Florida’s Manatees Are Dying in Record Numbers

Image: Pixabay

by Amy Lupica, ODP Staff Writer

In the first two months of 2021, more manatees have died than in the first two months of 2020 and 2019 combined, totaling an estimated 350 animals. Despite recently passed protections for Florida’s seagrasses, a crucial part of the ecosystem that supports manatees, the sea cows are starving at higher rates and experts worry this may be the sign of an ecosystem collapse. Without swift action, 2021 could see over 2,000 manatee deaths, a third of Florida’s documented population.

Why This Matters: While the world faces what some are calling a “mass extinction event,” a report from the Florida Climate Institute found that Florida is experiencing its own unique biodiversity crisis as well.

  • Of the 1,200 species tracked by the Florida Natural Areas Inventory, 25% are at risk of losing 50% of their populations by 2050.
  • Up to 76% of some surveyed species won’t be able to relocate or migrate as climate change destroys their current habitats.

Experts say these manatee deaths are a symptom of that habitat destruction, as poor water quality, sea-level rise, and rising temperatures destroy the seagrass that sustains the entire ecosystem. Without mitigating threats to seagrass, manatees won’t be the last Florida species to experience mass casualty events.

Taken Off the Menu: Experts believe the primary cause of these deaths is starvation due to seagrass loss over the past few decades. Indian River Lagoon guide Billy Rotne explained, “the raw truth of the matter is due to negligence of our stormwater, we’ve had continual algal blooms over the past 10 years, which blocks out seagrass and kills it, so the manatees are starving to death.” 

Algal blooms have plagued the region in recent years; one red-tide bloom lasted for 16 months, irreparably damaging the Southwest coast of Florida. The damage to manatee habitats is so bad, Rotne says, you can see it from space. “We’ve had an entire ecological loss. Look on Google Earth. It’s gone. All the meaningful acreage of seagrass they depend upon is gone,” he said.

What to Do?

Last summer, Florida created the Nature Coast Aquatic Preserve, which protects 400,000 acres of seagrass, effectively extending protections for habitats running along Florida’s gulf coast. Florida has seen much success in the past restoring seagrass along the coast, and experts are hopeful that new protections can stave off further destruction. Additionally, the Florida Fish and Wildlife Conservation Commission is considering implementing catch-and-release policies for snook, trout, and redfish, as well as giving protections to threatened fish species in the area, in an attempt to preserve and protect the ecosystem. But for now, experts say reducing runoff and algal blooms is the key to stopping seagrass destruction.

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