In situ conservation at HL: In situ conservation — protecting species in their natural habitat — is the same for SL and HL. At HL you weigh it against ex situ methods using cost, benefit and effectiveness.
Nothing extra to memorise here — just learn what in situ conservation means.
Free preview
This is the free notes preview
You're reading the free notes. Aimnova Pro unlocks the full study experience — and you can try it free for 7 days:
- FlashcardsLock in vocabulary and key terms with spaced repetition.
- Practice questionsAnswer exam-style questions and get instant AI marking.
- Mock exams & past-paper vaultSit full mocks and see exactly how examiners award marks.
- Personalised study planA daily plan built around your exam date and weak areas.
🌿 In situ conservation (in the wild)
Big Idea: In situ conservation is like keeping a team in its home stadium—everything they need is already there: food webs, shelter, climate, and interactions with other species.
What does in situ conservation include?
- Protected areas (national parks, nature reserves, marine protected areas)
- Habitat restoration (replanting native species, restoring wetlands, removing pollution)
- Wildlife corridors to connect habitats (safe movement between areas)
- Laws and enforcement (hunting bans, fishing limits, trade controls)
In situ protects the whole ecosystem, not just one species.
Study smarter, not longer
Most students waste 40% of study time on topics they already know. Our AI tracks your progress and optimizes every minute.
✅ Why in situ conservation works well
In situ conservation keeps species in the conditions they evolved for, so populations can function naturally.
- Protects food webs and ecosystem processes (pollination, decomposition, nutrient cycling)
- Keeps genetic diversity higher because populations are larger
- Allows natural selection and adaptation to continue
- Often protects many species at once (habitat-based conservation)
When in situ is difficult
- Habitat is already destroyed or fragmented
- Ongoing threats are hard to control (poaching, invasive species, pollution)
- Climate change shifts conditions faster than species can adapt
- Conflict with humans (farming, roads, urban growth)
In evaluation questions, say: In situ is best long-term, but may fail if threats cannot be reduced or habitat no longer supports the species.
🛠️ In situ tools (easy exam points)
- Protected areas + zonation (core zone, buffer zone, transition zone)
- Anti-poaching enforcement (patrols, penalties, monitoring)
- Sustainable harvesting (quotas, closed seasons, size limits)
- Community-based conservation (local people benefit → support protection)
- Eradication/control of invasive species
If a question asks for "methods", list 2–3 specific tools + explain how each reduces a threat.
Practice with real exam questions
Answer exam-style questions and get AI feedback that shows you exactly what examiners want to see in a full-marks response.
📝 Exam tips: in situ (what examiners reward)
Fast marks (Paper 1 / short answers): For 2–3 marks: give the definition + one example + one reason it helps biodiversity.
- Define in situ clearly (in the natural habitat).
- Name one tool: protected area / restoration / corridor / enforcement.
- Link to an outcome: higher survival, reproduction, gene flow, resilience.
Top-band evaluation (Paper 2, 7–9 marks): To reach top marks you must do more than list pros/cons. Add conditions (habitat quality + threat control) and finish with a judgement.
- 1. Start with 1-line definition (no long intro).
- 2. State why it’s preferred long-term (ecosystems + interactions).
- 3. Evaluate limits (enforcement, fragmentation, climate change).
- 4. Add one design point (core/buffer zones or corridors for gene flow).
- 5. Conclude: best when threats reduced; often combined with ex situ backup.
IB-style question — Advantage of in situ conservation
The Kaziranga Grassland Reserve in northeast India was established to protect the Indian one-horned rhinoceros and associated wetland species. Outline one advantage that this in situ approach has over keeping rhinoceroses in captivity. [1]
How to answer it, step by step
- Name the advantage + mechanism
• In situ keeps species in their natural ecosystem — full food webs, natural behaviours, and ecological interactions (grazing, wallowing, seed dispersal) are all maintained.
• Captivity cannot replicate these complex conditions.
Final answer
Award 1 mark for any valid advantage with a mechanism: whole ecosystem supported / natural behaviour retained / larger genetically diverse population / ethically more acceptable / cheaper at scale.
IB-style question — In situ conservation as a climate solution
The Pacific Coast Kelp Sanctuary (PCKS) protects sea otter populations along a 600 km stretch of coastline. Kelp canopy cover is three times higher inside the sanctuary than outside. Outline how protecting sea otters in situ at the PCKS could help reduce atmospheric CO₂ levels. [2]
How to answer it, step by step
- Predator → prey → plant
• More otters → urchin populations controlled → kelp not over-grazed → kelp canopy maintained or increases. - Plant → carbon
• Greater kelp biomass → more photosynthesis → more CO₂ absorbed from the atmosphere.
Final answer
Must show the full linked chain for both marks: otters → herbivore control → kelp maintained → CO₂ removed. 'More kelp absorbs CO₂' without explaining why there is more kelp = 1 mark only.