Give two examples of the benefits gained by theintroduction of nonnative species. Give two examplesof the harmful effects of nonnative species that havebeen introduced deliberately and two examples of thesame for accidentally introduced species. Explain whyprevention is the best way to reduce threats frominvasive species and list four proposed ways to implement this strategy

Give two examples of the benefits gained by theintroduction of nonnative species. Give two examplesof the harmful effects of nonnative species that havebeen introduced deliberately and two examples of thesame for accidentally introduced species. Explain whyprevention is the best way to reduce threats frominvasive species and list four proposed ways to implement this strategy

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter19: Population And Community Ecology

Section: Chapter Questions

Problem 17RQ: When an invasive species alters the community structure it is introduced to, what can the...

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Environmental scientists David Pimentel, Rodolfo Zuniga, and Doug Morrison of Cornell University reviewed scientific estimates for the economic and ecological costs imposed by introduced and invasive species in the United States. They found that, as of 2005, approximately 50,000 species had been introduced in the United States and that these accountedfor over $120 billion in economic costs each year. These costs include direct losses and damage, as well as costs required to control the species. (The researchers did not quantify monetary estimates for losses of biodiversity, ecosystem services, and aesthetics, which they said would drive total costs several times higher.) Calculate values missing from the table to determine the number of introduced species of each type of organism and the annual cost that each imposes on our economy. Of the 50,000 species introduced into the UnitedStates, half are plants. Describe two ways in whichnon-native plants might be brought to a new location.How…
List two ways exotic species are introduced to a new habitat and list two consequences of it becoming an invasive species that takes over a habitat.
Describe the potential effects when a keystone species is removed from a community.
When an invasive species alters the community structure it is introduced to, what can the consequence be? a. extinction of economically important species b. reduced predation on some native species c. increased predation on some native species d. all of the above
Describe the mechanisms by which human population growth and resource use causes increased extinction rates.
How might your own behavior influence the influx and ecological impacts of non-native species like those listed above? Name three things you could personally do to help reduce the impacts of invasive species.
Give at least two keystone species in the Philippines with their scientific name , what their contribution to the environment is, and what would happen if they are removed from the environment.
It has been said that humans are a keystone species. Do you agree or disagree with this statement. In a cohesive paragraph, define a keystone species and name and describe three reason why you agree or disagree with the statement "Humans are a keystone species." Be sure to give supporting details and cite your sources. Finish this assignment by providing thoughtful feedback for two of your classmates, discussing their views
Compare and contrast the three main types of exploitative species interactions (predation, parasitism, and herbivory), explaining how they differ
for species inasion what are the local negative ecological impacts of two example invasive species
Explain the following values of biodiversity using coral reefs as an example: direct use, indirect use, option and amenity.
Species 1K1 (Carrying capacity of Species 1) = 1,000r1 (Intrinsic rate of increase of Species 1) = 0.02 Species 2K2 (Carrying capacity of Species 2) = 400r2 (Intrinsic rate of increase of Species 2) = 0.05Which one will recover from disturbances more quickly? Species 1 Species 2