Biology, 11.06.2020 16:02 harmony000011

In lab we looked at succession using marine organisms. The process of succession also happens because of wildfires, and those communities do recover and follow the general model of succession. Below is a photo I took one year after a fire at Lake Tahoe. You can see see the burned trees in this photo. What proportion of r-selected species relative to K- selected species should we expect to see at this early stage of recovery?

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Answer from: angelteddy033

The given question is not complete, the complete question is:

In lab we looked at succession using marine organisms. The process of succession also happens because of wildfires, and those communities do recover and follow the general model of succession. Below is a photo I took one year after a fire at Lake Tahoe. You can see see the burned trees in this photo. What proportion of r-selected species relative to K-selected species should we expect to see at this early stage of recovery? a. # of r-selected species > # of K-selected species b. # of r-selected species = # of K-selected species c. # of r-selected species < # of K-selected species. The diagram is given in the attachment below.

The correct answer is option A, that is, the population of r-selected species will be more in comparison to the k-selected species.

Explanation:

Based on the evolutionary strategies, the preferred selection of the species that generate small body sizes, short life span offspring, and exhibit early semelparity and thrive in unstable surroundings is r-selection. These species possess the tendency to overcome the huge loss of offspring and are considered opportunists.

On the other hand, the preferred selection of the species that exhibit delayed reproduction, generate few large body size, possess long life span offspring and iteroparity, and thrive in stable surroundings is k-selection. Thus, it is clear that the r-selected species will be more in number than the species that are k-selected as r-selection plays an essential role in the initial phases of succession.

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