Salmon Use of Geomorphically Restored Streams at Point Reyes National Seashore
- Work with redds-count data to determine whether a culvert restoration effort had the desired effect of removing a barrier to salmon swimming upstream to spawn.
- Create a bar graph using data for John West Fork of the number of redds per 1-km stream segments for four spawning runs of 1997-1998 through 2000-2001.
- Create another bar graph using data of redd density for the main coho-bearing streams in the Lagunitas Creek-Olema Creek Watershed, collected in spawning runs of 1997-1998 through 2006-2007.
- Calculate percent change in redd counts and redd density from before the treatment to after the treatment.
- Read background material on Point Reyes National Seashore; coho salmon and their life cycle; stream bed geomorphology, fluvial processes, and salmon habitat; and redds.
In the process the students will:
- Get practice making bar graphs and calculating percent differences.
- Use the concept of treatment vs. control in the assessment of whether an intervention was effective.
- See a connection between stream bed geomorphology and the life cycle of salmon in a Pacific Coast national park.
- See what is involved in salmon crossing roads, and why they must.
- See an example of NPS environmental and ecological stewardship in action, as well as the relevance of data for evaluating it.
- Learn two words that they likely did not know before: anadromous fish and redds.
Context for Use
This module is designed for potential use in the Geology of National Parks service course at USF. The course is offered as an online course every semester. It includes readings from Parks and Plates, weekly quizzes based on that textbook, and weekly student activities designed to align the course with the University's general education requirements. This module is intended to be one of those activities, with the specific goal of meeting the gen-ed quantitative literacy dimension.
Description and Teaching Materials
The module is a PowerPoint presentation with embedded spreadsheets. Click on the link below to download a copy of the module.
PowerPointSSACgnp.GB661.MCR1.3 (PowerPoint 3.5MB Oct26 12)
Optimal results are achieved with Microsoft Office 2007 or later; the module will function in earlier versions with slight cosmetic compromises. If the embedded spreadsheets are not visible, save the PowerPoint file to disk and open it from there.
The above PowerPoint presentation file is the student version of the module. It includes a template for students to use to complete the spreadsheet(s) and answer the end-of-module questions, and then turn in for grading.
An instructor version is available by request. The instructor version includes the completed spreadsheet. Send your request to Len Vacher (email@example.com) by filling out and submitting the Instructor Module Request Form (Acrobat (PDF) 91kB Aug20 12).
Teaching Notes and Tips
The module is constructed to be a stand-alone resource. It can be used as a homework assignment, lab activity, or as the basis of an interactive classroom activity. It was used as an out-of-class activity in a senior-elective course, Environmental Geology of the National Parks (for geology majors and nonmajors), during development of the module in Spring 2010. In general, the students considered this module to be one of the more elementary modules in the collection. It is now one of the modules that is rotated into the online introductory-level Geology of National Parks course.
There is a slide at the end of the presentation that contains end-of-module questions. The end-of-module questions can be used to examine student understanding and learning gains from the module. Pre/post test, pre/post test answer key, and answer key for end-of-module questions are at the end of the instructor version of the module.
References and Resources
Del Real, S.C., Carlisle, S.J., Reichmuth, M., Ketcham, B.J. 2007. Adult Escapement Monitoring Program Summary 2006-2007. Natural Resource Technical Report NPS/SFAN/NRTR—2007/001. National Park Service, San Francisco Bay Area Network Inventory and Monitoring Program, Point Reyes Station, CA.
US National Park Service (NPS)
Point Reyes National Seashore
US Fish & Wildlife Service
US Forest Service