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SERC Sites and Scenes

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EQSphere invention measures greenhouse gases in cloudy, freezing waters

Friday, May 14th, 2021

by Marisa Sloan, Northwestern University

The EQSphere, a silver ball inside transparent container, with gray and blue tubes coming out of top

The silver EQSphere measures dissolved carbon dioxide and methane, potent greenhouse gases, in the Rhode River on a rainy afternoon. (Photo: Marisa Sloan/Northwestern University)

Don’t be fooled—the EQSphere™ isn’t a silver softball or a tree ornament gone rogue. It’s a spherical equilibrator invented to continuously yank carbon dioxide, methane and other gases from three feet underwater into the air to be measured in real time.

Whitman Miller, a research scientist with the Smithsonian Environmental Research Center, came up with the design with his head technician Amanda Reynolds while they were studying the effects of elevated carbon dioxide in marine ecosystems. He considers it an invention born of necessity, thanks to turbid and debris-ridden coastal waters, where it’s dangerous to deploy expensive instruments for very long.

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TEMPEST Experiment Mimics Future Storms Inside Forests

Monday, December 7th, 2020

by Aliya Uteuova

Woman standing with outstretched arms on one of four giant grey tanks, with an orange ladder propped up beneath her.

Postdoc Anya Hopple stands atop freshwater tanks for the new TEMPEST experiment. Each tank can hold 10,000 gallons of water, which will saturate forest soils to simulate heavy rainfall events. (Credit: Rick Smith)

Heavy rainfall and storm surges rank among the most common natural-weather events in the United States. They can occur in every state. They’re also one of the most widely felt impacts of climate change, making it impossible to ignore the economic and physical harm they leave in their wakes.

In a forest at the Smithsonian Environmental Research Center (SERC), scientists are working to uncover how sudden deluges could impact forests in decades to come. Called TEMPEST, the new experiment will mimic intense freshwater rainstorms and saltwater storm surges by inundating parts of the forest.

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The Hunt for Historic Graves

Friday, August 28th, 2020

by Kristen Minogue

Author’s Note: SERC is keenly interested in finding more descendants of the Sellmans, Contees, enslaved Black families, tenant farmers and others who lived and worked on what is now the Smithsonian Environmental Research Center. If you wish to be part of documenting our shared history, please send information to Kristen Minogue at minoguek@si.edu.

Split gray tombstone amid forest understory, speckled with shadows of the forest canopy

The tombstone of Thomas Francis from 1685, now split in two. (Credit: Christine Dunham)

On March 19, 1685, a major named Thomas Francis took his wife on a boating trip to visit their neighbors across the Rhode River, at a plantation called Tulip Hill in southern Maryland. He never returned. Francis drowned in a boating accident on the way back, at the young age of 42.

His tombstone bore a poetic inscription urging his family not to mourn, but to hope for a reunion after death. One snippet read: “For tho grim death thought fitt to part us here/Rejoyce & think that wee shall once appeare/At that great day when all shall Summond be.”

Fast forward to the 1850s. The field where Thomas Francis lies buried now sits near the intersection of two plantations belonging to the Contee and Sellman families. Both families rely heavily on enslaved Black families to grow wheat, corn and tobacco. Like many wealthy plantation owners, the Sellmans bury their dead in a family cemetery near the house.

Dozens of people lived, toiled and died on the land that today forms the Smithsonian Environmental Research Center (SERC). But much remains unknown about their burials. SERC staff knew that Thomas Francis’ tombstone—reportedly the oldest in Maryland’s Anne Arundel County—was on SERC property, but at least a decade had passed since anyone had seen it. Three gravestones once inside the Sellman family cemetery now sit in the nearby All Hallows Church. While small footstones and brick pavers still mark the original graves, SERC staff didn’t know how many other Sellmans lay under the site. There are rumors, but no definitive records, of where the enslaved people had their final resting place.

