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The Tiny Snails That Shape Seagrass Wasting Disease

Friday, May 9th, 2025

by Taylor Wev

Closeup of two snail shells, one much smaller than the other, against a black background
Lacuna snails, a group of snails more common on eelgrass infected with seagrass wasting disease (Credit: Carmen Ritter)

Seagrass meadows play a vital role in protecting the health and integrity of coastal communities around the world. However, some coastal seagrass meadows can be prone to collapse due to seagrass wasting disease. A study in the journal Ecology looked at the disease in meadows of eelgrass (Zostera marina) along the Pacific Coast of North America. It revealed that a key driver may be one of the grasses’ closest animal companions.

“Eelgrass is a very widespread and important habitat all over the Northern hemisphere,” said Emmett Duffy, marine biologist at the Smithsonian Environmental Research Center (SERC). Duffy coauthored the study as part of his work leading the Marine Global Earth Observatory network.

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Local Women’s Voices Often Missing in Marine Protection

Tuesday, May 6th, 2025

by Erin Minor

A woman in a red shirt stands on a wooden blue canoe, with a mangrove shoreline behind her. She is holding a wound up fishing net in her hands.
A woman unwinds her fishing net beside a mangrove shoreline. (Credit: Patricia from East End, Roatán, Honduras. Photo courtesy of Sara Bonilla Anariba)

Worldwide, an estimated 600 million people at least partially depend on fisheries and aquaculture for their livelihoods. This makes marine conservation important not only to protect vulnerable species and ecosystems, but to ensure these communities have sustainable food and income. However, when creating marine protection plans, local women are often left out of the conversation, causing valuable information to go unheard.

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Hotter Temps Trigger Wetlands To Emit More Methane as Microbes Struggle To Keep Up

Wednesday, April 23rd, 2025

by Kristen Goodhue

A young man with dark hair and glasses crouches on a green, grassy wetland while smiling at the camera. An array of infrared lamps is behind him.
Jaehyun Lee collects a porewater sample in the SMARTX experiment, at the Smithsonian Environmental Research Center in Maryland. (Credit: SERC)

Rising temperatures could tip the scale in an underground battle that has raged for millennia. In the soils of Earth’s wetlands, microbes are fighting to both produce and consume the powerful greenhouse gas methane. But if the Earth gets too hot, a key way wetlands clamp down on methane could be at risk, according to a Smithsonian study published April 23.

Methane is responsible for roughly 19% of global warming, according to the National Oceanographic and Atmospheric Administration. And while wetlands are champions at removing carbon dioxide (CO2)—the more abundant greenhouse gas—they are also the world’s largest natural source of methane. As nations set targets to bring down methane emitted from human activity, it is crucial to understand how much methane wetlands emit naturally—and how much more they could emit in the future.

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Bob Gallagher, Executive Officer and Environmental Steward (1954-2020)

Friday, April 11th, 2025
A man in a dark blue button-up shirt stands beside a woman wearing a red and black sweater and a necklace of Christmas lights, both smiling.
Bob Gallagher (left) with former SERC safety officer Liza Hamill at a SERC holiday party in 2018. (Credit: Tami Huber)

by Kristen Goodhue

This is the first of two In Memoriam tributes, honoring two long-time staff members who passed away while still employed at our center over the last decade. As the Smithsonian Environmental Research Center enters its 60th year, we recognize that many of our achievements would not have been possible without their hard work and passion.

The invisible handprints of Bob Gallagher cover more than half the buildings at the Smithsonian Environmental Research Center. They’re also present in the center’s most popular volunteer program, and some buildings that have yet to be constructed. From 2004 until his death in 2020, Gallagher served as the center’s executive officer. And the campus as it is today would not exist without his efforts.

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Biodiverse forests grow faster – and absorb more carbon

Wednesday, April 9th, 2025

by Erin Minor

Aerial view of a mostly green forest with some autumn colors, overlooking a blue river in the background.
A drone image of the BiodiversiTREE plots at the Smithsonian Environmental Research Center, surrounded by the larger, older forest. (Credit: Mickey Pullen)

Forests play a vital role in absorbing carbon dioxide from the atmosphere. Worldwide, roughly 10 million hectares of forest are lost to deforestation each year. Forest restorations—efforts to regrow forests—offset around half of that. But how do we make sure that these efforts are as efficient as possible? One answer is in planting a wide variety of tree species.

A new study from the Smithsonian Environmental Research Center (SERC) has found that forests planted with multiple tree species are more efficient than those with just one.

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3 Animals Helping Us Track Plastic Pollution in the Ocean

Monday, March 17th, 2025

by Erin Minor

A one-legged bird with a black head, orange beak, brown wings and white belly stands on a beach, its leg and leg stump tangled in yellow plastic netting.
An American oystercatcher stands on the beach of the Elqui River in Chile. There is plastic netting tangled around one of its legs and it has lost the bottom part of the leg. (Credit: Pedro Valencia)

Plastic pollution in our ocean is growing daily. Scientists estimate 12 million U.S. tons of plastic enter the ocean every year, and it makes up 80% of all marine debris.

