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  • North of the Border: Are Nonnative Species Moving Northward As the Climate Changes?
Cover of the North of the Border article. The cover is a close up shot of a nonnative plant species.
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North of the Border: Are Nonnative Species Moving Northward As the Climate Changes?

  • Article
  • Middle School
  • 1 Classroom Period
  • Active Forest Management
  • Wildlife
  • Climate Change
  • Invasive Species
  • Latitude
  • Native Species
  • Naturalized Species
  • Nonnative Species
  • Range
Cover of the North of the Border article. The cover is a close up shot of a nonnative plant species.
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A naturalized species has two ranges. The first range is the one where the species lives in its native habitat. The second range is the one where the species is naturalized, surviving in a nonnative area without the help of humans. Species are more able to survive east to west across the globe, but are limited by latitude. The scientists in this study wanted to answer this question: Are naturalized species’ latitudinal ranges the same, larger, or smaller than their native ranges?

North of the Border: Are Nonnative Species Moving Northward As the Climate Changes?

Jump To

  • Meet the Scientist
  • Thinking About Science
  • Thinking About the Environment
  • Introduction
  • Methods
  • Findings
  • Discussion

What Kinds of Scientists Did This Research?

  • Botanist: This scientist studies plants.
  • Ecologist: This scientist studies organisms and their relationship with their living and nonliving environment.

Meet the Scientist

Qinfeng Guo

Qinfeng Guo

Ecologist

My most exciting discovery? I recently completed a study reporting the richness and distribution of invasive and other documented hybrid plants in the United States. The results show that, similar... Read Full Bio
Hong Qian

Hong Qian

Botanist | Ecologist

Botanist and Ecologist: My favorite science experience is finding out what causes different species to live in different areas worldwide. One of the most interesting questions is what causes the... Read Full Bio

Thinking About Science

As science advances over time, new scientific questions are continually discovered. Many of the scientific questions asked today would have been unthinkable even ten years ago. Every time a team of scientists learns something new, the new finding creates new questions. New technology, in addition, enables scientists to explore questions that could not have been explored in the past. The world of science, therefore, keeps expanding. Now is an exciting time to be a scientist. The future will bring even more opportunities for scientific exploration.

 


Thinking About the Environment

Plants and nonhuman animals live in a particular range, or area. Range is determined by many factors. Some of these factors include temperature, amount of rainfall, soil type, and elevation. The scientists in this research identified plant and animal species’ ranges by latitude (fig. 1).

 

A graphic of the globe with latitude lines
Figure 1. Latitude measurements are taken by observing imaginary lines on earth’s surface from the equator to the poles. Each imaginary line of latitude is numbered. These measurements enable scientists to exactly identify areas on earth between the equator and the poles. Areas close to the equator are warmer than areas close to the poles. Illustration by Samantha Bond.

 

Scientists can determine the highest and lowest latitude in which a species lives in a particular area. Areas close to the equator are warm, and areas close to the poles are cold. The average weather, or climate, affects the type of vegetation growing in an area (fig. 2). Although many factors affect the range of plants and animals, latitude is one way to define a species’ range.

 

A graphic showing the different forest that are in different temperature regions in the Northern Hempisphere
Figure 2. Tropical plants grow in areas close to the equator. Land lying farther from the equator has different types of plants. Areas with different types of plants are broadly classified as tropical, subtropical, temperate, and boreal.

 

 

Number Crunch

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Introduction

Nonnative plant and animal species live in areas where they are not naturally found. These species were brought to new areas on purpose or by mistake. Nonnative plants, for example, may have been brought to a new area on purpose to help beautify an area. Harmful insects, on the other hand, might have moved to a new area by riding on a wooden packing crate. These insects were brought to the new area by mistake. Some nonnative species live and survive in a new area without human help. Scientists call these nonnative species naturalized.

 

A nonnative species becomes naturalized by successfully competing with native species. Naturalized species compete with native species for food, water, sunlight, space, and other resources. This competition can harm native species and can change the native ecosystem. Scientists want to understand and predict the impact of nonnative species. To do this, scientists need to know where these species become naturalized.

