ecology Flashcards
study of interaction among organisms and their physical environment.
ecology
A group of organism that interbreed and live at the same place
that’s what we call a population
the difference between population and species
species are reprodutively isolated from other such groups.
interaction between community and its physical environment.
we call that an ecosystem
there are three types of distribution of a population.
random
regular
clumped
there are 4 factors that affect growth
birth, death, immigration, emigration
r related species characteristics
shows rapid growth rate
- produces a lot of offsprings
- mature early
- not a lot of energy to reproduce
- small mfs
type III
k selected species
shows gradual growth
contrary to r related species
more parental investment, large mfs
have time to adapt and close to k-line
an organism’s role and place in an ecosystem
that’s call a niche
two things to look at when you study ecosystem
the flow of energy and the flow of nutrients
the primary producer for aquatic are
Phytoplankton
the primary consumer for aquatic
zooplankton
the increase of pollutant (like DDT) in an organism is called
bioaccumulation
the increase of pollutant in the food chain is called
biomagnification
three types of consumers
Herbivores, parasites and predators
