Human Waste-Driven Algae Blooms Linked to Dolphin Starvation in Florida Lagoon

New research confirms that nutrient pollution drastically altered the ecosystem, forcing dietary shifts and malnutrition among dolphins, with recovery efforts targeting 2035.

• A 2011 phytoplankton bloom in Florida's Indian River Lagoon, fueled by human waste and fertilizer runoff, led to a severe disruption of the ecosystem.
• The bloom caused a 50% decline in seagrass and a 75% loss in macroalgae, key habitats for dolphins' prey, reducing food availability.
• Dolphins shifted their diets, consuming up to 20% fewer nutrient-rich ladyfish and 25% more less-nutritious sea bream, increasing energy demands and malnutrition.
• Starvation-related deaths among dolphins spiked to 61% in 2013, compared to an average of 17% between 2000 and 2020, with 64% of observed dolphins underweight.
• Efforts to reduce nutrient pollution are ongoing, with scientists projecting that safe levels could be achieved by 2035, potentially restoring ecological balance.

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