 

A naturalized species has two ranges. The first range is the one where the species lives in its native habitat. The second range is the one where the species is naturalized, surviving in a nonnative area without the help of humans. A species’ range is limited by its ability to survive in different climates. Species, therefore, are more able to survive east to west across the globe, but are limited by latitude. The scientists in this study wanted to answer this question: Are naturalized species’ latitudinal ranges the same, larger, or smaller than their native ranges?

 

 

Reflection Section

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Methods

The scientists used databases that identify the ranges of 744 plant, bird, and mammal species. Bird and mammal species were introduced globally across different continents. Some plant species were brought from eastern Asia to the United States (fig. 3).

 

A map of the globe showing Eastern Asia and the U.S.A.
Figure 3. The scientists studied the native and naturalized latitudinal ranges of plants brought from eastern Asia to the United States. Map by Lindsay Gnann

 

The naturalized United States species included 147 bird species, 85 mammal species, and 512 plant species (figs. 4-9).

 

A cattle egret in the grass

Figure 4. Cattle egret. Photo courtesy of Joy Viola, Northeastern University, and http://www.bugwood.org.

A European Starling on the ground

Figure 5. European starling. Photo courtesy of Lee Karney, U.S. Fish and Wildlife Service, and http://www.bugwood.org.

A jackrabbit in a sandy area

Figure 6. Black-tailed jackrabbit. Photo courtesy of the U.S. Fish and Wildlife Service Archive, and http://www.bugwood.org.

Brush Tail possum on a branch

Figure 7. Common brush-tail possum. Photo courtesy of Alfred Viola, Northeastern University, and http://www.bugwood.org.

Flowering Garlic Mustard

Figure 8. Garlic mustard. Photo courtesy of Chris Evans, Illinois Wildlife Action Plan, and http://www.bugwood.org.

Kudzu leaves

Figure 9. Kudzu. Photo courtesy of James H. Miller and Ted Bodner, Southern Weed Science Society, and http://www.bugwood.org.

For each plant and animal species, the scientists recorded:

  • The northernmost latitude of the species’ native range.
  • The southernmost latitude of the species’ native range.
  • The northernmost latitude of the species’ naturalized range.
  • The southernmost latitude of the species’ naturalized range.

Because latitude is expressed in numbers, the scientists were able to calculate certain things. From the northernmost and southernmost latitudes, the scientists calculated the midpoint of the range. The scientists also calculated the extent of each species’ range. The extent is the total distance between the northernmost and southernmost latitudes.

 

The scientists wanted to know three things:

  1. Are naturalized species found in latitudes higher, lower, or the same as their native latitudes?
  2. What percentage of species’ naturalized ranges shifted toward the poles, toward the equator, or in both directions as compared with their native ranges (fig. 10)?
  3. Does a significant difference exist in the extent of naturalized ranges as compared with native ranges?

 

A graph showing the naturalized range and native ranges
Figure 10. Four ways a naturalized range could shift as compared with a native range. Illustration by Stephanie Pfeiffer.

 

 

What Makes an Observed Change Significant?

When scientists do experiments or make observations, they realize that they usually will not be able to make a conclusion for sure. In most instances, the best they can do is conclude that an observed change is not due to a chance occurrence. Depending on the number of observations and the strength of the observed changed, scientists might call an observed change significant.

 

When scientists are fairly certain that the observed change was not caused by a chance occurrence, the change is considered significant. Scientists do not just decide for themselves whether a change is
significant. Scientists use mathematical equations to determine whether a change is significant.

 

When most people say that something is significant, they mean that the event or object has a great amount of importance. When scientists say that an observed change is significant, they mean that it is very likely the change was not caused by chance.

Reflection Section

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Findings

The scientists found that the range midpoint for all species was similar for native and naturalized ranges. Of the species studied, individual plants showed the greatest similarity between their midpoints, followed by mammals and then birds. While the average midpoint might have been similar, individual bird species showed more variety in their midpoints overall.

 

In every case, however, the midpoint of the naturalized range was a bit higher than the native range midpoint (fig. 11).

 

A table with the species and degrees latitude
Figure 11. The average midpoint of the naturalized range, compared with the native range, in degrees of latitude.

