Tag: oceans

Sea Levels Threaten Coastal Towns (Part Two)

  • A living shoreline near the Chesapeake Bay in Maryland. The native grasses and sandy shore provide habitat for terrapins, the University of Maryland mascot. (Photo by Tamara Keith)

Scientists are pretty certain climate change is going to cause the sea level to rise. It’s
happening already, actually. In communities around the Chesapeake Bay, people are
getting a sneak preview. Tamara Keith reports some people there are trying to work with
nature rather than resist it:

Transcript

Scientists are pretty certain climate change is going to cause the sea level to rise. It’s
happening already, actually. In communities around the Chesapeake Bay, people are
getting a sneak preview. Tamara Keith reports some people there are trying to work with
nature rather than resist it:

(sound of kids planting)

It’s been raining in Woodland Beach. The community is just off of the Chesapeake Bay
in Maryland. The ground here is so soft you sink into it. Mud is everywhere. And that’s
just fine with the volunteers planting native grasses on a sloping hillside.

Stephen Hult is trying to keep things in order.

“And when we plant them we want them all the way down. I’m telling everyone twice.”

Hult heads up shoreline restoration projects for the local property owners association.
And there’s a lot of shoreline to restore.

“The shoreline, in parts of the community since the 1930s, have eroded 20 feet. Year to
year, one barely notices, but if you look at aerial maps of what it used to be like
compared to what it is, it really is quite dramatic.”

There’s been tons of erosion here. The land all along the mid-Atlantic coast is also
slowly sinking. Combine that with global sea level rise and you get erosion in overdrive.

Hult says the community is trying to restore the beach with rock and dirt and sand and
grasses to hold it all together. This is what’s called a living shoreline.

“We have now, with this project it will be well over half a mile of living shorelines that
we’ve installed.”

It’s a relatively new concept, a more natural approach to the gnawing problem of
shoreline erosion. Living shorelines create buffer between the water and homes. They are
kinda like the tidal wetlands that used to be here – before property owners started building
sea walls, also called bulkheads.

Jana Davis is associate director of the Chesapeake Bay Trust. It’s one of the organizations
funding this shoreline restoration. And Davis also happens to live here.

“It’s a wonderful alternative that provides just as good shoreline protection while also
providing a lot of really important habitat benefits that a bulkhead or rock sea wall does
not provide.”

Good for wildlife, and she says, it’s adaptive in the face of sea level rise.

“If sea level were to rise another foot, for example. The marsh could kind of migrate
inland, whereas if you had a bulkhead obviously there’s no migration because it can’t
move.”

But most of the people with bulkheads are NOT buying it. They want to protect their
property from the sinking land and rising water, and a lot of them don’t think a bunch of
rocks and grass are going to cut it.

Kevin Smith is chief of restoration services for the Maryland Department of Natural
Resources.

“There’s many places you can go and look at miles of shoreline and not see any natural
shoreline at all. It’s all armored off.”

Smith met me at a nature center along the bay. A few years ago, a stretch of bulkhead
here was replaced with a living shoreline. The natural ebb and flow of these shorelines
has made some property owners skeptical. They want the shoreline to stay put.

“If these types of projects don’t protect that shoreline from erosion, then homeowners are
not going to want to do it.”

But Smith insists these projects do work, and long term they’re going to be more
sustainable and more flexible than bulkheads – which over time will lose the battle
against the constant pounding of the rising sea.

For The Environment Report, I’m Tamara Keith.

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The Case of the Disappearing Dolphin

  • A false killer whale, which is actually a type of tropical dolphin, with calf (Photo by Deron Verbeck, courtesy of iamaquatic.com)

Commercial fishing in the oceans of the US has done a lot to reduce
accidentally catching marine mammals such as dolphins. But there are
still problems. Ari Daniel Shapiro reports on concerns about one kind
of tropical dolphin called the false killer whale:

Transcript

Commercial fishing in the oceans of the US has done a lot to reduce
accidentally catching marine mammals such as dolphins. But there are
still problems. Ari Daniel Shapiro reports on concerns about one kind
of tropical dolphin called the false killer whale:

Jim Cook has been a fisherman in Hawaii for 18 years.

“You know, it used to be real simple: catch a fish, sell it, and go
back out and try and catch another one.”

Now he owns a company that operates six fishing vessels. Cook’s
ships catch deep swimming sashimi-grade tuna that ends up in sushi
restaurants across the US. They use a technique called longline fishing.

