A tail of two scorpions

Ashlee & Matt Rowe

Ashlee and Matt Rowe at the Santa Rita Experimental Range in Arizona

The activities are as follows:

Animals have evolved many ways to defend themselves against predators. Many species use camouflage to avoid being seen. Others rely on speed to escape. Some species avoid capture by hiding in a safe place. Other animals use painful and venomous bites or stings to try to prevent attacks or to make being captured more difficult. Anyone who has been stung by a bee or wasp understands how stinging could be a great way to keep predators away! However, there is little research that documents if painful stings or bites deter predators.

The grasshopper mouse lives at the base of the Santa Rita Mountains in Arizona. Scientists Ashlee and Matt have been studying populations of this mouse for many years and wanted to know what the mouse ate. In the mountains, there are two scorpions that make a great food source for the mice. One of the scorpion species has a painful sting. The other species is slightly larger, but its sting is not painful. Ashlee and Matt thought that the use of a painful, venomous sting helped the smaller species avoid most predator attacks.

The Santa Rita foothills - habitat for the grasshopper mouse and scorpions

The Santa Rita foothills – habitat for the grasshopper mouse and scorpions

The scientists collected six grasshopper mice from the wild. Back in the lab, they trained the mice to expect a food reward when they tipped over a small cup containing live prey. Once trained, the mice were used in an experiment. The mice were presented with two cups to choose from. One contained the small scorpion species that has a painful sting. The other cup contained the larger scorpion species that has a painless sting. Ashlee and Matt collected data on which cup the mice chose to approach, inspect, or pursue (by tipping over the cup). They also recorded if the mice attacked or consumed the painless or painful species of scorpion. Each trial ended when the mouse finished consuming one of the scorpions. If painful stings prevent a predator from attacking, they predicted the mice would choose to eat the scorpion species with the painless sting more often.

Watch a video of one of the experimental trials:

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Mouse Trial
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Watch five additional videos on the grasshopper mouse and scorpions:

Images of the southern grasshopper mouse (Onychomys torridus) capturing and eating the painful species of scorpion (Centruroides sculpturatus).

Ot vs Cs 4

Ot vs Cs 1

Ot vs Cs 2

Size differences of the two scorpions used in the experiments (painful Arizona bark scorpion, Centruroides sculpturatus is on the left; painless stripe-tailed scorpion, Hoffmannius spinigerus on the right)size comparison 1 (1 of 1)

Featured scientists: Ashlee and Matt Rowe from University of Oklahoma

Undergraduate researchers involved with the project: Travis Tate and Crystal Niermann from Sam Houston State University; Rolando Barajas, Hope White, and Amber Suto from Michigan State University

Flesch–Kincaid Reading Grade Level = 7.1

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Increase your broader impacts with Data Nuggets! LTER ASM Meeting 2015

DSCN7466Sharing research findings with the non-science public is an important part of the science process, yet is often one of the most challenging to achieve. With broader impacts a factor in most grants, finding effective methods of transmission is key. Data Nuggets, a GK-12 initiative from the Kellogg Biological Station is a practical, high-impact solution to this conundrum. If you need to increase broader impacts for your research and want to further develop your communication skills, come to our hands-on workshop and create a Data Nugget based on your research!

Data Nuggets are targeted classroom activities that emphasize developing quantitative skills for K-16 students. They are created from recent and ongoing research, bringing cutting edge science into the classroom and helping scientists share their work with broad audiences. The standard format of each Data Nugget provides a brief background to a researcher and their study system along with a dataset from their research. Students are challenged to answer a scientific question, using the dataset to support their claim, and are guided through the construction of graphs to facilitate data interpretation.

DSCN7474We are currently seeking to add to our collection of Data Nuggets to showcase science done at LTER sites across the country. See examples of LTER Data Nuggets and learn more about our project by clicking on our LTER tag. During the workshop we will walk you through our templates for experimental and observational data, and help you identify a proper dataset, scientific question, and hypothesis for students of many ages. In order to finish a Data Nugget within the allotted time, participants must come to the workshop with a dataset already selected and analyzed.

