introduction to scienceskirbst.org/23-biodiversity.pdf2. changing communities 3. intentional killing...
TRANSCRIPT
Biodiversity
Mr. Skirbst
3 Types of Diversity
1. Taxonomic (Species) Diversity
variety in numbers of species
3 Types of Diversity
1. Taxonomic Diversity
2. Ecological Diversity
Variety in number of ecosystems
3 Types of Diversity
1. Taxonomic Diversity
2. Ecological Diversity
3. Morphological (genetic) Diversity
Variety within a species (genetically)
Biodiversity dependent on:
Temperature, precipitation, altitude, soil, geography, other species
Biodiversity dependent on:
Temperature, precipitation, altitude, soil, geography, other species
Biodiversity highest in warm, moist, equatorial regions with fertile soil
Importance of Biodiversity:
1. Genetic diversity
Importance of Biodiversity:
1. Genetic diversity
- Variability in DNA
Importance of Biodiversity:
1. Genetic diversity
- Variability in DNA
- Promotes survival (w/ “back-ups”)
Importance of Biodiversity:
1. Genetic diversity
- Variability in DNA
- Promotes survival (w/ “back-ups”)
- One species goes, another takes place
Importance of Biodiversity:
1. Genetic diversity
2. Global stability
Importance of Biodiversity:
1. Genetic diversity
2. Global stability
- “Web of life” supports stability
Importance of Biodiversity:
1. Genetic diversity
2. Global stability
- “Web of life” supports stability
- Missing links = instability
Importance of Biodiversity:
1. Genetic diversity
2. Global stability
3. Human benefits
Importance of Biodiversity:
1. Genetic diversity
2. Global stability
3. Human benefits
- Scientific value (info., medicine)
Importance of Biodiversity:
1. Genetic diversity
2. Global stability
3. Human benefits
- Scientific value (information, medicine)
- Economic value (products, chemicals)
Threats to Biodiversity:
1. Habitat destruction
- deforestation, desertification, wetland destruction
Threats to Biodiversity:
1. Habitat destruction
2. Changing communities
- Exotic plant or animal species (taking over habitat or resources or
killing others)
Threats to Biodiversity:
1. Habitat destruction
2. Changing communities
3. Intentional killing
- Poaching (illegal hunting of protected species)
Threats to Biodiversity:
1. Habitat destruction
2. Changing communities
3. Intentional killing
4. Accidental killing
- Unintentional (traffic patterns, isolation)
Web of Life