Curso EXANI II 2025 Biología Biodiversidad #11
Introduction to Biodiversity
Overview of Biodiversity
- The course focuses on biodiversity, a crucial area in biology, introducing its significance and foundational concepts.
- Biodiversity encompasses the variety of life forms within an ecosystem, including animals, plants, and microorganisms essential for ecological balance.
Levels of Biodiversity
- Three levels of biodiversity are identified: genetic diversity, species diversity, and ecosystem diversity.
- Genetic diversity refers to the variety of genes within species.
- Species diversity includes different species and variations among them.
- Ecosystem diversity covers various habitats and ecological processes.
Examples of Biodiversity
Genetic Diversity
- An example is the genetic variation among cat breeds like Siamese, Persian, and Bengal, each with unique traits.
Species Diversity
- Coral reefs illustrate species diversity with numerous fish types cohabiting in one habitat (e.g., clownfish, angelfish).
Ecosystem Diversity
- The Amazon rainforest exemplifies ecosystem diversity with its rich array of habitats such as tropical forests and rivers supporting diverse wildlife.
Importance of Biodiversity
Benefits of Conservation
- Conserving biodiversity provides essential services like clean water supply, flood protection, stable climate conditions.
Consequences of Loss
- Loss of biodiversity disrupts biogeochemical cycles (carbon/nitrogen/phosphorus), affecting soil quality and environmental health.
- It can lead to decreased food quality/quantity due to reliance on specific plant/animal species for agriculture.
Impact on Human Health and Ecosystems
Health Risks
- Reduced biodiversity increases risks for infectious diseases by disrupting natural controls over disease vectors.
Economic Implications