  • Workshop info can be found here.
  • Organizers: Mary Spivey, Elizabeth Schultheis, and Melissa Kjelvik
  • Monday, August 31st – Working Group Session II

The mystery of Plum Island Marsh

Scientist, Harriet Booth, counting and collecting mudsnails from a mudflat at low tide.

Scientist, Harriet Booth, counting and collecting mudsnails from a mudflat at low tide.

The activities are as follows:

Salt marshes are among the most productive coastal ecosystems. They support a diversity of plants and animals. Algae and marsh plants use the sun’s energy to make sugars and grow. They also feed many invertebrates, such as snails and crabs, which are then eaten by fish and birds. This flow of energy through the food web is important for the functioning of the marsh. Also important for the food web is the cycle of matter and nutrients. The waste from these animals, and eventually their decaying bodies, recycle matter and nutrients, which can be used by the next generation of plants and algae. Changes in any links in the food chain can have cascading effects throughout the ecosystem.

Today, we are adding large amounts of fertilizers to our lawns and agricultural areas. When it rains, these nutrients run off into our waterways, ponds, and lakes. If the added nutrients end up in marshes, marsh plants and algae can then use these extra nutrients to grow and reproduce faster. Scientists working at Plum Island Marsh wanted to understand how these added nutrients affect the marsh food web, so they experimentally fertilized several salt marsh creeks for many years. In 2009, they noticed that fish populations were declining in the fertilized creeks.

View of a Plum Island salt marsh.

View of a Plum Island salt marsh.

Fertilizer does not have any direct effect on fish, so the scientists wondered what the fertilizer could be changing in the system that could affect the fish. That same year they also noticed that the mudflats in the fertilized creeks were covered in mudsnails, far more so than in previous years. These mudsnails eat the same algae that the fish eat, and they compete for space on the mudflats with the small invertebrates that the fish also eat. The scientists thought that the large populations of mudsnails were causing the mysterious disappearance of fish in fertilized creeks by decreasing the number of algae and invertebrates in fertilized creeks.

A few years later, Harriet began working as one of the scientists at Plum Island Marsh. She was interested in the mudsnail hypothesis, but there was yet no evidence to show the mudsnails were causing the decline in fish populations. She decided to collect some data. If mudsnails were competing with the invertebrates that fish eat, she expected to find high densities of mudsnails and low densities of invertebrates in the fertilized creeks. In the summer of 2012, Harriet counted and collected mudsnails using a quadrat (shown in the photo) and took cores down into the mud to measure the other invertebrates in the mudflats of the creeks. She randomly sampled 20 locations along a 200-meter stretch of creek at low tide. The data she collected are found below and can help determine whether mudsnails are responsible for the disappearance of fish in fertilized creeks.

Mudsnails on a mudflat, and the quadrat used to study their population size.

Mudsnails on a mudflat, and the quadrat used to study their population size.

Featured scientist: Harriet Booth from Northeastern University

Flesch–Kincaid Reading Grade Level = 10.2

Click here for a great blog post by Harriet detailing her time spent in the salt marsh: Harriet Booth: Unraveling the mysteries of Plum Island’s marshes

If your students are looking for more information on trophic cascades in salt marsh ecosystems, check out the video below!

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Salmon in hot water

Chinook salmon in Alaska.

The activities are as follows:

Pacific salmon are important members of freshwater and ocean food webs. Salmon transport nutrients from the ocean to freshwater habitats, and traces of these nutrients can be found in everything from trees to bears! Salmon also support sport and commercial fisheries, and are used for ceremonial purposes by Native Americans. Climate change poses a threat to salmon populations by warming the waters of streams and rivers where they reproduce. To maintain healthy populations, salmon rely on cold, freshwater habitats and may go extinct as temperatures rise in coming decades. Warm temperatures can cause large salmon die-offs. However, some salmon individuals have higher thermal tolerance and are better able to survive when water temperatures rise.

