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BIO313: Population Ecology

Unit 4: Population Management: Artificial Regulation of Population Size   We will wrap up this course by learning how to apply our newfound knowledge of population dynamics to real-world situations.  First, we will review the importance of conservation at the population, species, and ecosystem levels.  Next, we will discuss the sampling methods used to gather the necessary data to develop population estimates and models.  We will learn how to use this data to analyze the viability of a population.  We will discuss methods of artificial population regulation.  Finally, we will produce a resource management action plan.

Unit 4 Time Advisory
This unit should take you approximately 10 hours to complete.

☐    Subunit 4.1: 1 hour

☐    Subunit 4.2: 4 hours

☐    Subunit 4.3: 1 hours

☐    Subunit 4.4: 4 hours

Unit4 Learning Outcomes
Upon successful completion of this unit, students will be able to: - Discuss the importance of conservation of habitats, populations, communities, and ecosystems. - Employ the principles and techniques of population ecology to analyze population viability, predict future population growth and design a resource management action plan to conserve a population. - Discuss the advantages and disadvantages of various sampling methods to estimate population size and various methods of artificial population regulation to control population size.

4.1 Importance of Conservation   - Reading: The Saylor Foundation's “Importance of Conservation” Link: The Saylor Foundation's “Importance of Conservation” (PDF)
 
Instructions: Please read this entire PDF, which discusses why conservation of wild populations is important and how everything you have learned so far in this course is used by professional biologists to accomplish the goals of population, habitat, and species conservation.

4.2 Sampling Methods   - Reading: National Institute on Aging: Dr. Alexei Sharov: “Estimation of Population Density and Size” Link: National Institute on Aging: Dr. Alexei Sharov: “Estimation of Population Density and Size” (HTML)
 
Instructions: Please click all eight links to read these entire sections, which explain various sampling methods used to estimate population sizes in the field. These materials also cover subunits 4.2.1, 4.2.2, and 4.2.4.
 
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4.2.1 Basic Count   - Lecture: YouTube: JeliBaggins4444: “How to Process a Gunnison’s Prairie Dog” and sumira821: “Processing” Links:YouTube: JeliBaggins4444: “How to Process a Gunnison’s Prairie Dog” (YouTube) and sumira821: “Processing” (YouTube)
 
Instructions: Please watch these entire videos (approximately 8 minutes and 11 minutes, respectively), which show student field assistant interns collecting data on Gunnison’s prairie dogs in New Mexico.
 
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4.2.2 Random Plot Sampling   4.2.3 Transect Lines   - Reading: The Saylor Foundation: “Transect Lines” Link: The Saylor Foundation: “Transect Lines” (PDF)
 
Instructions: Please read this entire PDF, which explains the technique of estimating population size by using transect lines.

4.2.4 Mark and Recapture   - Lecture: iTunes U: Agnes Scott College: Dr. Lock Rogers, Bess Harris, and April Garrett: “Frog Sampling for Mark/Recapture” Link: iTunes U: Agnes Scott College: Dr. Lock Rogers, Bess Harris, and April Garrett: “Frog Sampling for Mark/Recapture” (iTunes)
 
Instructions: Please click this link, which might ask you to launch iTunes, and then listen to this entire lecture (approximately 10 minutes), which describes the mark/recapture technique for estimating population size.
 
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4.3 Population Viability Analysis   - Reading: Ramas: Ecological and Environmental Software: “A Short Introduction to Population Viability Analysis” Link: Ramas: Ecological and Environmental Software: “A Short Introduction to Population Viability Analysis” (HTML)
 
Instructions: Please read this entire webpage.  A population viability analysis (PVA) is conducted to assess the current size of a population, assess whether that size is large enough to ensure survival of the population, and design conservation programs to preserve the population by using the information obtained.
 
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  • Reading: University of Connecticut: Dr. Kent Holsinger: “Population Viability Analysis” Link: University of Connecticut: Dr. Kent Holsinger: “Population Viability Analysis”(HTML)
     
    Instructions: Please read this entire webpage, which highlights certain aspects of a PVA deemed particularly important by this researcher.
     
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  • Reading: Colorado State University: Dr. Gary White: “Population Viability Analysis” Link: Colorado State University: Dr. Gary White: “Population Viability Analysis”(HTML)
     
    Instructions: Please read this entire presentation, ensuring to use the buttons at the bottom of the page to navigate through the pages.
     
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  • Reading: The Nature Conservancy: William Morris et al.: “A Practical Handbook for Population Viability Analysis” Link: The Nature Conservancy: William Morris et al.: “A Practical Handbook for Population Viability Analysis” (PDF)

    Instructions: Please read this entire PDF.  The discussion in this handbook will be useful to you at the end of this course, when you develop your own population viability analysis.

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4.3.1 Applications of Population Viability Analyses   - Reading: The Saylor Foundation: “Applications of Population Viability Analyses” Link: The Saylor Foundation: “Applications of Population Viability Analyses” (PDF)
 
Instructions: Please read this entire PDF, which discusses how population viability analyses are used.  This material also covers subunits 4.3.1.1 through 4.3.1.4.

4.3.1.1 Conservation of Populations   4.3.1.2 Conservation of Species   4.3.1.3 Conservation of Habitats   4.3.1.4 Epidemiology   4.3.1.4.1 Disease Transmission within the Population   4.3.1.4.2 Disease Transmission between Populations   4.4 Methods of Artificial Population Regulation (Population Management)   - Reading: The Saylor Foundation: “Methods of Artificial Population Regulation (Population Management)” Link: The Saylor Foundation: “Methods of Artificial Population Regulation (Population Management)” (PDF)
 
Instructions: Please read this entire PDF, which discusses the various methods used in artificial population regulation (population management).  This material also covers subunits 4.4.1 through 4.4.5.

4.4.1 Eradication of the Population from an Area   4.4.2 Exclusion of the Population from an Area   4.4.3 Biological Control of the Population   4.4.4 Chemical Control of the Population   4.4.5 Integrated Regulation   4.5 Resource Management Action Plan   - Reading: The Saylor Foundation: “Resource Management Action Plan” Link: The Saylor Foundation: “Resource Management Action Plan” (PDF)
 
Instructions: Please read this entire PDF for instructions on applying your knowledge to develop a population viability analysis and a resource management action plan to preserve a population.

 Terms of Use: Please respect the copyright and terms of use
displayed on the webpage above.