Latest News
• Add My News • Search Old News
Is That A Fern On Your Dam?The surfaces of many local farm dams are sometimes partly or completely covered by a floating native aquatic fern called Azolla. By Department of Primary Industries - 5th April 2006 - Back to News Azolla plants have snowflake shaped or triangular fronds up to 10mm wide and 30mm long. They may be red or green in colour depending on the amount of sunlight. During spring or in shaded situations the upper parts of the plants are green, whereas in summer and autumn, when exposed to full sunlight, they become dark red. Fine roots up to 4mm long hang in the water below the floating fronds.
Azolla is not harmful to stock that drink the water or consume the plant. Nor does Azolla have a deleterious effect on domestic house and garden water. It can, however, affect aquatic life in the dam. When Azolla forms a dense surface mat it restricts sunlight and reduces oxygen levels in the water. It can also block pipes and pumps and deter stock from watering.
Azolla is nutrient rich and high in protein. The plant has a bacterium living in its leaves, which allows it to use nitrogen from the water and air for it’s own growth. Overseas, Azolla is used as a fertiliser in rice fields and has been used as a feed source for various domestic animals and plants. It has also been scraped off dams and used on vegetable gardens and house gardens as a free fertiliser.
Aquatic plants such as Azolla are important habitat for a range of aquatic life including invertebrates, fish and birds. Azolla may also help to reduce nuisance algal growth by providing refuge for algae grazers, and by reducing the availability of nutrients and light.
If extensive Azolla mats are causing an immediate problem, some can be removed by manually or mechanically scraping the top of the dam. A home made two-person scraper using fine chicken netting is a cheap, practical method. While there are chemicals registered to kill Azolla, the process may have side effects of directly killing beneficial aquatic life, or indirectly through rapid plant decay leading to oxygen depletion in the dam.
Minimising the amount of available nutrients and sunlight will lower the potential for excessive growth of Azolla, algae and other aquatic plants. Where possible:
- Reduce fertilisers entering the dam by leaving an unfertilised area around the dam.
- Leave a buffer area or filter area of vegetation above the dam to minimise entry of nutrients and sediments.
- Minimise sunlight on the dam by planting vegetation on the north and west sides of the dam. Do not plant trees on the dam embankment.
- Restrict stock access to dam to prevent disturbance to banks and sediments, and to stop stock defecating and urinating in the water. Provide alternative drinking water via troughs.
- Occasionally de-sludge the dam to remove accumulated nutrients.
Source: http://gippsland.com/ Published by: news@gippsland.com
Related Articles- Enhancing farm dams: Learn from experts at Wilandra Farms Field Day in Clydebank on 26 November 2025
Join WGCMA's free field day at Wilandra Farms, Clydebank, on 26 November to learn from ANU ecologists about enhancing farm dams for biodiversity, water quality, and climate resilience. - Kickstart your career locally with Bass Coast Shire Council’s 2026 Traineeship Program send applications by 26 January 2026
Bass Coast Shire Council’s 2026 Traineeship Program offers young people and career returners real-world experience, Certificate III qualifications, flexible work, and pathways to permanent roles across seven diverse disciplines. - Have Your Say on Wonthaggi structure plan review aiming to guide growth, community needs and opportunities
Bass Coast Shire Council is reviewing the Wonthaggi Structure Plan. Have your say on the town's growth, housing, jobs, heritage, and future opportunities to help shape Wonthaggi as Bass Coast regional hub. - Have your say on key council plans, policies, and the future direction of South Gippsland through current engagement opportunities
South Gippsland Shire Council invites community feedback on key draft plans, policies, and the 2026/27 Budget, with in-person engagement opportunities and "Coffee with a Councillor" sessions in October. - Have your say on the draft Roadside and Footpath Trading Policy balance road access, submit by 28 September 2025
Baw Baw Shire Council invites feedback on its Draft Roadside and Footpath Trading Policy, aiming to balance vibrant business activity with safe pedestrian access. Consultation runs 29 August - 28 September on Baw Baw Connect. - Have your say on the 2027 transition to Pre-Prep and help shape early learning in South Gippsland
South Gippsland Shire Council is seeking feedback from parents and carers to help shape how the Victorian government's 2027 Pre-Prep program is delivered locally to meet community needs. - Have your say on East Gippsland public toilets review until 9 February 2026
