Saturday, July 31, 2010

Grand Lake, Ohio - Update


Governor unveils lake plan: Strickland notes solution will take a long time
Saturday, 31 July 2010

By Mike Burkholder

Staff Writer

CELINA — In what turned into a contentious news conference, Ohio Gov. Ted Strickland unveiled a plan Friday to help address the ailing water of Grand Lake St. Marys.
Strickland was joined during the news conference by Ohio Environmental Protection Agency (EPA) Director Chris Korleski, Ohio Department of Natural Resources (ODNR) Director Sean Logan, Ohio Department of Agriculture (ODA) Director Robert Boggs and Ohio Department of Health Director Alvin D. Jackson.

The visit was Strickland’s first to the region since an algae bloom in June sparked a new water quality advisory for the lake, which has since been upgraded to encourage residents to avoid boating or eating fish caught in Grand Lake St. Marys.
“For many years, this community has watched a beautiful natural resource deteriorate,” Strickland said during his opening remarks. “Businesses have struggled, homes have lost value and families have lost the opportunity to create memories together.”
Strickland wasted no time in describing the dire situation of the lake. The governor admitted the water is toxic. He also stressed the importance of adhering to the current water advisory.
“At this time, the lake is not healthy for humans or animals to enjoy,” Strickland said. “There are toxins in this water right now that could be dangerous to your health and could damage your neurological system. We urge common sense and caution as we continue to warn residents and visitors about the health risks of the toxins in this water. It is difficult to say and even more difficult to hear, but please do not go in or on this lake at any time.”
Strickland said the lake’s current situation did not happen overnight, noting it took years of degradation.
“This crisis has been generations in the making and it will take all of us and future generations working together to try and restore this lake and community to health and prosperity,” Strickland said.
Korleski and Logan each revealed a portion of the plan regarding the two main sources for the blooms — internal and external loading.
Korleski warned that despite the outcry for immediate action, there is no solution that can fix the lake overnight.
“There is no silver bullet, there is no magic wand, there is nothing that we can do that we are aware of to turn this situation around quickly,” Korleski said. “This has been years in the making, it’s not going to be quick and not going to be easy.
“But is it hopeless,” he said, “I’m not convinced that it’s hopeless and we are going to work to say the least, very aggressively, to see if we can turn this lake around.”
Korleski said officials plan to combat internal loading — the amount of phosphorous currently in the lake — by instituting a series of pilot projects.
Among the first is a pilot project using alum treatments in yet to be identified areas in the 20 to 40 acre range. The target date for the pilot alum treatments is September, with a price tag of $250,000 to be paid via the Ohio EPA and ODNR. Korleski said while the treatments have been successful in other lakes across the world, alum has never been tested on a lake the size of Grand Lake St. Marys.
“When you add alum you have to monitor it very carefully because if you don’t properly monitor it you can end up screwing up the pH in the lake, which can have an overall negative impact on the lake,” Korleski said. “You have to be very careful.”
Korleski said if successful, the entire lake could see an alum application. That treatment would cost $5 to $10 million.
“That’s where we would want to go,” Korleski said. “I think it’s safe to say that we will try to leave no stone unturned.”
The second pilot project has to do with attempting to replace the cyanobacteria with non-harmful algae called diatoms that are capable of being harvested for energy generation purposes. Korleski described the method as “algae flipping.”
“A diatom is a normal, healthy algae that doesn’t damage the lake,” Korleski said. “The idea is if we can encourage them to grow, and they begin to use the nutrients, if we are creating an environment that is very condusive for the diatoms, then they will out compete the cyanobacteria and thereby reduce the population of cyanobacteria. Again, this has never been tested, to our knowledge, in the United States, certainly
See LAKE, 9A
it hasn’t been tested on a lake of this size.”
Dredging the entire lake, Korleski said, is cost prohibitive. Doing so would cost more than $100 million.
Instead, he said specific areas could be targeted to reduce the amount of sediment pouring into the lake.
“We do think dredging can be employed on a spot basis,” Korleski said. “Primarily we would like to employ dredging on area where feeder streams are coming into the larger body of water because that is where in large part, you are getting accumulation of phosphorous carrying sediment. If you can scoop that out at the source, you can minimize the amount of phosphorous that’s getting into the internal loading cycle.”
Other actions include the creation of wetlands as well as studying the feasibility of adding AiryGators around the lake. The devices help increase oxygen levels in the lake.
Korleski also pleaded with residents to stay out of the water until the situation is resolved.
“We understand the economic impact this is having on the community,” Korleski said. “We have to be very, very, very protective of public health. It is our belief that there are levels of toxins in this lake that can be very harmful to your health.”
Logan said external loading, which includes phosphorous introduced into the lake via agriculture run-off, septic systems and lawn fertilizers, is an issue in the watershed.
To combat the issue, Logan said new rules outlining the application of manure to frozen ground as well as requiring manure nutrient management plans will be instituted.
“These are some items that have been talked about for a number of years,” Logan said of the management plans. “That is where we can have the biggest bang for our buck.”
Logan explained the new regulations will be phased in during the next few months.
During the question and answer session, members of the public interjected while the officials were addressing the media. Comments ranged from why no action is being taken immediately to help the businesses impacted by the advisory to if the toxins pose health risks by simply breathing in the air surrounding the lake.
Laura Jenkins, the wife of Dan Jenkins who recently fell ill and it is believed there is a link to the toxins found in the lake, addressed Strickland regarding what can be done to help prevent human illnesses from the lake.
Strickland said he would work with the Jenkins family to make sure they receive the proper medical treatment and care needed during Dan Jenkins’ recovery.
Following the news conference, Strickland spoke with the Jenkins family in private.
“We do know there have been a number of pets that have died,” Strickland said. “There is no scientific link that we can point to but it is very likely that the lake water was the result of their deaths. So that’s why we are so terribly concerned. We understand the significance of saying please have no contact with the water. The last thing any of us would like to see happen would be another individual like Mr. Jenkins, become sick as a result of the contact with this water. That must be the primary concern.”
Jackson addressed concerns regarding potential health risks associated with the toxins found in the lake. Jackson warned against coming into contact with the water as well as any spray from the lake.
“What we know is that the liver toxins and the neurotoxins are some of the most potent toxins known and there are currently no antidotes,” Jackson said. “Right now, what we do know is there is no vapor associated with this toxin. However, it is associated with an aerosol. So that if you disturb the water, the toxin can be in the droplets of the water and consequently you can then inhale those droplets or take them in through the mouth. This is why we are strongly emphasizing no contact with the water because of those health risks and no known antitoxins and some of the most potent toxins known.”
Jackson said state officials are working on keeping the public aware of all health issues associated with the toxins found in the lake.
Jackson said rashes and blisters can occur from contact with the water. If a person comes into contact with the water, Jackson recommended the affect area be washed as soon as possible.
“If an aerosol, through a wave or any boat contact, that would create an aerosol and you can breath that in,” Jackson said of breathing in toxins from the water. “If you breath in those toxins in high enough numbers, you can get eye, ear, nose irritation and you can get asthma-like symptoms.”
Jackson said swallowing lake water can cause severe gastrointestinal problems including nausea and vomiting. The toxins also can cause liver toxicity, kidney toxicity and abdominal pain.
“You can have some memory problems, you can be dizzy, blurred vision,” Jackson said of possible neurological issues associated with coming into contact lake water. “This is why we strongly, I repeat, strongly emphasizing no contact and avoid contact with water.”
Jackson said current standards for the toxins are based on adult standards. There are no children standards.
“This is why we really want to be more conservative in terms of putting out those advisories,” Jackson said. “I can assure you that I have been in contact with Centers for Disease Control and many of the other state health officials, at least 13 of them, who are having some of the problems as we are having here. We are really pushing for coming up with some national standards to address these kinds of issues. Hopefully, before the end of the year, or much sooner, we will have some.”