Today, a team of archaeologists, historians, citizen scientists and cadaver dogs is on the brink of solving the mystery.
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Repurposing Nature To Restore The San Francisco Shoreline

Friday, August 14th, 2020

by Aliya Uteuova

Four scientists in face masks on a rocky shore, with their arms outstretched to show the distance between each other

Left to right: Jeff Blumenthal, Acy Wood, Chela Zabin and Corryn Knapp do field work in Point Orient, a study site southwest from the team’s main living shorelines restoration site, Giant Marsh. (Credit: Ted Grosholz)

This is the first in a series of posts highlighting research the Smithsonian Environmental Research Center is continuing to do amid the COVID-19 pandemic, and adaptations its staff have been making in a more socially distant world. 

Along the outer coast of San Francisco Bay, rocky, wave-crashing coastline gives way to acres of reefs. As the tides retreat, castle-like formations made of sand, oyster shells and cement reveal a living shoreline.

Since 2012, the San Francisco Bay Living Shorelines Project has used a nature-based approach to reinforce the shoreline and minimize coastal erosion while restoring critical eelgrass, Olympia oysters, and tidal marsh plant habitats. As a California State Coastal Conservancy public works project, it also falls under “critical infrastructure.” This meant scientists could still do socially distant fieldwork amidst the global pandemic.

“The shoreline protection might not seem too critical in 2020, but will be critical in 2050,” said Jeff Blumenthal, a technician with the Smithsonian Environmental Research Center’s San Francisco branch, or “SERC-West.”

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How To Throw An (Almost) Zero-Waste Music Festival

Thursday, November 21st, 2019
African-American choir singing underneath a tent outside

A capella group Washington Revels Jubilee Voices, at the Chesapeake Music Festival.
(Credit: Kristen Minogue/SERC)

by Sarah Wade

This article originally appeared in the November issue of the Smithsonian’s Sustainability Matters newsletter.

One small bag that could fit into an office-sized trash can. That’s all the waste that remained after a concert with more than 300 attendees, over 50 staff and volunteers, eight performing groups and four food vendors. Surrounding it, eight recycling containers and four composting bins waited for pickup. By and large, the first Chesapeake Music Festival achieved its goal of near-zero waste, to the exhausted but happy relief of its organizers.

Months of effort went into that lone trash bag: working with vendors, buying supplies, and encouraging the public to bring their own water bottles to cut down on single-use plastics.

Part of the Smithsonian Year of Music, the Chesapeake Music Festival on Sept. 14 included performances from Don Shapelle, Jeff Holland and That West River Band, Washington Revels Jubilee Voices and other folk singers from around the Bay. But when the Smithsonian Environmental Research Center (SERC) and the Arundel Rivers Federation teamed up to hold it, they had an even loftier target: make it zero waste. Click to continue »

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What’s the Perfect Temperature
to Bake Your Soil?

Friday, November 15th, 2019
Woman and man standing in marsh; man holds up long soil core.

SERC postdoc Genevieve Noyce (left) and senior scientist Pat Megonigal hold up a soil core from SERC’s Global Change Research Wetland. (Credit: Sairah Malkin/Horn Point Laboratory)

by Kristen Minogue

Soils don’t get much credit for their work powering the environment. Even among scientists, they’re routinely overshadowed by their flashier plant neighbors. But as the planet heats up, hidden soil microbes are on the verge of giving plant growth a serious boost.

However, there’s a hiccup in the system. In a new global warming study, ecologist Genevieve Noyce discovered soils and plants are just a couple degrees out of synch.

It boils down to one crucial ingredient: nitrogen. Plants need nitrogen to grow, so it’s a major component of most fertilizers. In the absence of fertilizer, plants get their nitrogen from soil microbes. But they’re at the mercy of supply and demand. In most environments on land today, soil microbes can’t produce nitrogen fast enough to meet plant demand.

