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LTER Data Nuggets
The following Data Nuggets are written by LTER scientists and created using LTER Data.
To learn more about the ongoing collaboration between Data Nuggets and the LTER, check out our blog posts, “Data Nuggets: small activities with big impacts for students” and “LTER Data Nuggets: Breathing new life into long-term data“. If you have any questions about the research in an LTER Data Nugget, or want help accessing original datasets, please contact us or the Education and Outreach Coordinator (EOC) for that site.
Title | LTER Site | EOC & Website | Content Level | Summary | |
---|---|---|---|---|---|
![]() | All washed up? The effect of floods on cutthroat trout | Andrews Forest LTER | Kari O'Connell | 2 | Floods are very common disturbances in streams. If floods happen right after fish breed and eggs hatch, young fish that cannot swim strongly may not survive. Although floods can be dangerous for fish, they are also very important for creating new habitat. Cutthroat trout are a species of fish living in Mack Creek, which experiences occasional floods. Trout breed in the early spring, right at the peak of flooding, so scientists are collecting long-term data on this species. Will floods hurt trout populations or help? |
![]() | Trees and bushes, home sweet home for warblers | Andrews Forest LTER | Kari O'Connell | 4 | The vast coniferous forests of the Pacific Northwest provide surprisingly rich and diverse habitat types for birds. Andrews Forest is a long-term ecological research site where there have been manipulations of timber harvest and forest re-growth. This land use history has large impacts on the bird habitats found in an area. Each year since 2009, scientists have gone out and measured bird populations and habitat types. Two species of warbler, with very different habitat preferences, can give insight into how birds are responding to these disturbances. |
![]() | Streams as sensors: Arctic watersheds as indicators of change | Arctic LTER | Amanda Morrison | 3 | As the world warms from climate change, the Alaskan Arctic is heating up. This is causing permafrost, or the frozen underground layer of rock and ice, to melt. When permafrost melts, plant material that has been stored for thousands of years begins to decay, releasing carbon and nitrogen from the system. Ecologists can act like “ecosystem accountants” measuring the balance of material that goes into and out of these systems. |
![]() | Limit by limit: Nutrients control algal growth in Arctic streams | Arctic LTER | Amanda Morrison | 3 | Aquatic algae, a type of microbe that live in the water, need to take in nutrients from their surroundings for growth. Two important nutrients for algal growth are nitrogen (N) and phosphorous (P). Climate change may be altering which nutrients are limiting to algae, changing food webs in the ecosystem. |
![]() | Which tundra plants will win the climate change race? | Arctic LTER | Amanda Morrison | 3 | While you might think of the arctic tundra as a blanket of snow and polar bears, this vast landscape supports a diversity of unique plant and animal species. Climate change is altering the arctic environment. With warmer seasons and fewer days with snow covering the ground, soils are thawing more deeply and becoming more nutrient-rich. With more nutrients available, will some plant species be able to outcompete other species by growing taller and making more leaves than other plant species? |
![]() | Spiders under the influence | Baltimore Ecosystem Study LTER | Bess Caplan & Alan Berkowitz | 2 | People use pharmaceutical drugs, personal care products, and other chemicals on a daily basis. Often, they get washed down our drains and end up in local waterways. Chris knew that many types of spiders live near streams and are exposed to toxins through the prey they eat. Chris wanted to compare effects of the chemicals on spiders in rural and urban environments. By comparing spider webs in these two habitats, they could see how different the webs are and infer how many chemicals are in the waterways. |
![]() | Benthic buddies | Beaufort Lagoon Ecosystems LTER | Katie Gavenus | 2 | Arctic lagoons support a surprisingly wide range of marine organisms! Marine worms, snails, and clams live in the muddy sediment of these lagoons. Having a rich variety of benthic animals in these habitats supports fish, which migrate along the shoreline and eat these animals once the ice has left. Ken, Danny, and Kaylie are interested in learning more about how the extreme seasons of the High Arctic affect the marine life that lives there. |
![]() | The birds of Hubbard Brook, Part I | Hubbard Brook Experimental Forest | Sarah Garlick & Amey Bailey | 2 | Avian ecologists at the Hubbard Brook Experimental Forest have been monitoring bird populations for over 50 years. The data collected during this time is one of the longest bird studies ever conducted! What can we learn from this long-term data set? Are bird populations remaining stable over time? |
![]() | The birds of Hubbard Brook, Part II | Hubbard Brook Experimental Forest | Sarah Garlick & Amey Bailey | 3 | Hubbard Brook was heavily logged and disturbed in the early 1900s. When logging ended in 1915, trees began to grow back. The forest then went through secondary succession, which refers to the naturally occurring changes in forest structure that happen as a forest ages after it has been cut or otherwise disturbed. Can these changes in habitat availability, due to succession, explain why the number of birds are declining at Hubbard Brook? Are all bird species responding succession in the same way? |
![]() | When whale I sea you again? | Palmer Station Antarctica LTER | Janice McDonnell | 4 | People have hunted whales for over 5,000 years for their meat, oil, and blubber. Today, as populations are struggling to recover from whaling, humpback whales are faced with additional challenges due to climate change. Their main food source is krill, which are small crustaceans that live under sea ice. As sea ice disappears, the number of krill is getting lower and lower. Humpback whale population recovery may be limited because their main food source is threatened by ongoing ocean warming. |
![]() | Lizards, iguanas, and snakes! Oh my! | Central Arizona–Phoenix LTER | Lisa Herrmann | 3 | People have dramatically changed the natural riparian habitat found along rivers and streams. In many urban areas today, these riparian habitats are being rehabilitated with the hope of bringing back native species, such as reptiles. Reptiles, including snakes and lizards, are extremely important to monitor as they play important roles in ecosystems. Are rehabilitation efforts in Phoenix successful at restoring reptile diversity and abundance? |
