LMC Algae Concerns

Algal Toxins and Pets

By D.Ernes – Lake Management Committee

There have been additional reports of pets encountering active blooms resulting in illness and in some cases death. It is useful to remind people of the risks to our for-legged friends.

First, these reports are talking about exposure to toxins that can be released from cyanobacteria [CB], which most people refer to as blue-green algae. As an organism, CB has been around as long as water has been on earth. It is present in a great many lakes in Ohio including ours. But why is this an issue with dogs?

Unlike us, dogs cannot read beach warning signs, or e-blasts and have no issues drinking water that has green swirls in it. The EPA website says “When in doubt, keep pets out”. Additionally, dogs (and other animals as well) may be more susceptible to the toxins that can be present. The most common toxin, microcystin, can cause liver damage that can be fatal in dogs. Here are some things that you should know.

  1. This is not something new. There have been reports of animal deaths related to ingestion of lake water as early as 1878. It has become very visible in our 24/7 news environment.
  2. Symptoms of exposure include: diarrhea, vomiting, drooling, weakness, seizures and breathing difficulties to name a few. If you notice these symptoms, take your pet immediately to the vet. Exposure can be fatal after a few hours to several days depending on the size of the pet and the quantity ingested. There is no cure, but treatments have been shown to be successful.
  3. The Veterinary Merck Manual indicates that the greatest effect is from ingestion of a concentrated bloom. The amount of water ingested that can be fatal can vary from a few ounces to several gallons. For those of you with a health background, it states that the toxins have a steep dose-response curve where as much as 90% of a lethal dose can be ingested without measurable effect.

I have been unable to find any references regarding exposure limits for pets to toxins like there are for humans. So, if you see that there is a bloom on the surface of the water (often seen in the early hours of the day), keep your pet away from it. If they go in, don’t panic. Just get them out, rinse them off and keep an eye out for symptoms. If you send them outside, make sure they drink clean water before they go out, so that they are not thirsty. Have clean water available to them when they are outside, so they are not tempted to drink from the lake. Take care of our furry friends and …

BE LAKE (And PET) RESPONSIBLE

Algal Toxins and Pets

By D.Ernes – Lake Management Committee

Some of you may have seen the recent articles in the paper and on the news about pets (mainly dogs) dying after exposure to algae in lakes and ponds. I want to relay some information I have found on this issue.

First, the articles are talking about exposure to toxins that can be released from cyanobacteria [CB], which most people refer to as blue-green algae. As an organism, CB has been around as long as water has been on earth. It is present in a great many lakes in Ohio including ours. But why is this an issue with dogs?

Unlike us, dogs cannot read beach warning signs, or e-blasts and have no issues drinking water that has green swirls in it. The EPA website says “When in doubt, keep pets out”. Additionally, dogs (and other animals as well) may be more susceptible to the toxins that may be present. The most common toxin, microcystin, can cause liver damage that can be fatal in dogs. Here are some things that you should know.

1. This is not something new. There have been reports of animal deaths related to ingestion of lake water as early as 1878. It has become very visible in our 24/7 news environment.

2. Symptoms of exposure include: diarrhea, vomiting, drooling, weakness, seizures and breathing difficulties to name a few. If you notice these symptoms, take your pet immediately to the vet. Exposure can be fatal after a few hours to several days depending on the size of the pet and the quantity ingested. There is no cure, but treatments have been shown to be successful.

3. The Veterinary Merck Manual indicates that the greatest effect is from ingestion of a concentrated bloom. The amount of water ingested that can be fatal can vary from a few ounces to several gallons. For those of you with a health background, it states that the toxins have a steep dose-response curve where as much as 90% of a lethal dose can be ingested without measurable effect.

I have been unable to find any references regarding exposure limits for pets to toxins like there are for humans. So, if you see that there is a bloom on the surface of the water (often seen in the early hours of the day), keep your pet away from it. If they go in, don’t panic. Just get them out, rinse them off and keep an eye out for symptoms. If you send them outside, make sure they drink clean water before they go out, so that they are not thirsty. Have clean water available to them when they are outside so they are not tempted to drink from the lake. Take care of our furry friends and …

BE LAKE (And PET) RESPONSIBLE

For all Ohio, Algal Blooms and Legislation

love-the-lakeBy Tim Langer, David Ernes and Richard D. Gainar, CEBS – Lake Management Committee

If you have seen the news articles and reports about the severity of algal blooms in Lake Erie and their predictions, you can imagine how much attention this topic is getting at the State and Federal level. As your Lake Management Committee has mentioned before, most of the regulations and training are focused for Northwest Ohio and those watersheds feeding Lake Erie’s Western Basin. Within the past six (6) months both the Ohio Senate and Ohio House of Representatives have passed legislation, Senate Bill 1 and House Bill 61 respectively. Unfortunately, both are aimed at the Western Basin watersheds.

