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In recognition of World Water Day on March 22, it’s important to acknowledge and explore the challenges affecting our freshwater ecosystems. In this blog post, we explore one of those said challenges: Harmful Algal Blooms (HABs).
HABs, characterized by rapid overgrowths of cyanobacteria, have increasingly drawn attention due to their detrimental effects on water quality and aquatic ecosystems. With the onset of spring, rising temperatures create favorable conditions for cyanobacteria growth, setting the stage for potential bloom occurrences in the months ahead. Over recent summers, lakes and freshwater bodies across the nation have faced closures and health advisories due to HAB outbreaks, underscoring the urgent need to address this issue.
Cyanobacteria, often referred to as blue-green algae, are naturally occurring microorganisms in aquatic environments. However, under specific conditions—such as warm temperatures and nutrient-rich waters—these organisms can proliferate rapidly, forming blooms that pose risks to the health of humans, wildlife and aquatic species, local economies and overall ecological balance.
The interplay between climate change and HABs is undeniable: Rising temperatures and altered precipitation patterns create favorable conditions for cyanobacteria growth, exacerbating bloom occurrences. The absence of snow cover and early ice melt further accelerates this process, allowing cyanobacteria to flourish earlier in the year. Over the past few summers, lakes and fresh-waterbodies across the nation experienced closures and health advisories as a result of HAB outbreaks, emphasizing the urgency of addressing this issue.
In light of these challenges, proactive measures are crucial for mitigating the impacts of HABs. Early sampling efforts, initiated as early as March or April, enable the detection of cyanobacteria and akinetes, dormant spores that contribute to bloom formation. Additionally, reducing nutrient inputs, particularly phosphorus, into waterways is essential for preventing HABs.
As we reflect on the significance of water resources on World Water Day, it’s imperative to recognize the importance of addressing threats such as HABs. By raising awareness, fostering collaboration, and implementing effective strategies, we can work towards safeguarding the health and sustainability of our freshwater ecosystems.
In this spirit, we invite you to join the conversation at the Harmful Algal Bloom Summit 2024, hosted by the New Jersey Department of Environmental Protection. This virtual seminar, taking place on March 27, is free to attend and offers a platform for stakeholders to exchange insights, discuss best practices, and explore innovative solutions for managing HABs.
This year’s Summit, which is titled “Unlocking the Puzzle of Harmful Algal Blooms,” includes a keynote address and three educational sessions – “Growth Through Reflection: Lessons Learned,” “Innovative Tools and Applications,” and “Beyond the Numbers” – each featuring a variety of expert presentations. Princeton Hydro Senior Technical Director of Ecological Services Dr. Fred Lubnow is presenting on “Quantifying Overwintering Cyanobacteria and How They May Impact the Monitoring and Management of HABs.”
Get more information and register here.
As we commemorate World Water Day 2024, let us reflect on the interconnectedness of water and life. Small actions taken today can have a profound impact on preserving water quality for future generations. Join us in making a commitment to promote and do our part to support a sustainable future for our freshwater ecosystems.
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