Biodiversity
The variety of life across all levels of biological organization.
Biodiversity
A measure of biodiversity that considers relative abundance and species counts. (hint: our lab)
What is the Shannon Wiener Diversity Index?
The complete loss of a species when the last individual dies
Extinction
A theory that explains species richness on islands as a balance between immigration and extinction.
Island Biogeography Theory
Considered the most diverse group of organisms
Insects
The number of species in a given area
Species Richness
Regions that share temperature and rainfall patterns.
Biomes
It refers to the current accelerated extinction rate driven by human activities, posing a severe threat to global biodiversity
Sixth Mass Extinction
They can outcompete native species and disrupt ecological balance
Invasive Species
Species whose protection helps conserve other species in their habitat
Umbrella Species
Differences in DNA among individuals in a population
Genetic Diversity
A species with a large impact on its ecosystem, often at the top of the food chain.
Keystone Species
Name the three types of survivorship curves
(Daily Double: Can you draw the curves for double?)
Type I (late loss), Type II (constant loss), Type III (early loss).
The clearing of forests faster than they can regrow
Deforestation
What is the difference between a food chain and a food web?
A food chain shows energy flow in a single line; a food web shows complex interlinking of chains.
Name two benefits of biodiversity
Potential new food sources, genetic diversity, medicine, ecosystem services
Name one ecosystem service provided by biodiversity
Air and water purification, waste decomposition, climate stabilization, etc.
How many mass extinction events has Earth experienced before the current one?
Five
Illegal killing of wildlife for meat or body parts
Poaching
What is the primary factor that controls carrying capacity?
Limiting factors like food, mates, temperature, and space.
The increase in species richness as one moves toward the equator
Latitudinal Gradient
The First US National Park
Yellowstone National Park
Loss of a species from one area, but not globally extinct
Extirpation
What does the term ‘HIPPCO’ stand for?
Habitat destruction, Invasive species, Pollution, Population growth, Climate change, Overexploitation
Describe K-selected species (3 characteristics required)
Species limited by carrying capacity, larger, long-lived, produce fewer offspring, better parental care.