“We have around 45 miles of mainline to which we attach floaters
and 2200 to 2500 baited hooks.”

“The regulations imposed on the Hawaii longline fishery are
probably the most restrictive regulations on any longline fishery in the
world.”

That’s Bill Robinson. He’s an administrator with the National
Marine Fisheries Service. And these regulations he’s talking about are
meant to reduce bycatch. That means catching marine animals other than
the tuna. As a result of these policies, sea turtle bycatch has dropped
by more than 90-percent and seabird bycatch by 95-percent.

Things are looking up, but now there’s another problem. The numbers of
another kind of animal – the false killer whale – are declining. No one
knows why they’re disappearing. It might be related to longline
fishing, but it’s just not clear.

Robin Baird’s a biologist with Cascadia Research.

“There’s a whole variety of lines of evidence that imply the false
killer whale population around the main Hawaiian islands has declined
dramatically over the last 20 years. And I think it’s clearly the most
serious conservation or management issue for whales and dolphins in
Hawaiian waters today.”

Baird thinks the decline is partly related to fewer numbers of tuna
and other species false killer whales eat. He also suspects that the
false killer whales might be moving farther offshore, where they could
get hooked when trying to eat the tuna caught by the longline fishery.

So the question is: should the National Marine Fisheries Service come up
with even more regulations for the longline fishery in case more false
killer whales move offshore looking for tuna.

Bill Robinson with the Fisheries Service isn’t so sure that they
actually go that far offshore.

“That’s speculation, and it may or may not be true. What we
don’t really know is what the range of each population is.”

So, really, at this point, it’s anyone’s guess why the false killer whale numbers are declining.

The biologist, Robin Baird, is concerned that nothing’s being done.

“Unless something is done to change the factors that are
influencing the population, it probably will continue to decline.”

The environmental group Earthjustice and a coalition of
conservation groups have sued the National Marine Fisheries Service over
failing to develop a plan to protect the false killer whales.

The agency has not responded officially to the lawsuit yet. But Bill
Robinson says an action plan is in the works.

“Hopefully by the fall, we’ll be able to not only appoint the
team, but have the team begin work on a take recovery plan that will
make recommendations to the agency to reduce the incidental take of
false killer whales in the fishery.”

Such a plan might end up costing the commercial fishers money. But
Jim Cook says he’s willing to pay. That’s because false killer whales
pick fish off his lines. They eat the caught tuna before the fishers
can haul them in. That can mean a lot of lost income.

“We would very much welcome any methodology almost
irrespective of cost because we’re suffering quite a bit economically as
it is.”

But the National Marine Fisheries Service first has to find that
methodology.

For The Environment Report, I’m Ari Daniel Shapiro.

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Tuna Farming in the Ocean

  • They call the cages Oceanspheres. They’d have the diameter of half a football field. (Photo courtesy of Hawaii Oceanic Technology)

A company in Hawaii wants to build the world’s first commercial bigeye tuna farm. Bigeye tuna is also known as ahi and it’s a popular fish for sushi. Rebecca Williams has more:

Transcript

A company in Hawaii wants to build the world’s first commercial bigeye tuna farm. Bigeye tuna is also known as ahi and it’s a popular fish for sushi. Rebecca Williams has more:

Bigeye tuna are getting overfished in the wild.

So a company called Hawaii Oceanic Technology wants to raise tuna in giant underwater cages off the coast of Hawaii.

They call the cages Oceanspheres. They’d have the diameter of half a football field.

Bill Spencer is president and CEO of the company. He says they’ll raise 20,000 fish in each cage. The tuna will get up to 100 pounds each.

“They’re typically a schooling type fish so they’d be able to swim around in the Oceansphere so we think that would give them the ability to get the kind of muscle tone that would be appreciated by the consumers.”

There are real concerns about pollution and that fish will escape and spread disease to wild fish.

Spencer says ocean currents will sweep away fish feces so they won’t concentrate, and he says the cages are built so tuna can’t escape.

For The Environment Report, I’m Rebecca Williams.

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Hurricane Season Is Here

  • Monday, June 1 is the official start day of hurricane season (Photo courtesy of NASA)

Today is the first day of the Hurricane season,

but we’ve already seen a tropical depression off

the Atlantic coast. Lester Graham reports:

Transcript

Today is the first day of the Hurricane season, but we’ve already seen a tropical depression off the Atlantic coast. Lester Graham reports:

The Weather Channel noted that tropical depression was farther North earlier than any potential hurricane in the 159 years of storm records.