 

Most species either shifted their naturalized range toward the North Pole or did not shift their range (fig. 12).

 

3 pie charts, one for each species type and a legend
Figure 12. Percentage of shifting in naturalized ranges compared with native ranges.

 

The native range extent for most species was greater than their naturalized range extent. In other words, most native species lived across more degrees of latitude than the same species living in a naturalized range (fig. 13).

 

A bar graph showing latitude and the native and naturalized areas of birds and mammals
Figure 13. The range extent was greater for species in their native ranges.

 

 

 

Reflection Section

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A mute swan in a body of water

The mute swan is a nonnative species. Photo by Jim Occi, BugPics, and courtesy of http://www.bugwood.

Chinese Violet is a nonnative species. Photo by Forest and Kim Starr, Starr Environmental, and courtesy of http://www.bugwood.


Discussion

The scientists were particularly intrigued by one of their findings. They noted that bird, mammal, and plant species showed a slight shift in the North Pole’s direction in their naturalized range. The scientists do not know why this is happening, but they have some ideas.

 

Humans might have introduced more nonnative species to higher latitudes across the United States than in lower latitudes. This introduction of more nonnative species would mean more naturalized species live in higher latitudes.

 

Another possible explanation involves climate change. Climate change has meant warmer temperatures across the United States.

 

Mammals and birds, which can easily move from place to place, may be moving north as the climate warms. Naturalized species, furthermore, may be more responsive to climate change than native species. This responsiveness may be true because naturalized species are not constrained by predators and competitors. In their native habitat, species evolve together to create a balance between predators and prey.

 

The nature of scientific study may also play a role. Newer studies of naturalized species include climate change effects. Older studies of native species’ ranges may not include climate change. It may be that newer studies of native species’ ranges would reflect a northern shift as well.

 

The findings show that when a species’ native range is large, its naturalized range is also large. If no other information is available, this finding can help scientists predict the future range of naturalizing nonnative species. In addition, the findings show that naturalized ranges are, in general, smaller than native ranges. This finding could mean that naturalized species will continue to expand their range over time.

 

The scientists believe that species’ range shift in the North Pole’s direction is important. This shift may mean that the mix of species in higher latitudes will change in the future. More naturalized species at higher latitudes will cause northern ecosystems to change. These changes will place more stress on native species, which are already under stress from climate change.

 

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Adapted from Guo, Q.; Sax, D.; Qian, H.; Early, R. 2012. Latitudinal shifts of introduced species: possible causes and implications. Biological Invasions. 14: 547–556. http://www.srs.fs.usda.gov/pubs/ja/2012/ja_2012_guo_002.pdf

PDF preview of Natural IQ Climate Change cover. The cover is a photo of a woman holding a large measuring device in a river.

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  • PDF preview of the North of the Border FACTivity.
    The question you will answer in this FACTivity is: What are general patterns, if any, between the native and naturalized ranges of 25 plant species? This FACTivity includes an extension...

    FACTivity – North of the Border

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    The question you will answer in this FACTivity is: What are general patterns, if any, between the native and naturalized ranges of 25 plant species? This FACTivity includes an extension...
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Jump To

  • Education Standards
  • Educator Guide
  • Lesson Plans
  • Education Files
  • Project Learning Tree

Standards addressed in this Article:

The Next Generation Science Standards (NGSS) are a set of K-12 science education standards emphasizing inquiry-based learning, real-world applications, and integrating engineering practices, aiming to deepen understanding of science while promoting critical thinking and problem-solving skills.
  • ESS3.C-M1
    Human activities have significantly altered the biosphere, sometimes damaging or destroying natural habitats and causing the extinction of other species. But changes to Earth’s environments can have different impacts (negative and positive) for different living things.
  • ESS3.D-M1
    Human activities, such as the release of greenhouse gases from burning fossil fuels, are major factors in the current rise in Earth’s mean surface temperature (global warming). Reducing the level of climate change and reducing human vulnerability to whatever climate changes do occur depend on the understanding of climate science, engineering capabilities, and other kinds of knowledge, such as understanding of human behavior, and on applying that knowledge wisely in decisions and activities.
  • LS2.A-M1
    Organisms, and populations of organisms, are dependent on their environmental interactions both with other living things and with nonliving factors.
  • LS2.A-M2
    In any ecosystem, organisms and populations with similar requirements for food, water, oxygen, or other resources may compete with each other for limited resources, access to which consequently constrains their growth and reproduction.
  • LS2.A-M3
    Growth of organisms and population increases are limited by access to resources.
  • LS2.A-M4
    Similarly, predatory interactions may reduce the number of organisms or eliminate whole populations of organisms. Mutually beneficial interactions, in contrast, may become so interdependent that each organism requires the other for survival. Although the species involved in these competitive, predatory, and mutually beneficial interactions vary across ecosystems, the patterns of interactions of organisms with their environments, both living and nonliving, are shared.
  • LS2.C-M1
    Ecosystems are dynamic in nature; their characteristics can vary over time. Disruptions to any physical or biological component of an ecosystem can lead to shifts in all its populations.
The Common Core Standards are educational benchmarks in the United States that outline clear expectations for what students should know and be able to do in English language arts and mathematics from kindergarten through 12th grade, aiming to ensure consistency and coherence in education nationwide.
  • Cite specific textual evidence to support analysis of science and technical texts.
  • By the end of grade 8, read and comprehend science/technical texts in the grades 6-8 text complexity band independently and proficiently.
  • Determine the central ideas or conclusions of a text; provide an accurate summary of the text distinct from prior knowledge or opinions.
  • Follow precisely a multistep procedure when carrying out experiments, taking measurements, or performing technical tasks.
  • Determine the meaning of symbols, key terms, and other domain-specific words and phrases as they are used in a specific scientific or technical context relevant to grades 6-8 texts and topics.
  • Analyze the structure an author uses to organize a text, including how the major sections contribute to the whole and to an understanding of the topic.
  • Analyze the author's purpose in providing an explanation, describing a procedure, or discussing an experiment in a text.
  • Integrate quantitative or technical information expressed in words in a text with a version of that information expressed visually (e.g., in a flowchart, diagram, model, graph, or table).
  • Distinguish among facts, reasoned judgment based on research findings, and speculation in a text.
  • Compare and contrast the information gained from experiments, simulations, video, or multimedia sources with that gained from reading a text on the same topic.
Social Studies Standards are educational guidelines outlining the essential knowledge, skills, and concepts students should learn in subjects such as history, geography, civics, and economics, aiming to provide a comprehensive understanding of societal structures, historical events, and global perspectives.
  • Global Connections
  • People, Places, and Environments
  • Time, Continuity, and Change

What Is a Natural Inquirer Journal?

Three Natural Inquirer journal covers with NI bee

 

A Natural Inquirer journal is a collection of 4-8 articles on a related science topic. Journals are written for a middle school audience, but they can also be adapted for both high school students and advanced upper elementary students. Some journals are particularly suited to high school students; you can find our grade level recommendations in the tags on the product page or by filtering journals by grade level.

Journals include:

  • Four to eight articles based on published, peer-reviewed research papers; the articles keep the research paper format (see more below) but are written in language students can understand.
  • A FACTivity for each article, which is an activity to complete after reading the article. The FACTivity helps reinforce major science concepts from the article. These activities are designed to be easy to implement, with few material requirements and options for adapting them for your audience or available resources. Some articles in a journal may have two FACTivities.
  • A short “Welcome to the journal” article about key background information and science concepts that unify the articles included in the journal
  • A glossary of new terms for each article and the introductory materials.
  • A list of related Natural Inquirer publications for each article as well as outside references.
  • Standards correlations, including Next Generation Science Standards, addressed in the articles and the FACTivities.

Journals may also include additional essays (called spotlights), other activities (like crossword puzzles or vocabulary challenges), and more.

 

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Reading Modes

Journals are available in three different formats:

  • Hard copies can be ordered from the website and shipped, all free of charge.
  • PDF versions of the printed journal can be downloaded free on the website. The PDF version directly replicates the content and layout of the printed version. You can also download individual articles as pdfs.
  • The “Read Distraction Free” option allows the individual articles to open in their own window, without the rest of the website being visible. These articles can be found under the “Articles” tab. This version allows readers to scroll to particular sections of the article using the sidebar menu on the left side of the screen. This version also has interactive Reflection Sections and Number Crunches. Students can enter their answers, submit them, and then receive the correct answers to double-check their work. Submitted answers are not saved on the website and will disappear once the window is closed.

