A composition and methods of using the composition for the control of mollusks are provided, which include an effective amount of one or more isolated Phasmarhabditis nematodes, wherein at least one of the isolated nematodes is P. californica, P. papillosa or P. hermaphrodita, and wherein the P. hermaphrodita does not comprise Moraxella osloensis.

Systems and methods for watercraft and marine propulsions systems having marine environment enhancement capabilities are disclosed.

A ballast water treatment system for producing treated seawater is described herein that includes: a reaction chamber, wherein the reaction chamber is located within a vessel; an inlet for introducing chlorine dioxide into the reaction chamber, wherein the reaction chamber is equipped with one or more turbulence inducing devices configured for inducing turbulence, wherein the turbulence inducing device is a stationary device; a second inlet for the introduction of seawater, into the reaction chamber; and an outlet from the reaction chamber, wherein the treated seawater is returned to a storage facility within the vessel or is returned to the sea. A method of treating ballast seawater for producing treated seawater is also described that includes: providing a reaction chamber, wherein the reaction chamber is located within a vessel; providing an inlet for introducing chlorine dioxide into the reaction chamber, wherein the reaction chamber is equipped with one or more turbulence inducing devices configured for inducing turbulence, wherein the turbulence inducing device is a stationary device; providing a second inlet for the introduction of seawater, into the reaction chamber; providing an outlet from the reaction chamber; and treating the seawater with chlorine dioxide, wherein the treated seawater is returned to a storage facility within the vessel or is returned to the sea.

A system for fabricating microparticles useful for example in managing invasive species is provided. The system provides a nozzle for atomizing liquefied droplet material which is then suspended in a cyclonic separator receiving refrigerated gas until the droplets can solidify. In this way small droplets (less than 100 m) can be readily fabricated in bulk without clumping and aggregating.

Systems and methods of restoring a lake including dredging, island creation, water treatment, real estate development, computer modeling of environmental conditions, wave height reduction, sediment removal and encapsulation, bathymetry contouring, littoral zone restoration, plant restoration, and/or fish restoration.

This disclosure provides compositions or combinations of (A) phytotoxic micronutrients and (C) agricultural compositions and their use for selectively and effectively controlling invasive plants.

A ballast water treatment apparatus and a ballast water treatment system having a ballast water treatment apparatus are provided. The ballast water treatment apparatus includes a ballast water transport line configured to transport ballast water between a first location and a second location, the transported ballast water being passed through at least one injector, and a plasma generation device configured to be fed with a feed gas optionally comprising oxygen, and configured to generate a feed gas plasma by a streamer type discharge in a discharge area to provide a treated gas at a treated-gas outlet. The injector includes a liquid passage having an area constructed such as to increase a velocity of the passed-through water in a region of increased velocity, and an injector gas inlet provided in the region of increased velocity. The treated-gas outlet is in gaseous connection with the injector gas inlet.

A submersible device submersible within an algae slurry contained within a pond of an algae bioreactor, the submersible device including a drive motor operable to actuate one or more driven devices that move the submersible device within the pond, a circulation device operable to circulate the algae slurry through the submersible device and discharge the algae slurry back into the pond from a discharge port provided on the submersible device, and a computer system that controls operation of the drive motor and the circulation device.

Methods and systems for killing, preventing, or inhibiting the growth and spread of invasive Dreissenid mussel species, such as Zebra mussels (Dreissena polymorpha) and Quagga mussels (Dreissena rostriformis bugensis) are provided herein. The treatment methods and systems utilize a nonnative source of chlorophyll introduced to a body of water to increase the chlorophyll concentrations in bodies of water. The increased chlorophyll concentration effectively kills or prevents the spreading of the invasive mussel species in the bodies of water. The methods and systems of the present invention advantageously avoid the use of heavy metals or pesticides that may pose health risks to humans. Additionally, embodiments of the present invention can use treatment doses that are nonharmful to other aquatic life.

Devices, such as mobile sensors and static sensors, monitor field health. A comparison to a baseline may facilitate detection of a field health issue. When an issue with field health is determined, a remedy may be deployed. Deploying a remedy may use an unmanned vehicle, such as an unmanned aerial vehicle, or a liquid distribution manifold.