test 4 lec 3 Flashcards
what is ecology?
the study of interactions of organisms with their environment and with other organisms.
interactions with other organsims are what?
biotic factors
interactions with their environment are what?
abiotic factors
the equation for population growth is …
individuals added-individuals removed
the equation for logistic growth is
individuals in the population in the previous generation +the individuals added to the population
larger islands mean what?
lower extinction and higher immigration
a smaller island means what?
low immigratiuon and high extinction
what are source sink dynamics?
some patches may b etoo small to sustaina populaiton on their own but survive because of migration
what is a fundamental niche?
the full range of space, resources, and climate conditions taht species could use or tolerate with no limiting factors
what is a realized niche?
the actual space and resources a species uses with some limitation.
what is lichen?
a symbiotic relationship of fungus and either photosynthetic bacteria or algae
What is succession?
the process of a species replacing each other over time in a given area
what is PRIMARY succession?
succession on a barren rock
what is SECONDARY succession?
succession when there were species already there