![]() | Bringing back the Trumpeter Swan | Kellogg Biological Station LTER & Kellogg Bird Sanctuary | Liz Schultheis & Kara Haas | 3 | Trumpeter swans are the biggest native waterfowl species in North America. At one time they were found across North America, but by 1935 there were only 69 known individuals in the continental U.S.! In the 1980s, many biologists came together to create a Trumpeter Swan reintroduction plan. Since then the North American Trumpeter Swan survey has been conducted to measure swan populations and determine whether this species is recovering. |
![]() | Growing energy: comparing biofuel crop biomass | Kellogg Biological Station LTER & University Wisconsin-Madison GLBRC | Liz Schultheis & Kara Haas | 3 | Corn is one of the best crops for producing biomass for fossil fuels, however it is an annual and needs very fertile soil. To grow corn, farmers add a lot of chemical fertilizers and pesticides to their fields. Other crops, like switchgrass, prairie, poplar trees, and Miscanthus grass are perennials and require fewer fertilizers and pesticides to grow. If perennials can produce high levels of biomass with low inputs, perhaps they could produce more biomass than corn under certain low nutrient conditions. |
![]() | A difficult drought | Kellogg Biological Station LTER & University Wisconsin-Madison GLBRC | Liz Schultheis & Kara Haas | 2 | Biofuels are made from plants that are growing today, and are being considered as an alternative to fossil fuels. To become biofuels, plants need to go through a series of chemical and physical processes that transform the sugars into ethanol. Scientists are interested in seeing how yeast’s ability to transform sugar into fuel is affected by environmental conditions in fields, such as temperature and rainfall. They used data from a year with drought and a year with normal rainfall to determine if plants that grew under drought conditions were lower quality for ethanol production. |
![]() | Microbes facing tough times | Kellogg Biological Station LTER | Liz Schultheis & Kara Haas | 3 | As the climate changes, Michigan is expected to experience more drought. Scientists are looking into how crop mutualistic interactions with microbes may help them withstand drought periods. First they need to know how microbes are impacted by different carbon and drought conditions. |
![]() | Fertilizing biofuels may cause release of greenhouse gasses | Kellogg Biological Station LTER & University Wisconsin-Madison GLBRC | Liz Schultheis & Kara Haas | 3 | One way to reduce the amount of greenhouse gases we release into the atmosphere could be to grow our fuel instead of drilling for it. Unlike fossil fuels that can only release CO2, biofuels remove CO2 from the atmosphere as they grow and photosynthesize, potentially balancing the CO2 released when they are burned for fuel. However, the plants we grow for biofuels don’t necessarily absorb all greenhouse gas that is released during the process of growing them on farms and converting them into fuels. |
![]() | The ground has gas! | Kellogg Biological Station LTER & University Wisconsin-Madison GLBRC | Liz Schultheis & Kara Haas | 3 | Nitrous oxide and carbon dioxide are responsible for much of the warming of the global average temperature that is causing climate change. Sometimes soils give off, or emit, these greenhouse gases into the earth’s atmosphere, adding to climate change. Currently scientists figuring out what causes differences in how much of each type of greenhouse gas soils emit. |
![]() | Mowing for monarchs, Part I | Kellogg Biological Station LTER | Liz Schultheis & Kara Haas | 2 | During the spring and summer months, monarch butterflies lay their eggs on milkweed plants. Milkweed plays an important role in the monarch butterfly’s life cycle. When milkweed is cut at certain times of the year new shoots grow, which are softer and easier for caterpillars to eat. Scientists set out to see if mowing milkweed plants could help boost struggling monarch populations. |
![]() | Mowing for monarchs, Part II | Kellogg Biological Station LTER | Liz Schultheis & Kara Haas | 2 | When the scientists mowed down milkweed plants for their experiment, they changed more than the age of the milkweed plants. They also removed other plant species in the background community. Perhaps the patterns they were seeing were driven not by milkweed age, but by eliminating predators from the patches they mowed. |
![]() | Blinking out? | Kellogg Biological Station LTER | Liz Schultheis & Kara Haas | 2 | Many people have fond memories of watching fireflies blink across open fields and collecting them in jars as children. This is one of the reasons why fireflies are a beloved insect species. However, there is concern that their populations are in decline. Scientists turned to the longest-running study of fireflies known to science to see if this is the case! |
![]() | Little butterflies on the prairie | Kellogg Biological Station LTER | Liz Schultheis & Kara Haas | 2 | Many farmers are concerned with growing our food while still protecting habitat wildlife. They want to know - how can we grow food for ourselves while still providing good habitat for other species? Prairie strips are a new idea that might help both farmers and the environment. These strips are small areas of prairie that can be added to farm fields. They look like rows of flowers and grasses within a field. They create habitat for many species, like butterflies, birds, ants, and even microscopic fungi and bacteria! |
![]() | Invasion Meltdown: will climate change make invasions even worse? | Kellogg Biological Station LTER | Liz Schultheis & Kara Haas | 3 | Humans are changing the earth in many ways, including adding greenhouse gasses to the atmosphere, which contributes to climate change, and introducing species around the globe, which can lead to invasive species. Scientists wanted to know, could climate change actually help invasive species? Because invasive species have already survived transport from one habitat to another, they may be species that are better able to handle change, such as temperature changes. |
![]() | Springing forward | Kellogg Biological Station LTER | Liz Schultheis & Kara Haas | 1 & 3 | What does climate change mean for flowering plants that rely on temperature cues to determine when it is time to flower? Scientists who study phenology, or the timing if life-history events in plants and animals, predict that with warming temperatures, plants will produce their flowers earlier and earlier each year. |
