When it comes to scientific data, older isn't typically better. But when you are teasing out environmental trends, like temperature change, it helps to have a long record. The Chesapeake Biological Laboratory (CBL) in Solomons, Maryland, is the oldest state-supported marine laboratory on the East Coast, and it touts the longest continuous record of water temperature in the Chesapeake Bay.
CBL's 750-foot research pier on the Patuxent River was first built in 1936, and in 1938 scientists started walking out to collect thousands of daily temperature and salinity readings. Today, anyone can observe live water conditions at the pier online. In the 70 years after 1938, the laboratory documented a 2.7 degree Fahrenheit temperature increase in the water around the pier.
"And that's given a unique, long-term record that’s shown the essential elements of climate change,” said Dr. David Secor, a fisheries ecologist at CBL who first reported the trend. “That motivated our group to begin to look at how young fish that we collect here by the pier may change."
Secor’s lab has performed seining studies since 1999. His team first used a 100-foot seining net to focus on bluefish, which morphed into a project on menhaden. “We’ve basically shoe-stringed this effort along,” Secor said, describing short-term funding sources. “And I think we have a dedicated, motivated group of students and myself that will hopefully continue this on throughout my career.”
The most common species caught by the seine are Atlantic silverside, bay anchovy, and Atlantic menhaden. Another 10 percent is bluefish, blue crab, white perch, striped bass and spot. Secor said future observations depend on how well species can adapt to temperature change as well as seasonality—the conditions in spring and winter that “set the clock” for what fish are present later in the year.
“What we may see in the future, with warming, is a disruption of that clock,” Secor said. “Maybe we’ll see higher production of some things like blue crabs, but we may see diminished production of fish that don’t do so well in warmer waters such as striped bass, perch and black sea bass.”
“We saw a kingfish last year for the first time in our series,” Secor said. “These kinds of fish that we already see visiting the lower Chesapeake Bay will be coming up this way more frequently.”
Regardless of the fish that will be seen, one fair prediction for the future is that the CBL pier will be there to support the science.
“This pier has been here in purpose for 70 years but it’s been replaced several times, and that too is the result of climate events,” Secor said. “Hurricanes and tropical storms have really taken a bite out of this pier on occasion.”
In 2010, after several recent storms, the University of Maryland Center for Environmental Science received a $1.7 million grant to rebuild the pier from the National Science Foundation as part of the American Reinvestment and Recovery Act. In 2011, Hurricane Irene dealt additional damage before construction began the next year. The pier received several new pilings, an upgraded pump house, and new instrumentation to measure greenhouse gases in the air.
“It’s been rebuilt now,” Secor said, sitting on the pier’s new deck. The full length of the pier is now covered in a corrugated material designed to allow water—and fallen car keys—to pass through uninhibited.
“It’s made out of much more flexible, much more enduring materials.”
To view more photos, visit the Chesapeake Bay Program’s Flickr page
Video, Images and Text by Will Parson
The Maryland portion of the Chesapeake Bay dead zone measured slightly smaller than average this past summer, supporting scientists’ June prediction of a smaller than average hypoxic zone in the nation’s largest estuary.
Dead zones are areas of little to no dissolved oxygen that form when nutrient-fueled algae blooms die and decompose. This decomposition process removes oxygen from the surrounding waters faster than it can be replenished, and the resulting low-oxygen conditions can suffocate marine life.
Each summer, the Maryland Department of Natural Resources (DNR) and the Virginia Department of Environmental Quality (DEQ) collect water samples to measure the hypoxic volume of the Bay. At 3,806 million cubic meters, the Maryland portion of this year’s dead zone was the 13th smallest in 31 years of sampling.
According to a report from the DNR, the size of the dead zone was likely due to reduced rainfall earlier this spring.
Federal agencies are seeking feedback on a set of short-term water quality goals, or milestones, as part of the Chesapeake Bay Executive Order and in support of the 2014 Chesapeake Bay Watershed Agreement.
The “Strategy for Protecting and Restoring the Chesapeake Bay Watershed” calls upon the federal government to join the seven Chesapeake Bay jurisdictions—Delaware, Maryland, New York, Pennsylvania, Virginia, West Virginia and the District of Columbia—in establishing two-year milestones. The draft water quality milestones for 2016-2017 were selected because they represent activities that can result in considerable environmental improvements, require significant resources or directly support the jurisdictions in meeting their Watershed Implementation Plans (WIPs).
You can provide feedback on the draft water quality milestones through December 17, 2015.
Visit the Chesapeake Bay Executive Order website to learn more about the federal strategy to protect and restore the Bay.
At Endless Trails Farm in Hubbardsville, N.Y., Troy Bishopp is looking for cow pies.
“There’s a little bit there, but overall there isn’t a whole lot of manure,” he says, explaining to the farm's manager. “Every rotation we’re going to want more.”
Bishopp is a conservation specialist with New York’s Madison County Soil and Water Conservation District and the Upper Susquehanna Coalition, and among the services he provides is advice on how grassland farmers can get the most out of their pastures. With 30 years of experience, he has learned to pay attention to the subtleties that only come with walking out in a field and talking with farmers.
“I’m constantly looking, because wherever that cow manure lands is where there’s going to be more grass than not,” Bishopp says. This passion for grass has led to him being called the Grass Whisperer, a moniker first bestowed on him by his friend Dick Warner during a visit to Washington to educate congressional districts about grass-based agriculture in New York.
Bishopp has worked with Endless Trails Farm for about eight years, first to set up some conservation practices like stream buffers, then helping with fencing and offering rotational grazing advice. When he visits a farm, his tools are cheap—a plastic grazing stick helps him assess how many pounds of feed are in a pasture, and a reel of electrified tape lets him keep animals on and off sections of pasture, a practice he prescribed for Endless Trails.
“There was no real system of fencing or paddock rotation [on this farm]. And so usually in July and August there wasn’t a whole lot of grass here,” Bishopp says. “Implementing strategic fencing, water spots around the farm, water tubs, and then allowing the grass and the pastures to rest for a month or two, always made a lot of grass which actually sequestered any rain that came, which is huge up here.”
The water infiltration resulted in more grass for cattle at the farm, and also less runoff, including sediment and nutrients, running into streams and ultimately into the Chesapeake Bay. In 2011, the Madison County Soil and Water Conservation District named Endless Trails its Conservation Farm of the Year.
“Generally speaking, we want to retain our topsoil, have good water infiltration and keep the waters clean,” Bishopp says. “When you produce a lot of feed and you do those things that make you money, conservation comes right along with it.”
To view more photos, visit the Chesapeake Bay Program’s Flickr page.
Video, Images and Text by Will Parson