What are r-selected species quizlet?
r-Selected Species. Early reproductive age. r-Selected Species. Most offspring will die before they reach the reproductive age.
What is an R selection species?
r-selected species, also called r-strategist, species whose populations are governed by their biotic potential (maximum reproductive capacity, r). Such species make up one of the two generalized life-history strategies posited by American ecologist Robert MacArthur and American biologist Edward O.
What is an example of an 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 characteristics are common to 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 characteristics are common to r-selected species quizlet?
Terms in this set (18)
- small body size.
- short lived.
- reproduce rapidly with usually many offspring.
- very little parental care.
- able to disperse rapidly and colonise new habitats.
- population size very variable.
- low competitive ability – unlikely to become dominant.
What is the difference between R vs K selection quizlet?
What is the difference between R vs. K selection? 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 does R stand for in r-selected species?
reproduction
r-selection: On one extreme are the species that are highly r-selected. r is for reproduction. Such a species puts only a small investment of resources into each offspring, but produces many such low effort babies. Such species are also generally not very invested in protecting or rearing these young.
Why are r-selected species invasive?
R-selected species often grow quickly and mature rapidly. Combined with their explosive reproductive potential, their quick growth and maturation allow them to colonize disturbed and early successional habitats remarkably well. This is not to suggest that all r-selected species are invasive.
Do r-selected species have many offspring?
A whale tends for a single calf. r-selection: On one extreme are the species that are highly r-selected. r is for reproduction. Such a species puts only a small investment of resources into each offspring, but produces many such low effort babies….r- and K-selection.
| Characteristic | r | K |
|---|---|---|
| Early mortality | high | low |
What is an example of an R strategist?
Examples of r-strategist species are dogs, cats, insects, and fish.
What characteristics are common to r selected species quizlet?
Do r selected species have many offspring?