![]() | Cheaters in nature – when is a mutualism not a mutualism? | Kellogg Biological Station LTER | Liz Schultheis & Kara Haas | 4 | Mutualisms are a special type of relationship in nature where two species work together and both benefit. This cooperation should lead to each partner species doing better when the other is around – without their mutualist partner, the species will have a harder time acquiring resources. But what happens when one partner cheats and takes more than it gives? |
![]() | Farms in the fight against climate change | Kellogg Biological Station LTER | Liz Schultheis & Kara Haas | 2 | Different farming practices affect the amount of carbon stored in soil, an important factor for soil health and climate change. Soil scientist Caro analyzed long-term data from a 30-year experiment at Kellogg Biological Station, comparing four land management types—including conventional farming, no-till, and cover crops—to see which ones best increase soil carbon. Her work helps identify practices that benefit both farmers and the planet. |
![]() | Fair traders or freeloaders? | Kellogg Biological Station LTER | Liz Schultheis & Kara Haas | 3 | One example of a mutualism is the relationship between a type of bacteria, rhizobia, and plants like peas, beans, soybeans, and clover. Rhizobia live in bumps on the plant roots, where they trade their nitrogen for sugar from the plants. Rhizobia turn nitrogen from the air into a form that plants can use. Under some conditions, this mutualism could break down, for example, if one of the traded resources is very abundant in the environment. |
![]() | The mystery of Plum Island Marsh | Plum Island Ecosystems LTER & The TIDE Project | David Moon | 3 | Salt marshes are among the most productive coastal ecosystems, and support a diversity of plants and animals. Algae and marsh plants feed many invertebrates, like snails and crabs, which are then eaten by larger fish and birds. In Plum Island, scientists have been fertilizing and studying salt marsh creeks to see how added nutrients affect the system. They noticed that fish populations seemed to be crashing in the fertilized creeks, while the mudflats were covered in mudsnails. Could there be a link? |
![]() | Urbanization and estuary eutrophication | Plum Island Ecosystems LTER | David Moon | 4 | Estuaries are very productive habitats found where freshwater rivers meet the ocean. They are important natural filters for water and protect the coast during storms. A high diversity of plants, fish, shellfish and birds call estuaries home. Estuaries are threatened by eutrophication, or the process by which an ecosystem becomes more productive when excess nutrients are added to the system. Parts of the Plum Island Estuary in MA may be more at risk from eutrophication due to their proximity to urban areas. |
![]() | Does sea level rise harm saltmarsh sparrows? | Plum Island Ecosystems LTER | David Moon | 3 | For the last 100 years, sea levels around the globe have increased dramatically. Salt marshes grow right at sea level and are therefore very sensitive to sea level rise. Saltmarsh sparrows rely completely on salt marshes for feeding and nesting, and therefore their numbers are expected to decline as sea levels rise and they lose nesting sites. Will this threatened bird species decline over time as sea levels rise? |
![]() | Keeping up with the sea level | Plum Island Ecosystems LTER | David Moon | 3 | Salt marshes are very important habitats for many species and protect the coast from erosion. Unfortunately, rising sea levels due to climate change are threatening these important ecosystems. As sea levels rise, the elevation of the marsh soil must rise as well so the plants have ground high enough to keep them above sea level. Basically, it is like a race between the marsh floor and sea level to see who can stay on top! |
![]() | Is your salt marsh in the zone? | Plum Island Ecosystems LTER | David Moon | 3 | Beginning in the 1980s, scientist James began measuring the growth of marsh grasses. He discovered that their growth was higher in some years and lower in others and that there was a long-term trend of growth going up over time. Marsh grasses grow around mean sea level, or the average elevation between high and low tides. Are the grasses responding to mean sea level changing year-to-year, and increasing as our oceans warm and water levels rise due to climate change? |
![]() | Marsh makeover | Plum Island Ecosystems LTER | David Moon | 3 | The muddy soils in salt marshes store a lot of carbon, compared to terrestrial dry soils. This is because they are low in oxygen needed for decomposition. For this reason they play a key role in the carbon cycle and climate change. If humans disturb marshes, reducing plant diversity and biomass, are they also disturbing the marsh's ability to sequester carbon? If a marsh is restored, can the carbon holding capacity also be brought back to previous levels? |
![]() | Invasive reeds in the salt marsh | Plum Island Ecosystems LTER | David Moon | 2 | Phragmites australis is an invasive reed that is taking over saltwater marshes of New England, outcompeting other plants that serve as food and homes for marsh animals. Once Phragmites has invaded, it is sometimes the only plant species left, called a monoculture. Phragmites does best where humans have disturbed a marsh, and scientists were curious why that might be. They thought that perhaps it was caused by changing salinity, or amount of salt in the water, after a marsh is disturbed. |
![]() | Can a salt marsh recover after restoration? | Plum Island Ecosystems LTER | David Moon | 2 | Before restoration began, it was clear the Saratoga Creek salt marsh was in trouble. Invasive Phragmites plants covered large areas of the marsh, crowding out native plants and animals. Human activity was thought to be the culprit – storm drains were dumping freshwater into the marsh, lowering salinity. In 1999 a restoration took place to divert freshwater away from the marsh in an attempt to reduce Phragmites numbers. Did it work? |
![]() | Make way for mummichogs | Plum Island Ecosystems LTER | David Moon | 4 | Mummichogs are small fish that live in tidal marshes all along the US Atlantic coast. Because they are so widespread and can be found in most streams, they are a valuable tool for scientists looking to compare the health of different marshes. The absence of mummichogs in a salt marsh is a sign that it is highly damaged. Students collected data on mummichog numbers before and after a marsh restoration. Did the restoration successfully bring back mummichogs to the marsh? |
