Ecological Stability in Environmental Science

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16 Questions

According to Lewontin (1969), when is a system considered to be globally stable?

When it is able to return following any degree of disturbance

What term has often been used in reference to the response of an ecosystem to a disturbance?

Resistance

What have ecologists separated into two aspects in the response of ecosystems to disturbance?

Resistance and recovery

What has been called 'inertia' by some ecologists in relation to the response of ecosystems to disturbance?

The ability of a system to resist displacement from its initial state

What term has frequently been used in reference to the response of an ecosystem to a disturbance by various ecologists?

Stability

According to Cairns and Dickson (1977), what term has been applied to the ability of a system to resist displacement from its initial state?

Inertia

What is the term used to describe the ability of a system to absorb small disturbances and prevent amplification?

Resistance

Which term refers to the ability of a system to return to its original state after a disturbance?

Resilience

What term is used to describe the amount of disturbance a system can absorb without flipping to an alternative state?

Robustness

According to the text, what is the magnitude of change referred to as?

Response

What is the extent of return to the original state called?

Recovery

According to the text, what type of disturbances do not produce a change in the system?

Type I

In the context of disturbances, what type are those that produce a permanent alteration in the system?

Type III

"Recent reviews of stability emphasize that proper scales of time and space are critical to an evaluation of ecosystem responses to disturbance." What aspect of measurement does this statement emphasize?

Temporal and spatial scales

"Traditionally disturbances have been considered as infrequent events that disrupt the equilibrium state of an ecosystem by producing abrupt changes in structural or functional characteristics." Which term reflects this concept?

"Disturbance"

"The concept of resistance implies that systems may not change when exposed to some disturbances." What term is associated with this concept?

"Resistance"

Test your knowledge about ecological stability in the context of environmental science. Explore the concept of stability in ecological systems and its significance. This quiz is based on lecture 5 by Dr. Mohamed A. Elsayad, PhD., from AAST University's Faculty of Engineering.

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