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Ecology Lesson 16: Competition

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define intraspecific competition define interspecific competition How do these forms of competition effect population growth rate? Makes both species undergo what kind of growth? (competition & resources)

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Date created

Mar 1, 2020

Cards (21)

Section 1

(21 cards)

define intraspecific competition define interspecific competition How do these forms of competition effect population growth rate? Makes both species undergo what kind of growth? (competition & resources)

Front

Intraspecific competition - as population density increases the resources available to any one individual in that population of a single species lessens interspecific competition - when species are "stealing" from each other there are less resources for the focal species. in both forms of competition population growth rate decreases logistic growth

Back

define competitive exclusion (outcomes of competition)

Front

the dominant species prevents the weaker species from getting even necessary species til it goes extinct locally OUT COMPETED

Back

Define Allelopathy what type of competition is this?

Front

The production of chemicals by plants that inhibit the growth of neighbouring plants interference competition in plants

Back

Isocline graphing basics

Front

Back

define competitive coexistence (Outcomes of Competition: Competitive Coexistance)

Front

ability to coexist despite sharing limiting resources (persist indefinitely together)

Back

exploitation competition interference competition (Types of competition)

Front

exploitation competition - organisms consume scarce recources which reduces supply of a shared resource interference competition - One compedetor interferes with the other's ability to access the resource at all

Back

Define fundamental niche define realized niche relation to of these conception to competition

Front

The complete set of resources that define where a species CAN live the restricted set of resources that define where a species DOES live competition is a common element in reducing the realized niche

Back

define amensalism example (Asymmetrical competition)

Front

individuals of one species are harmed, the other species isn't harmed at all small tree growing under much larger tree (light resource)

Back

Define asymmetrical competition (Asymmetrical competition)

Front

When one species is harm by the competition more than the other species is hard, though both are still harmed

Back

define limiting resource relation to competition changes in which resource is limiting

Front

the resource whose supply restricts population growth more than the supply of other resources most intense competition is for the limiting resource change in limiting resource changes competition intensity for that resource

Back

zero population growth isocline (Lotka-Volterra Competition Model)

Front

condition in which the population size of species 1 (or species 2) does not increase or decrease in size for any combination of N1 or N2 that lies on the line (equalibriums?)

Back

define resource partitioning (niche partitioning) (Outcomes of Competition: Competitive Coexistance)

Front

The division of environmental resources by coexisting species such that the niche of each species differs by one or more significant factors from the niches of all coexisting species (each species uses limiting resources differently)

Back

What is the only requirement for competition to occur between closely or distantly related species? (competition and relatedness)

Front

use of the same resources

Back

logistic growth review slide define logistic growth define carrying capacity equation and terms (competition & resources)

Front

see slides for each term definition r = intrinsic rate of population increase per capita N = number of individuals in population K = carrying capacity

Back

define competition

Front

non-trophic interaction between two individuals of two or more species all species are negatively affected by their shared use of a resource that limits their ability to grow, reproduce or survive

Back

Define resources examples of resources

Front

elements of the enviornment required for survival and reproduction food, water, light, space

Back

competitive exclusion principle (Outcomes of Competition: Competitive Coexistance)

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Ecological rule that states that no two species can occupy the same exact niche in the same habitat at the same time due to overlapping requirments for survival that require the same limited resources Two species that use the same limiting resource IN THE SAME WAY cannot coexist indefinitily

Back

define character displacement How does NS drive this concept (Competition & Evolution)

Front

competition causes the phenotypes to become more different over time due to limiting resources. NS favors changes that allow coexistence OR allow one species to out compete the other

Back

Lotka-Volterra Competition Model picture

Front

Back

define interspecific competition

Front

competition between members of different species

Back

define intraspecific competition

Front

competition between members of the same species

Back