Showing posts with label nuclear power. Show all posts
Showing posts with label nuclear power. Show all posts

Thursday, November 15, 2012

Conservation Victories: government steps up to help whales, sharks, and birds

Well, how about some good news for a change?  Conservation and protection of species and the environment got a bit of a boost from the machinations of government today in several areas.  Some of these advances are moving through cyberspace as I write this, while others are more quiet victories.

No Sonic Tests Off California for Utility
The California Coastal Commission today unanimously agreed to deny a permit to Pacific Gas & Electric, who had requested to begin a series of seismic tests using sonic air cannons to determine fault lines in and around the seafloor near the Diablo Canyon nuclear power plant.

Now checking for faults that could potentially threaten a nuclear power plant isn't a bad idea (nuclear power plants themselves are another controversial subject for another day) and PG&E officials claimed that the multiple sonic blasts would be ramped up in intensity to warm or scare off any marine mammals that could be at risk.

However, those same officials also stated that the tests would induce short-term disruption.  And given the number of beachings and deaths that have been documented regarding whales, porpoises, and dolphins, long-term effects can not be definitively ruled out.

According to the Associated Press, the coastal commission's staff recommended to the coastal regulators to reject the utilityy company's plan. "In a report this month, the staff said sonic blasts would cause 'significant and unavoidable impacts to marine resources.' More than 7,000 sea mammals would be disturbed by the ear-piercing noise, including fin whales, blue whales, humpback whales, and harbor porpoises."

PG&E has not yet said what it plans to do next, but should they appeal, they will find stiff resistance from many of the regulators.

Win one for the cetaceans!

American Samoa Bans Shark Fishing
In the South Pacific, the United States' unincorporated territory of American Samoa has initiated a ban on all shark fishing that will go into effect this week.  The ban will extend three miles from the shoreline and also include three reef fish species.

What is most encouraging with this news is that it was not an island nation like Palau or Kiribati that has imposed these restrictions; it was the U.S. government.  The Department of Marine & Wildlife Resources is the agency that has imposed the ban, recognizing the decline of shark populations throughout the Pacific Ocean.

Dog Fenner, who monitors sharks for the department, claims that these new regulations are the strongest ever imposed by the U.S.  About bloody time.

Win one for the sharks!

Animal Lead Poisoning Amendments
Getting a little less attention are two amendments to S.B. 3525, known as the "Sportsman's Act."  Filed by California's Senator Barbara Boxer, the amendments would 1.) eliminate an NRA-supported provision in the Sportsman's Act that banned the Environmental Protection Agency from doing anything regarding lead poisoning from lead ammunition and fishing tackle (originally supported by, and 2.) require the EPA to conduct a potential threat study of human health, wildlife, and the environment regarding lead ammunition and tackle.

According to the Conservation for Biological Diversity, which has been prodding the EPA regarding this issue for years, "Lead poisons and kills millions of eagles, loons, endangered California condors and other birds and wildlife each year." 

Win one (hopefully) for a lead-free wilderness!

The common thread in all of these encouraging developments is that it represents government, in one form or another, getting of its butt and doing something about the environment.  One can only hope that as the U.S. economy improves, attention will once again be turned toward solving long-term environmental issues with decisive action in the here-and-now. 

Source: Associated Press (Cetacea)
Source: Washington Post (Sharks)
Source: Center for Biological Diversity (Lead)

Thursday, December 8, 2011

A Tragedy of Errors: the fate of lionfish, moon jellies, and groupers are intertwined

What do lionfish and moon jellies have in common? In Florida, it's the goliath grouper. And what links these three sea creatures together is our ability to meddle with the balance of nature.

I have written about lionfish, moon jellies, and groupers in the past (Click here for lionfish, here for jellies, and here for groupers). The lionfish is a beautiful and graceful addition to any South Pacific reef where it exists as a predator that keeps reef fish communities in balance. As an invasive species to Florida and the Caribbean (possibly inadvertently introduced in the early 90's), the lionfish is a voracious predator with an enormous appetite and their numbers have exploded in recent years, posing a significant threat from Florida throughout the Bahamas to reef ecosystems unprepared for such a hungry eating machine.

Sea jellies, or jellyfish, are also beautiful and graceful, but the yin to their yang is the powerful sting in the tentacles of many species, an ability that is used for hunting and feeding rather than as some sort of offensive or defensive weapon. In recent years, scientists have been seeing a
greater number of sea jelly "blooms" - huge congregations that some believe are the result of warming temperatures due to climate change or, possibly, a lack of common predators like turtles, tuna, and sharks. For scientists, the jury is still out as to a definitive cause but the anecdotal observation is that sea jelly blooms are being reported with greater frequency.

The goliath grouper, capable of reaching up to a massive 800 pounds, is one of Florida's apex predators, right up there with sharks, billfish, and the other denizens of the deep that nature has entrusted to maintain equilibrium between predators and prey. Unfortunately, the goliath grouper was also a prized catch for sportfishermen and commercial operators and so their numbers declined rapidly over the past few decades. Listed as critically endangered in Florida waters by the International Union for the Conservation of Nature (IUCN), in 1990 Florida imposed restrictions on the taking of any goliath grouper. However, like sharks and other apex predators, the grouper's slow reproductive rate has meant a slow recovery and a typical large grouper is currently in the 200-pound range if you're lucky to see one.

So what is the common thread between the three? Well, the goliath grouper would be an ideal candidate to serve as an exterminator of lionfish, if there were only sufficient number. The loss of the grouper to overfishing, combined with the invasion of lionfish due to, well, our thoughtlessness has left the reef communities of Florida and the Caribbean with a real threat on their hands and without a natural defender. This makes the loss of even one grouper a critical one to the marine ecosystem. Then, what about the loss of up to 75 groupers? Seventy-five groupers gone due to moon jellies. Moon jellies, you say?

That's just what happened this past August in the surrounding waters at the St. Lucie nuclear power plant near Ft. Pierce in southeast Florida. A swarm of moon jellies inundated the seawater intake to the plant, causing a shutdown that lasted two days. With thousands of moon jellies plastered up against intake grates, the jellies' delicate tentacles broke off and traveled through the plant's seawater pipes to be expelled back out to sea where they apparently came in contact with a school of groupers, stinging and inflaming their gills. Biologists, who happened to be at the plant overseeing the facility's turtle protection program, were only able to save ten of the groupers before having to leave the water themselves due to multiple stings from the floating fragments of tentacles.

The end result was the loss of several tons of goliath groupers - predators desperately needed to combat the growing army of lionfish. This is often the result when natural resources are abused: not one problem, but a series of overlapping causes and effects. And the common thread was mankind. The cascading effects of our actions when we choose to consume rather than conserve could be our lasting legacy to this planet unless we act now.

Here's a brief video of moon jellies which shut down a nuclear power plant in Israel.