Endangered

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Marine life

description

A newspaper magazine focusing on animals and wildlife

Transcript of Endangered

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EndangeredMarine

life

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By Chadden Hunter

For a king penguin, living in a tightly packed colony can get

pretty smelly so what better way to clean up than to do a spot of surfing.

King penguins are the sec-ond largest penguin in the world after the emperor penguin. Unlike emperors, kings rarely venture as far south as the sea ice but instead prefer to breed on sub-Antarctic islands and fish in warmer waters north of

the polar front. One of the largest king penguin

breeding colonies in the world (around a quarter of a million birds) is found at St Andrew’s Bay on the island of South Georgia. Chicks take over 12 months to rear and both parents need to alternate incubat-ing, fishing and guarding duties.

The year-round presence of hundreds of thousand of penguins means the colony grounds become filthy. Birds are forced to sleep, feed chicks, and waddle through stagnant pools of mud, excrement and dead penguin carcasses. Its no surprise that king penguins, like

most penguin species, like to go for a wash in the surf after spending time ashore.

Every morning thousands of adults can be seen rolling and splashing around in the breaking waves, preening the muck from their feathers.

In the past king penguins were harvested in massive numbers for their oil and some colonies were completely wiped out. Since the end of the major whaling industry however, their numbers have recov-ered and most populations appear to be growing at an annual rate of 5-15%.

Surfing Sub-Antartic style

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Did you know?Sea turtles, air-breathing reptiles with streamlined bodies and large flippers, are well adapted to life in the marine environment. They inhabit tropical and subtropical ocean waters throughout the world.

Although sea turtles live most of their lives in the ocean, adult females must return to beaches on land to lay their eggs. They often migrate long distances between foraging grounds and nesting

beaches.All 7 species

of marine turtles are listed under

the Endangered Species Act (ESA).

By Christopher Kemp

SAN JUAN, Puerto Rico (AP) – Soups, stews and pies flavored with chunks of sea turtle meat will soon be illegal across the 700 islands of the Bahamas, environmental activists and scientists said Sunday.

Despite opposition from many fishermen, the Bahamas has amended fisheries laws to give full protection to all sea turtles found in the Atlantic archipel-ago’s waters by banning the har-vest, possession, purchase and sale of the endangered reptiles, including their eggs. The new rules take effect this month.

‘’Young people here have never tasted turtle, but it had continued to be eaten by the older population in some of the outer islands,’’ said Kim Ara-nha, a member of a Bahamian conservation group that led the campaign to protect sea turtles. ‘’So we’re really happy our work has paid off with this ban; the turtles couldn’t do it themselves.’’

Previously, the Bahamian gov-ernment permitted

harvesting of all species of sea turtles except the hawksbill. Flesh had been used by restau-rants and shells for tourist keep-sakes despite turtles’ status as endangered species.

It’s impossible to gauge how many green turtles, loggerheads and other types were slaugh-tered each year in the Bahamas, but activists say counts of shells found in marina markets and information from fishermen indicate the haul was hefty.

‘’It has been an unrelenting catch,’’ Karen Bjorndal, who has long studied marine turtle populations at the University of Florida’s Archie Carr Center for Sea Turtle Research, said in a phone interview.

Bjorndal said the Bahamas’ shallow seagrass beds and reefs are prime foraging grounds for the big, slow turtles, so the fishing ban will help spur the regional recovery of the crea-tures, which are also threatened by pollution and development on beaches where they lay eggs.

The Bahamas Sea Turtle Con-servation Group has been pres-suring the government for about

two years to protect all sea turtle species, including distrib-uting bumper stickers reading ‘’Stop the Killing.’’

Not everybody is happy with the new rules. Opponents say eating turtle meat is a local tradition. Some local fisher-men – a handful of whom would regularly demand money from conservationists to free cap-tured turtles on display at mari-nas – argue they should be able to catch the migrating animals without any penalty.

