WLF 448: Fish & Wildlife Population Ecology
Lab Notes 3, Fall 2004

Problem Set #3:

Mapping a Species' Distribution

Delineate the distribution of either the lynx or fisher. In other words, repeat the in-class exercise but use the lynx or fisher coverage in stead of the wolverine coverage.  These point data were collected from state wildlife and natural resource agencies, Natural Heritage data centers, U.S. Department of Agriculture, Forest Service records, and limited published information (Maj and Garton 1994).
 

Bailey's sections for lynx and fisher. Known lynx and fisher experts chose the following Bailey's ecoregion sections as preferred by lynx and fisher, respectively.

 

Lynx:  Western Cascades, Flathead Valley, Idaho Batholith, Overthrust Mountains, and North-central Highlands

 

Fisher: Western Cascades, Flathead Valley, Idaho Batholith, Oregon and Washington Coast, and Southern Cascades. .

 

Answer the following questions:

1.

Is the population distribution that you delineated an example of a species population, subspecies population, metapopulation, population, deme, or a combination of the above? Explain your answer carefully. (2 points)

 

2.

Has the distribution of lynx or fisher (whichever one you chose to work with) in the western United States changed? Justify your answer. (2 points)

3.

List and describe any limitations/problems with the data set you used.  How might these limitations (if any) influence the interpretation of the data and any conclusions drawn from your analysis. (3 points)

 

4.

List and describe any limitations/problems with using a knowledge-based model.  How might these limitations (if any) influence the species distribution you developed and any conclusions drawn from it? (3 points)

4. Compare and contrast the spatial distribution (presence/absence) and the density of a species. (3 points)
5. Describe two potential applications (one wildlife, one fisheries) of this type of spatial analysis (or something similar).  Make sure to include what kind of data may be needed, what type of model would be appropriate, and the importance of the analysis. (3 points)

Turn in the following (due next week at the beginning of lab):

          Read directions carefully!

  1. A map of either the fisher or lynx distribution in western United States (4 points). The map does not have to be in color. Note: If you run into trouble printing and cannot resolve the problem, turn in a copy of your project (*.apr) on a 3.5"HD diskette. Be sure to label your diskette with your name, lab section, and file name.

  2. Answers to the 5 discussion questions listed above (16 points). REMEMBER: answers must be typed and double-spaced. Points will be deducted for improper grammar, spelling errors, and poor organization. Make sure your name and lab-section number are on the front page. Place your map after your answer page(s). Please staple your pages with 1 staple in the upper-left corner. We are not responsible for the loss of pages that are turned in loose.

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Revised: 20 August 2004