Category Archives: stronger coast

A new reality for plovers on the Jersey Shore

This story was originally published on our new Medium blog platform

This year’s severe storms underscore the power of nature and the vulnerability of our coasts. While nature can destroy, it can also defend. Supported by federal funding for Hurricane Sandy recovery, we’re working with partners to restore and strengthen natural systems that provide not only habitat for wildlife, but also protection against rising seas and storm surge. This is one in a series of stories highlighting results of our ongoing efforts to build a stronger coast.

On October 29, 2012, Hurricane Sandy plowed ashore near Atlantic City, N.J., with sustained winds of 75 miles per hour. In its wake, state officials declared it the most destructive natural disaster in the history of New Jersey. It changed communities dramatically.

There were flooded roads, fallen power lines, and 346,000 damaged homes.

Storm damage along the New Jersey coast after Hurricane Sandy. (USGS)

Natural features of the coastline underwent significant changes too, but in some cases, those changes presented new conservation opportunities that could protect people and wildlife in the face of future storms.

“We were able to identify places where piping plover habitat had been enhanced by the storm,” explained Todd Pover, a senior biologist for the Conserve Wildlife Foundation of New Jersey who has been involved in monitoring the federally threatened shorebird for 25 years. Places like Edwin B. Forsythe National Wildlife Refuge, where the storm erased the dunes in a three-quarter mile stretch of beach, creating an open expanse from ocean to bay.

Senior biologist for the Conserve Wildlife Foundation of New Jersey Todd Pover releases a piping plover, a species he has helped monitor for 25 years. (Jim Verhagen)

“It’s what we refer to as an overwash fan,” Pover said. “The most desirable habitat for plover.”

It was a good sign for the future of these birds in New Jersey. Although the number of nesting pairs along the Atlantic coast has nearly doubled since piping plover was placed on the Endangered Species List in 1986 — the species has since been downlisted from from endangered to threatened — New Jersey’s breeding population has failed to launch by comparison. There were 94 nesting pairs in the state in 1986. In 2017, there were 105.

Piping plover with a chick on sandy beach. (USFWS)

More nesting habitat meant the potential for more nesting pairs.

It was also a good sign for the New Jersey shore. Those overwash fans where piping plover like to nest are the product of wind and wave action continually reshaping the coastline, sometimes dramatically as in Sandy. Allowing coastal processes to play out naturally in areas like these helps absorb impacts of future storms.

“In a sense, piping plover represents coastal resilience,” explained Brooke Maslo, assistant professor of ecology at Rutgers University.

But although the creation of habitat gave biologists a reason for hope in the wake of this storm, it also gave them a reason to plan ahead next time. Agencies that typically respond to natural disasters, like the Federal Emergency Management Agency and the National Oceanic and Atmospheric Administration, follow standard operating procedures — a sort of playbook that identifies roles, responsibilities, and actions to make sure all the bases are covered.

Assistant professor of ecology at Rutgers University Brooke Maslo focuses on developing science to support habitat for beach-nesting shorebirds, including piping plover, black skimmer, and American oystercatcher, the bird in her hands in this photo.

“There wasn’t a similar protocol for biological conservation,” Maslo said. If there was a way to quickly assess and communicate benefits for endangered species, they could incorporate that into the response process too.

Now, thanks to collaboration between Rutgers and CWF New Jersey, there is.

With support from U.S. Fish and Wildlife Service Hurricane Sandy resilience funding, the partners have developed a standard assessment protocol for identifying opportunities to protect functional beach habitat after big storms based on what they learned from the last one.

They started by comparing nesting habitat for four beach-nesting species — piping plover, American oystercatcher, black skimmer, and least tern — before and after Sandy.

An example of the modeling results showing suitable habitat for American oystercatcher, black skimmer, least terns, and piping plover in Avalon and Stone Harbor, N.J. (Maslo et al. 2016)

“Where did habitat persist? Where was it lost? Where was it newly created? We wanted to be able to quantify habitat changes that occurred as a result of the storm, and to quantify the new habitat areas that could be prioritized for conservation,” Maslo said.

The results have already proven useful as a screening tool when working with communities to develop beach management plans — mandatory for towns that receive federal funding to protect piping plover.

“We suggest what could be the most suitable habitat based on the results, and they give us feedback about what they know to be true about that site on the ground,” Pover said.

It also helps natural resource managers plan for constant change. “The beach will change, so creating set-aside areas interspersed throughout the state gives the birds someplace else to go when it does,” Pover said.

