Knocked Out By Trout: The Relationship Between Nonnative Trout and Pacific Tree Frogs
The scientists were interested in discovering whether the Pacific tree frog population might also be affected by the presence of nonnative trout, similar to the way these trout had affected the mountain yellow-legged frog population. The scientists wanted to compare the populations of Pacific tree frogs with the populations of nonnative trout in JJohn Muir Wilderness (JMW) and Kings Canyon National Park (KCNP).
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In this FACTivity, you will explore whether it is in society’s interest to stock the Sierra Nevada lakes with fish or to stop stocking the lakes.FACTivity – Knocked Out By Trout
In this FACTivity, you will explore whether it is in society’s interest to stock the Sierra Nevada lakes with fish or to stop stocking the lakes.
Glossary
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Haiganoush Preisler
My favorite science experience is talking with scientists about a new data set!!!! For a statistician (stat uh stish un), happiness is a new data set! Statisticians are people who...View Profile -
Karen Pope
My favorite science experience was learning about the different strategies animals use to survive in their natural environment. For example, mountain yellow-legged frogs survive the long, cold winter in the...View Profile -
Kathleen Matthews
My favorite science experience was seeing the results of our research used in new management programs that led to increased amphibian populations.View Profile -
Ronald Knapp
My favorite science experience is spending my summers in the mountains, counting frogs, catching bugs, and enjoying the most beautiful ‘office’ in the world.View Profile
Standards addressed in this Article:
Social Studies Standards
- People, Places, and Environments
Note To Educators
The Forest Service's Mission
The Forest Service’s mission is to sustain the health, diversity, and productivity of the Nation’s forests and grasslands to meet the needs of present and future generations. For more than 100 years, our motto has been “caring for the land and serving people.” The Forest Service, an agency of the U.S. Department of Agriculture (USDA), recognizes its responsibility to be engaged in efforts to connect youth to nature and to promote the development of science-based conservation education programs and materials nationwide.
What Is the Natural Inquirer?
Natural Inquirer is a science education resource journal to be used by students in grade 6 and up. Natural Inquirer contains articles describing environmental and natural resource research conducted by Forest Service scientists and their cooperators. These scientific journal articles have been reformatted to meet the needs of middle school students. The articles are easy to understand, are aesthetically pleasing to the eye, contain glossaries, and include hands-on activities. The goal of Natural Inquirer is to stimulate critical reading and thinking about scientific inquiry and investigation while teaching about ecology, the natural environment, and natural resources.
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Meet the Scientists
Introduces students to the scientists who did the research. This section may be used in a discussion about careers in science.
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What Kinds of Scientist Did This Research?
Introduces students to the scientific disciplines of the scientists who conducted the research.
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Thinking About Science
Introduces something new about the scientific process, such as a scientific habit of mind or procedures used in scientific studies.
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Thinking About the Environment
Introduces the environmental topic being addressed in the research.
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Introduction
Introduces the problem or question that the research addresses.
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Method
Describes the method the scientists used to collect and analyze their data.
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Findings & Discussion
Describes the results of the analysis. Addresses the findings and places them into the context of the original problem or question.
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Reflection Section
Presents questions aimed at stimulating critical thinking about what has been read or predicting what might be presented in the next section. These questions are placed at the end of each of the main article sections.
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Number Crunches
Presents an easy math problem related to the research.
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Glossary
Defines potentially new scientific or other terms to students. The first occurrence of a glossary word is bold in the text.
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Citation
Gives the original article citation with an internet link to the original article.
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FACTivity
Presents a hands-on activity that emphasizes something presented in the article.
Science Education Standards
You will find a listing of education standards which are addressed by each article at the back of each publication and on our website.
We Welcome Feedback
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Contact
Jessica Nickelsen
Director, Natural Inquirer program -
Email
Lessons
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In this lesson plan, students learn about invasive species in their area and create brochures educating others about their characteristics. Materials: Internet or library access for research Paper and writing...Lesson Plan – Invasive Species
In this lesson plan, students learn about invasive species in their area and create brochures educating others about their characteristics. Materials: Internet or library access for research Paper and writing...
Education Files
Project Learning Tree
If you are a Project Learning Tree trained educator, you may use PLT Pre K–8th Activity Guide #33, “Forest Consequences” or Pre K-8 Activity Guide #45, “Web of Life,” as additional activity resources.
These activities teach how different types of land management affect ecosystems and introduce how nonnative species change the web of life.