harmful algal bloom Articles

  • Can harmful algal blooms be predicted?

    Summer 2015, as the eighth month of the year approaches (August), we are starting to hear and read in the news about sudden algal blooms occurring in freshwater lakes and marine environments. Many popular beach resorts have put up warning signs proclaiming the water is unsafe for recreational purposes. This is an understandable precautionary measure since phytoplankton abundance or more ...


    By LG Sonic

  • Algal blooms: What are they?

    Algal blooms are also known as marine blooms or water blooms, and are actually a sudden increase in the population of algae in water scenery. Algal blooms usually take place in freshwater, such as lakes and water reservoirs as well as in marine milieus. They can be easily identified by coloration of the water ensuing from the high density of pigmented cells. Though many types of algae can form ...


    By LG Sonic

  • Harmful algal blooms: new methods of control and management

    The general increase in eutrophication of waters and the changes in global climatic conditions have caused over the last 30 years the spread of algal blooms in seas all over the world. The paper describes the different aspects of this problem, the known classes of marine algal toxins and their effects on human activities, and the problem of ballast waters. New strategies of remote sensing ...


    By Inderscience Publishers

  • Impacts of Climate Change on the Occurrence of Harmful Algal Blooms

    Climate change has been occurring naturally as well as caused by anthropogenic activities over the decades. In relation to the fresh and marine water, the concentration of greenhouse gases results in temperature rise of surface water, lower pH and changes to precipitation, evaporation and vertical mixing of water. All these consequences of changing the environment in combination with excessive ...


    By LG Sonic

  • Use of molecular markers for early warning detection of harmful algal blooms

    Harmful Algal Blooms (HABs) are a biological hazard for, and can also result from, aquaculture. To minimise economic and environmental impacts, an early warning detection system is needed. In this paper, two most commonly used molecular techniques are introduced with applications and examples involving work on the putatively toxic dinoflagellate Pfiesteria piscicida. Unlike previous reviews ...


    By Inderscience Publishers

  • Freshwater harmful algal bloom (FHAB) suppression with solar powered circulation (SPC)

    ABSTRACT Freshwater harmful algal blooms (FHABs) incidence is increasing worldwide, presenting risks for human and animal health, aquatic-ecosystem sustainability and economic vitality. Increasing nutrient input to freshwater, increasing temperatures and decreasing flow rates that create quiescent or stagnant waters are primary causes of increasing incidence. Ecological approaches to FHAB ...


    By Medora Corporation

  • Satellite Images Show Threat of Florida’s Toxic Algal Bloom

    Florida’s Lake Okeechobee algal blooms are even higher this summer causing many significant problems for local residents Florida’s Lake Okeechobee is experiencing a massive algal bloom that threatens waterways throughout the entire state. This enormous algal bloom in Florida’s largest freshwater lake could cause many grave issues within the local ecosystem, and ...


    By LG Sonic

  • Neural network and genetic programming for modelling coastal algal blooms

    In the recent past, machine learning (ML) techniques such as artificial neural networks (ANN) have been increasingly used to model algal bloom dynamics. In the present paper, along with ANN, we select genetic programming (GP) for modelling and prediction of algal blooms in Tolo Harbour, Hong Kong. The study of the weights of the trained ANN and also the GP-evolved equations shows that they ...


    By Inderscience Publishers

  • Using PAC-modified clays to control black-bloom-induced black suspended matter in Lake Taihu: deposition and resuspension of black matter/clay flocs

    Flocculation using modified clays is a technique widely applied in the management of harmful algal blooms (HABs). Polyaluminum chloride (PAC) modified clay is an efficient flocculating agent in HAB control; however its effectiveness in black bloom management is still largely unknown. In the present study, PAC-modified clay was used to flocculate a black bloom under simulated flows. The ...


    By IWA Publishing

  • Algae Enumeration and Identification

    Algae Enumeration and Identification Algae are ubiquitous in virtually all aquatic environments and are important bioindicators of water quality. They are frequently used to assess and monitor the health of aquatic systems. On the other hand, they are also responsible for imparting undesirable flavors to potable water supplies and pose potential health threats, particularly during algal blooms. ...


    By Analytical Services, Inc

  • Ultrasonic depth sensor to measure water levels

    The Dutch algae control company LG Sonic introduced an ultrasonic depth sensor to give the customers real-time insight in the water levels which allows them to adequately deal with water level fluctuations. Reservoirs used for industrial processes or the production of drinking water often deal with strong water level fluctuations. Due to events of high demand and evaporation, water levels in ...


    By LG Sonic

  • Solar-driven photocatalytic decomposition of microcystin-LR: from laboratory development to on-site demonstration

    Harmful algal blooms (HABs) found in various water bodies worldwide have been a huge concern due to their adverse impacts on human health and ecosystems. In particular, HABs associated with cyanobacteria have been of great interest because of their potential to generate and release biological toxins, especially, lethal microcystins (MCs). The overall goal of this study was to develop a new ...


    By IWA Publishing

  • Phytoplankton and bacterioplankton abundances and community dynamics in Lake Erhai

    The composition and seasonal variation of the phytoplankton and bacterioplankton community were investigated, and SPSS and redundancy analysis (RDA) were used to explore the relationship between the phytoplankton and bacterioplankton community dynamics in the typical plateau Lake of Lake Erhai from July 2009 to April 2010. Obvious seasonal variation of phytoplankton was observed, and the ...


    By IWA Publishing

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