You can’t help but wonder whether climate change is having an effect here.

Jeff Masters is a former hurricane hunter, now with Weather Underground.

He says that’s not what’s happening. He says this storm was getting stronger by following the the gulf stream.

“There just happened to be a little blip of warm water associated with the gulf stream that this storm took advantage of. It was a very small storm so it was very lucky. It was able to stay over the warmest part of the gulf stream.”

Masters says it’ll be decades before we’ll be able to tell if climate change is actually affecting hurricanes.

Forecasts this year call for a pretty average hurricane season.

Masters says an El Niño event could occur later. That’s important, since the number and intensity of Atlantic storms are usually reduced during an El Niño year.

For The Environment Report, this is Lester Graham.

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Rare Right Whale Recorded

  • Only two Right Whales have been spotted in the last 50 years off the southern tip of Greenland (Photo courtesy of NOAA)

Scientist think they’ve found
a rare whale in a place where
they thought they were wiped
out. Sadie Babits reports,
they haven’t seen the whale
but they’ve heard it:

Transcript

Scientist think they’ve found
a rare whale in a place where
they thought they were wiped
out. Sadie Babits reports,
they haven’t seen the whale
but they’ve heard it:

Scientists thought the North Atlantic Right Whale
was gone. Only two of them have been spotted in
the last 50 years off the southern tip of Greenland.

But some underwater microphones picked up right
whale calls.

“They sound like mmmmmmick… kind of like that.”

That’s David Mellinger. He teaches at Oregon State
University.

He says they recorded more than two
thousand right whale calls in a year. That doesn’t
mean there are a lot of the whales, but Mellinger
says hearing any in the North Atlantic is significant.

“Because the population is so endangered. There
are only 300-350 maybe right whales in the world.
So finding any new whales is important.”

But there is a concern. As the Arctic Ice Cap
melts because of global warming, more ships are
expected to pass through the area. That could
mean ships could strike and kill the few right
whales that are left.

For The Environment Report, I’m Sadie Babits.

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Big Ships Dump Oil Into the Ocean

  • Ships dump 88 million gallons of oil into the ocean illegally each year - that's eight times the amount of the Exxon Valdez oil spill (Photo source: Vmenkov at Wikimedia Commons)

Each year, ships intentionally dump millions of gallons of oil into the oceans. Rebecca Williams reports everything from cruise ships to cargo ships to oil tankers have been caught:

Transcript

Each year, ships intentionally dump millions of gallons of oil into the oceans. Rebecca Williams reports everything from cruise ships to cargo ships to oil tankers have been caught:

Ships have all kinds of mechanical parts that use oil.

The ships are supposed to collect the waste oil and separate it out, but it turns out a lot of ships just dump it overboard.

Stacey Mitchell is chief of the environmental crimes section at the Department of Justice. She says some estimates are all this oil adds up to about 88 million gallons a year.

That’s eight times the amount of oil spilled by the Exxon Valdez. And those are just the ships they catch.

“As we do more and more of these enforcements the crews on board these vessels who are trying to defeat our purposes are getting craftier and are coming up with new ways to commit this crime and new ways to conceal it.”

Mitchell says it takes time and costs money to separate the oil the way you’re supposed to, and so they might think the chance of getting caught might be worth the risk. Though if you are caught, the fines can be in the millions of dollars.

For The Environment Report, I’m Rebecca Williams.

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Bringing a Fish Back From the Brink

  • The American Shad became so rare that hatcheries had to help restore depleted populations (Photo courtesy of the US Fish and Wildlife Service)

A million year old cycle of fish migration almost came to an end in the waters off of the nation’s capital. But a monumental conservation effort has brought them back from the brink. Sabri Ben-Achour explains:

Transcript

A million year old cycle of fish migration almost came to an end in the waters off of the nation’s
capital. But a monumental conservation effort has brought them back from the brink. Sabri Ben-
Achour explains:

I bet you can’t recognize this sound.

It is the sound of a female shad – it’s a type of fish – having its eggs squeezed out into a metal
bowl.

“In the bowl, it looks like applesauce.”
That’s biologist Catherine Lim. We are on a boat in the middle of the Potomac, 20 miles south of
Washington DC, harvesting and fertilizing shad eggs. Lim picks up a male shad and gives it a
squeeze.

