what is a likely outcome of a moderate disturbance, such as a severe thunderstorm?


Why do moderate levels of disturbance result in an increase in community diversity?

Why do moderate levels of disturbance result in an increase in community diversity? … Competitively dominant species infrequently exclude less competitive species after a moderate disturbance.

Which of the following is the best description of the effect of a keystone species?

Which statement is an accurate description of a keystone species? A keystone species that is a predator controls the herbivore populations, which in turn maintains the plant populations and keeps balance.

What is the main advantage of controlled burnings of forested areas controlled burnings ____?

Controlled burns are lit for a number of reasons. By ridding a forest of dead leaves, tree limbs, and other debris, a prescribed burn can help prevent a destructive wildfire. Controlled burns can also reduce insect populations and destroy invasive plants.

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What type of populations would be most likely to show resource partitioning?

sympatric populations of species with similar ecological niches.

What is intermediate disturbance hypothesis in biology?

The intermediate disturbance hypothesis predicts that the highest diversity will occur at levels of moderate disturbance. We measured the species diversity, abundance, and species diversity of bacteria on the human body in relation to disturbance by washing.

Why is intermediate disturbance hypothesis important?

The “intermediate disturbance hypothesis” (IDH; Connell, 1978) predicts that maximum levels of biodiversity should be observed under some intermediate disturbance frequency because few species are able to tolerate very intense disturbance regimes, and few are able to compete successfully in habitats that experience …

Which of the following is the broadest level of ecological organization?

The broadest, most inclusive level of organization is the biosphere, the volume of Earth and its atmosphere that supports life.

What is most likely to result immediately after a rain forest in Brazil is clear cut?

What is most likely to result immediately after a rainforest in Brazil is clear-cut? The number of rhinoceroses has decreased to near extinction.

What happens when keystone species are removed?

Without its keystone species, the ecosystem would be dramatically different or cease to exist altogether. Keystone species have low functional redundancy. This means that if the species were to disappear from the ecosystem, no other species would be able to fill its ecological niche.

What conclusion can you draw from the accompanying figure mussels?

What conclusion can you draw from the accompanying figure? Without direct contact, mussels can sense the presence of crabs.

What are some possible consequences of preventing prescribed burns and natural wildfires quizlet?

What is a likely consequence of preventing prescribed burns to forest ecosystems? Natural wildfires will burn longer and hotter when they occur because there is more underbrush and fuel available. Without wildfires, forest ecosystems would be more likely to suffer from outbreaks of plant disease.

What do controlled burns do?

Hazard reduction burning, also known as prescribed or controlled burning, is primarily used to prevent the spread of bushfires by reducing the build-up of flammable fuel loads such as leaf litter, grasses and shrubs.

What is resource partitioning?

Lesson Summary. When species divide a niche to avoid competition for resources, it is called resource partitioning. Sometimes the competition is between species, called interspecific competition, and sometimes it’s between individuals of the same species, or intraspecific competition.

What best describes resource partitioning?

Resource partitioning is the division of limited resources by species to help avoid competition in an ecological niche. In any environment, organisms compete for limited resources, so organisms and different species have to find ways to coexist with one another.

Which region would likely have the greatest species diversity?

Species diversity is greatest in the tropics, particularly in tropical forests and coral reefs.

What is the intermediate disturbance hypothesis quizlet?

The intermediate disturbance hypothesis (IDH) suggests that local species diversity is maximized when ecological disturbance is neither too rare nor too frequent. At high levels of disturbance, due to frequent forest fires or human impacts like deforestation, all species are at risk of going extinct.

How does disturbance influence diversity?

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.

Who proposed the intermediate disturbance hypothesis?

BACKGROUND. In this study, Wayne Sousa tested the intermediate disturbance hypothesis proposed by Connell (1978). In the 70’s and 80’s ecologists hotly debated factors explaining high diversity in tropical regions and bottom of the deep sea.

What is intermediate disturbance hypothesis give an example of a disturbance event and explain the effect it has on the community?

The intermediate disturbance hypothesis states that moderate levels of disturbance can create conditions that foster greater species diversity than low or high levels of disturbance. For example, different frequencies of flooding affect the richness of invertebrate taxa living in beds of streams.

What does the intermediate disturbance hypothesis tell us about nature’s capacity to endure and respond to change?

What does the intermediate disturbance hypothesis tell us about natures’ capacity to endure and respond to change? … 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 are the consequences of the disturbance in the balance of nature?

Disturbances often act quickly and with great effect, to alter the physical structure or arrangement of biotic and abiotic elements. A disturbance can also occur over a long period of time and can impact the biodiversity within an ecosystem.

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What is the broadest level of organization?

In summary, we use the Linnaean system of classification to organize living organisms into related groups. Domain is the broadest category and consists of the domains Archae, Bacteria and Eukarya. Next is kingdom, then phylum, class, order, family, genus, and species.

Which ecological level is the broadest area of study?

What are the levels of organization of the biosphere from smallest to largest? Levels of ecological organization from smallest to largest: individual, population, species, community, ecosystem, biosphere.

What is the broadest level of classification used by scientists?

The levels of classification, from broadest to most specific, include: kingdom, phylum, class, order, family, genus, and species. The more classification levels an organism shares with another, the more characteristics they have in common.

Which disturbance would result in primary?

Primary succession occurs in essentially lifeless areas—regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier.

Which disturbance would result in primary succession Brainly?

3)The formation of Surtsey, a volcanic island off of the southern coast of Iceland, is the type of disturbance which results in primary succession.

What factors might result in a primary succession quizlet?

Occurs when an organisms colonizes a lifeless habitat. The development of plant and animal life in an area where NO ecosystem previously existed. Eventually primary succession will lead to equilibrium. Primary occurs on lava flow, rocks, cliffs and Sand dunes.

What would happen if butterflies went extinct?

Without them, people will not enjoy chocolates, apples, coffee and other foods that have become vital in our daily existence. Nearly 75 percent of the food crops worldwide depend on these pollinators, therefore, their existence and health affect the food production.

What effects do keystone species have on an ecosystem?

What Effect Do Keystones Have on an Ecosystem? Keystone species maintain the local biodiversity of an ecosystem, influencing the abundance and type of other species in a habitat. They are nearly always a critical component of the local food web.

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What is a keystone species and how might the removal of it affect the stability of and biodiversity within its ecosystem?

A keystone species is a species that has an unusually large effect on its ecosystem. If this is removed, it will take alot of things out of the ecosystem because it has a large effect on it. What would happen to a forest ecosystem if a fire killed most of its producers?

Why do moderate levels of disturbance result in an increase in community diversity?

Why do moderate levels of disturbance result in an increase in community diversity? … Competitively dominant species infrequently exclude less competitive species after a moderate disturbance.

What is the result of the association between birds and ants?

Some birds follow moving swarms of army ants in the tropics. As the ants march along the forest floor hunting insects and small vertebrates, birds follow and pick off any insects or small vertebrates that fly or jump out of the way of the ants. … A) Birds benefit from the association but have no impact on the ants.

What can be stated about species diversity and latitude?

In the accompanying figure, what can be stated about species diversity and latitude? … As latitude decreases, diversity decreases.

How do forest fires most likely benefit an ecosystem?

Benefits: The ecological benefits of wildland fires often outweigh their negative effects. … Fires often remove alien plants that compete with native species for nutrients and space, and remove undergrowth, which allows sunlight to reach the forest floor, thereby supporting the growth of native species.

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