What's in a Natural Inquirer Article?

Here, we'll go into more detail about the parts of a Natural Inquirer article and give you some ideas about how they can be used.
  1. Meet the Scientists

    This section introduces the scientists (and others) who worked on the study. In their own words, they each share a memorable science experience, a favorite research project, or something they learned during the course of their education or research.

    Use this section to:

    • Introduce kids to the variety of people who work in science
    • Introduce kids to the variety of scientific fields and give brief descriptions of science-related jobs
    • Explore ways that people interact with science every day

    Next Generation Science Standards (NGSS) applications:

    • Science and Engineering Practices
    • Crosscutting Concepts: Influence of Science, Engineering, and Technology on Society and the Natural World

    Note that specific standards for this particular journal are linked on this educator guide tab.

    Other resources:

    Many of the scientists and engineers featured in this section are also featured on our collector cards. Learn more about their work, how they got interested in their fields, and interesting projects they worked on. Cards can be printed as posters, too.

    A sample Meet the Scientists page, showing four different scientists
  2. Thinking About Science

    This section briefly describes a concept about science or scientific research. This overview can touch on topics like

    • study type (longitudinal study, quantitative vs. qualitative data),
    • behaviors of scientists (conducting literature reviews, collaborating with other specialists, replicating earlier studies),
    • the practice of science (the scientific method, engineering design, data collection, randomization, controls and variables),
    • or other aspects of science (bias, correlation vs. causation).

    Use this section to:

    • Reinforce steps in the scientific method and the process of science
    • Encourage students to think about the practice of science and what it can and cannot tell us
    • Consider the many types of scientific study and what information each type can provide

    Next Generation Science Standards applications:

    • Science and Engineering Practices
    • Life Science Disciplinary Core Ideas (depending on topic)
    • Most Crosscutting Concepts (depending on topic)

    Note that specific standards for this particular journal are linked on this educator guide tab.

    Other resources:

    You can use key words to search for other or related scientific topics on our website (e.g. “longitudinal study,” “bias,” or “sampling”).

    A sample Thinking About Science page from a recent monograph
  3. Thinking About the Environment

    This section provides a brief overview of a topic or concept in environmental/life science. The topic or concept is directly related to the research study that follows. Examples of topics include the carbon cycle, the water cycle, habitat fragmentation, phenology, biodiversity, and ecosystem services.

    Use this section to:

    • Provide important background information to help students understand the research study
    • Serve as a quick reference during reading or class instruction
    • Connect the research article with other activities or media on the same topic

    Next Generation Science Standards applications:

    • Life Science and some Earth Science Disciplinary Core Ideas (depending on topic)
    • Most Crosscutting Concepts (depending on topic)

    Note that specific standards for this particular journal are linked on this educator guide tab.

    Other resources:

    You can use key words to search for more resources on life or earth science topics on our website (e.g. “habitat,” “carbon,” or “genetics”).

    A sample "Thinking About the Environment" section from a recent monograph
  4. Introduction

    This section begins the scientific article format. Much like the published, peer-reviewed study this article is based on, the introduction provides background information for the study – what is currently known and what remains unknown. The introduction culminates in the question(s) the study hopes to answer.

    The introduction is also the first section with a Reflection Section. This section includes two or three questions to help kids reflect on what they’ve just learned in the Introduction. If they are using the online distraction-free reading mode, they can answer these questions directly on the website.

    Use this section to:

    • Review important background information that kids need to understand the study
    • Connect the study to the concepts addressed in the Thinking About Science and Thinking About the Environment sections
    • Understand research questions and hypotheses, including generating their own hypotheses given what they already know

    Next Generation Science Standards applications:

    • Life Science and some Earth Science Disciplinary Core Ideas (depending on topic)
    • Most Crosscutting Concepts (depending on topic)

    Note that specific standards for this particular journal are linked on this educator guide tab.

