Biogeography activity
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Island Biogeography Activity
Please follow the instructions below. Once you finish your analyses please show
Dr. Haase. We will discuss as a class.
INTRODUCTION
How many different species will be found in a habitat of a certain size? Answering this question could help us better understand patterns in where species are found. It could also help us predict how many species will be lost from damaged habitats and design protected areas to save Earth’s remaining wildlife.
To investigate the relationship between species number and habitat size, scientists studied species of arthropods — such as beetles, grasshoppers, flies, and moths — in a desert in central New Mexico, USA. They focused on arthropods that live on desert shrubs. Some of these arthropod species are specialist herbivores that feed and live only on these shrubs. The sand and grasses between the shrubs do not provide the food or shelter that these specialist species need to
survive for long periods.
The scientists counted the number of specialist herbivore arthropod species on individual, isolated shrubs. They calculated shrub volume to represent habitat size, the distance from each shrub to a dense clump of shrubs (aka a “continent”), and calculated shrub density (the number of shrubs per square meter). To test the species-area relationship, the scientists selected shrubs at the same distance from the continent. To test the impact of habitat distance, the scientists selected shrubs of the same habitat size. The scientists then used an insecticide to fumigate, or kill all the arthropods on, these shrubs. Two weeks after fumigation, they counted the arthropod species that had returned to each shrub. These arthropods came from other places in the environment, including shrubs that had not been fumigated.
Use the collected data to answer the questions below.
QUESTIONS:
1.
Create 3 scatter plots that each represent the relationships below:
a.
Shrub size and richness, both before and after fumigation
b.
Shrub distance and richness
c.
Shrub density and richness, before and after fumigation.
Make sure to follow figure guidelines as discussed in class. Include axes labels with units, tick marks, and a descriptive caption.
2.
Is there a significant relationship between shrub size and arthropod richness before fumigation? After? Use a linear regression analyses and make sure to report your coefficient, 95% confidence intervals, R
2
value, and p-value.
3.
Is there a significant relationship between distance from shrub to large, dense shrubs and arthropod richness before fumigation? Use a linear regression analyses and make sure to report your coefficient, 95% confidence intervals, R
2
value, and p-value.
4.
Is there a significant relationship between shrub density (e.g., isolation) and arthropod richness before fumigation? After? Use a linear regression analyses and make sure to report your coefficient, 95% confidence intervals, R
2
value, and p-value.
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the link for the article is all i could include but ill post the name of the article as well.
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Please see the attached image to get a better grasp of the question.
How to Calculate Biodiversity and Ecology College Biology 2 Advanced Concepts
Background Information
In the Shannon index, p is the proportion (n/N) of individuals of one particular species found (n) divided by the total number of individuals found (N), ln is the natural log, Σ is the sum of the calculations, and s is the number of species...
Species Evenness
Species evenness takes into account the number of species and the relative abundance of species in a community. Several indices have been proposed. Two of the commonly used measures of evenness are the Shannon index (H) and the Simpson index (D).
Question 2: What is the Shannon diversity index value for this community? What is the species evenness for this community?
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First, here are UNESCO's Biosphere Reserve and World Heritage programs.
https://en.unesco.org/node/314143
Using the information in the link above, answer the following questions:
Refer to this page on their website: https://en.unesco.org/biosphere/eu-na
https://whc.unesco.org/en/about/
7. What is the nearest World Heritage site to you? https://whc.unesco.org/en/list/
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Do a Travelogue
Situation: You are conservation biologist working as a part time reporter In a local television station. You are assigned to make documentary slides that promote Philippine diversity. Your task is to create slides that will describe the causes and ettects of biodiversity loss in the country. You may also include the advantages of achieving high biodiversity to maintain the stability of an ecosystem. Your work will be evaluated according to organization, content, and accuracy of science concepts.
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Question:-
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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
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Denoted as EH, this index is calculated as:
EH = H / ln(S)
where:
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What is the Shannon diversity index value for this community?
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