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R- Selected species have high population densities while k-selected species have lower population densities
Those are reproductive strategies that identify certain species. R-selected are those that reproduce rapidly and produce a lot of progeny; bacteria are an example. K-selected are those that reproduce very slowly and are slow to mature; humans are a k-selected species. Population density is the number of organisms per unit area. Some organisms don' t like to be crowded, so the density can affect the population size. Also, some limiting factors are density-dependent, like food or living space.
K-selected
Those are reproductive strategies that identify certain species. R-selected are those that reproduce rapidly and produce a lot of progeny; bacteria are an example. K-selected are those that reproduce very slowly and are slow to mature; humans are a k-selected species. Population density is the number of organisms per unit area. Some organisms don' t like to be crowded, so the density can affect the population size. Also, some limiting factors are density-dependent, like food or living space.
K-selected species are present in environments that are predictable and where resources aren't necessarily fought over. A k-selected species will produce less frequently and with few children than an R (or S) selected species. It's the concept of quality over quantity. K-selected species are typically bigger, take longer to reach maturity, and live longer.
1. What is the difference between r-selected and k-selected organism? Which strategy would you expect to be more prevalent in unpredictable environments (high stochastic variation in conditions)?
the same as the difference between ct and k
k selected
K selected
K-strategists (also called K-selected species) are species whose populations hover at the carrying capacity of their environment. K-strategists are apt to live in areas with relatively stable biological communities such as climax forests.
There is no difference. When used in a hallmark, "k" is usual as in 14k.
The typical characteristics of k-selected species are: slower development delayed reproduction larger body size longer life poor dispersal equilibrium species 's' shaped growth curve This is compared to the typical characteristecs of r-selected species: rapid development rapid reproduction short lived numerous offspring pioneer species exponential growth with population crashes Hope this helped :)