East Gippsland Shire Council invites residents and visitors to share feedback on Council-managed public toilets, helping improve cleanliness, accessibility, and maintenance through its Public Amenities Service Review, open until February 2026. - Gippsland Water launches annual ‘Reduce Your Use’ campaign encouraging mindful water usage during hot weather
Gippsland Water has launched its annual ‘Reduce Your Use’ campaign, encouraging customers to follow permanent water-saving rules and tips, conserve water during heat waves, and attend community education events. - Latrobe City Council announces '2025 Latrobe Through Your Lens' photography and video winners
Latrobe City Council congratulates winners of the 2025 Latrobe Through Your Lens competition, celebrating local photography and videography with category prizes and an overall winner highlighted across Council platforms. - David Littleproud urges Australians to support local farmers amid rising imported food and supermarket pressures
Nationals Leader David Littleproud urges Australians to buy local food as farmers face soaring costs, supermarket pressures, and rising imports, warning inaction threatens food security and the future of Australian agriculture. - West Gippsland CMA hosts free sustainable farming workshops with local landcare groups from September 2025 to March 2026
West Gippsland CMA is hosting free farm field days September - March, showcasing sustainable agriculture, carbon farming, and local expertise. Workshops cover soil health, biodiversity, biofertilizers, and agribusiness opportunities. - Shop Local in South Gippsland to strengthen community, support jobs, and keeping our economy thriving together everyday
Shopping locally in South Gippsland strengthens our economy, supports jobs, services, and community groups. Every dollar spent locally multiplies impact, with increased spending boosting growth by millions annually. Shop Local South Gippsland. - SEC acquires Delburn Wind Farm, Gippsland’s first public wind project, creating jobs and boosting local energy and economy by 2028
The SEC’s acquisition of Delburn Wind Farm will deliver Gippsland’s first public wind project by 2028, creating 300 construction jobs, long-term careers, and $22 million in community benefits. - Farmers warn Woolworths' green-and-gold Hillview butter misleads consumers and undercuts Australian dairy
Australian dairy farmers warn Woolworths' green-and-gold Hillview butter misleads consumers, undercuts local producers, and risks jobs, as imported US butter competes with declining domestic dairy production. - Tim Bull encourages local groups to apply for grants supporting veterans, preserving war memorials and heritage by 3 February 2026
Tim Bull urges local organisations to apply by 3 February 2026 for grants supporting veterans and conserving war memorials and community heritage. - Latrobe City invites local artists to join new Public Art Artist Register for murals and creative city projects until 10 February 2026
Latrobe City Council invites local artists to join its Public Art Artist Register, offering paid mural opportunities, enhancing public spaces, supporting tourism, and connecting artists with future creative projects. - Baw Baw Shire residents invited to safely dispose household chemicals at free Detox Your Home event on 14 March 2026
Baw Baw Shire residents can register for a free Detox Your Home event on 14 March 2026 to safely dispose of hazardous household chemicals, helping protect waterways and the environment. - Farm World 2026 at Lardner Park: Ag exhibitions, motocross, rodeo, animals, food, and family fun
Farm World 2026 at Lardner Park features motocross, rodeo, animal encounters, ag exhibits, hands-on farming experiences, food and drink, and family-friendly activities, celebrating Victoria’s largest regional agricultural event. - Farm fencing grants protect 300 hectares of biodiversity and boost waterway health across West Gippsland
Over 300 hectares of farmland will be fenced through West Gippsland CMA's farm fencing grants, protecting waterways, biodiversity, and livestock while supporting sustainable farming and revegetation across the catchment. - Tim Bull urges local clubs to apply for the Sporting Club Grants Program supporting volunteers, equipment, and program delivery by 26 November 2025
Tim Bull encourages Gippsland East sporting clubs to apply for the Sporting Club Grants Program by 26 November 2025, supporting uniforms, equipment, volunteers, events, travel, and governance development. - Tim Bull says locals and community groups want stronger enforcement as illegal campers leave areas unkempt
Tim Bull urges Environment Minister Dimopoulos to act on illegal campers along the Snowy River, balancing public access for tourists with enforcement and welfare oversight to protect local businesses. - Gippsland Water welcomes five local women into STEM internships, promoting diversity, innovation, and career pathways for students
