Biodiversity and Evolution Flashcards
Pertains to the variety, as well as relative abundance, of species within a region.
-Species Diversity
Pertains to the number and variety of living organisms in an area.
-Biodiversity
Pertains to the variations of genes within species, the differences in the genetic makeup (genotype) between distinct species, or the variability in the genetic makeup of a given species.
-Genetic Diversity
Pertains to the variation among groups of organisms in different physical settings.
-Ecosystem Diversity
One of the pressing issues of our time.
-Biodiversity Loss
Means that the last individual belonging to a particular species is gone forever.
-Extinction
If a species of organisms is lost every 1000 years
-Natural Extinction
Occurs at an approximate rate of 100 species per day. which is 1000 times higher than the natural rate.
-Accelerated Extinction
Natural Causes of Extinction
- Extreme heating and cooling of the Earth
- Changes in Landscape
- Acid Precipitation
- Diseases/Epidemic
- Meteoric Impact/Cosmic Radiation
- Spread of Invasive Species
Man Made Extinction
- Habitat Destruction
- Commercial Hunting/Harvesting and Hunting Sports
- Introduction of Alien, Exotic, or Non native Species
- Pollution caused by Human Activities Can Take Many Forms
- Other Causes
One whose presence and activities strongly affect other species in the community.
-Keystone Species
Importance of Biodiversity
-Ecological, Economic, Ethical, and Aesthetic Perspective
Example of non native species
-The golden kuhol menace
What do you call the lost of a keystone species.
-The domino or ripples effect
What is the most effective way of preserving biodiversity?
-Habitat preservation