What is traditional ecological knowledge?
Traditional ecological knowledge (TEK) is what a community knows about its own environment. People learn it over hundreds of years. They watch the weather, plants and animals. They try things and keep what works.
It passes from old to young through stories, songs, festivals, rules and daily work, not mainly through books. Other names for it are indigenous knowledge or local knowledge.
- It is local: it fits one place and its climate.
- It is whole: people, land, water and animals are seen as one system.
- It is living: it changes as conditions change.
Community practices that protect nature
Sacred groves
Patches of forest kept for a local deity or ancestors. Cutting trees there is not allowed. India has many thousands of such groves (for example devrai in Maharashtra and kavu in Kerala). Ghana and other countries have them too. They protect rare plants, springs and animals.
Protecting trees and animals
The Bishnoi community of Rajasthan follows rules that forbid cutting green trees and killing animals. The Chipko movement (1970s, Himalayas) saw villagers, many of them women, hugging trees to stop them being cut.
Saving water
Johads, stepwells (baoli, vav), tanks (eri in Tamil Nadu) and bamboo pipes (in Meghalaya) collect rain and refill the ground.
Farming with nature
Resting a field (fallow), rotating crops and growing mixed crops keep soil healthy. The "Three Sisters" of the Americas (maize, beans, squash) and rice-fish farming of the Apatani people (Arunachal Pradesh) are examples.
Rules for taking
Closed seasons for fishing or hunting, taking only part of a harvest, and leaving young animals keep numbers steady.
Why it matters today
Many places where indigenous peoples live still have rich nature. TEK helps with climate change (early signs of drought), disasters (cool burning to stop big wildfires in Australia), and new medicines and crops.
But the knowledge must be respected. The community should agree before others use it, and should share in any benefit. International agreements such as the Convention on Biological Diversity and its Nagoya Protocol (2010) say this.
Limits and doing a project
Not every old practice is right for today. Some need checking with science, and some groups were left out of decisions in the past. The best approach is both together: local knowledge + science.
Project steps: 1) choose one practice near you; 2) talk to elders and record (with permission); 3) find out what it protects and why it works; 4) check what science says; 5) suggest how it can continue; 6) give credit to the people who shared.
Key formulas and definitions
- Traditional ecological knowledge = local + passed down + tested over time
- Four things guarded: Groves (trees), Water, Soil, Fish/animals
- Good use = respect + consent + shared benefit
- Best results = local knowledge + science
Worked examples
1. A village has a forest patch where no one cuts trees because it belongs to a local deity. Name the practice and one benefit.
It is a sacred grove. Benefit: rare plants and animals survive there, and springs stay clean.
2. Why does resting a field for a year help farmers later?
The soil gets back its nutrients and pests die out. Next year the crop is better without as much fertiliser.
3. A company wants to sell a medicine based on a tribe's plant knowledge. What should happen first?
The company must ask the community for consent and agree to share benefits (money or other help), as international rules on biodiversity say.
Common mistakes
- Thinking traditional knowledge is "unscientific" by default. Much of it is careful observation tested over centuries.
- Thinking all old practices are always right. Some need checking or change.
- Using a community's knowledge without asking or giving credit.
- Thinking it belongs only to India. Communities on every continent have it.