Water 483/683: Fisheries Research
Fall Semester 1998, 3 Credits
Instructor: Michael J. Hansen
Office: 174 CNR
Office Hours: posted on my office door
Office Phone: 715/346-3420
Classroom: 361 CNR
Lectures: Monday and Wednesday 9:00-9:50
Lab: Wednesday 14:00-15:50
Objectives: The course will introduce students to the scientific research process, including: formulating a hypothesis, designing and conducting a study, writing a scientific paper, giving an oral presentation, and providing an oral defense of the project. The student will become familiar with principles of what makes an hypothesis testable, how to design a study to address the hypothesis, the strengths and weaknesses of most common fish sampling gears, how to organize and write a scientific paper, and how to plan, deliver, and defend a scientific presentation.
Textbook: Murphy, Brian, and David Willis, editors. 1996. Fisheries Techniques, Second Edition. American Fisheries Society, Bethesda, Maryland. [All students are urged to purchase, rather than rent, the textbook to ensure they begin the acquisition of a library of crucial reference books.]
Format: The two weekly lectures will cover a variety of topics on fisheries research methods. The weekly lab periods will provide practical exercises on the lecture subjects and will also be used for working on the class project. The class project will include laboratory and statistical analysis of a real fishery research problem, a written report, an oral presentation, and an oral defense.
Grading: Assignments will not be accepted if they are turned in after the due date, other than for extenuating circumstances such as a family or health emergency. The final class grade will be weighted according to the schedule below:
40% Written Report: the written report will be graded on its completeness of thought, clarity of writing, organization, appropriateness of experimental design and data analysis, interpretation of results, depth of discussion, and use of literature. The report will be returned to the student in fully edited form for use in preparing future written reports.
30% Oral Presentation: the oral presentation will be graded on organization, clarity of visual aids, verbal presentation, and length. The critique of the oral presentation will be returned to the student for use in preparing future oral presentations.
20% Weekly Assignments: a series of exercises related to each weekly lecture topic is intended to provide practical experience in the use and interpretation of fishery statistics. Each exercise involves a simple mathematical problem and several interpretive questions. Ten of the weekly exercises will count toward this portion of the grade.
10% Oral Defense: each student will provide an oral defense of their project during the week of final exams. The defense will be one hour in length and will mimic a thesis defense. The oral defense will be graded as either pass or fail, as is true of a thesis defense.
Field Trips: There will be two field trips during the semester. One field trip will teach students basic methods of measuring fish habitat and another that will provide students with a basic understanding of passive and active sampling methods. Dr. Michael Bozek, of the Wisconsin Cooperative Fishery Research Unit, will design and lead this field trip. A second field trip will involve travel to Lake Superior, setting and lifting a gill net, and basic operation of a trawl. During the first laboratory period, the field trip will be scheduled for dates and times that are convenient to the majority of the students. Students will be expected to provide their own clothing, appropriate for existing weather conditions, and their own lunch.
Schedule: The schedule below identifies subjects to be covered in the two weekly lectures (each lecture topic is shown in italics), followed by the topic of the exercise to be covered during the lab period. The weekly lab periods will also be devoted to working on projects. Readings from the textbook provide background for the lectures and should be read before the lecture on that subject. Sections of the written project report will be turned in, beginning in the eighth week, so you need to invest time during the first seven weeks working on your project. Sections of the written report will be edited and returned within one week, for use in preparing the final report. Oral presentations that summarize the class project and that include visual aids will be given during the final two weeks of class. Oral defenses of the project research will be conducted during the week of final exams.
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Dates: |
Lectures/Lab Topics: |
Textbook Readings and Assignments: |
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Sep 2 |
The Research Process: |
1. Planning for Sampling |
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Steps to Research |
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Experimental Design |
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Statistical Analysis |
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Lab: Formulating Hypotheses |
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Sep 9 |
Sampling Design and Analysis |
2. Data Management and Statistical Techniques |
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Statistical Analysis |
3. Safety in Fisheries Work |
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Scientific Report Writing |
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Oral Presentation Skills |
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Lab: Designing Experiments |
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Sep 14-16 |
Habitat Measurement Methods |
4. Aquatic Habitat Measurements |
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Dr. Michael A. Bozek |
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Lab: Habitat Measurement |
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Sep 21-23 |
Passive Fishing Methods: |
6. Passive Capture Techniques |
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Entanglement Nets |
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Entrapment Nets |
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Lab: Gear Selectivity |
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Sep 28-30 |
Active Fishing Methods: |
7. Active Fish Capture Methods |
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Trawls |
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Seines |
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Lab: Catchability |
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Oct 5-7 |
Electrofishing Methods: |
8. Electrofishing |
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Boom shockers |
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Backpack shockers |
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Lab: Mortality |
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Oct 12-14 |
Mark-Recapture Methods: |
12. Tagging and Marking |
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Tagging and Marking |
19. Advances in Underwater Biotelemetry |
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Radio-Tagging |
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Lab: Mark-Recapture |
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Oct 19-21 |
Size Measurement Methods: |
15. Length, Weight, and Associated ... Indices |
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Length and Related Indices |
Introduction for Report Due |
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Weight and Related Indices |
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Lab: Length-Weight Relation |
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Oct 26-28 |
Age and Growth Methods: |
16. Determination of Age and Growth |
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Scales and Otoliths |
Methods for Report Due |
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Spines and Fin Rays |
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Lab: Von Bertalanffy Growth |
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Nov 2-4 |
Diet Analysis Methods: |
17. Quantitative Description of the Diet |
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Stomach Samples |
11. Invertebrates |
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Selection and Overlap Indices |
Results for Report Due |
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Lab: Prey Selection and Diet Overlap |
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Nov 9-11 |
Creel Survey Methods: |
20. Sampling the Recreational Creel |
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Effort and Catch Rate |
Discussion for Report Due |
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Catch and Harvest |
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Lab: Catch and Effort Estimation |
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Nov 16-18 |
Commercial Survey Methods: |
21. Commercial Fisheries Surveys |
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Catch and Effort |
First Full Draft of Report Due |
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Catch Rates and By-Catch |
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Lab: Virtual Population Analysis |
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Nov 23-25 |
Underwater Methods: |
13. Acoustic Assessment of Fish Abundance |
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Hydroacoustics |
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Lab: Work on Class Projects |
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Nov 30-2 |
Oral Presentations |
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Dec 7-9 |
Oral Presentations |
Final Draft of Report Due |
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Dec 14-22 |
Oral Defenses |
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