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Comparison of Schnabel and Lincoln-Peterson Population Estimates Using a Snail Population on Blackburn Fork Creek John Lewis Tennessee Technological University.

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Presentation on theme: "Comparison of Schnabel and Lincoln-Peterson Population Estimates Using a Snail Population on Blackburn Fork Creek John Lewis Tennessee Technological University."— Presentation transcript:

1 Comparison of Schnabel and Lincoln-Peterson Population Estimates Using a Snail Population on Blackburn Fork Creek John Lewis Tennessee Technological University Cookeville, Tennessee 38505

2 Introduction  Show differences in the accuracy of two population estimates.  Show how one estimate may require less work, but a better estimate is obtained using the lengthier method.  Literature cited  Research and Management Techniques for Wildlife and Habitats Edited by Theodore Bookhout, The Wildlife Society, Bethesda, MD 1996 (methods).  Forestry Suppliers Incorporated Catalog 52, , Jackson, MS (materials).

3  Objective  The objective of my project will be to compare the precision between the Schnabel and Lincoln-Peterson population estimation methods using a snail population on Blackburn Fork Creek.  Hypothesis  There will be no difference between the Lincoln-Peterson population estimate and the Schnabel estimate.

4 Materials and Methods  Materials  Insulated hip waders  Surber-type square foot invertebrate sampler  Collection tray  Marking paint (clear fingernail polish)

5  Methods  Randomly place the Surber sampler over an area of substrate with the net trailing downstream.  Substrate within the frame is disturbed, dislodging all gastropods which are swept into the net by the current.  Rocks and all other substrate material are then scrubbed thoroughly within the sampler to remove tightly adhering gastropods.  The snails will be placed in a collecting tray and marked with clear marking paint (this increases the chance that all animals are equally likely to be captured).  Results will be marked on the data sheets.  Animals will be randomly redistributed throughout the test area; then another sample will be taken.  This collection will be repeated once more (two recaptures) to satisfy the requirements for the Schnabel estimate(Bookhout 1996).

6 Data Sheet

7 Timeline  Research literature hrs.  Data collection 6-8 hrs.  Analysis of data 3-5 hrs.  Consult literature 3-5 hrs.  Assembling presentation 6-8 hrs.  Presentation of results 1 hr.  Total hrs.

8 Budget Waders$68.95 Collection Tray $15.00 Surber square foot sampler $ Marking paint $6.00 Transportation$25.00 Total$364.95

9 Expected Results  I intend to show through this experiment that the Schnabel population estimator is a more accurate way to measure population numbers.


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