water hyacinth – Aquarius-Systems

May 2025 Newsletter

Sun, 03 Aug 2025 17:25:15 +0000

From Menace to Useful Resource

A Message from Our Leader: Repurposing Aquatic Weeds

Water Hyacinth Fights Against Microplastic Pollution

Turning Water Hyacinth into Opportunity

Your Guide to Water Hyacinth Solutions

Upcoming Conferences

2025 Aquatic Weed Harvesting Seminar
New Hampshire Lakes Lakes Congress
Maine Lakes & Lake Stewards Annual Conference

Glyphosate Risks in Water Hyacinth Control Highlight Concerns

Tue, 25 Mar 2025 20:37:41 +0000

Water hyacinth, one of the most invasive aquatic plants, poses serious threats to waterbodies across India, including Pashan Lake in Pune and Powai Lake in Mumbai. As municipal authorities struggle to manage these infestations, the use of herbicides such as glyphosate is being considered as a cheaper and quicker solution. However, applying glyphosate to control water hyacinth can have long-term harmful effects on aquatic ecosystems. Glyphosate breaks down into aminomethylphosphonic acid (AMPA), which remains toxic and continues to affect aquatic life. It reduces oxygen levels by promoting the decay of dead plant matter, leading to the death of fish and other aquatic species. Additionally, glyphosate can disrupt the food chain by harming beneficial algae and microorganisms that support aquatic biodiversity.

The risks of using glyphosate go beyond immediate environmental concerns. Studies suggest that its residues in waterbodies can accumulate over time, affecting not just fish but also amphibians and other organisms. In sensitive habitats, such as those with crocodiles or endemic species, these chemicals may alter reproductive cycles and hinder growth, leading to population declines. Furthermore, introducing glyphosate without addressing pollution sources, such as sewage inflow, only provides a temporary fix. Experts emphasize the need for thorough environmental assessments and long-term monitoring before opting for chemical interventions. Sustainable and eco-friendly alternatives, such as biological control using weevils or mechanical removal, offer safer solutions to protect India’s vulnerable aquatic ecosystems.

Salvinia Threat Emerges in Lake Victoria Waters

Tue, 25 Mar 2025 20:16:39 +0000

A new invasive type of water hyacinth, Salvinia spp., has been discovered in Lake Victoria. It reproduces rapidly, doubling its biomass within 8 days due to high nutrient levels caused by human activities such as improper waste disposal and deforestation. Over 36 tons have already been removed, but the plant continues to spread, threatening fish populations, water transport, and biodiversity by depleting oxygen and reducing water quality.

The newly discovered Salvinia spp. in Lake Victoria likely entered the lake through contaminated fishing gear, boats, or water currents connecting nearby ecosystems. Unlike the regular water hyacinth (Eichhornia crassipes), which forms thick mats on the surface, Salvinia spp. spreads faster and is more resilient under varying environmental conditions. It depletes oxygen more aggressively, suffocating aquatic life and reducing biodiversity. This variant poses a greater ecological threat and requires immediate control measures.

The species negatively impacts fishing, tourism, and water supply, making urgent action necessary.

Restoring Lake Victoria: Battling the Water Hyacinth Invasion

Mon, 10 Mar 2025 18:23:06 +0000

Lake Victoria, the second largest freshwater lake in the world, is an essential resource for the people of Kenya, Tanzania, and Uganda. It provides food, clean water, hydroelectric power, and transportation. However, the lake faces a major challenge due to the spread of water hyacinth, an invasive plant that grows quickly and forms thick mats on the water’s surface. This plant blocks boats, reduces fish populations, and disrupts the ecosystem.

Water hyacinth spreads mainly by growing new plants from existing ones, creating dense clusters. It can also spread through seeds, though this is less common. First introduced into the lake through the Kagera River, the plant has become a serious problem. In 1996, satellite images showed that water hyacinth covered about 1% of the lake, and now it is estimated to cover as much as 3%.

Aquarius Systems, a company specializing in water management, has been selected for a project to remove the water hyacinth from Lake Victoria. Under the Lake Victoria Environmental Management Project (LVEMP), the company will cut and remove 1,500 hectares of the invasive plant over 12 months. This effort is funded by the Global Environmental Facility and the International Bank for Reconstruction & Development.

To tackle the problem, Aquarius Systems will use special equipment, including two “Swamp Devils” and one aquatic plant harvester. The Swamp Devil is a powerful machine that can cut through thick vegetation, including small trees. The harvester will collect and remove the cut plants. This method is a more environmentally friendly alternative to using herbicides, which could harm the lake’s ecosystem.

