hatchery control Articles

  • State Fish Hatcheries and Invasive Species Don’t Mix

    INTRODUCTION The Vermont Fish and Wildlife Department is responsible for the protection and management of the state’s fish populations. Cultured fish are stocked in natural and manmade areas that are excellent for growth and survival but have little or no spawning habitat. Other stocking areas include natural water bodies where spawning and nursery habitats have been destroyed or isolated from ...

  • Migration barriers protect indigenous brown trout (Salmo trutta) populations from introgression with stocked hatchery fish

    Brown trout populations in the Belgian rivers Scheldt and Meuse have been intensively stocked in the past decades, often with material of uncertain origin. Moreover, the species habitat has become increasingly fragmented, preventing gene flow between neighboring populations. We assessed how this impacted genetic diversity and population structure by analyzing 12 wild populations (total n=309) and ...


    By Springer

  • Building a filter defense against Zebra and Quagga mussles

    Tiny mussels can create massive problems for intake structures, vaLves, pumps, screens and other water infrastructure around the US. Some filtration systems can provide chemical-free protection against invasive zebra and quagga mussels, but it is vital to understand the problem and develop the right system to avoid being overrun by the alien species. Zebra mussels (Dreissena polymorpha) and their ...

  • Composting Site Remediation Success

    Dorchester County, Maryland agreed to a remediation plan that involved composting the 140,000 tons of unprocessed feedstocks stored on site. An aggressive strategy has ...


    By BioCycle Magazine

  • Innovations in Compost Facility Structures

    Untitled Document THE PROCESS of turning organic feedstocks - everything from yard trimmings, woody residuals, biosolids and manures - into compost involves moisture, heat and acids that can be tough on ...


    By BioCycle Magazine

  • Fish Farms - Inspections below the surface

    Fish farms are tackling the increased demand for aquatic food, while underwater drones are tackling regular and ongoing inspections to ensure fish health and the integrity of the enclosures. According to the Food and Agriculture Organization of the United Nations, by the year 2050, there will be nearly 2 billion more humans populating the earth. Meaning that we will need to produce ...


    By Deep Trekker Inc.

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