Scelta multipla
Which of the following could be characterized as top-down control in a community?
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51. Community Ecology
Community Structure
Scelta multipla
What is the current view of biological communities?
A
That they eventually reach a state of equilibrium
B
That they maintain a relatively constant composition of species
C
That the effect of disturbances is usually negative
D
None of the listed responses is correct.
E
That disturbance and nonequilibrium are the norm
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Understand that biological communities are groups of interacting species living in the same area. These communities are dynamic and can change over time due to various factors.
Recognize that the traditional view was that communities reach a stable equilibrium, where species composition remains constant over time. However, this view has evolved.
Learn that disturbances, such as natural disasters or human activities, can disrupt communities, leading to changes in species composition and abundance.
Acknowledge that the current view emphasizes that disturbances are common and can have both positive and negative effects on communities, often preventing them from reaching a stable equilibrium.
Conclude that the modern perspective is that biological communities are in a state of nonequilibrium, where change and disturbance are normal and expected parts of ecological dynamics.
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