Managing Lake Victoria’s water quality is a long-term effort. The removal of water hyacinth is an important step, but more work is needed to fully restore the lake’s health. One possible solution is to turn the removed plants into compost for fertilizer. This approach could provide additional benefits to local farmers while helping to control the spread of water hyacinth.

This project is an example of how mechanical solutions can help manage environmental problems without harming nature. While there is no quick fix for Lake Victoria’s issues, this effort is a step in the right direction. People around the world are watching to see how this project unfolds, and it could serve as a model for future lake restoration efforts.

For more information on this project, visit Water-Hyacinth.com Please note that the website is currently live but will be undergoing redesign soon. the right direction. People around the world are watching to see how this project unfolds, and it could serve as a model for future lake restoration efforts.

Water Hyacinth Shows Promise in Removing Toxic Chromium-6

Tue, 19 Dec 2023 21:42:46 +0000

Heavy metal poisoning is a growing concern in many parts of the country. A new method for removing chromium-6, a highly toxic heavy metal, from waste water has been developed by a group of scientists from India and Ethiopia. They claim it to be low-cost and safe.

The new method uses water hyacinth, a weed known for its ability to spread rapidly over water bodies. It is used for cleansing polluted water bodies owing to its remarkable capacity of absorbing pollutants.

In the new study, hyacinth was made into a powder and then mixed with water containing chromium-6. The powder was allowed to settle down and after two minutes the liquid above the powder was removed and analyzed for chromium-6. It was found that chromium-6 levels decreased significantly in water.

Stockton Struggles with Water Hyacinth Despite Treatments

Mon, 18 Dec 2023 17:46:53 +0000

In Stockton, California managers have been trying to keep the water hyacinth that washes in from the Delta under control with herbicide treatments. Unfortunately even after 15 applications, the hyacinth has extended beyond the level of control.

Port officials say a state spraying program failed to control the hyacinth, so they contracted with a Bay Area company to mechanically remove it; removing over 375,000 pounds of the invasive water hyacinth

The infestation has prevented yacht groups from visiting downtown Stockton events and according to Stockton Alliance Director Leandro Vicuna, the problem is hurting local businesses.

Herbicide Ban Targets Water Hyacinth in Vietnam Waterways

Thu, 30 Nov 2023 21:55:51 +0000

Authorities in the Medong delta province of Hau Giang have banned local authorities from spraying herbicide to the water hyacinth. This fast growing plant has slowly been taking over and blocking waterway traffic on rivers and canals in the area.

Many people breed water hyacinth locally to use for making exportable products such as baskets and furniture. These breeders must also contribute to clearing the weed from the water and remove dredged roots from water by destroying them or throwing them on soil rather than back into the water where they will continue to propagate.

Authorities have been spraying 2-4D to kill the water hyacinth and warned people to stop using the water for 10 days. However many households along the rivers and canals have no other source of clean water and the contaminated water must be used for their daily activities.

New Harvester Boosts Weed Removal on Ross River

Thu, 01 Jun 2023 14:46:55 +0000

Weeds on the Ross River have a new predator in town as Council launches its brand new 6.5 tonne weed harvester to combat invasive species in the waterway.

The aquatic weed harvester arrived in Townsville, Queensland, Australia from Aquarius Systems in the United States to replace Council’s older retiring harvester. The new model includes stainless steel fittings, a quieter engine, and the capacity to complete in one hour what the old harvester could do in one day.

“The harvester is an essential piece of equipment to remove invasive species like salvinia, water hyacinth and cabomba, which are native to the Americas,” Cr Molachino said.

October 2022 Newsletter

Tue, 10 Jan 2023 17:49:23 +0000

The Future of Conservation

A Message From Our Leader: Should We Learn to Live With Invasive Such as Eurasian Milfoil?

Data and the Future of Conservation

Floating Hyacinth Mats Provide Food Security

Upcoming Conferences:

Washington State Lake Protection Association 35th Annual Conference
Midsouth Aquatic Plant Management Society 41st Annual Conference
Upper Midwest Invasive Species 14th Annual Conference
North American Lake Management Society 42nd International Symposium

July 2020 Newsletter

Fri, 06 Jan 2023 21:35:42 +0000

More People Than Ever Appreciate Lakes

Aquatic Plant Fertilizer

Appreciated Like Never Before

Plastic Pollution Still Fully Intact After Years Underwater

Water Hyacinth a Natural Sorbent