In a futuristic experiment, Noyce and her colleagues baked patches of wetland soil to see if that would change in a warmer world. Click to continue »

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High Carbon Dioxide Can Create “Shrinking Stems” in Marshes

Wednesday, September 25th, 2019

Marshes Grow Shorter, Denser Stems Under High Carbon Dioxide, Which Can Help Them Resist Sea Level Rise

by Kristen Minogue

Man in sunglasses and green T-shirt sitting in a marsh holding a measuring stick

Ecologist Meng Lu measures green blades of sedge in SERC’s Global Change Research Wetland in Maryland. Lu led a discovery that under higher carbon dioxide, sedges like these grow shorter and thinner stems. (Credit: Maria Sharova/SERC)

For most plants, carbon dioxide acts like a steroid: The more they can take in, the bigger they get. But in a new study published Sept. 25, scientists with the Smithsonian discovered something strange happening in marshes. Under higher levels of carbon dioxide, instead of producing bigger stems, marsh plants produced more stems that were noticeably smaller.

“I don’t think anybody expected this,” said Meng Lu, lead author of the new study in the journal Nature Climate Change. For years, scientists had known that carbon dioxide was bulking up the total biomass of marsh plants, so it seemed natural to think individual plants were getting bigger too. “Everyone thought, okay, [plants] increased, biomass increased, so the height, width, all should increase. But that’s not the case in a marsh,” he said.

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May The Forest Be With You—SERC’s ForestGEO Census

Thursday, August 1st, 2019

by Quinn Burkhart

We’ve known for years that many of Earth’s forests are dying out and struggling to replenish their populations. At the Forest Global Earth Observatory, or ForestGEO, scientists are attempting to get to the root of this issue. A global network of research sites and scientists, ForestGEO studies how climate change is affecting tropical and temperate forests globally. Worldwide, ForestGEO examines how forests are changing over time at 67 sites in 27 countries. This totals to about 12,000 species and six million trees. Click to continue »

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Sharks Debut on SERC Field Trip Menu

Friday, July 12th, 2019

by Kristen Minogue

Woman standing with stuffed shark, holding out plastic bits.

SERC education coordinator Karen McDonald shows the contents in a stuffed shark stomach: bits of bone, a toy turtle and plastic. (Credit: Kristen Minogue/SERC)

Move over, blue crabs. There’s a new predator in the education department. Sharks are making waves as the latest addition to field trips and engineering programs at the Smithsonian Environmental Research Center (SERC).

This spring, SERC added sharks as another station in its “Shoreline Connections” and “Exploring Nature” field trips. The education staff also created a day-long program that lets students think like scientists by planning a shark tagging expedition and designing their own shark tags.

“Most of the students and teachers and even parents don’t realize that there are sharks and rays in the Chesapeake Bay,” said Karen McDonald, director of SERC’s education center. “So this is new to them. And typically the organisms are vilified. So this is a chance for us to show their importance in the ecosystem.” Click to continue »

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Leased Farmland Hearkens Back to Smithsonian’s Agricultural Roots

Friday, June 21st, 2019

The Smithsonian Environmental Research Center stays close to its heritage by leasing land to farmers

by Stephanie Fox

Hills with rows of green crops on a misty morning

Summer farm fields on the SERC campus (Photo: Nicole Campbell)

Before the Smithsonian Environmental Research Center (SERC) became a bustling scientific center, adorned with research labs and paved roads, it was the Java Dairy Farm, run by an eccentric millionaire named Robert Lee Forrest. In 1962, Forrest passed away, leaving his 368 acres of farmland and other properties along Maryland’s Rhode River to the Smithsonian Institution. Despite some talk of selling the farm to grow the Smithsonian’s endowment, further inspection of the abandoned property revealed an ideal space for field biology and ecology studies.

Over the past 57 years since Forrest’s donation, the property has grown to 2,650 acres, 19 labs and nearly 100 researchers. The majority of the natural terrain is dedicated to studying environmental issues like nutrient pollution and climate change. But SERC also has set aside about 270 acres (three plots of land) for local farmers to lease, as a reminder of the center’s agricultural origins. Click to continue »

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Shorelines