Gippsland Water welcomed five local women into STEM internships, providing real-world experience, mentoring, and career pathways while promoting diversity, inclusion, and innovation across multiple departments this summer. - Inverloch dairy farmer Mick Hughes highlights community collaboration survive South Gippsland's dry season challenges
Inverloch dairy farmer Mick Hughes credits collaboration with the Inverloch Cluster and local water authorities for navigating South Gippsland's recurring dry conditions and improving farm drought resilience. - Meet with South Gippsland Mayor Hersey to discuss ideas or issues that matter to you and your community and other council updates
South Gippsland Shire Council is offering multiple opportunities for community engagement, upcoming events, free workshops, grants, vaccination sessions, and council services throughout Summer 2026 for residents and local businesses. - Skeene Creek Farm launches, driving sustainable agriculture, innovation, and resilience across East Gippsland region
Skeene Creek Farm launches near Bairnsdale, transforming underutilised land into a sustainable agriculture hub, promoting circular economy, innovation, environmental resilience, and practical research for East Gippsland farmers. - Latrobe City invites photographers and videographers to capture the region’s beauty in the ‘Latrobe Through Your Lens’ until 15 December 2025
Latrobe City Council invites photographers and videographers to enter the eight-week Latrobe Through Your Lens competition, celebrating local people, places, and culture, with prizes including gift cards and getaway experiences. - East Gippsland Council launches Buy Local campaign to support businesses, jobs, and community vibrancy this festive season and summer
East Gippsland Shire Council has launched the Buy Local campaign, encouraging residents to support local businesses, strengthen jobs, and keep the community vibrant throughout the festive season and beyond. - From Job expos to farms and sports awards connecting communities across East Gippsland through events and advocacy
From jobs expos to farm visits, sports awards, and community projects, recent weeks highlighted East Gippsland's talent, resilience, and collaboration, advocacy, and opportunities that strengthen local communities. - Nature positive farming field day, sustainable practices, carbon insights, and soil management at Malabar farm
Join Jenny and Paul O'Sullivan at Malabar Farm on 20 November 2025 for a free Nature Positive Farming field day, exploring sustainable practices, greenhouse gas estimation, soil carbon, and carbon farming benefits. - Danny O’Brien congratulates local football and netball clubs recognised through this year’s TAC Club Rewards Program
Gippsland South football and netball clubs have secured TAC Club Rewards funding, promoting safe driving and road safety awareness through community-led initiatives supported by AFL Victoria. - Eat Drink Play Gippsland celebrates local flavours, award-winning cheeses, and culinary creations from passionate regional makers
Eat Drink Play Gippsland showcases top restaurants, award-winning cheeses, and artisanal delights. From snacks to gourmet dishes, the festival celebrates local flavours and passionate makers, offering something delicious for every palate. - South Gippsland farmers dig into practical carbon farming at Down to Earth field day
Thirty-five South Gippsland farmers explored carbon farming at Malabar Farm, learning practical ways to improve soil health, reduce emissions, and farm sustainably while sharing knowledge with peers. - Bass Coast Shire Council celebrates local community groups’ achievements and grants at inspiring event
Bass Coast Council celebrated 92 local community groups, awarding $294,000 in grants, including $40,000 for climate projects, supporting creativity, connection, and resilience across the region at a vibrant celebration. - Danny O’Brien criticises Labor’s $650M Delburn wind farm investment ignoring local community concerns
Gippsland South MP Danny O’Brien criticises Labor’s $650 million Delburn wind farm investment, calling it a waste of taxpayers’ money that ignores local community concerns about fire, noise, and visual impact. - Carbon Calculator Events for farm emissions, accounting, and carbon farming insights for farmers
Attend the free Carbon Calculator Events on 28 October and 11 November 2025 in Traralgon to learn carbon farming, accounting, and estimate your farm's emissions footprint. Registration required. - Darren Chester urges Gippslanders to support local growers, highlighting family-owned 'Get Fresh Gippsland' business
Darren Chester is urging Gippslanders to support local growers this Christmas, highlighting family-run Get Fresh Gippsland for supplying fresh, locally grown produce while strengthening the regional economy.
