AssociationHelpNow ™ NEWYORK The official publication of the Hudson Valley NewYork Chapter of CAI — mailed to every chapter member! Read by homeowners, condominium and cooperative board members and property managers.
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Issue 6, 2018
The Algae Triangle: Managing Nuisance Aquatic Plants Without Pesticides By Gavin Ferris
O ur next four events are some of our most popular — see the ads in this issue for details. On February 20, 2019, we have “HOA/Condo Board Manager Booth Camp” in two locations. These programs hit all the basics. They are great for beginners and educational reinforcement for seasoned board members and managers. The program will be in Ryebrook in the morning and in New Windsor in the early afternoon. Managers — feel free to bring your board members. Of course, we’ll have some snacks, prizes and CEUs (for those earning and maintaining CAI designations). On March 26, 2019, the chapter has a multi-topic event all the way up in Saratoga Springs. It will feature “Capital Projects and Ways to Finance” along with “Contracts” and “How Restoration and Insurance go Hand-in-Hand.” In early spring, on April 16, 2019, we are back at one of our most prestigious locations, The Residences at the Ritz Carlton in White Plains. We have great topics to enjoy at this wonderful location, however please note, it is open to managers only. Sign up early, as this event is limited to the first 30managers to register. All the chapter events scheduled are on the chapter website (www.cai-hvny.org). Event times and locations do occasionally change, so please check the site every now and then. Happy New Year — I look forward to seeing all of you at our next events. Raymond Dickey, Chapter Executive Director CAI Hudson Valley New York
I frequently use herbicides and algaecides in my line of work. Having attended college and graduate school to be an Ecologist, it isn’t something I thought I would do very often, but with the frequency of environmental problems that involve inva- sive flora, nuisance aquatic weeds and potentially-toxic algae, EPA-approved pesti- cides are an invaluable tool. There are, however, times when pesticide use is imprac- tical, imprudent, illegal or impossible. Maybe the HOA or property manager prefers that pesticides not be applied to nearby waters. Perhaps the regulatory bodies in a given area aren’t permitting the use of certain products. Whatever the reason, sometimes this option just isn’t on the table. But how do we effectively manage algae and weeds without pesticides? I employ a simple concept that I call the algae triangle, though it works for all forms of vegetation. If you had the same fire safety lessons in elementary school, you may remember the Fire Triangle, which is based on the idea that three elements are neces- sary for fire: fuel, oxygen and heat. If you have enough of
all three, you’ll ignite a fire. Eliminate any corner of the triangle, and the fire goes out. Similarly, if you have water, sunlight and nutrients, you’ll likely develop some form of algae or vegetation. If the triangle becomes too imbal- anced, the resulting plant spe- cies can become a nuisance. Obviously, in the lake man- agement field, we aren’t re- moving water from the equa- tion, so establishing balance between each factor is the focus. Putting this concept into practice means under- standing how sunlight and nutrients affect the ecology of the waterbody in question. Communities have several natural options to help miti- gate against algae and aquatic weed growth, including limit- ing sunlight, improving water circulation and reducing ex- cess nutrients. If a stormwater pond re- ceives full sunlight during the growing season, this directly impacts plants and algae by increasing water tempera- tures and providing the light necessary for photosynthe- sis. To prevent sunlight from penetrating the water column and stimulating the growth of deep submersed plants and benthic algae, water levels
(above) Floating fountain aerators provide effective oxygenation in lakes and
CONTINUES ON PAGE 3. In addition to thriving in water that receives lots of sunlight, algae and nuisance weeds also flourish in strati- fied waterbodies. A stagnant, sun-warmed layer floating on top of colder, deeper wa- ter can serve as a perfect hab- can be increased. Dredging is an effective strategy to in- crease the depth of a lake or pond, however, it is often the costliest project a commu- nity will ever face. Instead, proactive hydro-raking can help maintain existing water depths and prolong the need for dredging by removing unconsolidated muck and organic debris from the bot- tom of a lake or stormwater pond. Likewise, blue or black pond dye can be applied to reflect sunlight. Pond dye can enhance the aesthetics of a waterbody while simulta- neously absorbing sunlight before it can penetrate the waterbody and fuel excessive plant growth. ponds, which can help reduce undesirable algae by facilitating the conversion of phosphorus to forms that do not sustain algae growth.
Have your community association board members changed since last year? Be sure to update your board’s member names, titles (President, Vice President, Treasurer, Secretary, and Board Member), and contact information to ensure your board members receive all the latest CAI member benefits!
Update today: ONLINE at www.caionline.org EMAIL firstname.lastname@example.org
MAIL to CAI, P.O. Box 34793, Alexandria, VA 22334-0793
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