Why do moderate levels of disturbance result in an increase?
Why do moderate levels of disturbance result in an increase in community diversity? A) Habitats are opened up for less competitive species. B) Competitively dominant species infrequently exclude less competitive species after a moderate disturbance.
Which of the following is a likely explanation for why invasive species take over communities into which they have been introduced 3 points?
Which of the following is a likely explanation for why invasive species take over communities into which they have been introduced? Invasive species have a higher reproductive potential than native species.
On what kind of island would new species be most likely to arrive?
What kind of island is likely to have the highest number of species? The equilibrium theory of island biogeography predicts that large islands close to the mainland will have more species than small islands that are distant from the mainland.
What type of populations would be most likely to show resource partitioning?
sympatric populations of species with similar ecological niches.
What do intermediate disturbances lead to?
Disturbances act to disrupt stable ecosystems and clear species' habitat. As a result, disturbances lead to species movement into the newly cleared area. Once an area is cleared there is a progressive increase in species richness and competition takes place again.
Which of the following best explains why moderate levels of disturbance result in an increase in community diversity?
Which of the following best explains why moderate levels of disturbance result in an increase in community diversity? The resulting uniform habitat supports stability, which in turn supports diversity.
What are the likely outcomes from competition between species for a limited resource?
Select all likely outcomes from competition between species for a limited resource. –One species will drive another to extinction. -Natural selection will reduce competition between species over time. Resource partitioning allows species to do which of the following?
What are the impacts of introducing invasive species in biodiversity How can it lead to extinction?
Invasive species are capable of causing extinctions of native plants and animals, reducing biodiversity, competing with native organisms for limited resources and altering habitats. Invasive species are among the leading threats to native wildlife.
How do you think habitat islands form on land naturally?
How do you think habitat "islands" (pockets of isolated habitat) form on land naturally? Erosions, invasive species, fires, tornadoes, any disaster can cause islands to form. Larger islands have more biodiversity.
What biomes need fire for plant germination?
Many ecosystems, particularly prairie, savanna, chaparral and coniferous forests, have evolved with fire as an essential contributor to habitat vitality and renewal. Many plant species in fire-affected environments require fire to germinate, establish, or to reproduce.
Which of the following is an outcome of interspecific competition between two species in the same environment?
The result of this competition will be that one of the species will die out and the other species survives, because they require the same food/territory to survive but both can't win.
What are the effects of disturbance?
Disturbances act to disrupt stable ecosystems and clear species' habitat. As a result, disturbances lead to species movement into the newly cleared area (secondary succession). Once an area is cleared there is a progressive increase in species richness and competition between species takes place.
What does the intermediate disturbance theory predict?
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.
Which of the following best explains why moderate levels of disturbance result in an increase in community diversity quizlet?
Which of the following best explains why moderate levels of disturbance result in an increase in community diversity? The resulting uniform habitat supports stability, which in turn supports diversity. Less-competitive species evolve strategies to compete with dominant species.
What are the likely outcomes from competition between species for a limited resource quizlet?
Select all likely outcomes from competition between species for a limited resource. –One species will drive another to extinction. -Natural selection will reduce competition between species over time. Resource partitioning allows species to do which of the following?
What are the outcomes of competition?
The four outcomes of this model are: 1) species A competitively excludes species B; 2) species B competitively excludes species A; 3) either species wins based on population densities; or 4) coexistence occurs. Species can survive together if intra-specific is stronger than inter-specific competition.
What are the consequences of invasive species?
Invasive species are capable of causing extinctions of native plants and animals, reducing biodiversity, competing with native organisms for limited resources, and altering habitats. This can result in huge economic impacts and fundamental disruptions of coastal and Great Lakes ecosystems.
What are the impacts of invasive alien species?
The review found that many invasive alien species alter change habitat suitability, pollination networks or seed dispersal mechanisms among native species, threaten native species through hybridization and predation, and impact negatively on hydrological cycles and nutrient dynamics.
How does biodiversity contribute to the sustainability of an ecosystem quizlet?
Why does biodiversity contribute to a habitat's sustainability? The more plants and animals in a habitat, the greater the biomass, which is how habitats store energy. The greater the number of species, the more competition there is for food between predators, which sustains their populations.
What is the meaning of genetic diversity?
Genetic Diversity refers to the range of different inherited traits within a species. In a species with high genetic diversity, there would be many individuals with a wide variety of different traits. Genetic diversity is critical for a population to adapt to changing environments.
How do biotic factors differ from abiotic in terms of function or influence in an ecosystem?
Abiotic limiting factors restrict the growth of populations. They help determine the types and numbers of organisms able to exist within an environment. Biotic factors are living things that directly or indirectly affect organisms within an environment.
What pine tree needs fire reproduce?
Growing in a lush grove, giant sequoia trees can stand up to 325 feet tall and live as long as 3,000 years. Their imposing size makes Sequoiadendron giganteum seem remote and invincible, but these trees that only grow on the western slope of the Sierra Nevada need the unpredictable heat of fire to reproduce.
What are the outcomes of interspecific competition?
Instead, three potential outcomes can result from strong interspecific competition: competitive exclusion, local extinction and niche differentiation.
Which of the following is an outcome of interspecific competition between two species in the same environment quizlet?
The result of this competition will be that one of the species will die out and the other species survives, because they require the same food/territory to survive but both can't win.
What is a possible consequence of a disruption to an ecosystem?
The impact of ecosystem destruction are the following: Increased flooding due to the erosion of soil and lack of trees. Rising of the sea levels due to the melting of the glaciers, caused by Global Warming. Disruption of the food chain when the apex predators become extinct.
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.
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.
Why do intermediate levels of disturbance increase biodiversity?
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.
Which of the following is a process whereby two species compete for a limiting resource and one drives the other to local extinction?
Interspecific competition, in ecology, is a form of competition in which individuals of different species compete for the same resources in an ecosystem (e.g. food or living space).
What are two possible outcomes of competition?
Instead, three potential outcomes can result from strong interspecific competition: competitive exclusion, local extinction and niche differentiation. Competitive exclusion occurs when one species outcompetes another in a part of its habitat so well that the second species is excluded from that part.