Jane Mather, co-chairwoman of the conservation group who has received anonymous threats in recent weeks over the ban, said penalties are still being negotiated with the goverment but she hopes they will be ‘’quite serious.’’‘’Ninety percent of the Bahamian public don’t want turtles killed,’’ Mather said.

Bahamas Set to Ban Catch and Sale of Sea Turtles

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By David Adam

Animal, vegetable and mineral, a pristine tropi-cal coral reef

is one of the natural wonders of

the world. Bathed in clear, warm, water

and thick with a psych-edelic display of

fish, sharks, crustaceans and other sea life, the colorful coral ramparts that rise from the sand are known as the rainforests of the oceans.

And with good reason. Reefs and rainforests have more in common than their beauty and bewildering biodiversity. Both have existed for millions of years, and yet, now, both are poised to disappear.

If you thought you had heard enough bad news concerning the environment and considered that the situation could not get any worse, then steel yourself.

Coral reefs are doomed. The situation is virtually hopeless. Forget ice caps and rising sea levels: the tropical coral reef looks as if it will enter the his-tory books as the first large-scale ecosystem wiped out by our love

of cheap energy.A report from the Australian

government agency that looks after the nation’s emblematic Great Barrier Reef reported on Sept. 2 that “the overall outlook for the reef is poor, and cata-strophic damage to the ecosys-tem may not be averted.”

The Great Barrier Reef is in trouble, and it is not the only one.

Within just a few decades,

Destroyed by rising carbon levels, acidity, pollution, algae, bleaching and El Nino, keeping coral reefs alive would re-quire a dramatic change to the world’s carbon policy and farming methods. The situation is not good.

Coral reefs – going the way of the dodo

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Coral reefs – going the way of the dodo

experts are warning, the tropical reefs strung around the middle of our planet like a jeweled cor-set will reduce to rubble.

“The future is horrific,” said Charlie Veron, an Australian marine biologist who is widely regarded as the world’s foremost expert on coral reefs. “There is no hope of reefs surviving to even mid-century in any form that we now recognize. If, and when, they go, they will take with them about one-third of the world’s marine biodiversity.”

“Then there is a domino effect, as reefs fail so will other ecosys-tems. This is the path of a mass extinction event, when most life, especially tropical marine life, goes extinct,” Veron said.

Alex Rogers, a coral expert with the Zoological Society of London, talks of an

“absolute guarantee of their an-nihilation.”

And David Obura, another coral heavyweight and head of CORDIO East Africa, a research group in Kenya, is equally pessimistic.

“I don’t think reefs have much of a chance. And what’s happen-ing to reefs is a parable of what is going to happen to everything else,” he said.

These are desperate words, stripped of the usual scientific caveats and expressions of un-certainty, and they are a meas-ure of the enormity of what’s happening to our reefs.

The problem is a new take on a familiar evil. Of the billions of tonnes of carbon dioxide spewed from cars, power stations, aircraft and factories each year, about half hangs in the thin layer of atmosphere where it traps

heat at the Earth’s surface and so drives global warming.

What happens to the rest of this steady flood of carbon pollution? Some is absorbed

by the world’s soils and

forests, offering vital respite to our overcooked climate. The remainder dissolves into the world’s oceans. And there, it stores up a whole heap of trou-ble for coral reefs.

Often mistaken for plants, individual corals are animals closely related to sea anemones and jellyfish. They have tiny ten-tacles and can sting and eat fish and other small animals. Corals are found throughout the world’s oceans, and holidaymakers tak-ing a swim off the Cornish coast may brush their hands through clouds of the tiny creatures without ever realizing they have encountered coral.

It is when corals form commu-nities on the seabed that things get interesting. Especially in the tropics. Britain has its own coral reefs, but these deep-water natural constructions are remote, cold and dark, and frequently fail to fire the imagi-nation. It is in shallow, brightly light waters, that coral

reefs really come to life. In the turquoise waters of the

Caribbean, Indian Ocean and Pacific, the coral come together with tiny algae to make magic.

The algae do something that the coral cannot. They photo-synthesise, and so use the sun’s energy to churn out food for the coral. In return, the coral pro-vide the algae with the carbon dioxide they need for photo-synthesis, and so complete the circle of symbiotic life.

