PPt.8: Community Ecology Unit 1 Flashcards
Close ecological relationship with other species, ex. an organism living in or on another organism
Symbiosis
(+)
Beneficial for one organism
(-)
Detrimental to one organism
0
Neutral
(-,-)
Competition
(+,-)
Parasitism/Predation
(+,+)
Mutualism
(+,0)
Commensalism
Within members of the same species
Intraspecific Competition
Members of different species
Interspecific Competition
Involves direct interaction between competitors such that the action of one species inhibits the other species
Interference Competition
Involves more indirect inhibitory effects
Resource exploitation competition
Describes all of the factors that determine where it can live and successfully replace itself
Ecological Niche
Temperature and humidity are
Abiotic factors
Organism’s competitors are
Biotic factors
Consists of the entire set of conditions under which an organism can persist
Fundamental Niche
Actual set of conditions under which the organism lives
Realized Niche
Organisms living in the same habitat may utilize different resources
Resource Partitioning
The potential competitors feed at different times
Temporal Separation
Community is organized around it
Keystone Predator
Tough seed coats or spines
Structural Defense
only released when plant cells are broken or injured
Toxic alkaloid compounds
Stinging cells or irritating substances that can be sprayed into the face of an attacker
Chemical Defenses
Barbed quills, spines or body armor
Mechanical Defense
Concealment, hiding by not being seen
Crypsis
Warning colors
Aposematic colors
When revealed, confuse, startle or frighten a potential predator
Startle coloration
Photosynthetic algae that help coral animals deposit the calcium carbonate necessary to form their skeletons
Zooxanthellae