- Darren Chester honours Gippsland farmers and workers on National Agriculture Day for vital regional contributions
Darren Chester has praised Gippsland’s farmers and agricultural workers on National Agriculture Day, recognising their resilience, vital economic contribution and essential role in sustaining local communities and ensuring ongoing food security. - Darren Chester urges Gippslanders to support local artisans, makers, and small businesses this holiday season
Federal Member Darren Chester encourages Gippslanders to shop local this Christmas, supporting artisans, makers, and small businesses like Emporium 3844, boosting the regional economy and celebrating community talent. - Baw Baw Council partners with Red Cross to teach local children disaster preparedness through Resilient Kids workshops
Baw Baw Council and Red Cross are delivering Resilient Kids workshops in local schools, teaching children emergency preparedness, 000 calls, coping skills, and creating take-home emergency kits throughout 2026. - Wellington Shire Council to update Community Local Law 2021, ensuring relevance, inclusivity, and strong legal compliance
The Safer Communities Plan includes Jack's Law to clear weapons from streets, Restart for repeat offenders, and Youthstart to support at-risk youth. Mr Cameron says Labor lacks a plan to tackle Victoria's crime crisis, leaving regions vulnerable. - South Gippsland Eat, Drink Play Festival celebrates local food, drinks, live music, kids' activities, and outdoor fun and other updates
Eat Drink Play Gippsland returns this spring at Leongatha Railway Precinct, showcasing regional food, drink, and live music. With daytime tastings, evening entertainment, and kids' activities, it's a family-friendly celebration of Gippsland. - Darren Chester urges Gippsland’s young athletes to apply for Local Sporting Champions grants now available until 31 January 2026
Federal MP Darren Chester is urging Gippsland’s young athletes to apply for Local Sporting Champions grants supporting travel and competition costs. Eligible juniors aged 12-18 can apply before 31 January 2026. - Bass Coast Shire Council pop-up sessions on four local playspace upgrades and proposed new designs on 13 Jan 2026
Bass Coast Council is upgrading four playspaces in Wonthaggi, Cape Paterson, and Ventnor, inviting community feedback on two design options via Engage Bass Coast and January pop-up sessions. - East Gippsland hosts Youth Agritech Expo showcasing farming futures and career pathways for young people on 17 September 2025
East Gippsland will host the Youth Agritech Expo, offering farm tours, hands-on experiences, and showcasing agricultural career pathways, technology, and innovation to inspire the next generation and build a skilled workforce. - Sardine dining in Bairnsdale showcases fresh local seafood with chef Mark Briggs’ expert touch
SARDINE Dining in Bairnsdale, led by chef Mark Briggs, serves expertly sourced Lakes Entrance seafood, refined dishes, and a stylish wine bar, earning six chef’s hats and drawing diners region-wide.
|
|