Friday, July 30, 2010

Phytoplankton population decline



July 28, 2010

Phytoplankton in retreat

By Melissa Hennigar

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Use of the Secchi disk, ca. 1910. Historical Secchi disc data are one of the two main data sources in our analysis (Yonge, C.M., Scientists measuring the water transparency with a Secchi disk, Queensland, ca. 1928, Part of Album of the Great Barrier Reef Expedition in the Low Islands region, Queensland, 1928-1929. (Photo courtesy of the National Library of Australia).
Research collected for more than a century is helping Dalhousie University researcher Daniel Boyce in his quest to examine the health of the world’s oceans.

A simple tool known as a Secchi disk as been used by scientists since 1899 to determine the transparency of the world’s oceans. The Secchi disk is a round disk, about the size of a dinner plate, marked with a black and white alternating pattern. It’s attached to a long string of rope which researchers slowly lower into the water. The depth at which the pattern is no longer visible is recorded and scientists use the data to determine the amount of algae present in the water.

More specifically, the research is focused on a particular type of algae known as phytoplankton. This is the first time that significant research has been complied and examined to study the algae levels in the world’s oceans.

It is hard to imagine this tiny photosynthetic plant may be one of the most urgent indicators of the declining health of the world’s oceans. “Phytoplankton provides food for basically everything in the ecosystem, from fish right up to human beings,” says Mr. Boyce, a PhD candidate with the Department of Biology at Dalhousie. “Phytoplankton is also important in maintaining sustainable fisheries operations and the overall health of the ocean. We need to make sure that the numbers do not continue to decline.”

