The Surprising Importance of Freshwater Fisheries to Global Food Security

Nature Conservancy - Science

If you’re thinking about how fisheries feed people around the globe, chances are you start picturing oceans. But what about freshwater fisheries? The reality, though, is that freshwater fisheries are crucial in feeding millions of people around the globe.

After 250 Years of Dams, Rhode Island River Restored for Migratory Fish

Nature Conservancy - Science

The last time fish could migrate unimpeded on the Pawcatuck River, George Washington was a surveyor, not a president. Fish & Fisheries From the Field Connectivity Fish Migrations Nature + People Restoration Rivers Water Wetlands

Recovery: New Life in Coal Country

Nature Conservancy - Science

Fish & Fisheries Wildlife Fish Fisheries Restoration Rivers Water Water QualityAcid mine drainage devastates streams, but there are surprising efforts underway in Coal Country.

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Rivers, Dams, and Drive-By Truckers

Nature Conservancy - Science

Concentration, Confrontation, Collaboration: The Future of River Conservation and Sustainable Hydropower. Now, lots of people think they are awesome, but I may be the only person who does so in part because among the stories they tell are a few about hydropower, rivers and people.

Imagine Rivers Full of Migrating Fish

Nature Conservancy - Science

Alewives migrating on the Penobscot River. May 24 is World Fish Migration Day , a worldwide celebration of healthy rivers and free-running fish. It’s also a day to imagine the possibilities of connecting fish, rivers and people. Envisioning a Healthy River.

Go with the Flow: Using Flow Experiments to Guide River Management

Nature Conservancy - Science

A river’s form and function are profoundly woven together. Rivers and streams have seen widespread habitat and species loss, prompting extensive restoration efforts. Often, when people think of restoration, they think of a river’s form : How wide or meandering is the channel?

Electrofishing Threatens A Rare Dolphin-Human Partnership

Nature Conservancy - Science

Myanmar’s river dolphins have learned to fish cooperatively with humans. Fish & Fisheries From the Field Wildlife Asia Pacific Endangered Species Fisheries Mammal WatchingBut illegal electrofishing threatens this rare partnership.

Two Great Fish Reads

Nature Conservancy - Science

Fish & Fisheries Books Fish RiversA review of Stephen Sautner’s Fish On, Fish Off and Mark Spitzer’s Beautifully Grotesque Fish of the American West.

2017 62

Recovery: Humpback Chubs, New Values and New Hope for Endangered Native Fish

Nature Conservancy - Science

Humpback chubs, native to the turbulent, turbid water of the Colorado River system, are all three. Such was the counsel I and my fellow anglers received from our elders and the fisheries management establishment until the 1970s. Little Colorado River and mainstem confluence.

2016 104

Recovery: Benefits of Salmon Failure

Nature Conservancy - Science

Of all North America’s Atlantic salmon rivers none compared in size or productivity with the 407-mile-long Connecticut River that drains Vermont, New Hampshire, Massachusetts and Connecticut. By 2012 the Connecticut River run numbered only 54, and the U.S.

2017 85

Recovery: Why Sea Lampreys Need to be Restored and Killed

Nature Conservancy - Science

Anglers had it straight from the outdoor page of the December 15, 2002 Lawrence (Massachusetts) Eagle-Tribune : “The fish ladders [on the Connecticut River] ought to be used to diminish the [sea] lamprey and prevent it from entering into the lakes and streams of New Hampshire.”

2017 75

Afloat in Alaska: On a Charging River where the Salmon Run

Conservancy Talk

We are on a 50-passenger jet boat up the Class VI rapids of Devil’s Canyon on the Susitna River in Alaska. The roar of the jet boat is lost in the thrumming as the reddish-brown canyon walls squeeze one of the largest rivers on the continent and drop it off that ledge.

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Big Fish: Return of the Alligator Gar

Nature Conservancy - Science

Once they were the river’s top predator : a fish that could reach ten feet or more, with thick armored plates as scales and imposing jagged teeth. You would see their long, tooth snouts poking out from the river’s surface, gulping air—their adaptation for thriving in warm, deoxygenated water.

The Atchafalaya River Basin: The Future of Nature?

Nature Conservancy - Science

The Atchafalaya River Basin: History and Ecology of an American Wetland (Texas A&M Press) is Piazza’s beautiful new synthesis of more than 300 contemporary and historic scientific studies of the ARB. PIAZZA: It started after the disastrous Mississippi River flood of 1927 , when the U.S.

Dead Zone Redemption

Nature Conservancy - Science

Somewhere in America’s Heartland, nutrients — nitrogen and phosphorus — are flowing into the Mississippi River where they mix with other nutrient runoff destined for the river’s coastal terminus: the Gulf of Mexico. Forested islands create a maze in the Mississippi River near Iowa.