“Yeah, he sprayed out there.”

She mixes the brew around and adds water.

“We’ll bag them up and send them to the fish hatchery.”

This is all part of an effort to restore the population of the American Shad. For millions of years,
the large silver-iridescent fish have swum in from the Atlantic and up the rivers of the East Coast
every spring to spawn. They return to the same place where their lives began, guided by a
unique geological odor that seeps from the earth and mountains that feed each river.

Once upon a time – only a century ago – these fish were so numerous they turned the water silver
and made rivers move.

At least that’s what Jim Cummins says, he’s a biologist.

“On the Susquehanna, there were so many of them they created a wave as they came up the
river, a standing wave.”

On the Potomac they fueled entire industries. According to newspaper reports, Washington DC
exported 4 million barrels of salted shad every year in the 1840’s.

“The wagons would come into Georgetown were so heavy that they crammed up the city – I think
it’s the first report of gridlock in Washington.”

The fish fed more than just commerce – they nourish everything from crabs to dolphins. Bald
Eagles actually evolved to time their egg laying early, so their chicks would hatch just as the Shad
and their relatives appeared in the river. And then came overfishing, dams, and pollution.

“In the 1960’s, there were times when the migratory fish came up to spawn in the area and met
that pollution, and hundreds of thousands of them died and made a stinking mess.”

The clean water act was passed in 1972, but by 1980, the fish were almost wiped out. A
moratorium on fishing at the time was too little too late. Water quality gradually improved as
waste water treatment plants were upgraded and aquatic grasses returned. But still, no Shad.

So Cummins began the Shad restoration project.

They had to use several nets – each hundreds of feet long – just to catch one fish. They got help
from fisheries and even elementary schools. Dams were fixed to let fish go around them. The
Shad population exploded.

At a boat house just outside of DC, anglers Steve Bocat and Louis Covax are enjoying success
that up until recently, few alive have seen here.

“It was great we had incredible fishing. I mean, between the two of us, we had, what, 50-60 fish
up to the boat?”

Another sign of success, a pair of Bald Eagles recently returned to the area following the fish –
the first in decades.

For The Environment Report, I’m Sabri Ben-Achour.

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Who’s to Blame for the Dead Zone

  • It is predicted that the dead zone in the Gulf of Mexico is the size of the state of Massachusetts (Photo courtesy of NASA)

About 40% of the continental U-S drains into the Mississippi River. It sends water – and pollution – from across the country into the Gulf of Mexico. A new study shows just who the worst offenders are. Gabriel Spitzer has the story:

Transcript

About 40% of the continental U-S drains into the Mississippi River. It sends water – and pollution – from across the country into the Gulf of Mexico. A new study shows just who the worst offenders are. Gabriel Spitzer has the story:

All the pollution creates a dead zone in the Gulf nearly the size of New Jersey.

Nitrogen and Phosphorus pour in and fertilize big algae blooms.

When that stuff decays, it sucks oxygen out of the water, and makes it impossible for most fish to live there.

US Geological Survey researchers say most of the problem comes from farm runoff, but the single biggest source is sewage from Chicago.

Albert Ettinger with the Environmental and Law Policy Center says Chicago water managers have to catch up with their neighbors.

“They’re gonna have to look at treatment systems which take nitrogen out of the water, and bring phosphorus down to one milligram per liter. It’s done in Milwaukee, it’s done in Cleveland, it’s done in Detroit.”

Chicago’s Metropolitan Water Reclamation District say they haven’t had a chance to look closely at the study yet, so they don’t want to comment on it.

But they don’t like being singled out.

For The Environment Report, I’m Gabriel Spitzer.

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The Legacy of the Exxon Valdez

  • A NOAA scientist surveying an oiled beach to assess the depth of oil penetration soon after the spill (Photo courtesy of NOAA)

Twenty years ago this week, an oil tanker ran aground on a rocky reef in Alaska’s Prince William Sound. The Exxon Valdez spilled more than 11 million gallons of crude oil. It’s considered to be perhaps the biggest ecological disaster in US history. Ann Dornfeld has this look at how oil spill prevention and preparedness have changed in the two decades since Valdez:

Transcript

Twenty years ago this week, an oil tanker ran aground on a rocky reef in Alaska’s Prince William Sound. The Exxon Valdez spilled more than 11 million gallons of crude oil. It’s considered to be perhaps the biggest ecological disaster in US history. Ann Dornfeld has this look at how oil spill prevention and preparedness have changed in the two decades since Valdez:

The call came in just after midnight.