![]() | Do you feel the urban heat? | Florida Coastal Everglades LTER | Nick Oehm | 3 | Record-breaking temperatures climb higher every year, and Florida is no exception. These extreme temperatures affect organisms of all types, including humans. Irvin wanted to see how much the heat varies across Miami and compare it to the sensor at the airport that is used to issue heat warnings. He focused on sites where people gather outside - bus stops. He also chose sites that varied in shade coverage to see how temperatures fluctuate in different environments. |
![]() | The case of the collapsing soil | Florida Coastal Everglades LTER | Nick Oehm | 4 | The Everglades are a unique and vital ecosystem threatened by rising sea levels due to climate change. Recently scientists have observed in some areas of the wetland the soils are collapsing. What is causing this strange phenomena? Sea level rise might be stressing microbes, causing carbon to be lost to the atmosphere through increased respiration. |
![]() | The carbon stored in mangrove soils | Florida Coastal Everglades LTER | Nick Oehm | 2 | Mangroves are globally important for many reasons. They form dense forested wetlands that protect the coast from erosion and provide critical habitat for many animals. Mangrove forests also help in the fight against climate change by storing carbon in their soils. The balance between how much carbon is added to the soils and how much is released might be dependent on a variety of factors, including tree size and amount of disturbance to the site. |
![]() | Are forests helping in the fight against climate change? | Harvard Forest LTER | Clarisse Hart & Katharine Hinkle | 3 | In the 1990s, scientists began to wonder what role forests were having in the exchange of carbon in and out of the atmosphere. Were forests overall storing carbon (carbon sink), or releasing it (carbon source)? To test this, they built large metal towers that stand taller than the forest trees around them and use sensors to measure the speed, direction, and CO2 concentration of each puff of air that passes by. These long term measurements can tell us whether forests help in the fight against climate change. |
![]() | A window into a tree’s world | Harvard Forest LTER | Clarisse Hart & Katharine Hinkle | 2 | Scientists are very interested in learning how trees respond to rapidly warming temperatures. Luckily, trees offer us a window into their lives through their growth rings. Growth rings are found within the trunk, beneath the bark. These rings provide a long historical record, which can be used to study how trees respond to climate change. |
![]() | Love that dirty water | Harvard Forest LTER | Clarisse Hart & Katharine Hinkle | 4 | As green spaces are lost to make room for homes and businesses, there are fewer forests and wetlands to filter our drinking water. A team of scientists used the New England Landscapes Future Explorer to study this challenge for the Merrimack River, an important river for the people of New England. |
![]() | Fertilizer and fire change microbes in prairie soil | Konza Prairie LTER | Jill Haukos | 4 | Prairies grow where three environmental conditions come together – a variable climate, frequent fires, and large herbivores roaming the landscape. However, prairies are experiencing many changes. For example, people now work to prevent fires, which allows forest species take over. In addition, land previously covered in prairie is now being used for agriculture. How do these changes affect the plants, animals, and microbial communities that inhabit prairies? |
![]() | Does more rain make healthy bison babies? | Konza Prairie LTER | Jill Haukos | 2 | The North American Bison is an important species for the prairie ecosystem. Bison affect the health of the prairie in many ways, and are also affected by the prairie as well. Each year when calves are born, scientists go out and determine their health by weighing them. This long-term dataset can be used to figure out whether environmental conditions from the previous year affect the health of the calves born in the current year. |
![]() | Trees and the city | Minneapolis-St. Paul Metropolitan Area LTER | Meredith Keller | 3 | Trees provide important benefits, such as beauty and shade. The number and types of tree species that are planted in a neighborhood can increase the benefits received from trees in urban areas. Based on her own observations, Adrienne started conversations with her colleagues about differences in urban landscapes. They conducted a study to see how social demographics of neighborhoods may be related to tree species richness and tree cover. |
![]() | Do urchins flip out in hot water? | Santa Barbara Coastal LTER | Scott Simon | 1 & 3 | Periods of unusual warming in the ocean are called marine heatwaves. During marine heatwaves, water gets 2-3 degrees hotter than normal. That might not sound like much, but for an urchin, it is a lot. The research team decided to test whether marine heat waves could be stressing urchins by looking at a simple behavior that they could easily measure - how long it takes urchins to flip back over. |
LTER Data Nuggets: Breathing new life into long-term data
The original blog post can be found on the KBS LTER website here.
Each year the KBS LTER program awards graduate students summer fellowships. Here Elizabeth Schultheis and Melissa Kjevik, now both postdoctoral researchers with Michigan State University, describe the project their summer fellowship supported.
Today it is apparent that students and the public continue to struggle when faced with data and its interpretation. When asked to make sense of data taught in their science classrooms, gathered during classroom inquiry projects, or found in the news, students are unable to connect quantitative information to explanations of the way the world works. Without exposure and practice, a large dataset or complicated graph can seem insurmountable. In collaboration with K-12 teachers, the Kellogg Biological Station (KBS) GK-12 program, BEACON, and the LTER, we created Data Nuggets to help students overcome roadblocks when working with and interpreting data.
Data Nuggets are targeted classroom activities focused on 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 background information about a scientist and their research, along with how they became interested in their research questions and system that they study. Each Data Nugget includes a real dataset for students to graph, interpret, and use to construct an explanation.

