What is a measure of how much a disturbance can affect the flow of energy and matter in an ecosystem?

Resistance- A measure of how much a disturbance can affect its flows of energy and matter. Resilience- The rate at which an ecosystem returns to its original state after a disturbance.

How does the mix of species found in ecosystems vary with their frequency of disturbance Why?

How does the mix of species found in ecosystems vary with their frequency of disturbance? … The IDH states that ecosystems experiencing intermediate levels of disturbance will favor a higher diversity of species than those with high and low disturbances.

What is an ecosystem that rapidly returns to its original state after a disturbance?

APES Chapter 3 Vocab Review

A B
environmental resistance a measure of how much a disturbance can affect an ecosystem (usually in terms of energy flow)
resilience the rate at which an ecosystem returns to its original state after a disturbance. Highly resilient = returns to original state rapidly
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What types of disturbances can pose a threat to humanity?

Earthquakes, various types of volcanic eruptions, tsunami, firestorms, impact events, climate change, and the devastating effects of human impact on the environment (anthropogenic disturbances) such as clearcutting, forest clearing and the introduction of invasive species can be considered major disturbances.

How can levels of disturbance affect an ecosystem quizlet?

experiencing intermediate levels of disturbance will favor higher diversity of species than those with high or low disturbance levels. … Some species might not withstand disturbance so original diversity is reduced.

How does disturbance affect the environment?

Although disturbances tend to negatively affect populations of resident plants, animals, and other organisms in a given ecosystem, they provide some fugitive species with opportunities to move into and gain footholds in ecosystems whose biological communities once excluded them.

What are the features measuring degree of disturbance?

The ecological impact of a disturbance is dependent on its intensity and frequency, on the spatial distribution (or the spatial pattern) and size of the disturbed patches, and on the scale (the spatial extent) of the disturbance.

How is ecosystem disturbed?

Many ecosystems are influenced by disturbances such as e.g. land-use, fragmentation, fire, floods or storms. … In particular the interaction of different disturbances and between disturbances and other stress factors (such as habitat loss, pollution or temperature change) is not yet well understood and studied.

How does disturbance affect biodiversity?

Disturbance Affects Species Diversity. (A) Species diversity is low at low disturbance frequency because of competitive exclusion. … At high disturbance frequency, species diversity is predicted to be low, because only “weedy” species that quickly colonize and reach maturity are able to survive.

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What caused the disturbance of the ecosystem in this example of primary succession?

Examples of disturbances that cause primary succession include retreating glaciers, volcanic eruption and the erosion of sand dunes. Human activity can also be a cause of primary succession, such as the creation of a paved surface. These types of disturbances leave bare rock exposed or otherwise accessible.

How does disturbance promote biodiversity?

At the scale of a particular patch, a disturbance event modifies the environment and affects fine-scale, demographic processes (e.g., recruitment, growth, survivorship) of constituent species, leading to changes in biodiversity (i.e., the relative abundances of species).

Are disturbances beneficial or harmful to the ecosystem?

Sometimes disturbances to ecosystems are caused by humans, but other times they occur naturally. Sometimes disturbances benefit ecosystems, but other times they are harmful. … An ecosystem that goes through a disturbance is usually able to “fix itself” over time. This process is called a recovery.

How is human impact different from natural disturbances?

A natural disturbance is simply a disturbance with a natural cause, such as a fire or flood. … A human disturbance is caused by people. Different types of pollution, urbanization, deforestation, and mining are all examples of human disturbances. Human disturbances can have a significant impact on an ecosystem.

Which is a measure of how much a disturbance can affect flows?

Resistance- A measure of how much a disturbance can affect its flows of energy and matter. Resilience- The rate at which an ecosystem returns to its original state after a disturbance.

What level of disturbance most often results in the highest species richness?

The intermediate disturbance hypothesis (IDH) suggests that local species diversity is maximized when ecological disturbance is neither too rare nor too frequent. At low levels of disturbance, more competitive organisms will push subordinate species to extinction and dominate the ecosystem.

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Why do intermediate levels of disturbance result in greater community diversity?

According to IDH theory, at intermediate levels of disturbance, diversity is thus maximized because species that thrive at both early and late successional stages can coexist. … Second, interspecific competition results from one species driving a competitor to extinction and becoming dominant in the ecosystem.