    Other resources:

    Use one of the guided reading lesson plans to help kids follow the format of a scientific paper.

    A sample introduction page from "Hidden in Plain Sight"
  5. Methods

    This section is the nuts and bolts of the study design – the who, what, when, where, why, and how of the research. Contained within the Methods section are usually maps of the study location or the set-up of study plots, as well as details about what data was collected and how.

    The Methods section also ends with a Reflection Section – two or three questions to help students think through what they just read. These questions are interactive on the distraction-free reading mode.

    Use this section to:

    • Show students how experiments and studies are designed and carried out
    • Explore sampling methods and randomization
    • Introduce various data collection tools (e.g. camera traps, surveys, insect collection tools, weather stations, etc.)
    • Explain bias and how studies are designed to remove bias
    • Help students gain experience with map reading

    Next Generation Science Standards applications:

    • Life Science and some Earth Science Disciplinary Core Ideas (depending on topic)
    • Most Crosscutting Concepts (depending on topic)

    Note that specific standards for this particular journal are linked on this educator guide tab.

    Other resources:

    Many Methods and Findings sections contain Number Crunches, which are simple math exercises designed to help students interact with the data from the study.

    A sample methods section of a monograph article showing a map
  6. Findings

    This section summarizes the data collected during the study. The Findings section usually includes data tables or graphs and highlights the significant data points from the study. This section often mentions statistical analysis or the use of computer programs to model or analyze the data, though these methods are only discussed generally.

    The Findings section also ends with a Reflection Section – two or three questions to help students think through what they just read. These questions are interactive on the distraction-free reading mode.

    Use this section to:

    • Have students practice reading and interpreting graphs and tables
    • Compare results between variables and controls
    • Explain the concept of statistical significance
    • Discuss how no data or negative results still provide valuable information

    Next Generation Science Standards applications:

    • Life Science and some Earth Science Disciplinary Core Ideas (depending on topic)
    • Most Crosscutting Concepts (depending on topic)

    Note that specific standards for this particular journal are linked on this educator guide tab.

    Other resources:

    Search the website for “map” or “graph” to find activities where students can practice making and reading maps and graphs.

    The beginning of a Findings section featuring a large data table
  7. Discussion

    This section concludes each article. In it, we summarize the main findings of the scientists’ study. Additionally, we present the scientists’ ideas about the limitations of their study, the big-picture impacts of their research, and the scientists’ plans for future study or action.

    The Discussion section ends with a Reflection Section – two or three questions to help students think through what they just read, especially general take-aways from the study. These questions are interactive on the distraction-free reading mode.

    Use this section to:

    • Discuss what conclusions can and cannot be drawn from the available data
    • Explain the difference between correlation and causation
    • Explore study limitations and opportunities for further study
    • Brainstorm ways the study findings could be applied to real-world situations

    Next Generation Science Standards applications:

    • Life Science and some Earth Science Disciplinary Core Ideas (depending on topic)
    • Most Crosscutting Concepts (depending on topic)

    Note that specific standards for this particular journal are linked on this educator guide tab.

    Other resources:

    Use the “Designing Your Own Study” resource page for videos of scientists discussing their own research studies. The page also includes educator resources to help students plan their own scientific studies.

    The beginning of the conclusion of "Hidden in Plain Sight"

Additional Resources on the Website

A screenshot of the product tabs for an NI monographOn the website, we pair each journal with a variety of other resources, as well. Use the tabs on the product page to browse through the following:

  • Related activities, including the FACTivity for each article
  • An “About” essay that gives some larger context for the research the scientists conducted or more information about the science topic from the journal
  • A glossary of all boldfaced terms from the journal
  • A “Scientists and Collaborators” page that lists the people involved in the studies in the journal; click on a researcher to reach their bio page and see what other articles they might be featured in
  • A “Related Content” page that lists both Natural Inquirer resources about similar topics and also outside reference materials

Article Selection and Review

Natural Inquirer partners with the USDA Forest Service, so we source research studies by Forest Service scientists that have been peer-reviewed and published in reputable journals. Some of our articles have also been created in collaboration with scientists from other Federal agencies, such as U.S. Geological Survey and the United Nations Food and Agriculture Organization, universities, and other non-profits.

