Page 8 - Jupiter West - August '19
P. 8

Page 8, Jupiter West
      Northern Notes



      Algae In The Waterways And                           Algae growth depends
      How You Can Minimize Its                           on weather patterns,
                                                         temperature, and nutrients
      Growth                                             in the water. While blooms
                                                         happen naturally, an
      By O’Neal Bardin Jr.,                              imbalance of phosphorus
      Executive Director,                                and nitrogen, in
      Northern Palm Beach                                particular, can accelerate
      County Improvement                                 an algal bloom’s growth
      District                                           significantly. Pollutants
        The term “algae” is                              from construction runoff,
      generally  used  to  refer                         fertilized yards and golf
      to  a wide variety  of                             courses, road wash,
      different and dissimilar                           stormwater runoff, pet
      photosynthetic organisms,                          waste, and decomposing
      generally microscopic.                             leaves, grass clippings,
      Depending on the species,                          and other organic materials
      algae can inhabit fresh or salt water. In modern   also contribute to nutrient
      taxonomic  systems,  algae  are  usually  assigned  to  one   imbalances  in  the  water.
      of six divisions. The misnamed blue-green algae are   Higher temperatures and
      often grouped with algae because of the chloroplasts   increased  sunlight  in
      contained within the cells. However, these organisms are   summer months also can
      actually photosynthetic bacteria assigned to  the group   encourage algae blooms, as does standing water, which     And don’t think natural fertilizer like manure or
      cyanobacteria.                                     is warmer than circulating water and can act like an   compost is any better than a chemical version, anything
        Freshwater algae, also called phytoplankton, vary   incubator – another significant influence.     that’s going to make your garden plants grow is going
      in shape and color, and are found in a large range of     Algae doesn’t necessarily mean poor water quality,   to make algae grow as well. It’s best to avoid fertilizers
      habitats, such as ponds, lakes, reservoirs, and streams.   but it can be a problem. So, what’s the key to reducing   generally.
      They are a natural and essential part of the ecosystem.   algae on your lake? The most effective thing to do is   Properly Dispose Of Organic Materials
      In these habitats, the phytoplankton are the base of the   reduce the number of algae-feeding nutrients, especially     Following yard work, leaves, grass and other debris
      aquatic  food  chain.  Small  freshwater  crustaceans  and   phosphorus, that make it into the water. Here are some   should be bagged and removed from the property
      other small animals consume the phytoplankton and in   tips to keep your lake in tip-top shape.      to  prevent  them  from  accumulating  and  decaying  in
      turn are consumed by larger animals.               Be Careful With Fertilizer                        the waterbody.  When organic materials are allowed
        Under certain conditions, several species of true     Sure, you want a nice green lawn and healthy plants – but   to decompose in freshwater resources, they release
      algae as well as the cyanobacteria are capable of causing   that fertilizer you spread in your garden also encourages   undesirable nutrients that are responsible for fueling
      various nuisance effects in fresh water, such as excessive   algae to bloom. It’s best to avoid fertilizer altogether if   nuisance plant and algae growth. Ask your lawn-care
      accumulations of foams, scums, and discoloration of the   you’re close to a water source – plant native plants instead,   company to remove grass clippings and leaves to prevent
      water. When the numbers of algae in a lake or a river   which are well-adapted to the environment and don’t require   decomposition in or around ponds and lakes.
      increase explosively, an algal “bloom” is the result. Lakes,   special maintenance. Implement landscaping strategies,     Pick up and dispose of pet waste, a common source
      ponds, and slow-moving canals are most susceptible to   like xeriscaping, that increase groundwater filtration before   of excess nutrients and bacteria. Don’t throw pet waste
      blooms.                                            water enters the pond or lake.                    bags into lakes and canals. They will eventually break
        Algal blooms are natural occurrences, and may occur     If you must fertilize, try and find a phosphorus-free   down and release those toxins into the waterway.
      with regularity (e.g., every summer), depending on   product, and reduce nutrient rich runoff by applying it     NPDES tip: Do not burn any trash in your yards, and
      weather and water conditions. The likelihood of a bloom   when there’s no rain in the forecast.      don’t dump any debris into lakes and canals.
      depends on local conditions and characteristics of the
      particular body of water. Blooms generally occur where
      there are high levels of nutrients present, together with the
      occurrence of warm, sunny, calm conditions. However,
      human  activity often can trigger or accelerate algal
      blooms. Natural sources of nutrients such as phosphorus or
      nitrogen compounds can be supplemented by a variety of
      human activities. For example, in rural areas, agricultural
      runoff from fields can wash fertilizers into the water. In
      urban areas, nutrient sources can cause stormwater runoff
      that carries pollutants such as lawn fertilizers.






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