Are Turtles R Or K-Selected?

What are r 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..

Are humans k-selected?

Elephants, humans, and bison are all k-selected species. … These species often have short life expectancies, produce as many offspring as they can, and invest very low amounts of parental care. R-selected species can include mosquitos, mice, and bacteria.

Are frogs K strategists?

Frogs produce many eggs, and a fraction live to reproduce themselves. They are an example of r-strategists. “r and K selection.” University of Miami: Department of Biology.

Are dogs K or R 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.

Are oak trees R or K strategists?

This oak tree near my house is classified as a k-strategist because of it’s species survival strategies. The oak tree, like other k-strategists, develop in stable environments where their species population remains at stable numbers.

Are sea turtles R or K strategists?

Green Sea Turtles are both r and k strategists. They are k strategists because they live for a really long time and they are r strategists because they have a ton of babies then don’t stick around to take care of them.

What are examples of K-selected species?

Examples of K-selected species include birds, larger mammals (such as elephants, horses, and primates), and larger plants.

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 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.

Are Squirrels K-selected or R-selected?

Tree squirrels are K-selected compared to ground squirrels but rodents are r-selected compared to elephants, etc.

Are Lions K-selected?

Common examples of k-strategists species include humans, lions and whales.

Are Plants R or K strategists?

Even plants are capable of r- and K-selected reproductive strategies. Wind pollinated species produce much more pollin that insect pollinated ones, for example, because the pollin has to be carried at random by the wind to a receptive female flower. Eggs too, can be r- or K-selected.

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 turtles K-selected?

It’s also important to note that not all K-selected species will have all the traits. Sea turtles, for example, have long lifespans and slow development but produce and abandon many offspring, of which few survive. In general, if a species demonstrates most of the traits, it can be classified as K-selected.

Are dandelions r-selected species?

Dandelions are particularly good examples of R-selected traits because they have several of the physical characteristics associated with R-selected traits including: rapid development, small size, and short lifespan.

What is a slow life history pattern?

what are 3 characteristics of slow life history. reproduce slowly, few offspring, long gestation period, mature slowly, long lives, maintain population, population size at or near carry capacity.