Threats to Biodiversity Match each description to the type of threat it presents to biodiversity. NOTE: If you want to change your selection, you'll need to delete the one you already chose. After you delete it, the list of choices will pop back up and you can make a different choice Burning fossil fuels and cutting down forests habitat loss Replacing grassland with neighborhoods climate change Accidentally or purposefully moving an organism from one place to exotic species another overharvesting Many people fishing for the same species

Threats to Biodiversity Match each description to the type of threat it presents to biodiversity. NOTE: If you want to change your selection, you'll need to delete the one you already chose. After you delete it, the list of choices will pop back up and you can make a different choice Burning fossil fuels and cutting down forests habitat loss Replacing grassland with neighborhoods climate change Accidentally or purposefully moving an organism from one place to exotic species another overharvesting Many people fishing for the same species

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter25: Human Impacts On The Biosphere

Section: Chapter Questions

Problem 2CT

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nd biodiversity of sites in their own community, students performed a leaf litter lab where leaf litterwas collected from two sites: one from beneath the trees in an organically managed, commercial landscapeestablished one year ago and one from beneath the trees in a nearby nature preserve that have not been trimmed ormanaged in over twenty years. The students hypothesized that there would be more insect biodiversity in the leaflitter at the nature preserve than at the managed site. The leaf litter from each site was placed into a funnel with alight shone on the top to drive any insects out of the litter. Species were collected in an alcohol-filled containerbelow the funnel, and the species were identified using magnifying lenses and a key
A conservation group has approached you to provide recommendations for purchasing land to help an endangered species and increase the overall biodiversity of a forest in a landscape that has been fragmented by agriculture. In the landscape, there are several medium to largefragments and a number of small fragments. Provide recommendations to the conservation group about where in the landscape they should devote their limited resources for a maximum impact. Justify your recommendations based on metapopulation dynamics of the endangered forest breeding species and island biogeographytheory (overall biodiversity). A diagram supplementing your written answer is encouraged.
You are part of a restoration ecology program that is attempting to reintroduce an endangeredbird to a new habitat in Michigan, where they have been locally extinct for decades. The species went through an extreme bottleneck after they were almost wiped-out due to insecticide use in the 1960s. Maintaining what limited genetic diversity remains is an important priority, especially because disease spread from other bird speciesrepresents a major threat to the struggling populations of these birds. Captive-bred warblersdestined for this site have been genotyped at a neutral marker locus “D” with two alleles, D95and D135. The genotype counts in the captive animals are as follows:D135/D135 = 12, D135/D95 = 20, and D95/D95 = 48 2a. If all the species are used to start the new population, what is the probability that thepopulation eventually becomes fixed for allele D95 through drift?2b. Let’s assume the population stays the same size (as the number of introduced individuals) inthe new…
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Ecology and Biology: Shannon Diversity Index: Definition & Example The Shannon Diversity Index (sometimes called the Shannon-Wiener Index) is a way to measure the diversity of species in a community. Denoted as H, this index is calculated as: H = -Σpi * ln(pi) where: Σ: A Greek symbol that means “sum” ln: Natural log pi: The proportion of the entire community made up of species i The higher the value of H, the higher the diversity of species in a particular community. The lower the value of H, the lower the diversity. A value of H = 0 indicates a community that only has one species. The Shannon Equitability Index is a way to measure the evenness of species in a community. The term “evenness” simply refers to how similar the abundances of different species are in the community. Denoted as EH, this index is calculated as: EH = H / ln(S) where: H: The Shannon Diversity Index S: The total number of unique species What is the Shannon diversity index value for this community? What…
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