Issue no.172 - Eutrophication, Cyanobacteria, and Cyanotoxins Newsletter
Microcystis bloom.
From the Mainstream Media / Dans les médias grand public
Finland: Finland's lakes warm up, raising
algae concerns
“The median temperature of lakes across the country is about 7 degrees warmer than the long-term average.”
uPcycle:
Towards a sustainable phosphorus future for freshwater and coastal ecosystems.
“Bringing together global communities to deliver a sustainable phosphorus future to protect our freshwater and coastal ecosystems.”
New Zealand: Call for better use of
phosphorus
“Manhire took part in Our Land and Water’s research and says trend data from farms and orchards show that most growers and farmers in New Zealand are responsible with their use of phosphorus.”
Canada & USA: Lake Champlain: 2024
State of the Lake and Ecosystem Indicators Report
“Produced every three years, the report reflects the most current scientific data and resource management approaches.”
USA: Will a focus on stream health help
boost the Chesapeake?
“For 40 years, the Bay region has struggled to sufficiently reduce nutrient pollution from farms. The reasons are complex. But it’s important to explore those challenges as the region holds a tough conversation about the Bay restoration effort beyond 2025.”
Scientists
find adding rock dust to agricultural fertilizer can boost crop yields by over
15%
“This method could allow
farmers to become less dependent on traditional nitrogen-based fertilizers,
which can have harmful impacts when excess nitrogen pollutes our air, soil, and
water.”
See also: Enhanced weathering in the US Corn Belt delivers carbon removal with agronomic benefits
Ohio, USA: A new Lake Erie lawsuit targets
TMDL
“The parties claim that the plan “fails to limit pollution caused by dissolved reactive phosphorus and does not meaningfully address the concentrated feeding operations, or CAFOs, that are responsible for polluting the watershed.””
Ireland: Water quality action campaign
launched by Teagasc
“The eight action campaign, Better Farming for Water, identifies eight actions farmers can take on their own farms which will lead to improvements in water quality and reduce the loads of nitrogen, phosphate, sediment and pesticides entering rivers.”
Texas, USA: Austin continues to battle
algae
“The city will undertake the fourth year of a pilot program to slow the growth of harmful blue-green algae on Lady Bird Lake and, so far, the program has seen mixed results.”
(↓…We may have to start a report just for Florida…!)
Florida, USA: Project to help clean up Lake
Istokpoga
“In 2022, AguaCulture conducted a demonstration project on Lake Okeechobee, using mechanical harvesters to remove invasive plants from the lake, then dumping them into a machine that liquified them, and pumped the liquid through miles of hose to be spread on pastures.”
Florida, USA: Video: New technology targets
phosphorus removal in Lake Okeechobee
“At the edge of Lake Okeechobee, galvanic cells have been installed to remove phosphorus from the water.”
Florida, USA: Florida’s water pollution
strategies may fall short of goals
“Task force members expressed concerns that current measures like Total Maximum Daily Loads (TMDL) and Best Management Practices (BMP) may not be enough to achieve clean water.”
From the Scientific Media / Des médias scientifiques :
Eutrophication
in the Red Sea: Causes and effects
From Oceanographic and Marine Environmental Studies around the Arabian Peninsula.
“This study suggests that drinking water sources in New Jersey are vulnerable to forthcoming HAB. Monitoring and management of source waters is crucial to help safeguard public health.”
“This study highlights the importance of considering environmental conditions in order to develop strategies to mitigate cyanotoxin contamination in aquatic ecosystems.”
Phytoplankton
biomass in northern lakes reveals a complex response to global change
“Gonyostomum semen biomass is decreasing, while cyanobacterial biomass is increasing.”
“Preventative management to decrease the planktonic growth of overwintering cyanobacteria in sediment prior to HAB formation is an attractive strategy to lessen human and ecological risks and economic impacts.”
Public
awareness and concern about harmful algal blooms – United States, 2020
“We analyzed data from the first nationally representative survey to estimate public awareness and concerns about the health impacts of harmful algal blooms.”
Decadal
warming has intensified Microcystis-dominated cyanobacterial blooms in
Lake Erie
“We conclude that increasing water temperature is an important factor facilitating the intensification of these, and likely other, CHABs, and is thus promoting an expanding public health threat.”
A
new concern raised from algal bloom: Organic chloramines in chlorination
“Algal blooms have become
a significant challenge in water treatment all over the world. In chlorination
of drinking water, algal organic matter (AOM) leads to the formation of organic
chloramines.”
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