2017 61

Recovery: Saving Grayling With a Carrot and Stick

Nature Conservancy - Science

And as recently as the early 20th century grayling abounded in the upper Missouri River system. Montana’s Big Hole River, the grayling’s major stronghold, drains a watershed that’s 90 percent private ranch land. Adult Arctic Grayling in the Red Rock River.

2016 81

Mining Silt, Sewage and Transformer Waste Streaming Into Iraq Rivers

Green Prophet

The Tanjero River that flows southwest of the city of Sulaimani in Iraq, is remembered by many to be a sizeable and beautiful river. Such practices destroys habitats and fisheries and leads to erosion ( read here why erosion is bad ). A very polluted river.

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Fish of the Forest: Large Wood Benefits Salmon Recovery

Nature Conservancy - Science

Binge ‘Til You Burst: Feast & Famine on Alaskan Salmon Rivers. Activities that impact small streams and rivers, such as logging, development, pollutants and climate change, therefore directly threaten these species. Why Do River Systems Need More Wood?

A Lock Holds the Key to Restoring Migratory Fish

Nature Conservancy - Science

Auburn University research assistant Chase Katechis examines an Alabama shad on the Apalachicola River, Florida. Author’s Note : This blog originally ran a year ago, following time afield with shad researchers on Florida’s Apalachicola River.

Artist’s Plans to Cover Arkansas River with Miles of Fabric Halted; Opponents Sue Colorado Park Board

Wend Magazine

One of their artistic aspirations was to drape shimmering silver-colored fabric over several miles of the Arkansas River in Southern Colorado, a project called ‘ Over the River ‘ And Christo, still working on this dream, made headway in late June when the Colorado Parks and Wildlife Board decided to support the endeavor. Indonesian River Wave Breaks Endlessly Click here to view the embedded video. You may have never heard of the artist, Christo , by name.

Recovery: Gila Topminnow, A Desert Native Gets a Second Chance

Nature Conservancy - Science

On the morning of November 13, 2015 he and colleagues from his agency, Friends of the Santa Cruz River, Sonoran Institute, National Park Service and U.S. Geological Survey were doing routine fish sampling with a portable shocker on the Santa Cruz River in southeastern Arizona.

2016 82

Adventures with Bowfin, North America’s Underdog(fish)

Nature Conservancy - Science

I recall well my first encounter: pulling that bizarre fish with the long dorsal fin into a boat, as part of fish surveys I was conducting on Michigan’s Muskegon River. Once again, fisheries scientists and ecologists are working toward a balance for management of this natural resource.

10 Fish Conservation Success Stories to Celebrate

Nature Conservancy - Science

It’s true: around the globe, many rivers and lakes aren’t what they used to be. It far exceeded Herrington’s hope , with as many as 280,000 total migratory shad now in the river system! Return of a “River Monster” Alligator gar caught at Moon Lake, Mississippi.

How Do Conservationists Target Dams for Removal?

Nature Conservancy - Science

When most environmentalists think about dams, they think of the big hydropower and irrigation projects: massive amounts of concrete backing up miles of river. Fish & Fisheries Fish Nature + People Rivers Technology Water

2017 75

More Trout, Less Algae: Wisconsin Stream Demonstrates Benefits of Targeted Conservation

Nature Conservancy - Science

In Wisconsin’s Pecatonica River watershed, conservationists have targeted conservation practices on farms they can make the most difference for the least cost. Fish & Fisheries Wildlife Agriculture Economics Fish Water Water Quality

Sustainable Hydropower: Are Small Dams Really Better for the Environment?

Nature Conservancy - Science

However, this dam, Veazie, on the Penobscot River, had a capacity of 8.4 A recent study (Kibler and Tullos 2013) looked at scaled hydropower impacts in the Nu River basin of southwestern China (the Nu becomes the Salween as it flows into Burma).

Where the River Meets the Road: Reconnecting Adirondack Brook Trout Streams

Nature Conservancy - Science

Flyfishing for brook trout draws many anglers to Adirondack waters like the Ausable River. Many streams have what fisheries biologists call heritage-strain brook trout—trout strains that have not been altered by stocking, fish perfectly adapted to specific watersheds, specific streams.

Restoring Guadalupe Bass After the Smallmouth Invasion

Nature Conservancy - Science

We’re drifting down a curving Texas river, casting streamers into riffles. Already I love these fish: attractive, hard-fighting and found in scenic, largely unvisited rivers. In some rivers, Guadalupe bass essentially disappeared. We’d likely have the river to ourselves.

2016 82

Salmon Cam: Watch Migratory Fish Live

Nature Conservancy - Science

Welcome to Salmon Cam, where you can enjoy the underwater happenings of a California salmon river throughout the day, on your computer or device. The Conservancy’s Chris Babcock will also post periodic updates on what to look for in the river at different times of the fall.

