—not by whether it is governmental, intergovernmental or an NGO.

UNEP can coordinate states, assessments and diplomacy but may move slowly. A governmental agency such as the US Environmental Protection Agency can regulate and fund action within national authority but faces political and budget constraints. WWF can campaign and run projects quickly but lacks legal enforcement.

A cross-border trade issue may need intergovernmental authority, while a local monitoring project may benefit from NGO speed and community trust.

Its actual lever, resources, track record and fit to the problem—not its label.

No organization type is universally strongest; capacity and context decide.

Close the Loop in Restoration Feedback

HL only

Restoration can create a reinforcing loop: more native vegetation improves shade, soil and water, which improves further establishment.

Identify the starting intervention, changed condition, biological response and feedback. Resources and negative feedback eventually limit growth; the loop does not imply endless increase.

Plant cover reduces erosion, retained soil improves seedling survival, and more seedlings further stabilize the slope.

Later survival or recruitment rises with the improved condition, relative to a comparable untreated site.

Positive feedback amplifies a change; it does not guarantee an unlimited or stable final state.

Weigh Knepp’s Rewilding Gains against Trade-offs

HL only

Evaluate rewilding by measured ecological gains alongside displaced production, costs, acceptance and uncertainty about the resulting state.

At Knepp, reduced intensive farming and free-ranging grazers produced a habitat mosaic and reported returns of scarce species, with possible carbon and tourism benefits. Those gains do not erase food-production and management trade-offs.

A rise in bird richness supports ecological benefit, but a decision still asks who loses farm output and whether tourism income is reliable and shared.

Baseline biodiversity data, durability, costs, local acceptance and comparison with alternatives.

A celebrated case is not a universal prescription; transferability depends on site and governance.

Audit Conservation Success at Ecological, Social and Comparative Levels

HL only

A conservation project is not fully successful until ecological outcomes, community justice and comparative value are all tested.

Compare ecological targets with a baseline; ask who participated and benefited; then compare effectiveness, cost, durability and justice with plausible alternatives. Tree counts alone are insufficient.

The Green Belt Movement’s participation and planting are promising, but survival, watershed change and distribution of benefits still need measurement.

Survival and ecological function data, documented participation/benefits and a credible comparison.

Outputs (trees planted, meetings held) are not outcomes (survival, recovery, justice).

Trace Money, Pressure and Power in Ecotourism

HL only

Ecotourism helps conservation only when revenue, ecological pressure and decision power are tracked together.

Fees and jobs can fund monitoring and anti-poaching, while vehicles, waste, disturbance and lost grazing access create costs. Ask who owns businesses, where money goes and whether residents decide.

At Belize’s Community Baboon Sanctuary, landowners changed land management to protect black howler monkey habitat; local women help run the sanctuary, while guided hikes, a museum and small tourism businesses create income. Evaluate the case with both monkey and habitat trends and with who controls and receives tourism benefits.

Compare revenue recipients, local decision rights, household outcomes and ecological trends—not visitor numbers alone.

Calling tourism ‘eco’ does not prove conservation or justice; follow money, impact and power.

Objective notes

14 learning objectives
3.3.1Preservation justifications• Aesthetic, ecological, economic, ethical, socialView3.3.2Conservation strategies• Species-based: ex situ (zoos, botanic gardens, CITES, seed banks)• Habitat-based: in situ (national parks, reserves, sanctuaries)View3.3.3Mixed conservation approach• Both habitat and particular species considered• Flagship/keystone species used to justify habitat conservationView3.3.4Convention 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)View3.3.5Habitat conservation strategies• Protect species by conserving natural environment• May require wild area protection or active managementView3.3.6Effective 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 zonesView3.3.7Rewilding• Regenerates natural processes in ecosystems• Methods: apex predator reintroduction, habitat connectivity, cessation of agricultureView3.3.8Conservation measures• Reverse biodiversity decline• Operating within biodiversity planetary boundary• Individual, collective, national, international levelsView3.3.9Perspectives and conservation strategy choice• Environmental perspectives and value systems impact choices• Success depends on: community support, funding, education, legislation, researchView3.3.10(HL)—Organization success factors• Media use, speed of response, diplomatic constraints• Financial resources, political influenceView3.3.11(HL)—Positive feedback in rewilding• Enhance biodiversity and promote ecosystem equilibrium• Triggered by rewilding and habitat restorationView3.3.12(HL)—Rewilding benefits and limitations• Benefits vs. land-use issues (food production)• Examples: Knepp Estate, Affric Highlands, GorongosaView3.3.13(HL)—Assessing conservation success• Three levels: project success, community reception, best approach• Examples: Willie Smits, Wangari Maathai's Green Belt MovementView3.3.14(HL)—Ecotourism• Generates income for protection• Can have negative societal and ecological impactsView