Posted by Kristen Goodhue on December 22nd, 2015
by Kristen Minogue
Ecologist and lead author Josh Caplan holds a Phragmites plant at the Global Change Research Marsh. Invasive Phragmites can grow up to 15 feet tall. (Thomas Mozdzer)
One of the Chesapeake’s least favorite invaders could end up being an unlikely savior. The invasive reed Phragmites australis, a plant that has exploded across Chesapeake wetlands in the last few decades, is also making those wetlands better at soaking up carbon, ecologists from the Smithsonian Environmental Research Center (SERC) and Bryn Mawr College discovered in a new study.
The common reed, better known as Phragmites australis, grows in dense clusters up to 15 feet tall. North America has several native strains that have co-existed peacefully with many other native plants for at least 30,000 years. It is the invasive strain that arrived from Eurasia in the 1800s that has scientists and environmental managers worried. Eurasian Phragmites grows taller and denser than North American Phragmites, crowding out many smaller plants, and blocking access to light and nutrients. These changes in plant community have a ripple effect on animals that rely on wetlands for habitat.
“The fish communities, the insect communities, the soil and invertebrate communities, all these things change when Phragmites comes in,” says lead author Josh Caplan, a Bryn Mawr postdoc and visiting scientist at SERC. Often, those changes aren’t for the better. “Phragmites is doing a number to these ecosystems.” Click to continue »
Posted in Climate Change, Ecology, Invasive Species, Land Use, Publications, SERC Sites and Scenes | Comments Off on Phragmites vs. Climate Change: Invasive Reed Better at Taking Up Carbon
Posted by Kristen Goodhue on December 21st, 2015
Enjoy our Smithsonian science-based crossword puzzle in celebration of Crossword Day. Words for this puzzle were derived from our blog posts in 2015. Stumped? Search our blog posts for additional clues or click the Reveal Letter button for help. Good luck and may the force be with you!
Online version: http://crossword.info/Soulenfish/Ecology_Flair_Final
Posted in Publications | Comments Off on A Crossword Puzzle with Ecology Flair
Posted by Kristen Goodhue on December 17th, 2015
Bivalves from Panama for Dermo disease study
by Heather Soulen
Last week Nature magazine published a news piece about how supplies of agar, a research staple in labs around the world, are dwindling. Agar is a gelatinous material from red seaweed of the genus Gelidium, and is referred to as ‘red gold’ by those within the industry. Insiders suggest that the tightening of seaweed supply is related to overharvesting, causing agar processing facilities to reduce production. Most of the world’s ‘red gold’ comes from Morocco. In the 2000s, the nation harvested 14,000 tons per year. Today, harvest limits are set at 6,000 tons per year, with only 1,200 tons available for foreign export outside the country. In typical supply and demand fashion, distributor prices are expected to skyrocket. As a result, things could get tough for scientists who use agar and agar-based materials in their research.
Agar is a scientist’s Jell-O. Just like grandma used to make Jell-O desserts with fruit artfully arranged on top or floating in suspended animation within a mold, scientists use agar the same way. Bacteria and fungi can be cultured on top of nutrient-enriched agar, tissues of organisms can be suspended within an agar-based medium and chunks of DNA can move through an agarose gel, a carbohydrate material that comes from agar. Agar and agar products are the Leathermans of the science world.
Click to continue »
Posted in Climate Change, Ecology, Fisheries, Invasive Species, Parasite Hunting, Publications | Comments Off on Restrictions in Seaweed Agar-vate Scientists
Tags: agar, agarose, bivalves, clams, Dermo, disease, DNA, ecology, endobacteria, fungi, fungus, gel, marsh, microbiome, nutrient pollution, Orchid, oysters, parasites, Perkinsus, Phragmites, science, seaweed, Spartina
Posted by Kristen Goodhue on November 25th, 2015
New report enables creation of carbon credits for restored wetlands
by Kristen Minogue
SERC’s Global Change Research Wetland (Credit: SERC)
How much is a wetland worth?
It’s a question that has plagued policymakers, scientists and other leaders looking to protect their communities and slow down the pace of climate change. For the first time, thanks to a new report released Tuesday, scientists have a method to calculate how much greenhouses gas emissions a restored wetland can offset that can be used anywhere in the world–which will allow the creation of carbon credits. Click to continue »
Posted in Climate Change, Ecology, Publications | Comments Off on The Blue Carbon Market Is Open
Posted by Kristen Goodhue on November 23rd, 2015
by Kristen Minogue
SERC Intern Julianne Rolf stands in the streambed of Muddy Creek. Erosion has caused it to drop 10 feet below its floodplain. (SERC)
In the forests of Edgewater, Md., a stream called Muddy Creek is sinking. By itself this is hardly news. The Chesapeake’s ailing streams span thousands of miles, and the watershed’s states have devoted hundreds of millions of dollars towards trying to restore them. It’s part of a gargantuan effort to clean up the Chesapeake. Sick streams create a sick bay, and environmental managers are anxious to stem the nutrient and sediment overload from streams. But for all the zeal surrounding stream restorations, their success rate hasn’t always lived up to the hype. How effective can they be—and what do they need to succeed?