“Ah, evidently leaking some oil and we’re gonna be here for a while.”

Court records indicate Captain Joseph Hazelwood was likely drunk when the Exxon Valdez ran aground.

There was hardly any clean-up equipment on hand. No plan for action. The location was remote.

Oil polluted a stretch of Alaskan coastline the length of the entire west coast of the U.S. The oil killed fish, sea otters, harbor seals and an estimated quarter of a million birds. Today, there is still oil on some beaches.

Twenty years later, a cargo vessel has just reported a spill of 160
gallons of oil in Washington state’s Commencement Bay. Investigators
have filled the “Spill Situation Room” in the state Department of Ecology.

“Who’s responsible for actually maintaining
the bow thruster, when was the last time they performed maintenance on it?”

“You mean one of the staff on board?”

“Yeah.”

Spill Response Manager David Byers says coastal states learned a lesson from Exxon Valdez, and developed rapid response systems like this.

“We’ve got crews headed up in a helicopter to do on-
water observations, we’ve got response resources on the water headed out to do containment when we find the location of the oil.”

Byers says the state handles dozens of spills this size each year, making it somewhat of a well-oiled machine.

After the Exxon Valdez, the state of Washington put in place some tough prevention standards. But the U.S. Supreme Court ruled against the state.

The court ruled the state was making safety demands of oil companies that only the federal government could make.

Mike Cooper is Chairman of the state’s Oil Spills Advisory Council. He says that ruling is one reason why small oil spills are common in Washington’s bays. He says other states have come up against the same restrictions.

“When the Massachusetts legislature passed strict laws,
the United States Coast Guard and the industry did the same thing that they did to the people of Washington state. They sued the people of the state of Massachusetts and said, ‘We’ll decide if industry has to pay.'”

The federal Oil Pollution Act did raise industry’s liability and the amount of federal money available in the event of a spill. It also requires oil tankers and barges in U.S. waters to be double-hulled by 2015. The Exxon Valdez’ single hull was easily gouged open when it ran aground.

Today, most U.S.-flagged tankers and barges are double-hulled. Most foreign tankers aren’t yet.

But there’s no law requiring a second hull on cargo ships. Bruce Wishart is Policy Director for People for Puget Sound. He says it’s cargo vessels that are most likely to spill oil.

“It’s commonly assumed that oil tankers pose the
single greatest threat in terms of an oil spill. There are actually many, many more cargo vessels plying our waters that pose a very significant risk simply because they carry a lot of fuel on board.”

In 2007, the cargo vessel Cosco Busan spilled 53,000 gallons of oil into San Francisco Bay. Thousands of birds died, including endangered species. A fully-loaded cargo ship can contain 40 times more oil than what leaked from the Cosco Busan.

So, while oil tankers have become safer in the two decades since the Exxon Valdez, the nation’s waterways still remain at risk of a major spill.

For The Environment Report, I’m Ann Dornfeld.

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Opening Up New Waters for Whale Hunts?

  • Mother-calf pair of "Type C" orcas in the Ross Sea. (Photo by Robert Pitman, NOAA)

Japan kills more whales than any other country in the world. A new proposal would allow Japanese whalers to hunt off their county’s coasts. Mark Brush reports – some think opening up these waters to whale hunts is a bad idea:

Transcript

Japan kills more whales than any other country in the world. A new proposal would allow Japanese whalers to hunt off their county’s coasts. Mark Brush reports – some think opening up these waters to whale hunts is a bad idea:

The International Whaling Commission passed a moratorium on commercial whaling in 1986. But it allowed some countries to kill whales for what it calls scientific study.

Japanese boats kill hundreds of minke whales in the southern ocean under this designation. Critics say there’s nothing scientific about these hunts.

Now, the Commission wants to stop Japan from killing whales in the southern ocean. Phasing out these so-called scientific whale hunts. But in exchange, they might let the country openly hunt whales off its own coasts.

Jonathan Stern is with the American Cetacean Society. He says whale populations could take a hit, if Japan is allowed to start hunting in these waters:

“I’m just afraid once their fleet starts operating. They’re going to want to take more whales and more different species of whales.”

Japan has long maintained that these hunts are part of their cultural heritage. The International Whaling Commission will meet next month to decide the issue.

For the Environment Report, I’m Mark Brush.

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