How can we hope to keep track of this vast amount of plastic, or detect any useful patterns to help get it under control? One way is to collect plastic samples using animals. Marine animals ingest plastic that has broken off from plastic trash and ends up in the ocean. Scientists can then measure how much of this plastic has accumulated in the bodies of these animals. Scientists have used this method for decades.

“Sampling microplastics can be challenging and expensive,” said Martin Thiel, a marine biologist at the Smithsonian Environmental Research Center (SERC). Thiel co-authored an article in Environmental Science Advances reviewing how scientists around the world use animals to study ocean plastic. Using animals, he said, allows scientists to more efficiently collect data. “It can tell us not only how many plastics are in the environment, but how the organisms are affected by this type of pollution.”

Here are some of the most popular animals scientists use for plastic pollution research.

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Hot Moments: Predicting the Unpredictable in Coastal Wetlands

Wednesday, September 25th, 2024

by Cole Johnson

Five tall, clear, cylindrical chambers from the hot moments experiment stand in the foreground on a field with gray gravel, with green sedges growing inside them. In the back, similar chambers stand beside a white tent.
Open-top chambers in the “hot moments” experiment, where scientists are growing wetland plants exposed to extreme events and measuring greenhouse gases. (Credit: Kristen Goodhue)

Coastal wetlands are vital to our planet’s health. They store carbon, filter nitrogen and protect our shorelines. But they also can emit large pulses of greenhouse gases into the atmosphere, in sudden events known as “hot moments.” These fleeting events are challenging to predict. However, understanding them is crucial in humanity’s fight against climate change.

Genevieve Noyce, a senior scientist at the Smithsonian Environmental Research Center (SERC), is leading an innovative project to better understand these hot moments in coastal wetlands.

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Student Scientists Help Conserve Orchids with ‘Classroom Cultivation’

Wednesday, September 18th, 2024

by Kristen Goodhue

Two Classroom Cultivation students stand beside a black, rectangular container of soil with three green seedlings. One of the students has their hands just above the soil.
Students at Gwynn Park Middle School plant orchid seedlings as part of the Classroom Cultivation project. (Credit: Gwynn Park Middle School)

What does it take to grow an endangered orchid and bring it back to the wild? This past school year, the Smithsonian decided to ask hundreds of middle and high school students. It’s part of a participatory science project called “Classroom Cultivation,” run by the Smithsonian Environmental Research Center (SERC) and Smithsonian Gardens. Its goal: Turn students into scientists and classrooms into botany labs.

Orchids are some of the trickiest plants to grow—either in a lab or in the wild. This is largely because they are so frustratingly picky about their habitats. And every species has a different wish list.

“Orchids can be a bit of a drama queen, a diva,” said Shatiyana Dunn, who runs Classroom Cultivation for SERC. “They have very specific elements that they like to grow in.”

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Hot, Fresh & Flooded: These Are the Wetlands Spewing Out the Most Methane

Friday, September 6th, 2024

by Kristen Goodhue

A winding blue river runs through a green wetland with low-lying grass
A freshwater wetland in Merritt Island, Florida. A new study found hotter, fresher wetlands emit more methane. (Credit: Chris M. Morris, cropped. CC-BY-2.0)

Your local wetland could be sending over 500 metric tons of methane into the atmosphere every year, per square mile. Or virtually none. It’s a bit of a mystery—one that’s been troubling climate scientists for decades. But a new report published this week is helping nail down which wetlands are more likely to be methane bombs.

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In Baltimore, High School Interns Link Race, Science and Faith

Wednesday, September 4th, 2024

by Kristen Goodhue

Two teenage girls wearing glasses, one with medium-brown skin and one with dark-brown skin, sit at a table looking at boxes filled with hundreds of labeled insects as part of the Science and Faith internship.
Denim Fisher (left) and Narcia Jackson look at pinned insects under a microscope at Sweet Hope Free Will Baptist Church. (Credit: Alison Cawood)

As a young student drawn to the intuitive side of things, Denim Fisher never felt completely at home in the science world. But she always had a deep love for nature, as a place to center and ground herself. That love, she acknowledged, comes mixed with trauma.

“The act of engaging with nature can be a daunting, frightening experience for most Black people,“ she said. “This fear response stems from historical racism and the awful things that we endured in these forests.”

Fisher was a graduating senior this year at Pikesville High School in Baltimore. Last winter and spring, she joined a high school internship program run on Saturdays by the Smithsonian Environmental Research Center (SERC) and Temple X. One particular Saturday stands out, walking through Gwynns Falls Park with her mentor, Alfie Chambers.

“We saw a poplar tree,” Fisher said. “Alfie taught me that Black bodies were lynched on this tree. This tree has gigantic branches, and mobs intentionally used these trees because of the increased likelihood of someone’s death.”

For Fisher, the internship offered a chance to explore new ways to reconnect her community with nature, and to create spaces for healing.

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