Eggs used in QTL experiment

Eggs used in QTL experiment

Salmon individuals and populations may be better able to survive in warmer waters because they have certain gene variants that help them survive under these conditions. Scientists want to know whether there is a genetic basis for the variation observed in salmon’s thermal tolerance. If differences in certain genes control variation in thermal tolerance, scientists can identify the location on the genome responsible for this very important adaptation. Once identified, management agencies could then screen for these genes in populations of salmon in order to identify individuals that could better survive in a future warmer environment. Hatchery programs could also breed thermally tolerant fish in an attempt to preserve this important fish species.

Scientists working in the lab

Scientists working in the lab

To identify the genes responsible for a particular trait, scientists look for Quantitative Trait Loci (QTL). A QTL is a genetic variant that influences the phenotype of a polygenic trait, such as human height or skin color, and perhaps thermal tolerance in salmon. Scientists can find QTL by conducting experimental mattings then examining the phenotypic and genetic characteristics of the offspring. In this study, parent fish from one population of salmon, some that are tolerant to warm water and some that are not, mated and produced offspring. These offspring now had a mix of genetic backgrounds from their parents, meaning that some offspring inherited genetic variants that made them more tolerant to high temperatures and some did not. Each offspring was tested for their thermal tolerances, and had their genomes sequenced. Differences in the genome between offspring that are tolerant and those that are not reveal areas of the genome that are correlated with thermal tolerance and survival in warm water. If differences in certain genes control variation in thermal tolerance, the scientists predicted they could find regions in the salmon genome that are correlated with survival in warm water.

Featured scientists: Wesley Larson, Meredith Everett, and Jim Seeb from the University of Washington

Flesch–Kincaid Reading Grade Level = 10.9

There are two scientific papers associated with the data in this Data Nugget. The citations and PDFs of the papers are below. The lab webpage can be found here.

Check out these Stated Clearly videos to explore DNA and genes with students!

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How the cricket lost its song, Part I

Screen Shot 2015-06-22 at 12.41.05 PMThe activities are as follows:

Some of the most vibrant and elaborate traits in the animal kingdom are signals used to attract mates. These mating signals include the bright feathers and loud calls of birds or the swimming dances performed by fish. Most of the time the males of the species perform the mating signals, and females use those signals to choose a mate. While mating signals help attract females, they may also attract unwanted attention from other species, like predators.
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Robin is a scientist who studies the mating signals of Pacific field crickets. These crickets live on several of the Hawaiian Islands. Male field crickets make a loud, long-distance song to help females find them and then switch to a quiet courtship song once a female comes in close. Males use specialized structures on the wings to produce songs.

One summer, Robin noticed that the crickets on one of the islands, Kauai, were unusually quiet. Only a couple of years before, Kauai had been a very loud place to work; however, that year Robin heard no males singing! After taking the crickets back to the lab, she noticed that there was something different about the males’ wings on Kauai. Most (95%) of males were missing all of the structures that are used to produce the calling and courtship songs—they had completely lost the ability to produce song! She decided to call this new type of male a flatwing male. But why did these males have flat wings?

Screen Shot 2015-06-22 at 12.29.38 PMOn Kauai, songs of the male crickets attract female crickets, but they are also overheard by a deadly parasitoid fly. The fly sprays its larvae on the backs of the crickets. The larvae then burrow into the crickets’ body cavity and eat them from the inside out! Because flatwing males cannot produce songs, flat wings may help male crickets remain unnoticed by the parasitoid flies. To test this idea, Robin dissected the males to look for fly larvae. She compared infection levels for 67 normal males—collected before the flatwing mutation appeared in the population—to 122 flatwing males that she collected after the flatwing mutation appeared. She expected fewer males to be infected by the parasitoid fly after the appearance of the flatwing mutation in the cricket population.

Featured scientist: Robin Tinghitella from the University of Denver

Flesch–Kincaid Reading Grade Level = 9.1

Additional teacher resources related to this Data Nugget include:

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Invasive reeds in the salt marsh

Culverts run under roads and allow water from the ocean to enter a marsh. Phragmites can be seen growing in the background.

Culverts run under roads and allow water from the ocean to enter a marsh. Phragmites can be seen growing in the background.