Scientist Mélanie Banville searching for reptiles in the Central Arizona-Phoenix LTER. Her and Heather Bateman’s Data Nugget, “Lizards, Iguanas, and Snakes! Oh My!”
LTER Data Nuggets
The collaboration between Data Nuggets and the LTER is a mutually beneficial fit. LTER scientists help strengthen the Data Nuggets project by increasing the diversity of data and research available to students. In turn, Data Nuggets provide an avenue for LTER scientists to share their work and findings with a broad audience of students, teachers, and fellow scientists. Sharing 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 communication and transmission is key. Researchers who create Data Nuggets must dig deep to uncover the core messages of their research and think back to the big question that got them passionate about the research in the first place. Also, by creating a Data Nugget and practicing communicating research to a 6th grader, scientists can rest assured that at their next conference they’ll be better able to discuss their work with collaborators and those outside their field!

Researcher Sam Bond taking Sediment Elevation Table measurements in Plum Island Ecosystems Long Term Ecological Research site. For more information on this research, check out Anne Giblin’s Data Nugget, “Keeping Up With the Sea Level”.
Most importantly, a great outcome of using LTER data to create Data Nuggets is that teachers and students will directly benefit from additional resources that highlight the importance of data and science in an authentic context. Activities aiming to improve quantitative skills are more effective if they’re grounded in real world situations that students can relate to. Connecting science to a student’s experiences and local ecosystems makes the content more accessible, particularly for culturally and linguistically diverse students. These connections also allow students to envision a place for themselves in science. To assist with place-based learning, each Data Nugget is categorized and searchable by the location where the study occurred, allowing teachers to connect data to their students’ environment. In this way, LTER Data Nuggets have the potential to increase interest and engagement with science and data, in both students and the public.

Robert Buchsbaum, from Mass Audubon, preparing his team for a morning of salt marsh bird surveys. Find out more about his research on the endangered Saltmarsh Sparrow in his Data Nugget, “Does Sea Level Rise Harm Saltmarsh Sparrows?”
Working with LTER Scientists and Educators
This past summer (2015), we received support from the LTER Summer Fellowship program. This support allowed us to continue our work with Data Nuggets, and to strengthen their connection to the vast stores of data available through the LTER, including the KBS site and the other 24 sites in the LTER Network. While the LTER Network has conducted over three decades of amazing research, spanning diverse ecosystems and taxa, LTER education and outreach specialists are still finding creative new ways to share this important research with the public. Data Nuggets can breath new life into long-term
datasets, opening them up to the public and future scientists. These funds were used to support training workshops at the LTER All Scientists Meeting (ASM) in Estes Park, CO in August and at KBS in July. These two workshops supported early and late career scientists (graduate students, postdocs, faculty, and REUs) and many LTER education and outreach specialists looking to broaden the impact of the LTER’s research and improve their communication skills. In addition, at the LTER ASM we participated in a poster session to reach out to those who were unable to attend our workshop. Our outreach efforts strengthened the connection between Data Nuggets and the LTER, and resulted in the creation of nine (and counting!) new Data Nuggets based on LTER research. Additionally, in August, we spoke to the teachers working with the KBS K-12 Partnership, connecting them with the LTER Data Nuggets and the vast pool of LTER data, freely available online.
When reflecting back on this summer, it was so great to work with a diversity of LTER scientists across the network. We enjoyed learning new science stories and are very happy to now include coastal, urban riparian, and other ecosystems in the Data Nuggets collection. Please feel free to contact Melissa or Elizabeth if you would like more information or to get started creating your own Data Nugget! For a list of all the Data Nuggets created by LTER scientists and outreach leaders, click here!
Increase your broader impacts with Data Nuggets! LTER ASM Meeting 2015
Sharing 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.
We 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
Farms in the fight against climate change

The activities are as follows:
- Teacher Guide
- Student activity, Graph Type A, Level 4
- Student activity, Graph Type B, Level 4
- Student activity, Graph Type C, Level 4
- Grading Rubric
Carbon, when it is found in the soil, has a lot of benefits. Soil carbon makes water more available to plant roots, supports microbes and insects, helps water move through the soil and not flood at the surface, and holds on to critical nutrients for plants, like nitrogen and phosphorus. It is a key measure of soil health used by farmers.
The more carbon stored in soils, the less that ends up in our atmosphere as greenhouse gas, which contributes to climate change. Farming practices that increase soil carbon are a double benefit – they help crop plants grow and produce more return for farmers, while also helping to fight climate change.
Yet, accumulating carbon in the soil is a slow and mysterious process. It can take decades to see greater levels of carbon in most agricultural soils. Farmers need information about which farming practices reliably and continually increase soil carbon.
Caro is a soil scientist working with farmers to figure out how they can increase carbon in their soils. Her passion for soils brought her to the Kellogg Biological Station. This site is very special because it houses the Long-Term Ecological Research Program, which has been running the same experiment since 1989! When the study began, the soils were the same across the site. But, after decades of different treatments taking place in research plots, a lot has changed above and below ground.

In 2013, a team of scientists worked to sample soil carbon at this site, 25 years after the experiment began. The team processed the samples to determine the percent, by weight, of each soil sample that is made up of carbon. This is called % soil carbon. They collected samples from 4 different treatments, each with 6 replicate plots:
(1) Conventional: plots grown in a corn soybean-wheat crop rotation. The soil in these plots is tilled during spring, meaning they are disturbed and turned over. These plots represent how agriculture is conventionally done in the area with standard chemical inputs of fertilizer, herbicides, and pesticides.
