Chapter 5: Species Flashcards
(37 cards)
Resource Partitioning
When species divide shared resources by specializing in different ways(ex. one species is active in the daytime, another in the night)
Character Displacement
When species evolve physical characteristics that reflect their reliance on a resource they use(ex. bird that eat larger seeds adapt to have larger bills)
Competition
When multiple organisms seek the same limited resource
Amensalism
A type of competition where one species is harmed and another is unaffected
Competitive exclusion
When a species is a very effective competitor, so much so that they exclude other species from obtaining a certain resource
Symbiosis
Mutualism in which organisms live in close physical contact(plants and fungi)
Allelopathy
Plants release harmful chemicals
Fundamental Niche
The full niche of a species
Niche
ecological role
Realized Niche
An individual only part of its role because of the competition of other species
Coevolution
When a parasite and hosts evolve in response to one another
Commensalism
A relationship when one species benefits, and the other species is unaffected
Facilitations
Plants that create shade allowing seedlings to grow
Mutualism
A relationship in which two or more species benefit from each other
Trophic levels
Ranks in the feeding hierarchy
What is the first trophic level?
Producers
Energy inefficiency
The energy lost as you go higher up the food chain
Stromatolites
layered mounds, columns, and sheet-like sedimentary rocks in shallow water.
Succession
region undergoes a predictable series of change after a disturbance
Primary succession
Follows disturbance so severe that no vegetation or plant life remains, (clean slate) (glaciers, lava)
Secondary succession
begins when a disturbance dramatically alters
an existing community but does not destroy all living
things (fires, hurricanes)
Detritivores/decomposers
Organisms that consume only non-living organic matter
Pioneer species
The first species to arrive in a primary succession areaq
Lichens
mutualistic aggregates of fungi and algae; pioneers best suited to colonizing bare rock