The activities are as follows:

Phragmites australis is an invasive reed, a type of grass that grows in water. Phragmites is taking over saltwater marshes in New England, or wetland habitats near the Atlantic Ocean coast. Phragmites does so well it crowds out native plants that once served as food and homes for marsh animals. Once Phragmites has invaded, it is sometimes the only plant species left! Phragmites does best where humans have disturbed a marsh, and scientists were curious why that might be. They thought that perhaps when a marsh is disturbed, the salinity, or amount of salt in the water, changes. Phragmites might be able to survive after disturbances that cause the amount of salt in the water to drop, but becomes stressed when salinity is high.

Students collecting data on the plant species present in the marsh using transects. Every 1m along the tape, students observe which plants are present. Phragmites is the tall grass that can be seen growing behind the students.

Students collecting data on the plant species present in the marsh using transects. Every 1m along the tape, students observe which plants are present. Phragmites is the tall grass that can be seen growing behind the students.

Fresh water in a marsh flows from the upstream source to downstream. Saltwater marshes end at the ocean, where freshwater mixes with salty ocean water. One type of disturbance is when a road is cut through a marsh. Upstream of the road, the marsh is cut off from the salt waters from the ocean, so only fresh water will enter and salinity will drop. Downstream of the road, the marsh is still connected to the ocean and salinity should be unaffected by the disturbance. Often, a culvert (a pipe that runs under the road) is placed to allow salt water to pass from the ocean into the marsh. The amount of ocean water flowing into the marsh is dependent on the diameter of the culvert.

Students at Ipswich High School worked with scientists from the Mass Audubon, a conservation organization, to look at the Phragmites in the marsh. They looked at an area where the salinity in the marsh changed after a road was built. They wanted to know if this change would affect the amount of Phragmites in that marsh. In 1996, permanent posts were placed 25 meters apart in the marsh. That way, scientists could collect data from the same points each year. At these posts, students used transects, a straight line measured from a point to mark where data is collected. Then they collected data on all the plants that were found every meter along the transects. Data has been collected at these same points since 1996. In 2005, an old 30cm diameter culvert was replaced with two 122cm culverts. These wider culverts allow much more salty ocean water to flow under the road and into the marsh. Students predicted that after the culverts were widened, more ocean water would enter the marsh. This would make salinity go up, making it harder for Phragmites to grow, and it would decline in numbers. Students continued to survey the plants found along transects at each permanent post and documented their findings.

Featured scientists: Lori LaFrance from Ipswich High School, Massachusetts and Liz Duff from Mass Audubon. This study was part of the PIE-LTER funded by the NSF.

Flesch–Kincaid Reading Grade Level = 9.0

To access the original data presented in this activity, and collected by students, access Mass Audubon’s Vegetation Data, available online. To access the salinity data related to this activity, and collected by students, access Mass Audubon’s Salinity Data, available online. Scroll down to “Ipswich, MA, Town Farm Road” for data from the site discussed here.

View of the two new culverts.

View of the two new culverts.

The old pipe that was removed.

The old pipe that was removed, and the new culvert.

 

 

 

Arial view of the upstream and downstream research sites.

Arial view of the upstream and downstream research sites.

Growing energy: comparing biofuel crop biomass

The activities are as follows:GLBRC1

Éste Data Nugget también está disponible en Español:

Most of us use fossil fuels every day to power our cars, heat and cool our homes, and make many of the products we buy. Fossil fuels like coal, oil, and natural gas come from plants and animals that lived and died hundreds of millions of years ago – this is why they’re called “fossil” fuels! These ancient energy sources have many uses, but they also have a major problem. When we use them, fossil fuels release carbon dioxide into the atmosphere. As a greenhouse gas, carbon dioxide traps heat and warms the planet. To avoid the serious problems that come with a warmer climate, we need to transition away from fossil fuels and think of new, cleaner ways to power our world.

Biofuels are one of these alternatives. Biofuels are made out of the leaves and stems (called biomass) of plants that are alive and growing today. When harvested, the biomass can be converted into fuel. Plants take in carbon dioxide from the atmosphere to grow. It’s part of the process of photosynthesis. In that way, biofuels can create a balance between the carbon dioxide taken in by plants and what is released when burning fuels.

