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.

Dates:

Lectures/Lab Topics:

Textbook Readings and Assignments:

Sep 2

The Research Process:

1. Planning for Sampling

 

Steps to Research

 

 

Experimental Design

 

 

Statistical Analysis

 

 

Lab: Formulating Hypotheses

 

Sep 9

Sampling Design and Analysis

2. Data Management and Statistical Techniques

 

Statistical Analysis

3. Safety in Fisheries Work

 

Scientific Report Writing

 

 

Oral Presentation Skills

 

 

Lab: Designing Experiments

 

Sep 14-16

Habitat Measurement Methods

4. Aquatic Habitat Measurements

 

Dr. Michael A. Bozek

 

 

Lab: Habitat Measurement

 

Sep 21-23

Passive Fishing Methods:

6. Passive Capture Techniques

 

Entanglement Nets

 

 

Entrapment Nets

 

 

Lab: Gear Selectivity

 

Sep 28-30

Active Fishing Methods:

7. Active Fish Capture Methods

 

Trawls

 

 

Seines

 

 

Lab: Catchability

 

Oct 5-7

Electrofishing Methods:

8. Electrofishing

 

Boom shockers

 

 

Backpack shockers

 

 

Lab: Mortality

 

Oct 12-14

Mark-Recapture Methods:

12. Tagging and Marking

 

Tagging and Marking

19. Advances in Underwater Biotelemetry

 

Radio-Tagging

 

 

Lab: Mark-Recapture

 

Oct 19-21

Size Measurement Methods:

15. Length, Weight, and Associated ... Indices

 

Length and Related Indices

Introduction for Report Due

 

Weight and Related Indices

 

 

Lab: Length-Weight Relation

 

Oct 26-28

Age and Growth Methods:

16. Determination of Age and Growth

 

Scales and Otoliths

Methods for Report Due

 

Spines and Fin Rays

 

 

Lab: Von Bertalanffy Growth

 

Nov 2-4

Diet Analysis Methods:

17. Quantitative Description of the Diet

 

Stomach Samples

11. Invertebrates

 

Selection and Overlap Indices

Results for Report Due

 

Lab: Prey Selection and Diet Overlap

 

Nov 9-11

Creel Survey Methods:

20. Sampling the Recreational Creel

 

Effort and Catch Rate

Discussion for Report Due

 

Catch and Harvest

 

 

Lab: Catch and Effort Estimation

 

Nov 16-18

Commercial Survey Methods:

21. Commercial Fisheries Surveys

 

Catch and Effort

First Full Draft of Report Due

 

Catch Rates and By-Catch

 

 

Lab: Virtual Population Analysis

 

Nov 23-25

Underwater Methods:

13. Acoustic Assessment of Fish Abundance

 

Hydroacoustics

 

 

Lab: Work on Class Projects

 

Nov 30-2

Oral Presentations

 

Dec 7-9

Oral Presentations

Final Draft of Report Due

Dec 14-22

Oral Defenses