Evironmental resistance Flashcards
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environmental resistance
the factors that stop a population from reproducing at a maximum rate
carrying capacity
the population density that the environment can support
limiting factors are
density Dependant factors such as physical factors and catastrophic factors as well as density dependant factors like competition, predators and disease.
stable population
one that fluctuates around the carrying capacity
How is population size estimated
Direct methods ,indirect methods and mark recapturing
Direct methods consist of…
aerial photographs and helicopters
indirect methods
is the quadrat method
Types of competition
Intraspecific and interspecific
Ecological niche
all the conditions necessary for an organism to survive and reproduce
competitive exclusion
occurs when one of the competing species are more successful
competitive co-existence
when competing species do resource partitioning
How can resources be partitioned
Diffrent time zones ,parts of a habitat or flower
stratification
partition of plants by deviding them into different layers