GLBRC2

At the Great Lakes Bioenergy Research Center, scientists and engineers work together to study how to grow plants that take in as much carbon as possible while also producing useful biofuels. Gregg is one of these scientists and he wants to find out how much biomass can be harvested from different plants like corn, grasses, trees, and even weeds. Usually, the bigger and faster a plant grows, the more biomass they make. When more biomass is grown, more biofuels can be produced. Gregg is interested in learning how to produce the most biomass while not harming the environment.

While biofuels may sound like a great solution, Gregg is concerned with how growing them may affect the environment. Biofuels plants come with tradeoffs. Some, like corn, are great at quickly growing to huge heights – but to do this, they often need a lot of fertilizer and pesticides. These can harm the environment, cost farmers money, and may even release more of the greenhouse gasses we are trying to reduce. Other plants might not grow so fast or so big, but also don’t require as many chemicals to grow, and can benefit the environment in other ways, such as by providing habitat for animals. Many of those plants are perennials, meaning that they can grow back year after year without replanting (unlike corn). Common biofuel perennials like switchgrass, Miscanthus grass, prairie grasses, and poplar trees require fewer fertilizers and pesticides to grow, and less fossil fuel-powered equipment to grow and harvest them. Because of this, perennials might be a smart alternative to corn as a source of biofuels.

Gregg out in the GLBRC

Gregg out in the WI experimental farm.

Believing in the power of perennials, Gregg thought that it might even be possible to get the same amount of biomass from perennials as is normally harvested from corn, but without using all of the extra chemicals and using less energy. To investigate his ideas, Gregg worked together with a team to design a very big experiment. The team grew many plots of biofuel plants on farms in Wisconsin and Michigan, knowing that the soils at the site in Wisconsin were more nutrient-rich and better for the plants they were studying than at the Michigan site. At each farm, they grew plots of corn, as well as five types of perennial plots: switchgrass, Miscanthus grass, a mix of prairie plant species, young poplar trees, and weeds. For five years, the scientists harvested, dried, and weighed the biomass from each plot every fall. Then, they did the math to find the average amount of biomass produced every year by each plot type at the Wisconsin and Michigan sites.

Featured scientist: Dr. Gregg Sanford from University of Wisconsin-Madison. Written with Marina Kerekes.

Flesch–Kincaid Reading Grade Level = 8.9

This Data Nugget was adapted from a data analysis activity developed by the Great Lakes Bioenergy Research Center (GLBRC). For a more detailed version of this lesson plan, including a supplemental reading, biomass harvest video and extension activities, click here.

This lesson can be paired with The Science of Farming research story to learn a bit more about the process of designing large-scale agricultural experiments that need to account for lots of variables.

For a classroom reading, click here to download an article written for the public on these research findings. Click here for the scientific publication. For more bioenergy lesson plans by the GLBRC, check out their education page.

Aerial view of GLBRC KBS LTER cellulosic biofuels research experiment; Photo Credit: KBS LTER, Michigan State University

Aerial view of GLBRC KBS LTER cellulosic biofuels research experiment; Photo Credit: KBS LTER, Michigan State University

For more photos of the GLBRC site in Michigan, click here.

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This is a place – the importance of conducting local research

Below we have reproduced an article by Kathryn M. Flinn from Belt Magazine. The original post can be found here.

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Like many teenagers, I could not wait to leave the place where I grew up, in western Pennsylvania. There, my family often took a walk on a nearby Rails-to-Trails path that I liked to call the Trail of Ecological Destruction. This former railroad bed lined with invasive shrubs crosses creeks turned orange by acid mine drainage, passes the sewage treatment plant and the recycling center, and ends at a coal-fired power plant that releases more sulfur dioxide than any other power plant in the nation. I wanted to hike the Appalachian Trail, not this devastated landscape.

But, after years of working as an ecologist, I have come to realize that grim terrain like this holds endless ecological interest. I recently took a position as a biology professor near Cleveland, and I’m fully confident that ecological research in the immediate region can sustain a career’s worth of curiosity. But I choose to do local ecology for another compelling reason — I have found that the local, lived-in landscape actually works best as a tool for helping people discover and value the environment. I do local ecology not because it’s cheap, not because it’s convenient, but because it has unique educational value.