A map showing habitat suitability for piping plover at the Holgate unit of Edwin B. Forsythe National Wildlife Refuge after Hurricane Sandy. Any area in color in the above image is considered “suitable”, with warmer colors indicating higher suitability. (Maslo)

It’s like habitat insurance for plover, and it’s clear they will make the most of their safety net. Although most of the new habitat created by Hurricane Sandy was stabilized to pre-storm conditions, resource managers were able to let nature take its course at the site at Forsythe — a wilderness area where no human infrastructure was at stake.

And?

“In the years after Sandy, we went from 12 to 25 pairs at that site,” Pover said. With a secure place to nest, the birds became more productive, with twice as many fledglings as a typical pair in New Jersey.

“Forsythe is a poster child for what could happen if we protect these sites,” he said.

Biologists now know what to look for in potential nesting sites. With the protocol, resource managers, landowners, and town officials can look for these opportunities in their own communities as well.

And because it was developed with input from agencies like NOAA and FEMA that are on the front lines after a natural disaster, the protocol will help factor benefits for wildlife into the existing response process. That will benefit people too. Wildlife tend to good indicators of threats to communities, or as in New Jersey, a sign that they have reason to hope.

Stronger Communities | Pond Lily Nature Preserve

This story was originally published on our new Medium blog platform

This year’s severe storms underscore the power of nature and the vulnerability of our coasts. While nature can destroy, it can also defend. Supported by federal funding for Hurricane Sandy recovery, we’re working with partners to restore and strengthen natural systems that provide not only habitat for wildlife, but also protection against rising seas and storm surge. This is one in a series of stories highlighting results of our ongoing efforts to build a stronger coast.

For decades, New Haven’s Pond Lily Dam was a nuisance to the community, having long outlived its time as a part of an old mill. Sitting astride the West River, it contributed to flooding, blocked fish passage upstream, and threatened to one day break and cause devastation in the area.

Now, with the help of the Service and partners, that dam is gone, and the pond behind it has been replaced by a sprawling green nature preserve and a free-flowing river. This is the story of the team that got it done.

Nature returns: When dams come down, fish come back

This story was originally published on our new Medium blog platform

This year’s severe storms underscore the power of nature and the vulnerability of our coasts. While nature can destroy, it can also defend. Supported by federal funding for Hurricane Sandy recovery, we’re working with partners to restore and strengthen natural systems that provide not only habitat for wildlife, but also protection against rising seas and storm surge. This is the first in a series of stories highlighting results of our ongoing efforts to build a stronger coast.

“What did the fish say when it hit the wall? Dam!”

Whether you laughed or groaned, this joke captures the conundrum faced by migratory fish ever since European settlers harnessed the power of the Northeast’s rivers to make everything from flour to textiles to paper.

Migratory fish like alewife travel up rivers and streams to spawn. Credit: Chesapeake Bay Program/Will Parson

Fish like alewife and blueback herring (collectively called river herring), American shad, and American eel split their time between freshwater and saltwater habitats. They’ve been shut out of their spawning and nursery grounds in many waterways for centuries, whether by dams or other barriers. Bad news not only for them — river herring are under review for potential Endangered Species Act protection— but for big ocean species like cod and tuna who prey on them.

Following Hurricane Sandy in 2012, the U.S. Fish and Wildlife Service received more than $100 million to improve the health of coastal habitats to benefit wildlife and people. Since then, we’ve worked with partners to remove 12 dams and improve passage at two other sites, re-opening more than 100 miles of river to migratory fish.

With obstacles gone, the fish are returning to their old ways across the Northeast, often at the first opportunity.

Where West Britannia Dam once stood in Taunton, Mass., the Mill River is returning to its natural state. Credit: USFWS/Eric Derleth

Massachusetts

In 2005, the rain-swollen Mill River threatened to breach Whittenton Pond Dam and flood downtown Taunton, a half-mile away. The incident made national headlines and spurred an effort to remove the river’s aging and unsafe dams, which kept migratory fish from reaching spawning grounds in Lake Sabbatia and its tributaries.

We worked with others to remove the dam in 2013 — and the river’s final barrier, West Britannia Dam, in January 2018.

Last spring, an underwater camera monitored by the Massachusetts Division of Marine Fisheries captured a river herring using the fish ladder at Lake Sabbatia — the first to enter the lake in 200 years. Before spawning season was done, at least 1,200 herring swam through.