Why does it have to be only Northwestern Ohio? It doesn’t! A way to influence and express your viewpoint is to contact those individuals we elected. If you think elected officials pay little or no attention to your letters and phone calls, think again. A concise, thoughtful letter from their constituents has a significant influence on elected lawmakers. Your vote helps elect them — or not — and that fact alone carries a lot of weight. A staff worker may read and answer your letter because hundreds of letters are sometimes received. But, be assured that your point is communicated and will influence the lawmaker. If you fail to make your interests known, your thoughts will not be represented.

We need to suggest to our Legislators that the current legislation and future legislation be modified to include all watersheds that feed Lake Erie, including ours. Therefore, the LMC asks that you help us and write to your state representatives and ask that they consider this change. A few suggestions for content are shown below.

  • The intent is to improve water quality in Lake Erie, but current legislation ignores most of the Ohio coastline. All watersheds, which feed the lake, can affect the overall Lake Erie water quality.
  • As a resident of Ohio’s largest private lake, we would also like to insure that the water quality is protected where we live. Our community is actively addressing fertilizers and cleaners that we control. We cannot affect the farming practices, which have the greatest effect on our lake.
  • Although the blooms are currently worse on the western basin, that does not mean that, with time, the problem can extend to the rest of the lake, especially if nothing is done in the central or eastern watersheds.

What to write a letter? We are here to help! It’s usually best to send letters to your state representatives for local issues such as improving water quality. Our Ohio District 99 House representative and Ohio District 32 Senate representatives are:

Salutation for Ohio House rep:
The Honorable John Patterson
District 99
77 S. High St
10th Floor
Columbus, OH 43215Dear Representative:
Salutation for Ohio Senate rep:
The Honorable Capri S. Cafaro
District 32
Senate Building
1 Capitol Square, Ground Floor
Columbus, OH 43215Dear Senator:

Your letter does not have to be long or eloquent. It also helps personalize your letter by providing some non-emotional detail and facts in your own words. If certain legislation is involved, cite the title or number whenever possible and explain how it affects you and others. Be sure to include your name and address. Keep it short and simple and include evidence to support your position. Close by requesting the action you want taken: a vote for or against a bill, or change in general policy. Don’t forget to thank them for taking time to read your letter.

Here is an example.

Questions? Please email myself at: timattheshores@gmail.com. It’s believed your letters in support of keeping nutrients and sediment in the fields and not in our waterways will have a significant benefit for Lake Roaming Rock. If you agree with us, pick up a pen. For the price of a postage stamp, you can affect our future.

BE LAKE RESPONSIBLE

What is that green stuff in the lake?

love-the-lakeBy David Ernes – Lake Management Committee

If you recall, not all algae are bad. Green algae usually pose no significant concerns, other than their aesthetic appearance. On the other hand, blue-green algae have the potential to generate toxins that can be harmful. How does one decide if what they see is green algae or blue-green algae? Unfortunately, the only accurate method is to examine the organism under magnification and assess its structure by experts in this type of analysis.

In spite of this, there are some general features that can help to differentiate the types of algae. Most informational articles include a significant number of pictures showing visually what each type looks like. One good source showing both types can be found on a New York web site (www.dec.ny.gov/chemical/81962.html).

Generally, green algae often look like floating rafts, and may appear as if it were a bubbling scum on the surface of the water that may entangle with other plants. There is also a type of green algae that is stringy, or silky and coat rocks and other areas. Duckweed looks like small disks and tend to clump into areas.

Blue-green algae, on the other hand, can appear as green streaks, as spilled paint or pea soup. It can also form as small dots that disperse when disturbed. Others types may look like grass clippings. Blue-green algae are often accompanied by a foul odor (described in some articles as “pigpen” odor).

Other observations one may see in the lake are not algae at all. You may recall a previous article about bryozoans, which are a beneficial organism. You may also see what appears to be foam on the water. This is caused by decomposition products from algae and other plants which, due to wind or agitation, can cause the foam. It can even be seen as parallel streaks in the lake in the direction of the wind. This is harmless and a natural phenomenon in lakes.

Common sense tells us not to swim in any waters that contain unusual amounts of algae. It is best just to avoid contact to insure that you minimize any adverse effects. When in doubt, choose a different spot or visit one of our inviting pools. Please enjoy our beautiful lake and have a safe summer.

BE LAKE RESPONSIBLE

Algal Blooms 101 – Part 3

love-the-lake-logo  By David Ernes – Lake Management Committee

The only way to make informed decisions regarding lake management is to have accurate data. Whether it is the level of nutrients, or toxins, or even a Secchi disk depth measurement, each value requires testing. Testing itself is a multistep process. It involves (1) planning – to decide what to test; (2) sampling; (3) the actual analysis, and finally (4) the interpretation – or what does it all mean. Each step is just as important as the next.

The testing that has been done and continues to be done on our lake is designed for specific purposes. Nutrient and transparency testing (Secchi disk depth) is done to monitor the condition of the lake to see if it is changing. Toxin testing is done to establish the safety of the water for recreational activities. In each case, the testing is done in a specific area selected by an expert to help make informed decisions. But what about the rest of the lake? Based on a listing of Ohio Lakes in Wikipedia, the surface area of Lake Roaming Rock is 464 acres. This calculates to 2.9 billion square inches of water. It is obviously not possible to test at every point on the lake.