Any college worth its salt has a Study Abroad office. Just once, I would like to direct a student to the Study Our Home office.

Yet studying ecology in the Rust Belt clearly has a public relations problem. Students, parents, administrators, and funders often fail to understand the appeal of local ecology. Even some ecologists, with their focus on biological diversity, tend to ignore the local in favor of places seen as globally significant or simply exotic. In fact, it is surprisingly easy to earn a biology degree without once interacting with organisms in a local habitat.

Any college worth its salt has a Study Abroad office. Just once, I would like to direct a student to the Study Our Home office. After all, the word “ecology” means the study of home. We have biology courses where students spend half a semester studying the natural history of Ecuador and half a semester photographing blue-footed boobies. What might happen if students spent an equal amount of time immersing themselves in their own landscapes?

To begin to focus attention on the local landscape, I realized that I need to be able to recognize, articulate, and communicate the specific lessons of local ecology. What can students learn locally better than anywhere else? What exactly am I teaching when I teach ecology in urban wastelands, wetland restorations, the humblest of parks, or wherever is nearest to hand?

By teaching ecology in a CVS parking lot, I send the same message: This is a place worth noticing, a place of ecological interest.

One late spring, I had planned a pollination ecology lab, but no native plants were flowering yet. So I took my students to a CVS parking lot, where a hedge of ornamental quince bushes had a pink riot of flowers mobbed by bees. After some urging, they set to work with their field notebooks, hand lenses, and butterfly nets. What is the difference if I teach pollination ecology in a rainforest in Costa Rica or in a CVS parking lot? Students learn the same observation skills and pollination ecology techniques. The same ecological principles pertain. The difference is that, to get to the rainforest, students have endured a six-hour flight and likely a harrowing bus ride. They have paid thousands of dollars and donned their technical polyester zip-off pants. All of this has communicated to them that what they are about to see is worth paying attention to. By teaching ecology in a CVS parking lot, I send the same message: This is a place worth noticing, a place of ecological interest.

Holly_leaf_miner2

The first lesson local ecology teaches is: Pay attention. Once I had a 100-year-old holly tree in my urban front yard, but not until I did an assignment I had given my students did I learn about holly leaf miners. Apparently there are several species of insects whose whole life consists of making traces in holly leaves, and there are several scientists who have spent their careers figuring out this interaction. I went outside. Sure enough, my holly tree had them. Sharing the street with holly leaf miners made it look slightly different.

Last fall my students discovered a spectacularly armored wheel bug in an abandoned orchard behind a baseball field. They had no idea that something like a wheel bug could exist. Do they respect this place more, given the possibility of wheel bugs?

“Most of us are still related to our native fields as the navigator to undiscovered islands in the sea,” Thoreau wrote late in life. “We can any afternoon discover a new fruit there, which will surprise us by its beauty or sweetness. So long as I saw in my walks one or two kinds of berries whose names I did not know, the proportion of the unknown seemed indefinitely, if not infinitely, great.” In fact, no one has the least idea what is going on under our noses. Geneticist Christopher Mason and his colleagues recently reported that almost half of the DNA they found in the New York City subway system was from organisms unknown to science. The New York Times quoted Mason as saying, “People don’t look at a subway pole and think, ‘It’s teeming with life.’ After this study, they may. But I want them to think of it the same way you’d look at a rain forest, and be almost in awe and wonder, effectively, that there are all these species present.”

Is it any wonder children don’t spend enough time experiencing nature in their backyards when parents hardly credit their backyards with offering an authentic experience of the natural world?

The second lesson: There is plenty left to discover, and you can start right here. Also, what you discover might change your mind.

Deep and inchoate ideas about how people interact with nature have a surprisingly strong influence on the teaching and learning of ecology. In his book Thoreau’s Country, David Foster pointed out that when Thoreau built his cabin, the landscape around Walden Pond was extensively farmed, fenced and populated. Diana Saverin recently noted in the Atlanticthat while Annie Dillard wrote Pilgrim at Tinker Creek, she was a suburban housewife. Few people remember that Edward Abbey spent his formative years in western Pennsylvania, near the town of Home. These facts need to be emphasized because many implicitly assume that only an individual alone in the wilderness can experience nature. Is it any wonder children don’t spend enough time experiencing nature in their backyards when parents hardly credit their backyards with offering an authentic experience of the natural world?

