Sat. Oct 23rd, 2021


A bird is setting foot in the mangrove forest.

There is a Amazing mangroves Ecology in Tabasco, Mexico.
Pictures: Octavio Aburto / Mexican Sea

More than 100 Miles from the bay Mexico, An ecosystem of salt tolerant trees Rich Along the freshwater river. A team of researchers recently investigated how this green oasis has been so side-tracked from its common habitat and they It has been observed that the forest was more internally confined than in the last intergalactic period 100,000 years ago.

“We found these beautiful lagoons, a beautiful forest of red mangroves,” he said Marine ecologists Octavio Aburto IA phone call. “It’s like a lost world.”

Aburto, Of Scripps Institution of Oceanography in UC San Diego, Part of a team that recently conducted a genetic analysis of the forest with a Geological analysis To determine his age. They too To survey Plants in the area (besides red mangroves) and performed Sea level modeling to determine where the ocean was during the Pleistocene, which was almost finished 12, 000 years ago. Apparently all research on external ecosystems has been published today in the Proceedings of the National Academy of Sciences.

Lilypads from the bottom.

Lillipads in mangrove forests, where many plants commonly found in the marine environment now live.
Pictures: Octavio Aburto

Forest Sit down San Pedro was on the banks of the river Marti and The discovery was made by Carlos Burello, a botanist at Universidad Juarez Autonoma de Tabasco who co-authored a recent study. “I used to fish here and play in these mangroves as a kid, but we never knew when they got there,” said Burello, a UC San Diego Press release. “It was the driving question that brought the team together.”

The team’s geological analysis produces marine gastropod fossils, indicating that the area was not always freshwater environments, a concept proven by sea level modeling. During the last interglacial period, The earth was warm enough that the ice cubes melted completely. Sea levels were 20 to 30 feet higher than they are today, and now the waters in the Gulf of Mexico have receded far intoland. Where there was the edge of the sea, but when the sea was there the mangroves grewThe water has receded, The forest remained. An ecosystem is an archetype: a form of the ancient past that was permanently managed.

The team thinks that mangrove populations survived in the area thanks to the type of freshwater rather than the sea. The water is rich in calcium carbonate, thanks to limestone rocks in the Tabasco region. Red mangroves can set up shop in calcine waters – without the need for any seawater – although the situation is “very rare”, according to Aburto., Who led the recent research paper.

This Sundarbans A.TS Other creatures Which usually live in saltwater ecosystems; The team has identified about 100 Usually that species Some live near the ocean, including cacti and orchids, and yet are found many miles off any coast.

Mangrove from above.

Forests are under threat from humans, mostly due to agriculture.
Pictures: Octavio Aburto

Unfortunately, the ancient forest is under threat. Cultivation and hunting in the area has seen mangroves cut down and burned. Until the 1970s, mangroves covered a wide area of ​​the Tabasco region, but efforts to establish a cattle range near the river have pushed the last parts of the forest to the riverbank.

“We hope this research will provide support for further conservation of this reservoir of biodiversity,” Aburto said. Said. “It can not only help us understand the past state of this planet, but also help us understand how we can better adapt to future changes.”

Although brackish water allows mangroves to set up shop in the first place, very good things can be a problem. Although many of these mangroves are inland today, other mangrove forests are at risk DrowningThey call home as they drown



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