All journal articles are reviewed by scientists who conducted the original research study to verify scientific accuracy. Journals are also reviewed by student editorial review boards of middle or high school students before publication. Additionally, all journals are reviewed by the Forest Service and the U.S. Department of Agriculture before publication.

A screenshot of the citation for "Lights, Camera, Tracks"Every journal article includes a citation of its source study. Many educators pair the original research paper with our article to help more advanced students learn how to read formal research papers. The journal article then serves as adapted primary literature, bridging the two articles.

Lessons

  • Questions Only Lesson Plan PDF preview
    Use Bloom’s Taxonomy and an adaptation of the “questions only” reading strategy to help students read and understand a Natural Inquirer article. Note: This lesson plan can be used with...

    Lesson Plan – Questions Only

    • Lesson Plan
    • Middle School
    • 1 Classroom Period
    • Critical thinking
    • Guided reading
    • Reading strategy
    Use Bloom’s Taxonomy and an adaptation of the “questions only” reading strategy to help students read and understand a Natural Inquirer article. Note: This lesson plan can be used with...
    • Explore Lesson Plan
    • Download Lesson Plan (PDF)
    • Explore Lesson Plan
    • Download Lesson Plan (PDF)
  • PDF Preview of the Paragraph by Paragraph Lesson Plan
    Focus student understanding of the main idea of a paragraph in each section of a Natural Inquirer article through a reading and note-taking process. This lesson plan can be used with any...

    Lesson Plan – Paragraph by Paragraph

    • Lesson Plan
    • High School
    • Middle School
    • 2-3 Classroom Periods
    • Active Forest Management
    • Agriculture
    • Carbon
    • Citizen Science
    • Engineering and Forest Products
    • Fire
    • Insects
    • Pollinators
    • Pollution
    • Recreation
    • Social Science
    • Water
    • Wilderness
    • Wildlife
    • Graphic Organizer
    Focus student understanding of the main idea of a paragraph in each section of a Natural Inquirer article through a reading and note-taking process. This lesson plan can be used with any...
    • Explore Lesson Plan
    • Download Lesson Plan (PDF)
    • Explore Lesson Plan
    • Download Lesson Plan (PDF)
  • PDF Preview of the Venn Diagram Lesson Plan
    Ask students to compare and contrast two articles using a Venn diagram. This lesson plan can be used with any Natural Inquirer article.

    Lesson Plan – Venn Diagram

    • Lesson Plan
    • High School
    • Middle School
    • 2-3 Classroom Periods
    • Active Forest Management
    • Agriculture
    • Carbon
    • Citizen Science
    • Engineering and Forest Products
    • Fire
    • Insects
    • Pollinators
    • Pollution
    • Recreation
    • Social Science
    • Water
    • Wilderness
    • Wildlife
    • Graphic Organizer
    Ask students to compare and contrast two articles using a Venn diagram. This lesson plan can be used with any Natural Inquirer article.
    • Explore Lesson Plan
    • Download Lesson Plan (PDF)
    • Explore Lesson Plan
    • Download Lesson Plan (PDF)

Education Files

Project Learning Tree

If you are a Project Learning Tree-trained educator, you may use “Invasive Species” as an additional resource.

Glossary

View All Glossary
  • average

    (av (ǝ) rij): A value that is computed by dividing the sum of a set of terms by the number of terms.

  • constrain

    (kǝn strān): To hold back by or as if by force.

  • database

    (dā tə bās): A usually large collection of data organized especially for rapid search and retrieval (as by a computer).

  • ecological

    (ē kə lä ji kəl): Of or relating to the environments of living things or to the relationships between living things and their environments.

  • elevation

    (e lǝ vā shǝn): The height above sea level.

  • evolutionary

    (e və lü shən er ē): Of, relating to, or produced by evolution. Evolution is the process of continuous change from a lower, simpler, or worse state to a higher, more complex, or better state.

  • habitat

    (ha bә tat): The place or environment where a plant or animal naturally or normally lives and grows.

  • intrigue

    (in trēg): To arouse the interest, desire, or curiosity of.