I might walk to work on the streets of Berea, Ohio, and daydream about building a cabin in Alaska or backpacking on the Pacific Crest Trail. Of course, there’s nothing wrong with valuing wilderness or visiting Alaska. But this thinking can demean my surroundings. There are probably plants in the sidewalk cracks I can’t identify yet.

If everywhere is nature, why not turn the question around? What is the difference if I teach pollination ecology in the Costa Rican rainforest instead of the CVS parking lot? The difference, I think, is that we live here. Students buy ramen noodles at this CVS. They are complicit in the processes that led to the paving, the planting of ornamental quince bushes, and the importing of European honeybees. Whatever happens here, to the asphalt and the quinces and the bees, they need to know about it, because they have to live with it. As Thoreau exhorts in Wild Fruits, his belatedly discovered final manuscript:

Do not think, then, that the fruits of New England are mean and insignificant while those of some foreign land are noble and memorable. Our own, whatever they may be, are far more important to us than any others can be. They educate us and fit us to live here in New England. Better for us is the wild strawberry than the pine-apple, the wild apple than the orange, the chestnut and pignut than the cocoa-nut and almond, and not on account of their flavor merely, but the part they play in our education.

The landscapes where we live are the ones we are most responsible for, and they teach us about the consequences of our actions.

Thoreau does not call wild strawberries “just as interesting” as pineapples. He does not say we could learn “just as much” from our local fruits. He calls them “far more important to us” — specifically for their educational value. Local fruits and local places teach us about our roles in nature — not just as naturalists or scientists, but as parts of ecosystems. The landscapes where we live are the ones we are most responsible for, and they teach us about the consequences of our actions.

My own sense of responsibility for the landscape where I grew up burgeoned when I learned how my ancestors had participated in shaping it. In the 1790s, my great-great-great-great grandfather John McCullough bought 250 acres of forested land near Burnside, Pennsylvania, and spent the rest of his life clearing and farming it with his wife and twelve children. In 1880, his granddaughter Mollie married a logger, who also built things out of wood, especially wagons. Mollie’s brother owned a sawmill, ran a lumber company, and opened a coal mine. Through the first decades of the 1900s, her daughter and son-in-law worked for a coal company. By the 1970s, my father was growing 20 million trees a year on farmland John McCullough and his neighbors had cleared. I grew up with young forests and orange creeks because my own family had created them. By teaching local ecology, I give students a similar sense: This is the place where we live, that we have shaped and continue to shape. This is the place where our children will live.

CVS_exterior

Ecologist Josh Donlan and other advocates of rewilding — especially reintroducing large carnivores — start from the premise that “earth is now nowhere pristine.” They argue that because our actions affect every ecosystem on earth, we should claim this responsibility, and manage ecosystems intentionally. Surely there are no better case studies in how human actions shape landscapes than the landscapes where we live. Certainly, educators need to help students make global connections — when they drive across campus instead of walking, they might contribute infinitesimally to a change in the mist regime of an epiphytic orchid in a rainforest canopy in Costa Rica. Interactions with our local landscapes are simply more immediate and concrete. When I take students in western Pennsylvania to compare invertebrate communities in streams with and without acid mine drainage, they understand the results within the context of their lives. They come from old company towns. Their uncles sell mining equipment. Their neighbors work for the power plant. They mountain bike on slag piles. And they like to fish. Doing local ecology provides a direct impetus to take ownership of our home landscapes, to accept our responsibility as stewards.

This third lesson is perhaps the greatest social benefit of local ecology. It is well to cultivate adults who can pay attention and continue to learn from nature. “Those who dwell, as scientists or laymen, among the beauties and mysteries of the earth, are never alone or weary of life,” wrote Rachel Carson, who developed her sense of wonder in an industrial city near Pittsburgh. But as a society we also need citizens who take responsibility for the ways they interact with nature. This may be best learned through the intimate and practical interactions we can only have with the landscapes in which we live.