However, it is possible for you to become involved. The Sierra Club has a program known as Water Sentinels. Although limited in the testing that is done, this organization can give you proper training – and even the supplies to do the testing. There is also a national program known as the Secchi Dip-In. In this program, people from across the nation take a Secchi depth reading on a specific day each year. You can compare your result with others across the country. There is also a program within the Ohio Lake Management Society known as Citizen Lake Awareness and Monitoring or CLAM. This is a more detailed program involving Secchi disk measurements and bloom identifications. Finally, EnviroScience, Inc., our consultant, has a sampling kit for collection of a water sample for toxin testing. The kit runs around $40, and the toxin testing is an additional $120 per toxin.

Doing your own testing gives you an appreciation for what is involved. If you are interested and want to get your hands wet, there are many options available to you. The Lake Management Committee can put you in touch with each of these programs.

BE LAKE RESPONSIBLE

Algal Blooms 101 – Part 2

love-the-lake-logoBy David Ernes – Lake Management Committee

This is the second in a series. This is not meant to be a comprehensive overview, but is intended to give the reader some basic information on this important lake management subject.

Algal blooms obviously have an aesthetic concern – they just don’t look nice. But the recent news regarding the Toledo bloom brings up another issue – toxins (aka cyanotoxins). These toxins are not associated with common green algae but with cyanobacteria (blue-green algae). Cyanobacteria blooms, as a result, are often called “Hazardous Algal Blooms” or HABs. The good thing is that not all cyanobacteria produce toxins. However, some species of cyanobacteria can produce more than one type of toxin. Obviously, this issue is complex. In spite of all of this attention, the US EPA has not yet set advisory thresholds above which exposure to these toxins should be avoided. The advisory thresholds that you see in the news and elsewhere are either the early World Health Organization (WHO) values, or those set down by the OhioEPA. Most, but not all states have cyanobacteria or cyanotoxin thresholds for exposure, and they differ from state to state. The thresholds for recreational exposure (like for our lake) are typically less severe than those for drinking water (like the Toledo issue).

Exposure to toxins can result in everything from a mild rash to a more serious condition depending on the toxin concentration and exposure. Since it is not possible to tell visually if a bloom is due to cyanobacteria, or if the cyanobacteria have released any toxins, it is best to avoid contact with an active bloom. The tag line on the OhioEPA site is “When in doubt, stay out”.

The only way to determine if toxins exist is to test. Reliable test results require careful sampling and analysis in a qualified lab, both of which are expensive. On the RRA web site, the toxin level results from our two beaches are published. The values for our lake continue to be below recreational advisory thresholds. If the level were to exceed these recommendations, signs will be posted at the two beaches to warn of the advisory. With hard work, good lake management, and the help from our neighbors, we hope to never have to use those signs.

The OhioEPA website (one of the sources of the information in this article) has a lot more information on this topic.

BE LAKE RESPONSIBLE

Algal Blooms 101 – Part 1

love-the-lake-logoby David Ernes – Lake Management Committee

This is the first in a series or articles to provide some background information surrounding Algal Blooms. This is not meant to be a comprehensive overview, but is intended to give the reader some basic information on this important lake management subject.

Algae are a very broad series of organisms, which use light for most of their food, like any other plant. One class, green algae, is a significant food source for the marine food chain and is very beneficial to any lake. Algal blooms, however, are more often associated with organisms known as “blue-green algae”. Surprisingly, they are not really algae, but instead are actually bacteria that also use light for their energy. One of the terms you may have seen is cyanobacteria, where the cyano refers to “cyan” or the color blue. Cyanobacteria can be the typical blue-green color, as well as reddish purple (called “red tide”), or even brown.

So, where did cyanobacteria come from? They are actually one of the oldest living organisms. They have been around for 3.5 billion years, and are often credited with changing the earth’s atmosphere to the oxygen mixture that supports life. In fact, in a recent article, some German scientists have suggested that cyanobacteria could be used for the same purpose on Mars! Cyanobacteria are found everywhere, even in the Antarctic.

So, if they have been around for so long, why are they such a problem today? Basically, people are the cause. In addition to light, the other main food source for cyanobacteria is nutrients in the water, primarily phosphorous and nitrogen. Man’s activities from certain farming practices, the reduction in natural filtration in forests by building structures and roads, and poor handling of sewage treatment effluents have dramatically increased the level of nutrients in bodies of water. So, with a greater food supply, they tend to multiply, forming blooms. This is one of the main reasons that the Lake Management Committee (LMC) has been encouraging best practices which can reduce the inflow of nutrients into our lake. Less food; fewer blooms.

If you have specific questions about this article, or suggestions for future articles, please contact a member of the LMC.

BE LAKE RESPONSIBLE

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