2016 82

Restoring an Ancient Nursery for Atlantic Sturgeon

Nature Conservancy - Science

But a feeling akin to maternal affection might be the best way to describe the reaction of researchers who, in 2009, while sampling just downstream of Philadelphia, captured the first juvenile Atlantic sturgeon that had been found in the Delaware River in decades. came from the Delaware River.

Recovery: Saving Lake Sturgeon, an Ancient Fish with a Bright Future

Nature Conservancy - Science

The fish that had abounded in drainages of Hudson Bay, the Great Lakes and the Mississippi River as far south as Alabama suddenly faced extinction. Menominee River. Leading the effort has been Purdy Fisheries of Point Edward, Ontario. Louis River, the largest U.S.

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Gar of Thrones: Winter is Coming

Nature Conservancy - Science

We recently published research showing how peripheral populations of an ancient fish in the Great Lakes basin have adapted to shorter growing seasons by evolving faster growth rates than their southern counterparts (core population, Mississippi River basin). Winter is Coming.

2015 67

Recovery: Alewives, the Little Fish with a Big Role

Nature Conservancy - Science

Bad things happen when dams disconnect lakes and rivers from the sea, and one of the worst is the near extirpation of alewives. Croix River, which defines part of the border with New Brunswick and has the potential to support a run of 22.7 Fish & Fisheries Fish Fisheries

2015 103

Beyond the Power Struggle: The Science and Values of Sustainable Hydropower

Nature Conservancy - Science

Doug Garletts, a fisheries biologist with the U.S. Army Corps of Engineers, inspects a fish trap below Lookout Point Dam located on the Middle Fork of the Willamette River at Lowell, Oregon. Freshwater dams Fish fisheries Fresh Water great rivers partnership hydropower Jeff Opperman

2014 73

Recovery: Rehoming Brook Trout, the Dweller of Springs

Nature Conservancy - Science

Where the River Meets the Road: Reconnecting Adirondack Brook Trout Streams. Fishery crew surveying a brook trout stream in GRSM via electrofishing. (In This past fall when Hurley sampled the Santuit River on Cape Cod he found that the population had blinked out.

2016 82

The Underwater Secrets of Horseshoe Crabs

Nature Conservancy - Science

The Atlantic States Marine Fisheries Commission has concluded that the eel population is “at or near historically low levels.”. A similar unregulated gold rush ensued, also in the 1990s, when fisherman scooped out millions of young “glass eels” from rivers.

2017 83

Results: Great News for Shad

Nature Conservancy - Science

Alabama shad once migrated in huge numbers up many southern rivers, and as far north as Iowa. There are rivers where shad still run, but they eventually bump their heads into a dam and can’t go farther,” Herrington says. “We Shad once played a huge role in river ecosystems.

Gillnets in Lake Yellowstone: Can Conservationists Recover Cutthroat Trout in Our First National Park?

Nature Conservancy - Science

One of those classic experiences was cutthroat trout fishing in the Yellowstone River. By the time I first visited Yellowstone National Park in 2001, the Yellowstone River’s cutthroat fishery was a pale shadow of its former self. to 4 million trout: a highly productive fishery.

Lakes 79

New Research on the Remarkable Binge-Eating Bull Trout

Nature Conservancy - Science

Binge ‘Til You Burst: Feast & Famine on Alaskan Salmon Rivers. During this period, the river can “black out” so thick are the juvenile sockeye salmon. We were also amazed by the congregations of bull trout that we were seeing in the river,” Furey says. “So

2016 76

Lake Yellowstone: Promising News for Native Trout Recovery

Nature Conservancy - Science

Lake trout decimated the ecologically and economically vital Yellowstone cutthroat trout fishery. When I was a kid, fishing the Yellowstone River was one of those outdoor experiences I put on my dream list. A river otter eats a spawning Yellowstone cutthroat trout in the national park.

Lakes 88

Got Oysters? We Have an App for That

Nature Conservancy - Science

Outtakes: On the Docks of the Mid-Atlantic’s Fisheries. For example, in some inland cities, water can be allocated for industry or municipal growth without consideration of what those decisions mean for fisheries and other coastal needs downstream. How do you love your oysters?

2016 64

They’re Electric: Two New Fish Species Discovered in Gabon

Nature Conservancy - Science

This story begins like a typical fish tale: A guy is standing along a river, checking his bait for any takers. This wasn’t a typical fishing trip, either: the new species was collected on the Ogooué River of the Central African country of Gabon.

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Big Fish: Rodent-Eating Trout

Nature Conservancy - Science

By night, though, river monsters ruled : giant brown trout cruised the depths, occasionally surfacing to gulp down any hapless rodents that fell into the stream. Vole, it’s what’s for dinner. These three rodents were pulled from the stomach of a brown trout. Ralph Stewart photo.

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