- What does R stand for in ecology?
- Are K-selected species opportunists?
- What is r rule?
- Are oak trees K-selected?
- Are turtles R or K-selected?
- Are trees K-selected?
- Are elephants K strategists?
- Are Grizzly Bears K-selected?
- Are Squirrels k-selected?
- Why are endangered species k-selected?
- What animals are K-strategists?
- Are humans K-selected or R selected?
- What does depopulation mean?
- What does community mean in ecology?
- Why are elephants k-selected?
- Are cats K-strategists?
- Are Lions R or K-selected?
- Are dogs K strategists?
- How do R and K selection influence survivorship curves?
What does R stand for in ecology?
The first variable is r (the intrinsic rate of natural increase in population size, density independent) and the second variable is K (the carrying capacity of a population, density dependent)..
Are K-selected species opportunists?
Explanation: R-selected or opportunistic species are species that have high growth rates, produce many offspring, and have low survival odds for those many offspring. … Examples of k-selected species include mammals such as humans, dolphins, and rhinos.
What is r rule?
The R* rule (also called the resource-ratio hypothesis) is a hypothesis in community ecology that attempts to predict which species will become dominant as the result of competition for resources. … A large number of experimental studies have attempted to verify the predictions of the R* rule.
Are oak trees K-selected?
Oak trees produce many offspring that do not receive parental care, but are considered K-selected species based on longevity and late maturation.
Are turtles R or K-selected?
Plants such as dandelions are another good example of an r-selected species. … Sea turtles are a good example of a species that fits somewhere in the middle. The produce many eggs and do not care for their offspring once the eggs have been laid, but turtles live very long lives.
Are trees K-selected?
K-selected species While larger in size when born, the offspring are relatively helpless and immature at birth. … Examples of K-selected species are primates including humans, other mammals such as elephants, and plants such as oak trees.
Are elephants 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. … Elephants are classic examples of K-selected species—that is, species characterized by relatively stable populations.
Are Grizzly Bears K-selected?
The grizzly bear (Ursus arctos ssp.) Elephants and bears though, also take K-selection reproduction very seriously. … Because of the immense dedication mother’s provide for their cubs, many of a bear’s advantageous traits are attributable to this K-selection type reproduction style.
Are Squirrels k-selected?
Tree squirrels are K-selected compared to ground squirrels but rodents are r-selected compared to elephants, etc.
Why are endangered species k-selected?
Endangered species are likely to be K-selected species because they produce fewer offspring and breed less frequently. They also have a later reproductive age and a low population growth rate.
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.
Are humans K-selected or R selected?
Elephants, humans, and bison are all k-selected species. On the other hand, r-selected species often inhabit unstable environments and are completely density independent. These species often have short life expectancies, produce as many offspring as they can, and invest very low amounts of parental care.
What does depopulation mean?
verb (used with object), de·pop·u·lat·ed, de·pop·u·lat·ing. to remove or reduce the population of, as by destruction or expulsion.
What does community mean in ecology?
An ecological community consists of various organisms in an area. From a theoretical systems viewpoint, an ecological community is the aggregate of organisms in groups that eat one another and that are eaten by one another, and it is a trophic structure made up of trophic compartments (food chain and food web).
Why are elephants k-selected?
(a) Elephants are considered K-selected species as they live long, mature late, and provide long-term parental care to few offspring. Oak trees produce many offspring that do not receive parental care, but are considered K-selected species based on longevity and late maturation.
Are cats K-strategists?
Animals such as fish and frogs that lay hundreds of eggs at a time are R-strategists, animals such as humans, puffins and the majority of other organisms are K-strategists. The image shown shows a cat, an example of a organisms that produces few long living organisms.
Are Lions R or K-selected?
Common examples of k-strategists species include humans, lions and whales.
Are dogs K strategists?
Indeed, one can think of a given organism as an “r-strategist” or a “K-strategist” only relative to some other organism; thus statements about r and K selection are invariably comparative. Cats and dogs are r-selected compared to humans, but K-selected compared to mice and rats.
How do R and K selection influence survivorship curves?
How do survivorship curves relate to r selection and K selection in animals. Ans: Populations described as r selection have traits that contribute to a high population growth rate. … K selection maximizes the chance of surviving in an environment where the number of individuals is near the carrying capacity.