Ecosystem Ecology
the total area on earth where living hings are found
What is the Biosphere?
all of the populations that live and interact in the same geographic area
What is a community?
The two main types of population growth.
What is exponential and logistical growth?
What are genetic, species, and ecological?
changes in the gene frequencies within a population from one generation to the next.
What is evolution?
All the living and non living components interacting in a given area.
what is a ecosystem?
measured in terms of the number of different species richness and the species evenness
What is Species diversity?
The population size that the environment can sustain at any given time
What is carrying capacity?
What is biodiversity?
Traits that the environment favors.
What is adaptation?
terrestrial, marine, and freshwater are all types of___
What are biomes?
The role a species plays in it's community.
What is a niche?
Type of species with a short life and little to no parental care
What is a R-selected species?
What is habitat destruction and fragmentation?
The process by which organisms best adapted to the environment survive to pass on their traits.
What is natural selection?
Earth is a closed system for____.
What is matter?
a species that impacts its community more than its mere abundance would predict, often altering ecosystem structure
What is a keystone species?
the ability of a predator to control it's prey populations
What is top-down regulation?
areas that have high endemism.
What are biodiversity hot spots?
The type of selection that favors an extreme of a trait
What is directional selection?
The process of converting atmospheric nitrogen (N2) into amonia (NH3).
What is nitrogen fixation?
As one moves up the food chain, ____and _____ decrease, creating a trophic pyramid
What is energy and biomass?
removal or addition of a top predator causing complete disruption of the food chain.
what is a trophic cascade?
Leading cause of habitat destruction
What is land clearing for agriculture?
Locally extinct in one geographic area, but still found elsewhere.
What is extirpation?