(2) No-till: plots that are grown in the same way as conventional, but with one key difference. The soil in these plots is not tilled, meaning it has been undisturbed for 25 years at the time of sampling.
(3) Cover crops: plots grown similarly to conventional, with a few key differences. First, cover crops were added. Cover crops are plants that are planted alongside crops or at times of the year when the main crop is not growing. This means the soil has living plant roots year-round, not just during the season with crops. Second, this treatment had no chemicals added; all nutrients came from the addition of manure. These plots were tilled.
(4) Not farmed: non-agricultural plots growing in a diverse mix of plant species. Plots are unmanaged, but are sometimes burned to keep out woody species.
These 4 treatments represent different ways that land can be managed. The goal of the study was to see how different types of land management had changed % soil carbon over time. When Caro came to KBS in 2018, she was excited to see such a cool dataset waiting to be analyzed! She thought that keeping the soil undisturbed and having living roots in the soil for more of the year would increase soil carbon over time. This led her to predict that she would see higher % spoil carbon in the cover crop and no-till treatments, compared to conventional.
Featured scientist: Caro Córdova from University of Nebraska-Lincoln and the W. K.
Kellogg Biological Station Long Term Ecological Research Program.
Flesch–Kincaid Reading Grade Level = 4.1
Additional teacher resources related to this Data Nugget:
The results from this study are published in Geoderma, and the article is available online.
Table 2 in the paper matches the dataset that students are working with in this activity.
• https://doi.org/10.1016/j.geoderma.2024.117133
If students want to read more about this paper, there is a blog post summarizing the study:
• https://lter.kbs.msu.edu/2025/02/long-term-study-reveals-best-practices-for-building
soil-carbon-in-agricultural-soils/
The full dataset is also available online in the Dryad Digital Repository. Read me file has lots of details about variables measured and the different cropping systems studied. The first tab of the spreadsheet contains the data used in this activity, plus many more variables and treatments that students can explore to ask new questions!
• https://datadryad.org/dataset/doi:10.5061/dryad.1rn8pk0x1
More information on Regenerative Agriculture from MSU here:
• https://www.canr.msu.edu/regenerative agriculture/uploads/Regenerative%20Agriculture%20One%20Pager-AA.pdf
These data are part of the Kellogg Biological Station Long Term Ecological Research Program (KBS LTER). To learn more about the KBS LTER, visit their website:
• https://lter.kbs.msu.edu
Data Nuggets awarded the Huxley from the Society for the Study of Evolution

The SSE T. H. Huxley Award Committee has announced the winner of the 2025 T. H. Huxley Award, Dr. Elizabeth Schultheis, Education and Outreach Coordinator for the Kellogg Biological Station Long-Term Ecological Research Program at Michigan State University, for her collection of educational resources called “Data Nuggets”. Data Nuggets, which are developed in collaboration with Dr. Melissa Kjelvik, bring real data and scientific role models into the classroom to build quantitative and critical thinking skills.
As part of the award, Dr. Schultheis will receive funding to present her work at the National Association of Biology Teachers (NABT) conference in October.
The T. H. Huxley Award is administered by the T. H. Huxley Award Committee, a subset of the SSE Education and Outreach Committee.
Science Doesn’t Stop in the Winter!
When the days grow shorter and the landscape is blanketed in snow, it might seem like nature has gone dormant. Trees stand bare, ponds freeze over, and many animals disappear from sight. But winter is a critical time for many species. Researchers brave the cold to study how organisms survive and even thrive in winter’s harsh conditions.
For many species, winter isn’t an obstacle—it’s a necessity. Some organisms have evolved incredible adaptations to endure the cold. Insects use snow as an insulating blanket and even plants rely on winter conditions, with some seeds requiring a cold period before they can sprout.
But winter isn’t what it used to be; Climate change is altering seasonal patterns, leading to shorter, warmer winters. These changes disrupt the delicate balance that many species depend on. Snow cover is disappearing earlier, and fluctuating temperatures cause unpredictable freeze-thaw cycles, which can be harmful to plants and animals alike.
Postdoctoral researcher associate Rosemary Martin (Rosie) studies how cold temperatures affect the development of organisms, particularly dragonfly larvae. These larvae spend their early lives underwater before emerging as winged adults, and rather than hibernating in winter, they remain active. Understanding how temperatures shape their development is crucial, especially as climate change alters seasonal temperature patterns.
To investigate this, Rosie and her colleagues conduct lab experiments with six species of dragonflies. They expose them to different pre-winter temperatures before placing them in bio chambers at 4°C—mimicking the temperature of water beneath the ice. By measuring metabolic rates and analyzing fat and protein levels, they aim to uncover how different pre-winter conditions influence their health and survival. If larvae grow faster or slower due to higher pre-winter temperatures, it could impact the entire food web, from the predators that rely on dragonflies to the insects they eat.
“They actually stay active through the winter,” Rosie explains. “You can imagine how having built up resources—and still burning through them during the winter—affects their body condition in the spring. That’s what we’re trying to understand.”
Despite the cold temperatures, Rosie notes that “this is the part that I enjoy the most. […] Part of the reason I got into winter ecology is because I wanted an excuse to get outside into the field all year round.” Winter ecology does come with its unique challenges though. It is often understudied as it doesn’t line up with the usual academic schedule. “There’s also the danger of working on ice,” Rosie mentioned, “especially during the shoulder seasons when it’s less stable. And, of course, a lot of people just don’t think about winter as a biologically active season. […] But in these mid-latitude to high-latitude environments it is obviously a really impactful environmental filter.”
