Biodiversity, classification,threat and conservation of biodiversity regarding Community health nursing subject in simple and easy language
Reading File
Finding Sources
Finding Sources
Searching the Web
biodiversity classification threats conservation community health nursing notes
Reading Web Page
https://www.who.int/news-room/fact-sheets/detail/biodiversit…
Finding Sources
I now have enough information to write a thorough, simple, and nursing-focused answer. Here it is:
Biodiversity: Community Health Nursing Notes
Simple and Easy Language
1. What is Biodiversity?
Biodiversity means the variety of all living things on Earth - plants, animals, insects, bacteria, fungi, and all other organisms, along with the environments (ecosystems) they live in.
The word comes from two words: "Bio" = life + "Diversity" = variety.
Simple definition: Biodiversity = all the different forms of life on Earth and the places where they live.
The Convention on Biological Diversity defines it as: "The diversity of life on Earth, including terrestrial and aquatic organisms and the ecosystems they form."
2. Levels of Biodiversity
There are 3 main levels of biodiversity:
| Level | Meaning | Example |
|---|---|---|
| Genetic Diversity | Variety of genes within the same species | Different varieties of rice, or different blood groups in humans |
| Species Diversity | Variety of different species in an area | Tigers, elephants, sparrows, snakes living in one forest |
| Ecosystem Diversity | Variety of different habitats/ecosystems | Forests, wetlands, oceans, grasslands, deserts |
3. Classification of Biodiversity
A. Based on Habitat (Where They Live)
- Terrestrial Biodiversity - found on land (forests, grasslands, deserts)
- Aquatic Biodiversity - found in water (freshwater rivers/lakes; marine/ocean)
- Microbial Biodiversity - microscopic organisms (bacteria, fungi, viruses in soil, water, and gut)
B. Based on Type of Organism
- Flora - all plants (trees, shrubs, herbs, algae)
- Fauna - all animals (mammals, birds, reptiles, insects, fish)
- Microorganisms - bacteria, fungi, viruses, protozoa
- Fungi & others - mushrooms, lichens, mosses
C. Based on Conservation Status (IUCN Red List)
| Status | Meaning |
|---|---|
| Extinct (EX) | No living members remain (e.g., Dodo bird) |
| Extinct in Wild (EW) | Only survives in captivity |
| Critically Endangered (CR) | Extremely high risk of extinction (e.g., Amur leopard) |
| Endangered (EN) | High risk of extinction (e.g., Bengal tiger) |
| Vulnerable (VU) | Faces risk if threats continue (e.g., Polar bear) |
| Near Threatened (NT) | Close to being threatened |
| Least Concern (LC) | Widespread, not threatened (e.g., crow) |
4. Importance of Biodiversity to Human Health
This is especially important in Community Health Nursing because biodiversity directly affects community well-being:
- Clean air and water - forests and wetlands filter air and water, reducing respiratory and waterborne diseases
- Food and nutrition - diverse crops and species ensure food security and adequate micronutrients in diet
- Medicines - over 25% of modern medicines come from plants and animals (e.g., aspirin from willow bark, morphine from poppy)
- Disease regulation - healthy ecosystems control pests and disease vectors (mosquitoes, rodents)
- Mental health - exposure to biodiverse environments reduces stress, anxiety, and improves mental well-being
- Immune regulation - diverse microbial environments (in soil, forests) strengthen the human immune system ("Biodiversity Hypothesis")
- Climate stability - forests absorb over 2.6 billion tonnes of CO2 every year, reducing climate-related diseases
5. Threats to Biodiversity
Major Threats (Remember as "D-H-P-C-I"):
| Threat | Simple Explanation | Health Impact |
|---|---|---|
| Deforestation | Cutting of forests for farming, construction | Loss of medicinal plants; floods; air pollution |
| Habitat destruction | Destroying natural homes of animals | Wildlife-human contact increases disease spread (zoonosis) |
| Pollution | Air, water, soil pollution by industries, vehicles, chemicals | Increases cancer, respiratory diseases, waterborne illnesses |
| Climate Change | Global warming due to greenhouse gases | New disease outbreaks, heat strokes, floods, droughts |
| Invasive Species | Foreign species that harm local ecosystems | Spread of new diseases, destruction of local food sources |
| Overexploitation | Overhunting, overfishing, overuse of resources | Food insecurity, loss of medicinal species |
| Urbanization | Rapid growth of cities | Loss of green spaces; increased pollution; mental health issues |
Key Fact (WHO): About 1 million species are currently at risk of extinction. Species extinctions are happening 10-100 times faster than the natural baseline - mostly because of human activities.
