Mexico Caribbean beaches may see worst sargassum since 2018 – What We Know!

Mexico Caribbean beaches may see worst sargassum since 2018

MEXICO CITY – Mexican authorities say the issue of foul-smelling sargassum — a seaweed-like algae — on the nation’s Caribbean coast seashores is “alarming.”

The arrival of heaps of brown, foul-smelling sargassum on the coast’s usually pristine white sand seashores comes simply as tourism is recovering to pre-pandemic ranges, although job restoration within the nation’s prime vacationer vacation spot has been slower.

With extra algae noticed floating out at sea, specialists worry that 2022 may very well be as unhealthy or worse than the catastrophic 12 months of 2018, the most important sargassum wave so far.

“We will say the present scenario is alarming,” mentioned Navy Secretary José Ojeda, who has been entrusted with the apparently hopeless activity of attempting to assemble sargassum at sea, earlier than it hits the seashores.

The Navy presently has 11 sargassum-collecting boats working within the space. However the Navy’s personal figures present that the portion they’ve been in a position to gather earlier than it hits the seashore has been falling.


In 2020, the Navy collected 4% of sargassum at sea, whereas 96% was raked off seashores. However that determine fell to three% in 2021, and about 1% to this point in 2022.

Permitting the algae to succeed in the seashores creates not solely an issue for vacationers, however for the atmosphere, mentioned Rosa Rodríguez Martínez, a biologist within the beachside city of Puerto Morelos who research reefs and coastal ecosystems for Mexico’s Nationwide Autonomous College.

A lot algae is reaching the seashores that resorts and native authorities are utilizing bulldozers and backhoes, as a result of the conventional groups of rakes, shovels and wheelbarrows are now not sufficient.

“The heavy equipment, when it picks it (sargassum) up, takes a considerable amount of sand with it,” contributing to seashore erosion, Rodriguez Martinez mentioned. “There’s a lot sargassum that you may’t use small-scale gear anymore, you need to use the heavy stuff, and when the excavators are available in, they take away extra sand.”


Rodríguez Martinez worries that 2022 may very well be worse than 2018, the earlier peak 12 months. “In the previous couple of days there have been quantities washing up, and in locations, that I didn’t see even in 2018,” she mentioned.

Nevertheless, the College of South Florida Optical Oceanography Lab mentioned in a report that “2022 is probably going going to be one other average or main sargassum 12 months,” with observable quantities in all waters decrease than in 2018 and 2021.

However given the vagaries of ocean currents, it could simply be a really unhealthy 12 months for Mexico. Rodríguez Martinez is already struggling the results herself, at her beachside workplaces.

“The place I’m, I’m about 50 meters (yards) from the seashore and the odor may be very disagreeable,” she mentioned. “Proper now my head is hurting and one other buddy mentioned her head hurts, and I mentioned it have to be the (hydrogen) sulfide gasoline from the sargassum, no?”

The issue comes simply as resorts like Cancun, Playa del Carmen and Tulm are recovering from the brutal two-year drop in tourism brought on by the coronavirus pandemic. Not all seashores have been hit equally; many in Cancun and Isla Mujeres are sometimes freed from a lot sargassum, however a lot of the Riveria Maya has been hit laborious.


Carlos Joaquin, governor of the coastal state of Quintana Roo, mentioned the variety of vacationers arriving by air to this point this 12 months — some 3.54 million vacationers — is 1.27% above 2019 ranges, earlier than the pandemic. However Joaquin mentioned that solely about 83% of the 98,000 jobs misplaced throughout the pandemic have returned.

Sergio León, the previous head of the state’s employers’ federation, mentioned the seaweed invasion “has positively affected us, it has affected our picture on the home and worldwide degree. Clearly, not simply visually, however in time period of environmental injury and ache.”

“The Navy is making an effort, but it surely wants extra, it isn’t sufficient,” mentioned León. “The perfect factor can be to assemble it earlier than it will get to our seashores.”

Rodriguez Martinez mentioned that, given the restricted variety of Navy boats and funds, the perfect answer is perhaps to hold floating offshore obstacles and gather the sargassum in waters nearer to the shore.


However she notes one other drawback: what to do with the 1000’s of tons of stinking algae collected every year, primarily by non-public lodge house owners. Some have merely been tossing the mounds collected from the seashore into disused limestone quarries, the place the salt and minerals collected within the ocean can leech into groundwater.

Different merely toss into woodlands or mangrove swamps, which is equally as unhealthy.

“The algae has plenty of salt … so that isn’t good, even for palm bushes, that are fairly salt resistant,” she famous.

Whereas some have tried to make use of sargassum to create bricks or fertilizer, the shortage of official insurance policies and long run plans make it laborious to acquire massive investments for such plans.

Preliminary studies within the 2010s urged the plenty of seaweed got here from an space of the Atlantic off the northern coast of Brazil, close to the mouth of the Amazon River. Elevated nutrient flows from deforestation or fertilizer runoff may very well be feeding the algae bloom.


However different causes might contribute, like nutrient flows from the Congo River, elevated upwelling of nutrient-laden deeper ocean water within the tropical Atlantic and dirt blowing in from Africa.

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