One surprising fact Rosie often shares is that many people don’t realize dragonflies have an aquatic stage at all. “First, I have to explain that, and then I get to the fact that they’re active through the winter—which surprises not just the general public but even some ecologists.”
A Data Nugget on Rosie’s research will be published shortly!
Getting Students Involved in Winter Science
For educators or students interested in exploring winter science, Rosie offers creative ideas. “If you have access to a refrigerator—and don’t mind keeping live insects in there—it can serve as a great proxy for an aquatic winter environment at 4°C,” she suggests. A mini bio chamber with LED lights and a timer can simulate winter conditions.
For those exploring the outdoors, Rosie recommends digging under the snow to examine leaf litter insects. “Try warming them up and see how long it takes for them to resume activity—that can give you insights into their overwintering strategies!” Other ideas include observing animal tracks, studying winter-active birds, and comparing how different types of trees handle the cold.
Bringing Winter Science to Your Classroom With Data Nuggets
Winter offers countless opportunities to engage students in real-world science. Data Nuggets provides resources to explore seasonal changes, including lessons on:
- How road salt affects freshwater ecosystems
- The importance of snow cover for insect survival
- How climate change is shifting winter conditions
- How animals adapt to survive freezing temperatures
These lessons use real data collected by scientists, allowing students to analyze patterns and draw their own conclusions. By bringing winter science into the classroom, you can help students see that research doesn’t stop when the temperature drops—it simply takes on a new form.
So, this winter, bundle up and explore the science happening all around you! Whether it’s tracking animal footprints in the snow, investigating how ice forms, or analyzing real-world data, there’s no shortage of discoveries waiting to be made.
External Links:
Microbes facing tough times

The activities are as follows:
- Teacher Guide
- Student activity, Graph Type A, Level 3
- Student activity, Graph Type B, Level 3
- Student activity, Graph Type C, Level 3
- Grading Rubric
As the climate changes, Michigan is expected to experience more drought. Droughts are periods of low rainfall when water becomes limiting to organisms. This is a challenge for our agricultural food system. Farmers in Michigan will be planting crops into conditions that make it harder for corn, soybean, and wheat to grow and survive.
Scientists are looking into how crop interactions with other organisms may help. Microbes are microscopic organisms that live in soils everywhere. Some microbes can help crops get through time times. These beneficial microbes are called mutualists. They give plants nutrients and water in exchange for carbon from the plant. Microbes use the carbon they get from plants as food. If plants are stressed and don’t have any carbon to give, microbes get carbon from dead plant material in the soil.
Jennifer is a biologist studying the role of microbes in agriculture. She has always been interested in a career that would help people. As a student, Jennifer thought she would have a career in politics. Along the way, she learned that a career in science is a great way to study questions that may lead to solutions for the challenges we are facing today. Jennifer was drawn to the Kellogg Biological Station, where she joined a team of scientists studying the impacts of climate change and drought on agriculture.
Jennifer and other scientists set out to test ways that we can give mutualists in the soil a boost. She thought, perhaps if we were to give microbes more food, they would be less stressed during a drought and would be able to help out crops growing in these stressful conditions.
To test this idea, Jennifer needed to test how well microbes were doing under different carbon and drought conditions. First, she set up treatments in soybean fields to manipulate the amount of carbon in the soil. She set up control plots where she left the soil alone. She also set up carbon treatment plots where dead plant litter was added to the soil to increase the carbon available to microbes.
Next, Jennifer manipulated the availability of water in her plots to test the microbes under stress. To do this, she set up her plots under shelters that kept out rain. The shelters had sprinklers, which were automated to add specific amounts of water to the plots. This design allowed Jennifer to control the watering schedule for each plot. One shelter treatment was a control, where water was added to the plots every week. This is similar to the schedules of local farmers who add water through irrigation. The other shelter treatment was drought, where plots received no water for six weeks. This experiment was replicated 4 times, meaning there were 4 shelters on the control watering schedule and 4 shelters that were under drought conditions.

Finally, Jennifer had to measure how the microbes were doing in each treatment. She did this by measuring their enzyme activity. Enzyme activity is a measure of how active the microbes are. The higher the enzyme activity, the happier the microbes are. To measure this, Jennifer collected soil samples from each plot throughout the growing season and took them to the lab to measure enzyme levels in the soil samples. These enzymes are made by microbes when they are active. She then calculated the mean of all her samples for each treatment combination.
Jennifer predicted two things. First, if drought is harmful to microbes, then she would expect to see lower enzyme activity in the drought treatment compared to the irrigated treatment. Second, if adding carbon to the soil is a way to help microbes overcome the challenge of drought, she expected higher enzyme activity in the plots with plant litter added compared to the control treatment. Both of these taken together would indicate that drought is stressful for microbes, but we can help them out by adding resources like plant litter to soils.
Featured scientist: Jennifer Jones (she/her) from the Kellogg Biological Station Long Term Ecological Research Site. Written with Melissa Frost and Liz Schultheis.
Flesch–Kincaid Reading Grade Level = 8.2
Additional teacher resources related to this Data Nugget:
To introduce this Data Nuggets activity, students can watch a talk by Jennifer when she made a classroom visit to share her background and research interests. This video is a great way to introduce students to scientist role models and learn more about what a career in science looks like, as well as get an introduction to the themes in the research.
There is also a video of Jennifer and her scientist colleague, Grant Falvo, out in the field talking about their research under the rainout shelters.
For more information about the rainout shelter experiment, students can watch this short video featuring Jennifer Jones and another scientist on the team, Grant Falvo:
These data are part of the Kellogg Biological Station Long Term Ecological Research Program (KBS LTER). To learn more about the KBS LTER, visit their website.
