Recolonization of Mount St. Helens Mount St. Helens is an active volcano located
ID: 82984 • Letter: R
Question
Recolonization of Mount St. Helens Mount St. Helens is an active volcano located in the Cascade Range in southern Washington, USA In the morning of May 18 in 1980, the volcano of the USA with magma and debris from the a The eruption was the and most destructive volcanic event in the history volcano covering vegetation, roads and building within an area of over 600km For ecologists, st Helens presented a unique opportunity to study animal and plant re-colonization of areas affected by the eruption Ecologists have studied the population dynamics of snowshoe hares in the area around Mount St Helens for several decades. Hares did not survive in the area most heavily disturbed by the eruption, but they returned after a few years. The graph below shows how the growth rate (Le.r birth rate death rate) varied with population density. What is the carrying capacity K of the snowshoe hare population? 0,SExplanation / Answer
When a population reaches its carrying capacity (k) then the growth rate (r) becomes 0.
According to the given graph, r = 0 when population density is 100 individuals/ km2
For this reason, carrying capacity (k) = 100 individuals/km2
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