module 5.2 Flashcards
what is the lotka-volterra model?
where are black bears and grizzly bears found in north america?
-grizzly bears: open tundras, will defend territory and displace black bears
-black bears: boreal forests where berries are abundant (better competitors for berries)
what does the logistic growth model look like?
what is the lotka model for bears?
what is the updated lotka-volterra model?
what does K/a represent?
what are the arrows of model?
what does K/B represent?
what does the graph look like when species 1 is the superior competitor?
what is the ghost of competition past?
-the idea that past competition between two or more species may have altered resource use and interactions sufficiently that the species no longer compete
-the only lingering signs of their previous competition are non-overlapping but similar resource use
what is the graph of exclusion in fish?
what did joseph connell discover?
what is character displacement (evolution)?
involves a shift in feeding niche that subsequently affects a species’ morphology, behavior or physiology
what are character displacement example of tadpole?
what are beak differences in finches?
what are beak differences graph?
what is resource partitioning?
-competition may intensify if species use the same portion (niche overlap) of resource space (ex: habitat, food, or light)
-competition may be reduced if the common resource is partitioned over time in microspace