Do you feel the urban heat?
The activities are as follows:
- Teacher Guide
- Student activity, Graph Type A, Level 3
- Student activity, Graph Type B, Level 3
- Student activity, Graph Type C, Level 3
- Grading Rubric
Record-breaking temperatures climb higher every year, and Florida is no exception. In Florida, the impact of climate change is felt mostly during the hurricane season. Storms are becoming more violent and show up earlier in the season. These extreme temperatures and weather events affect living organisms of all types, including humans. Outdoor workers, the elderly, and all people who lack adequate housing are susceptible to temperature changes in the environment.
Irvin teaches science at a high school in Miami, Florida. On his way to work, he listens to a local radio station to catch up on the news. One day the radio hosts were talking about an increase in homelessness in Miami and other cities. They also brought up the record heat that the U.S. was experiencing and how this may affect those without homes. This conversation on the radio made Irvin think. He reflected on the impact that such high heat could have on individuals who sleep without air conditioning.
This inspired Irvin to learn more about what could be done to mitigate the impact of climate change in his city. Irvin joined a program that invites teachers to work in scientists’ labs in the summer to gain research experience. Irvin was matched with Tiffany, a scientist interested in how urban heat can change based on structures like concrete buildings, urban dwellings, and unshaded places. Irvin took this opportunity to explore how high temperatures in Miami affect the daily lives of people living there. First, Irvin started looking into how temperatures are reported in Miami. He learned that there was just a single sensor stationed at the nearby airport. The heat and humidity readings from this one sensor are used by local officials to alert the entire city about dangerous heat levels. Alerts are issued when the heat index reaches 108 degrees Fahrenheit or higher. Heat index is a value that represents how the body feels temperature when humidity is factored in. With these alerts, people can take action by spending less time outside.
Irvin realized that no matter how reliable the sensor at the airport is, there is likely a larger range of temperatures within the city. He wanted to know whether the temperatures at the airport were similar to the heat felt at places where people spend time outside.
Tiffany’s research team had already started to collect temperature data in urban places where they hadn’t been recorded before. Since 2018, her lab placed hundreds of small heat sensors around the city. The sensors go out for 3 months and then the team collects them, records their data, and places them back out into new areas of the city.
Irvin wanted to compare areas that varied in coverage from the sun. He focused on sites where people gathered and spent long periods of time outside – bus stops. Some of the sites he chose had shade from trees, some had a roof providing partial sun cover, and other sites were totally exposed with no shade. Irvin took photos of each bus stop and used them to classify all sites as either full coverage, partial coverage, or no coverage. He used data from the airport as a control comparison to his bus stop sites.
Featured scientists: Irvin E. Arce (he/him) and Tiffany Troxler (she/her) from Florida International University
Flesch–Kincaid Reading Grade Level = 9.6

Little butterflies on the prairie
The activities are as follows:
- Teacher Guide
- Student activity, Graph Type A, Level 2
- Student activity, Graph Type B, Level 2
- Student activity, Graph Type C, Level 2
- PowerPoint of images
- Grading Rubric
Butterflies are insects with colorful wings. You will often see them in a field, flying from flower to flower. Butterflies eat a sugary food made by flowers, called nectar. In return, the butterflies help the plants make seeds by moving pollen. As they travel from flower to flower, pollen is dropped off. This helps plants reproduce and make seeds. This is called pollination, and butterflies are pollinators. We need pollinators to grow many of the fruits and vegetables that we eat!
Prairies are habitats filled with many types of flowers. The Midwestern United States used to be covered in prairies. Today, most have been replaced by farm fields. Crops like corn and soybeans are commonly planted in the Midwest. Farm fields are important because we need land to grow our food. But this also means there is less food and habitat for butterflies.
Many farmers are concerned with growing our food while still protecting habitat for butterflies and other species. They want to know – how can we grow food for ourselves while still growing flowers for butterflies? A group of scientists in Michigan is working with farmers to think of solutions. The team is made of people from many different backgrounds and work experiences. The members of the team change over time, but typically 8 scientists are working together at a time. They all come together to brainstorm and do their research at the Kellogg Biological Station in Michigan.
Prairie strips are a new idea that might help both farmers and the environment. These strips are small areas of prairie that can be added to farm fields. They look like rows of flowers and grasses within a field. They create habitat for many species, like butterflies, birds, ants, and even microscopic fungi and bacteria! Prairie strips may also help our food grow better by providing habitat for pollinators.
To figure out if prairie strips are able to draw in butterflies, the research team needed to collect data. They visited a large experiment that had many different kinds of farm fields. Some of the fields had prairie strips, while others did not. They thought prairie strips would help butterflies by adding habitat for them in farm fields that usually don’t have many flowers. They predicted they would see more butterflies in fields that have prairie strips and fewer in fields without these strips.
To count the butterflies in each type of field, the team went out on sunny spring and summer mornings when butterflies were flying around and eating nectar. They walked along the same paths in the same fields at the same time every week. Each time, they counted all the butterflies they saw within 5 meters. Each walk was 12 minutes long and followed a 150-meter path. They did these counts in 6 farm fields without prairie strips and 6 farm fields with prairie strips. The team counted butterflies like this 20 times over the summer. At the end of the summer, they added up all of the butterflies observed in each field. This number is called butterfly abundance.
Featured scientists: The Haddad Lab from Kellogg Biological Station Long Term Ecological Research Program – KBS LTER
Flesch–Kincaid Reading Grade Level = 7.3