Health Consequences of Biodiversity Loss:
- 35% decline in global wetlands since 1970 → increased waterborne diseases
- Decline in bees → reduced crop pollination → food insecurity and malnutrition
- Deforestation → increased malaria, Ebola, COVID-19 type zoonotic diseases
- Loss of plant diversity → fewer raw materials for new medicines
6. Conservation of Biodiversity
Conservation means protecting and preserving biodiversity so it continues to benefit life on Earth.
Types of Conservation:
A. In-Situ Conservation (Protection in Natural Habitat - "On-site")
Protecting species where they naturally live.
- National Parks - areas where wildlife is fully protected (e.g., Jim Corbett, Ranthambore)
- Wildlife Sanctuaries - protected areas allowing some human activity
- Biosphere Reserves - large protected areas that include surrounding human communities
- Sacred Groves - forests protected by local/tribal communities for religious reasons
B. Ex-Situ Conservation (Protection outside Natural Habitat - "Off-site")
Protecting species by moving them to a controlled environment.
- Zoos - protect endangered animals
- Botanical Gardens - protect rare plants (e.g., National Botanical Research Institute, Lucknow)
- Seed Banks - store seeds of rare and threatened plants (e.g., National Gene Bank, New Delhi)
- Cryopreservation - freezing embryos/sperms/eggs of endangered species
C. Community-Based Conservation
- Local communities protecting their nearby forests, water bodies, and wildlife
- Examples: Van Panchayats (India), community forests, community fishing rules
Important International Agreements:
| Agreement | Purpose |
|---|---|
| Convention on Biological Diversity (CBD, 1992) | International treaty to protect biodiversity |
| CITES | Controls trade of endangered species |
| Ramsar Convention | Protects wetlands globally |
| Kunming-Montreal Global Biodiversity Framework (2022) | Target: protect 30% of land and ocean by 2030 |
7. Role of Community Health Nurse in Biodiversity Conservation
As a community health nurse, you play a key role:
- Health Education - teach community members about how biodiversity affects their health
- Advocacy - support policies that protect green spaces, forests, and clean water
- Disease Prevention - educate about zoonotic diseases linked to deforestation
- Nutrition Counseling - promote diverse, locally grown food for better nutrition
- Environmental Health Assessment - identify environmental risks (polluted water, loss of forest) in the community
- Community Mobilization - involve community in tree planting, waste reduction, and protecting local ecosystems
- Research & Reporting - document health problems linked to environmental degradation
8. Quick Summary (Exam Points)
| Topic | Key Point |
|---|---|
| Definition | Variety of all life forms and ecosystems on Earth |
| 3 Levels | Genetic, Species, Ecosystem |
| Types | Terrestrial, Aquatic, Microbial |
| Main Threats | Deforestation, Pollution, Climate Change, Overexploitation, Urbanization |
| Conservation types | In-situ (national parks) and Ex-situ (zoos, seed banks) |
| Health link | Biodiversity loss → more disease, malnutrition, polluted water |
| Nurse's role | Education, advocacy, disease prevention, community mobilization |
Sources:
- WHO Biodiversity Fact Sheet - key statistics on biodiversity and health
- IUCN Biodiversity and Health - conservation and health connections
- Centring Biodiversity in Nursing - PMC - nursing's role in biodiversity and planetary health
This is a shared conversation. Sign in to Orris to start your own chat.