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♻️ Resource Sustainability

Te Toitūtanga o Ngā Rauemi — Managing Resources for the Future

🌍 Living Within Our Means

Sustainability means using resources in ways that meet our needs today without compromising the ability of future generations to meet their needs.

This is central to both modern environmentalism and traditional Māori concepts of kaitiakitanga.

Types of Resources

♻️ Renewable Resources

Resources that can be replenished naturally:

  • ☀️ Solar energy
  • 💨 Wind
  • 🌲 Forests (if managed well)
  • 🐟 Fish (if not overfished)
  • 💧 Fresh water (in the water cycle)

Key: Can be used sustainably if harvest rate ≤ regeneration rate

⛏️ Non-Renewable Resources

Resources that take millions of years to form:

  • 🛢️ Oil and gas
  • ⬛ Coal
  • 💎 Minerals and metals
  • ☢️ Uranium

Key: Once used, effectively gone forever

🌿 Kaitiakitanga — Māori Environmental Ethics

Traditional Sustainability

Māori developed sophisticated resource management long before the term "sustainability" existed:

  • Rāhui — temporary bans on harvesting to let populations recover
  • Maramataka — lunar calendar for optimal fishing/planting times
  • Tapu — sacred restrictions that protected resources
  • Whakapapa — seeing humans as related to nature, not separate

Kaitiakitanga means guardianship — taking only what is needed and leaving enough for the future.

⚠️ Sustainability Challenges

Tragedy of the Commons

When a resource is shared (like oceans or air), individuals may overuse it because they get the benefit while the cost is shared by everyone. This leads to depletion.

Example: Overfishing — each boat catches as much as possible, leading to fish population collapse.

Solutions

  • Quota systems — limits on how much can be harvested
  • Marine reserves — protected areas where fish can breed
  • Community management — local people managing local resources
  • International agreements — cooperation across borders

🇳🇿 NZ Case Study: Quota Management System

Sustainable Fishing in Action

New Zealand's Quota Management System (QMS) is one of the world's first:

  • Scientists calculate how many fish can be caught sustainably (Total Allowable Catch)
  • This is divided into Individual Transferable Quotas
  • Fishers can only catch their quota
  • Some fish stocks have recovered; others remain at risk
  • Customary rights ensure Māori can harvest kaimoana for traditional purposes

✏️ Activities

Activity: Resource Audit

Choose a resource (water, fish, forests, energy) and investigate:

  1. Is it renewable or non-renewable?
  2. How is it currently managed in NZ?
  3. What are the sustainability challenges?
  4. How could traditional Māori practices help?

My resource study:

👩‍🏫 Teacher Notes

Curriculum Links

  • Science: Planet Earth, Living World — ecosystems
  • Geography: Resource management
  • Economics: Sustainability, externalities
  • Te Ao Māori: Kaitiakitanga