Table of Contents
What is the difference between K and r-selected species?
The r selected species live in populations that are highly variable. The fittest individuals in these environments have many offspring and reproduce early. K selected species live in populations that are at or near equilibrium conditions for long periods of time.
What are the K strategists?
K-selected species, also called K-strategist, species whose populations fluctuate at or near the carrying capacity (K) of the environment in which they reside. K-selected species are characterized by long gestation periods lasting several months, slow maturation (and thus extended parental care), and long life spans.
What do R strategists do?
r-selected species, also called r-strategist, species whose populations are governed by their biotic potential (maximum reproductive capacity, r). Unlike K-selected species, members of this group are capable of reproduction at a relatively young age; however, many offspring die before they reach reproductive age.
What is the difference between AK and R strategist species quizlet?
r-selected species are more common in this environment, along with disturbed communities. K-selected species are more common in this environment. Largest number of individuals of a population that an environment can support. The allocation of energy, time, and other resources to the production and care of offspring.
What animals are K strategists?
Organisms whose life history is subject to K-selection are often referred to as K-strategists or K-selected. Organisms with K-selected traits include large organisms such as elephants, humans, and whales, but also smaller long-lived organisms such as Arctic terns, parrots and eagles.
What kind of species R strategists or K strategists do think would be most sensitive to habitat fragmentation and why?
Apex predators would be most affected because as fragmentation occurs, they lose control of small predators they hunt to survive.
Why are they called R and K strategists?
In the equations describing growth of populations of organisms, r represents the slope of the line representing exponential growth. The letter K represents the carrying capacity of a habitat for members of a given sort of organism.
What animals are r strategists?
Examples of r-strategist species are dogs, cats, insects, and fish.
Would r strategists or K strategists have the advantage in a changing climate?
K-strategists, on the other hand occupy more stable environments. They are larger in size and have longer life expectancies. They are stronger or are better protected and generally are more energy efficient….K and r Reproductive Strategies.
| Characteristics of r- and K-selected organisms | |
|---|---|
| r-organisms | K-organisms |
| small size at birth | large size at birth |
What is the difference between R and K selective 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.
Are snakes R or K strategists?
Humans, elephants, non-human primates, horses, cows and the like are all K-selected species. Members of squamate (large lizards and snakes) and Cricetidae (a rodent family) tend to fall more towards the r-selected side of the scale, therefore, the number of offspring plays a large role in the population size.
Are sea turtles R or K strategists?
For instance, trees have traits such as longevity and strong competitiveness that characterise them as K-strategists. Similarly, reptiles such as sea turtles display both r- and K-traits: although large organisms with long lifespans (should they reach adulthood), they produce large numbers of unnurtured offspring.
What is K strategy?
K-STRATEGY: “K Strategy is a reproductive strategy that involves a high degree or parental investment.”.
What is an are strategist?
An r-strategist is an organism characterized by its unstable environment and its ability to produce a dense population independently. R-strategists are typically small organisms that have early maturity and a short life expectancy.
What is r strategy?
strategies are the K strategy and the r strategy. K strategists are often said to be “K-. selected” and r strategists are said to be “r-selected.”. Biologists often refer to a “spectrum” or continuum that helps us distinguish one organism’s. reproductive strategy from another.