Ecology
What happens if the population grows beyond carrying capacity
"die back" often follows overshoot
which animal is most likely to have a type 2 survivorship curve
bird
The variety of life on Earth in all its levels, from genes to ecosystems, and the processes that sustain it.
What is biodiversity
What is an abiotic factor? Give 5 examples
nonliving - air, water, sun, nutrients, rocks
Related species receiving different traits due to selective pressures
divergent evolution
3 adaptations of predators that make catching easier
Claws, flexible bodies, large size
What is a generalist and give three examples
species that can thrive in a wide range of habitats and consume a variety of food sources, meaning they are not specialized to a specific enviroment
What was the biggest success of CITES?
Outlawing ivory trade as a way to save endangered elephants
specialists, migrate, need large territories, hunted,
What factors influence the general size of a given population
Births, deaths, immigration, emmigration
what occurs when 2 species want the same resource
Competition / resource partitioning
When one organism is positively affected, and the other is unaffected
What is commensalism?
Biggest human-cause of extinction
Habitat loss / destruction
A species with an exceptionally important role in the functioning of a community or ecosystem
keystone species
Why is genetic diversity important?
1. It increases the chances of species being able to adapt and survive in changing environments by improving a species’ ability to resist diseases, pests, changes in climates, and other stresses. 2. It promotes variation and adaptation within a population. 3. It is important for survival, adaptation, and evolution.
two relations between two organisms which affect one positively and the other negatively
Parasitism and predation
three qualities of the r-type species
high reproductive, generalists, smaller, type III survivorship
What is habitat fragmentation
When portions of land or habitat are degraded or destroyed, changing use for humans
First species that grow on bare rock (name and term)
Lichen and mosses/ pioneer species
WHat is a threatened species?
Likely to become endangered
What is commensalism?
When one organism is positively affected, and the other is unaffected
Type of species that has low reproductive rate, specialists, large
K-strategist
Acronym for human threats to biodiversity
HIPPCO
What is a community?
A group of interacting organisms sharing an environment. Examples: Dogs, cats, rabbits, peopleRespiration and transpiration
2 biomes with lowest rainfall
tundra, desert