Kathryn M. Flinn is an ecologist originally from Indiana, Pennsylvania.  In August, she will move to Baldwin Wallace University in Berea, Ohio. Her website, https://kathrynflinn.wordpress.com/, has more information about her teaching and research.

Springing forward

Scientist Shaun collecting phenology data in the climate change experiment. He is recording the date that the first flowers emerge for dame’s rocket.

Sean Mooney, a high school researcher, collecting phenology data in the climate change experiment. He is recording the date that the first flowers emerge for dame’s rocket.

The Reading Level 1 activities are as follows:

The Reading Level 3 activities are as follows:

Éste Data Nugget también está disponible en Español:

Every day we add more greenhouse gases to our air when we burn fossil fuels like oil, coal, and natural gas. Greenhouse gasses trap the sun’s heat, so as we add more the Earth is heating up! What does climate change mean for the species on our planet? The timing of life cycle events for plants and animals, like flowering and migration, is largely determined by cues organisms take from the environment. The timing of these events is called phenology. Scientists studying phenology are interested in how climate change will influence different species. For example, with warming temperatures and more unpredictable transitions between seasons, what can we expect to happen to the migration timings of birds, mating seasons for animals, or flowering times of plants?

Scientists collecting phenology data in the climate change experiment. They are recording the date that the first flowers emerge for dame’s rocket.

Scientists collecting phenology data in the climate change experiment.

Plants are the foundation for almost all life on Earth. Through photosynthesis, plants produce the oxygen (O2) that we breathe, food for their own growth and development, food for animals and microbes, and crops that provide food and materials for human society. Because plants are so important to life, we need to find out how climate change could affect them. One good place to start is by looking at flowering plants, guided by the question, how will increased temperatures affect the phenology of flowering? One possible answer to this question is that the date that flowers first emerge for a species is driven by temperature. If this relationship is real, we would expect flowers to emerge earlier each year as temperatures increase due to climate change. But if flowers come out earlier and earlier each year, this could greatly impact plant reproduction and could cause problems for pollinators who count on plants flowering at the same time the pollinators need the pollen for food.

Shaun, Mark, Elizabeth, and Jen are scientists in Michigan who wanted to know if higher temperatures would lead to earlier flowering dates for plants. They chose to look at flowers of dame’s rocket, a leafy plant that is related to the plants we use to make mustard! Mark planted dame’s rocket in eight plots of land. Plots were randomly assigned to one of two treatments. Half of the plots were left to experience normal temperatures (normal), while the other four received a heating treatment to simulate climate change (heated). Air temperatures in heated plots increased by 3°C, which mimics climate change projections for what Michigan will experience by the end of the century. Mark, Elizabeth, and Jen measured the date that each plant produced its first flower, and the survival of each plant. The scientists predicted that dame’s rocket growing in the heated plots would flower earlier than those in the normal plots.

 Featured scientists: Shaun Davis from Thornapple Kellogg Middle School and Mark Hammond, Elizabeth Schultheis, and Jen Lau from Michigan State University

Flesch–Kincaid Reading Grade Level = The Reading Level 3 activity has a score of 9.2; the Level 1 has a 6.4.

Flowers of Hesperis matronalis (dame’s rocket), a species of mustard that was introduced to the U.S. from Eurasia.

Flowers of Hesperis matronalis (dame’s rocket), a species of mustard that was introduced to the U.S. from Eurasia.

Additional teacher resources related to this Data Nugget include:

  • If you would like your students to interact with the raw data, we have attached the original data here. The file also includes weather data over the course of the experiment if students want to ask and explore independent questions.

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Data Nuggets’ First Publication Out in the American Biology Teacher

We just had our first Data Nugget publication accepted to the American Biology Teacher in their January 2015 issue. We hope this paper will introduce Data Nuggets to a broader audience of teachers. Click here for a PDF!

Schultheis, E. H., and M. K. Kjelvik. 2015. Data Nuggets: Bringing Real Data into the Classroom to Unearth Students’ Quantitative & Inquiry Skills. The American Biology Teacher 77(1):19-29.