Fortunately, this stream happens to be under the watch of scientists. And the restoration of Muddy Creek may yield some answers. Click to continue »
Posted in Publications | 2 Responses »
Posted by Kristen Goodhue on November 16th, 2015
by Kristen Minogue
Frozen methane bubbles in an Alaska lake. When icy permafrost thaws, microbes are able to consume the carbon stored there and turn it into methane gas. (Miriam Jones/USGS)
We’ve underestimated greenhouse gases. Not carbon dioxide, arguably the most famous greenhouse gas except water. But others, like methane, are less abundant but more powerful in terms of trapping heat. And our figures about that have probably skewed low.
Carbon dioxide (CO2) comprises a staggering three-fourths of global greenhouse gas emissions, making it a major driving force behind climate change. But methane (CH4), long locked in Arctic permafrost, is escaping as ice thaws. Methane also enters the atmosphere via natural gas, livestock, coal mining, oil and even wetlands.
For years scientists and policymakers have reported that methane is roughly 30 times more powerful than CO2 over a century. This fall, two biogeochemists tested a more accurate model and discovered the true figure is far higher – more like 45 times more powerful than CO2.
The good news? Taking methane out of the atmosphere makes an even bigger difference than putting it in. Click to continue »
Posted in Climate Change, Ecology, Publications | 4 Responses »
Posted by Kristen Goodhue on November 10th, 2015
by Heather Soulen
Rob Aguilar takes photos of all DNA barcoding reference specimens they collect in the Chesapeake Bay
Rob Aguilar of SERC’s Fish and Invertebrate Ecology Lab co-authored a DNA barcoding paper this past September in the journal Environmental Biology of Fishes. Rob spoke with us about his paper and the DNA barcoding work going on in the Fish and Invertebrate Lab. While the term DNA barcoding may seem difficult to understand, it’s easiest to think about it as a uniquely identifiable species level code.
Click the sound file below to listen to the interview.
Additional barcoding details are available in the full podcast transcript.
Click to continue »
Posted in Ecology, Fisheries, Interviews, Invasive Species, Publications | 1 Response »
Tags: barcoding, catfish, DNA, fish, invasive species, predator
Posted by Kristen Goodhue on November 4th, 2015
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Erica Staaterman selfie with a baby larval snapper. (Erica Staaterman)
by Kristen Minogue
Dr. Erica Staaterman listens to the ocean for a living. Often seen as a silent landscape broken only by whale or dolphin songs, Staaterman is helping uncover a wealth of noise from the ocean’s hidden creatures, first in California and now in the Chesapeake as a postdoc for the Smithsonian Environmental Research Center. Learn more in the edited Q&A below, and click the sound files to hear some of the secret sounds of the sea.
How did you get into acoustic ecology?
My first research job out of my undergrad was working for Sheila Patek at UC Berkeley….She had a bunch of recordings of these [California spiny] lobsters making sound, and nobody really understood why they make sound. So we did an experiment where we tried to understand the function of the sounds made by these lobsters. So anyway, that was sort of my first foray into acoustics, and from there I just thought it was really fascinating.
In California, you described researching a chorus of mantis shrimp. What did that sound like?
We called them rumble groups. Sometimes they would have two rumbles per group, sometimes three rumbles per group, sometimes four or five….At dawn and dusk you would hear so many different rumble groups occurring at the same time that they would all be sort of overlapping, and it seems to indicate that there are many individuals making sound at the same time, just the way birds all sing out at once in air.
Listen below: Mantis Shrimp “Rumble Groups” Click to continue »
Posted in Ecology, Fisheries, Interviews | 4 Responses »
Posted by Kristen Goodhue on October 31st, 2015
The Devil You Know
by Heather Soulen
In our last installment of The Dark Side of Taxonomy, we’ve saved one of the most fear inducing scientific names for last. We wouldn’t have done due diligence this Halloween season if we didn’t mention him. In this piece we present a small collection of organisms that in some instances have suffered the same etymological fate – a scientists with a proclivity for dark humor. Here we spotlight organisms that carry the infamous name of an angel who fell from grace.
Click to continue »
Posted in Publications | Comments Off on The Dark Side of Taxonomy: Part Three
Posted by Kristen Goodhue on October 30th, 2015
by Heather Soulen
Darker Still
Delving deeper into the dark side of taxonomy, we forge forth into the ether to uncover obscure and wickedly inspired scientific names. What’s in a scientific name? As described in The Dark Side of Taxonomy: Part One, some scientific names for organisms have dark and twisted origins. In part two of this three-part series, we peek behind the thin gauze-like veil, fearlessly sifting through time and lore to deliver a new collection of gruesome scientific names. Here we share ancient tales of Greek mythology, an Italian literary genius from the Middle Ages and the unforgiving Underworld.
Click to continue »
Posted in Classes and Events, Education, Fisheries, Publications | Comments Off on The Dark Side of Taxonomy: Part Two
Tags: binomial nomenclature, Dante, fish, Greek mythology, Hades, Halloween, Hell, Inferno Pergatorio, moth, scientific names, Taxonomy
![Erica Staaterman in the [X] with baby [X].](https://sercblog.si.edu/wp-content/uploads/2015/11/withbabyfish_brightened.jpg)