-apparent competition could be generated if one species facilities the enemy of another species
Back
interspecific competition
Front
-competition among individuals of different species
-interspecific competition can cause the population of one species to decline and eventually die out
Back
abiotic conditions
Front
-the ability to compete well may be overwhelmed by the ability to persist in harsh abiotic conditions
Back
predation and herbivory 1
Front
-there are often trade-offs between competitive ability and resistance to predators or herbivores
-the most competitive organisms are often the most susceptible to predation or herbivory
-predators can reverse the outcomes of competiton
Back
competition: related species
Front
-darwin suggested that competition is most intense between related species because they have similar traits and consume similar resources
-for related species that compete strongly, natural selection should favor differences in habitat use
Back
exploitative competiton
Front
-competition in which individuals consume and drive down the abundance or a resource to a point that other individuals can persist
-is considered indirect competition because it occurs through a shared resource
Back
renweable resource
Front
-resources that are consistently regenerated
-ex) seeds, sunlight
renewable resources can originate from inside or outside the ecosystem in which competitors live
-ex)dead leaves fall into streams from the surrounding forest
Back
alleopathy
Front
-a type of interference competition that occurs when organisms use chemicals to harm their competitors
-can be an effective strategy for invasive plants
Back
apparent competiton
Front
-when 2 species have a negative effect on each other through an enemy-- including a predator, parasite, or herbivore
Back
competition: non-related species
Front
-competition can also be intense among distantly related species that consume a common resource
Back
intraspecific competition
Front
-competition among individuals of the same species
-negative density dependence is a common type of intraspecific competition; where an increase in a population's density causes a decline in the growth rate of the population
Back
interference competiton
Front
-when competitors do not immediately consume resources but defend them
-considered direct competiton
Back
leibig's law of the minimum
Front
-law stating that a population increases until the supply of the most limiting resource prevents it from increasing further
-when 2 species compete for a single limiting resource, the species that persists is the one that can drive down the abundance of that resource to the lowest level
Back
aggressive interactions
Front
-an effective from of interference competition
Back
competitive exclusion principle
Front
-two species cannot coexist indefinitely when they are both limited by the same resource
-when two species are limited by the same resource, one species is often a better competitor survives better when resources are scarce
Back
apparent competition 1
Front
-2 species can share a resource and have negative effects on each other through an enemy, such as predator, parasite, or herbivore
Back
predation and herbivory 2
Front
-herbivores can also alter the outcome of competition
Back
resource
Front
-anything an organism consumes or uses that causes an increase in population growth rate when it becomes more available
-ecological factors that cannot be consumed like temp are NOT considered resources
Back
nonrenewable resource
Front
-resources that are not regenerated
-ex) space
-in contrast, competitors can affect the supply of resources and demand for resources that originate within the ecosystem
Back
disturbances
Front
-competitive interactions can also be altered by disturbances