Multiple Choice
Which of the following best explains the importance of decomposers in a food web and their relationship to quaternary consumers?
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48. Ecology
Introduction to Ecology
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Which term best describes a major disturbance that causes an ecosystem to stabilize at a new equilibrium?
A
Carrying capacity
B
Climax community
C
Ecological succession
D
Regime shift
Verified step by step guidance1
Understand the concept of 'regime shift': A regime shift refers to a major disturbance or change in an ecosystem that leads to the establishment of a new equilibrium state, often involving significant alterations in species composition, structure, or function.
Compare the term 'regime shift' with other options: Carrying capacity refers to the maximum population size an environment can sustain, climax community describes the stable endpoint of ecological succession, and ecological succession is the process of gradual change in ecosystems over time. None of these terms describe a major disturbance leading to a new equilibrium.
Recognize that 'regime shift' specifically addresses the idea of a major disturbance causing an ecosystem to stabilize at a new equilibrium, making it the most appropriate term for this scenario.
Consider examples of regime shifts: For instance, the transition of a forest ecosystem to a grassland due to prolonged drought or human activity, which results in a new stable state.
Conclude that the correct term for the described phenomenon is 'regime shift,' as it directly relates to the concept of a major disturbance leading to a new equilibrium in an ecosystem.
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