The researchers found that the number of phytoplankton has been decreasing by a rate of about one per cent per year, for the past 110 years. While this might not seem like a large number, this translates into a decline of about 40 per cent since 1950. In total, just under half a million observations were compiled to be able to estimate phytoplankton levels through the years.

Daniel Boyce is a PhD candidate at Dalhousie.
The two main objectives of the research were to examine global trends in phytoplankton over time and to determine what might be driving these trends. Preliminary conclusions suggest that rising ocean temperatures are the leading cause of the decline. “As the water temperature rises, the ocean becomes more stable which limits the nutrients present in the water. This in turn limits the amount of phytoplankton,” explains Mr. Boyce.

Based on the research collected, phytoplankton levels have decreased in eight out of 10 ocean regions.

“Unfortunately, we as scientists don’t fully understand what exactly the effects of a decline in phytoplankton will be. We need to do more research into the effects of less phytoplankton. Obviously, doing whatever we can to lower the temperature of the world’s oceans is an excellent start,” says Mr. Boyce.

The full report, Global phytoplankton decline over the past century, appears in the journalNature on Thursday, July 29. The report is co-authored by oceanographer Marlon Lewis and marine biologist Boris Worm.

SEE THE ARTICLE: Global phytoplankton decline over the past century in Nature

Monday, July 26, 2010

Diatomaceous Earth

A very good video about DE


Explains what Food Grade Diatomaceous Earth is and looks at some of it's many applications.



Great photos of Diatomaceous Earth

Great photos of Diatomaceous Earth by Ms. Alisha V




Some of the Many of Uses of DE
Diatomaceous earth has an incredible number of uses. It's a popular and safe bug killer; a great way to dry out areas that are chronically damp; ingested, it is considered a health aid; and is one of the most common ingredients in swimming pool filters. Some of the other many uses of DE are listed here, though this list is no where near all inclusive.
Abrasive in Toothpaste
Dynamite Base
Safe Insecticide
Garden Enrichment
Cake Mix Ingredient
Supplement in Livestock Feed
Ingredient for Odor Control in Horse Bedding
Swimming Pool Filter Material
Abrasive in Metal Polish
Cat Litter Ingredient
Animal Wormer
Colon Cleanser
Bonsai Soil Additive
Human Food Additive
Human Health Supplement
Protectant for Stored Grain
Activator in blood clotting studies



Thursday, July 22, 2010

Red Tides off China coast


Red tide creates unearthly sight in Fujian

By: chinadaily.com.cn
Jul 12,2010
A bird's-eye view of red tide in Changle offshore areas in Fuzhou,East China's Fujian province, July 12, 2010. The red tide, triggered by lingering high temperature and changing marine environment, has plagued the local fishery industry and marine organisms. [Photo/Xinhua]

Monday, July 19, 2010

Phytoplankton blooms in Ocean



Old Theory of Phytoplankton Growth Overturned, Raise Concerns for Ocean Productivity

ScienceDaily (July 16, 2010) — A new study concludes that an old, fundamental and widely accepted theory of how and why phytoplankton bloom in the oceans is incorrect.

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"What the satellite data appear to be telling us is that the physical mixing of water has as much or more to do with the success of the bloom as does the rate of phytoplankton photosynthesis," Behrenfeld said. "Big blooms appear to require deeper wintertime mixing."


That's a concern, he said, because with further global warming, many ocean regions are expected to become warmer and more stratified. In places where this process is operating -- which includes the North Atlantic, western North Pacific, and Southern Ocean around Antarctica -- that could lead to lower phytoplankton growth and less overall ocean productivity, less life in the oceans. These forces also affect carbon balances in the oceans, and an accurate understanding of them is needed for use in global climate models.


Worth noting, Behrenfeld said, is that some of these regions with large seasonal phytoplankton blooms are among the world's most dynamic fisheries.


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Algae off Hawaii



Scientists hope to solve mystery of algae blooms in open ocean

By Helen Altonn

POSTED: 01:30 a.m. HST, Jul 18, 2010

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These ocean studies are important because algae remove huge amounts of carbon dioxide from the Earth's atmosphere and help control climate, the scientists pointed out.

Instruments on the first drifter, placed off Oahu in December 2007, showed a gradual increase in oxygen concentrations in the upper 330 feet of the ocean, the researchers said. The float also detected a gradual decrease in nitrate concentrations in deeper waters.

The oceanographers found that the amount of oxygen produced near the surface through photosynthesis was directly proportional to the amount of nitrate being consumed in deeper water.

They still don't know how the algae obtain deep ocean nutrients but said data show swirling ocean eddies carry nitrate to about 230 feet below the ocean surface.

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