  • mammal

    (ma mǝl): Any of a class of warm-blooded vertebrates that include human beings and all other animals that nourish their young with milk produced by mammary glands and have the skin usually more or less covered with hair.

  • native

    (nā tiv): Living or growing naturally in a particular region.

  • predator

    (pre də tər): An animal that preys on other animals for food.

  • prey

    (prā): An animal taken by a predator as food.

  • tropics

    (träp iks): The region that surrounds the equator and goes from 23.5 degrees north latitude to 23.5 degrees south latitude.

  • vertical

    (vər ti kəl): Going straight up or down from a level surface.

  • Photo of Qinfeng Guo, wearing a yellow hard hat and inspecting leaves on a low branch.

    Qinfeng Guo

    Ecologist

    My most exciting discovery? I recently completed a study reporting the richness and distribution of invasive and other documented hybrid plants in the United States. The results show that, similar...
    View Profile
  • Photo of Hong Qian. He is sitting at a desk, reading a book and holding an illustration of a plant. There are other books on the desk and a microscope.

    Hong Qian

    Botanist | Ecologist

    Botanist and Ecologist: My favorite science experience is finding out what causes different species to live in different areas worldwide. One of the most interesting questions is what causes the...
    View Profile

Jump To

  • Related from Natural Inquirer
  • Additional Resources

Related Resources from the Natural Inquirer

  • Grow Where You're Planted Monograph cover.
    In “Grow Where You’re Planted,” students will learn about how different planting elevations can affect Jeffrey and ponderosa pines’ survival, growth, and bud development timing. As part of the Moon...

    Grow Where You’re Planted – Vol. 1 No. 24

    • Monograph
    • High School
    • Middle School
    • Active Forest Management
    • Apollo 14
    • Artemis I
    • Bud Development
    • Climate Change
    • Computer Model
    • Diameter at Breast Height (DBH)
    • Forest Restoration
    • Genotype
    • Jeffrey pine
    • Native Range
    • Phenotype
    • Ponderosa Pine
    • Seed Extractory
    • Seed Germination
    • Seeds
    • Smokejumper
    • Tree growth
    • Tree Survival Rates
    In “Grow Where You’re Planted,” students will learn about how different planting elevations can affect Jeffrey and ponderosa pines’ survival, growth, and bud development timing. As part of the Moon...
    • Explore Monograph
    • Download Monograph (PDF)
    • Explore Monograph
    • Download Monograph (PDF)
  • The cover of "Moving on Up" featuring a black and white close-up picture of leaves
    The scientists in this study were interested in trees that live in the Eastern United States. They wanted to explore how the habitat of these trees might change in the...

    Moving on Up: The Possible Impact of Climate Change on Forest Habitats

    • Article
    • Middle School
    • 1 Classroom Period
    • Active Forest Management
    • Wilderness
    • Carbon Dioxide
    • Fossil Fuels
    • Habiat
    • Habitat Loss
    • Seed Dispersal
    • Trees
    • Trend
    The scientists in this study were interested in trees that live in the Eastern United States. They wanted to explore how the habitat of these trees might change in the...
    • Explore Article
    • Download Article (PDF)
    • Read Distraction Free
    • Explore Article
    • Download Article (PDF)
    • Read Distraction Free

    Part Of

    Natural Inquirer - Vol. 14 No. 1


Additional Resources

  • USDA Forest Service: "Trees on the move: A scientific effort to adapt to climate change"

    When thinking of the term migration, the mind envisions seasonal bird journeys or perhaps historical human movement around the globe. However, scientists at the USDA Forest Service Northern Research Station are studying another type of migration—the movement of trees and how that relates to climate change.

    Read Article
  • Eastern Forest Threat Assessment Center Bookmarks

    View PDF’s of available bookmarks.

    Visit Website
  • Eastern Forest Threat Assessment Center Fact Sheets

    View PDF’s of available fact sheets.

    Visit Website
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  • USDA Forest Service logo.

The Natural Inquirer program produces a variety of science education materials for PreK through grade 12. Natural Inquirer products are produced by the USDA Forest Service, FIND Outdoors, and other cooperators and partners.

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