A few sea lampreys passed through the ladder, probably the first to do so since the dams were built. Although lampreys are a problem in the Great Lakes watershed, where they are an invasive species that out-competes native fish, they are a boon to rivers and streams along the East Coast.

More than 1,300 young-of-the-year American eels made the journey to Lake Sabbatia, as well — more than any previous year. Eels reproduce in the ocean and mature in rivers and streams — the opposite of river herring, shad, and sea lampreys.

The nature-like fishway that replaced Bradford Dam allows fish and paddlers to pass. Credit: USFWS/Suzanne Paton

Connecticut/Rhode Island

The Pawcatuck River runs from Worden Pond in Rhode Island, west to the Connecticut border, and south into Little Narragansett Bay. Since 2010, we’ve worked with partners to remove four dams and update two fish ladders on the river.

White Rock Dam was taken down in 2015 and improvements were made to the fish ladder at Potter Hill Dam in 2016. Surveys in 2017 found river herring and shad above the White Rock site, which was once all but impassable. The fish count at Potter Hill was the highest in 15 years.

Last winter, Bradford Dam was replaced with a nature-like fishway, clearing nearly all of the river’s 34 miles to migratory fish.

Hyde Pond Dam held back Whitford Brook, a tributary of the Mystic River, for some 350 years before its removal in 2015. This year, more than 1,200 alewives were trapped upstream of the former dam.

Where Pond Lily Dam once held water, the banks of the West River now support plants. Credit: Connecticut Fund for the Environment/Save the Sound

In 2016, the dam blocking the West River on the Pond Lily Nature Preserve in New Haven, Conn., was taken down. The next spring, several alewives were seen above the former dam site. This year, 33 alewives were collected above the restored area.

Removal of Norton Mill Pond Dam in 2016 opened 17 miles of the Jeremy River to migratory fish. The following year, 127 sea lamprey nests were found above the former dam site; in 2018, there were 165.

New Jersey

In 2016, Hughesville Dam on the Musconetcong River was removed. A tributary of the Delaware River, “the Musky,” is a National Wild and Scenic River.

The next spring, the New Jersey Division of Fish and Wildlife confirmed an American shad upstream of the former dam site — possibly the first to make it that far since the dam was built in 1889.

Service biologist Katie Conrad holds an alewife during fish monitoring at Wreck Pond. Credit: USFWS

Wreck Pond was once connected to the ocean by a natural inlet that allowed fish to pass between the water bodies. After the inlet was replaced with a narrow pipe in the 1930s, the health of the pond deteriorated, and river herring struggled to enter the pond, the gateway to spawning grounds upstream.

Hurricane Sandy overwhelmed the existing entry to the pond, cutting a new inlet and flooding nearby homes. In 2016, partners installed a large box culvert next to the existing pipe to improve fish passage and reduce flooding.

In Fall 2017, young-of-the-year alewife on their way to the Atlantic were netted near the culvert — a clear sign that adults were making it to the spawning grounds upstream. This year, more than 150 were found — a 30-fold increase over any other year.

Perks for people, too

Removing barriers to fish benefits people, as well. A 2011 Service study found that every mile of river opened can contribute more than $500,000 annually in social and economic benefits once fish populations are at their full productivity.

Free-flowing rivers make the coast stronger in the face of future storms. They carry sediment downstream, where it nourishes coastal marshes and beaches that provide a natural defense to rising seas and storm surge. During Hurricane Sandy, coastal wetlands prevented $625 million in flood damages. In many cases, the risk of local flooding above a former dam is also reduced.

Canoeists enjoy the free-flowing Pawcatuck River. Credit: Wood-Pawcatuck Watershed Association

And then there’s the fun part — more opportunities for recreation like fishing and paddling. The American shad already returning to the Musky and Pawcatuck are prized by anglers for their feistiness. Experienced paddlers are able to “run” the nature-like fishways on the Pawcatuck instead of portaging around the old dams, making their passage almost as easy as that of migrating fish.

Stay tuned….

This is just the beginning. Three Sandy-funded dam removals happened last summer, and two new projects were funded this fall.

In the coming years, the National Fish and Wildlife Foundation will oversee nearly $3 million of ecological monitoring at nine sites where dams were removed. The work includes tracking fish with radio-telemetry as they move through waters once off-limits.

One thing is already clear, though — given a chance, rivers will rebound, fish will return, and people will benefit. That’s what we call a stronger coast.