Freed of the need to wave their tentacles around to hunt for food, the coral can devote more energy to secreting the mineral calcium carbonate, from which they form a stony exoskeleton.

A second type of algae, which also produces calcium carbon-ate, provides the cement. Together, the marine menage-a-trois make a very effective build-ing site, with dead corals leaving their calcium skeletons behind as limestone.

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Bonneville Dam sea lions face cages or sharpshooters

By Tim Holiday

Wildlife officials will resume trapping of salmon-eating California sea lions at Bonneville Dam as soon as Monday.

But this year, unlike last, they have a license to kill.

The state Department of Fish and Wildlife has a hit list of 73 sea lions that habitually prey on endangered fish below the Columbia River dam and aren’t dissuaded from din-ing by hazing tactics.

So far, officials only have enough homes lined up to relocate eight sea lions. If the Bonneville banquet resumes in the coming weeks as spring chinook begin to return from the ocean, many could be killed.

During the past two decades, increasing num-bers of male California sea lions have arrived be-low the dam to feed on salmon making their way upriver. Fishers curse

them for stealing salmon off their hooks, while animal welfare activists deplore the sanctioned killing of one species to aid another. Government agencies invested in the region’s multibillion dollar salmon recovery program are caught in the middle.

A federal appeals court raised the stakes Thurs-day when it denied a re-quest from the Humane Society of the United States to block Washing-ton, Oregon and Idaho from killing as many as 85 sea lions a year.

“As of this point they have permission to go out there and start killing,” said Sharon Young, ma-rine issues field director for the Humane Society of the United States.

Under authority granted to the three states by NOAA Fisheries Service, the protected pinnipeds can only be killed if they eat endangered

fish, don’t respond to hazing and can’t be relo-cated, said Robin Brown, marine mammal program manager for the Oregon Department of Fish and Wildlife.

Officials on Monday can start to trap such sea lions and take them

to an unnamed loca-tion to be euthanized by lethal injection. But if a problem sea lion won’t go into one of the float-ing cages, it can be shot so long as it is on shore or within 50 feet of it, Brown said.

A sharpshooter from the Washington Depart-ment of Fish and Wildlife would use a shotgun or high-powered rifle, depending on the range, and the bodies would be “recovered imme-diately,” said Richard Hargrave, Oregon Fish

and Wildlife spokes-man.

Brown said they anticipate relocating or killing about 30 animals this

year.

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The number of sea lions at Bonneville has risen from a handful in the early 1990s to more than 100 last year, and they are arriving at the dam earlier and earlier, some as soon as September, ac-cording to the U.S. Army Corps of Engineers, which runs the dam.

The corps estimates the sea lions eat 0.4 to 4.2 percent of the run, which will soon be under way and is forecast to be rela-tively strong this year.

Commercial and sport

fishing on the river, by contrast, can pull about 13 percent of the run from the river. The dif-ference, officials say, is that fishers mostly kill salmon reared in hatch-

eries, while sea lions don’t discriminate

between hatchery fish and their wild cousins.

On Friday, federal, state and tribal officials were at the dam to

explain how they planned to contend with sea lions this spring. They started hazing operations last month, using firecrackers or rubber pellets to shoo away sea lions, but those have proven to be only temporarily effective.

There are already six or seven sea lions on site, and occasionally they could be seen surfacing with a fish in their mouth

as birds circled and picked at the detritus.

Brown explained how two traps moored near Cascade Island below the dam are fitted with mag-netic locks this year.

Last spring, six sea lions, including two endangered Steller sea lions, died inside traps after the doors mysteri-ously locked them inside. These traps will be locked open when not in use and monitored hourly when they are, officials said. Then it was time to show off the magnetic doors. Brown counted down.

“Three, two, one,” he said, clicking a trans-mitter around his neck. Nothing happened.

“That’s typical,” he said later, explaining the transmitter was faulty and another one wasn’t readily available. “We tested it about 10 times yesterday and it always worked.”