What is the difference between R and K species?

What is the difference between R and K species?

r is for reproduction. Such a species puts only a small investment of resources into each offspring, but produces many such low effort babies. K refers to the carrying capacity, and means that the babies are entering a competitive world, in a population at or near its carrying capacity.

What is the difference between R and K strategists?

The key difference between r strategist and K strategist is that the r strategist lives in unstable and unpredictable environments while the K strategist lives in more stable environment. Because of this environmental conditions, the r strategists produce many offspring while the K strategists produce few offsprings.

What is meant by R selected or K selected species?

r-selected species, also called r-strategist, species whose populations are governed by their biotic potential (maximum reproductive capacity, r). Wilson; K-selected species—that is, species whose population sizes fluctuate at or near their carrying capacity (K)—make up the second strategy.

What is a K selected species?

K-selected species possess relatively stable populations fluctuating near the carrying capacity of the environment. These species are characterized by having only a few offspring but investing high amounts of parental care. Elephants, humans, and bison are all k-selected species.

What is the difference between R and K-selected species quizlet?

1 Know that species with high reproductive effort, short life, and many offspring are more common in early succession or disturbed communities (r-selected). 2 Know that species with low reproductive effort, long life, and few offspring are more common in stable communities (K-selected).

What is the difference between R and K selection quizlet?

K selection has a low number of offspring and a long life span; R selection has a higher number of offspring and short life span.

What are the characteristics of K-selected species?

K-selected species are characterized by long gestation periods lasting several months, slow maturation (and thus extended parental care), and long life spans. In addition, they tend to inhabit relatively stable biological communities, such as late-successional or climax forests (see ecological succession).

What are the features of r-selected species?

These characteristics describe R-selected species perfectly:

  • Rapid development.
  • High reproductive rate.
  • Early reproductive age.
  • Small body size.
  • One reproductive cycle.
  • Short lifespan.
  • Poor competitive ability.
  • High mortality of offspring.

What is an R species?

r-selected species are those that emphasize high growth rates, typically exploit less-crowded ecological niches, and produce many offspring, each of which has a relatively low probability of surviving to adulthood (i.e., high r, low K). A typical r species is the dandelion (genus Taraxacum).

What are some r-selected species?

Typical examples of r-species are mice, rabbits, weeds and bacteria, which have a lot of offspring, but a short life expectancy. In summary, r-selection is selection for quantity, K-selection for quality of offspring.

What are examples of r-selected species?

Examples of r-selected species are marine invertebrates, such as jellyfish, and plants, such as the dandelion. Dandelions have small seeds that are dispersed long distances by wind; many seeds are produced simultaneously to ensure that at least some of them reach a hospitable environment.

What are the features of R selected species?

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