Shrimp farms threaten Mexico’s mangroves and the jaguars that inhabit them

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Among the tangled mangrove roots that line Mexico’s western coast, the jaguar is the apex predator. However, its existence is threatened by the abundance of a smaller species: the whiteleg shrimp. Aquaculture of this species has boomed in recent decades, clearing swaths of mangrove forests and jeopardizing habitats crucial to jaguars’ survival.

Despite being at the top of the food chain, the jaguar’s population has declined significantly due to habitat loss and poaching. In Mexico, their distribution has shrunk by 54%, with only around 4,000 to 5,000 remaining in the wild. A study in Nayarit found that mangrove coverage decreased from 35% to 26%, while land used for agriculture rose from 38% to 50% over a 20-year period.

However, there is hope for jaguars’ conservation. La Papalota, a small reserve in Nayarit, offers a haven for these big cats. This 368-hectare farm was once a private area that voluntarily dedicated itself to conservation under a federal government program. The reserve is covered in thick mangrove forests and provides a refuge for at least six jaguars.

The area may be too small to provide an entire home region for jaguars, but it acts as a “stepping stone” between larger high-priority conservation spots. It also allows the species to move safely between big reserves, such as Marismas Nacionales Biosphere Reserve and the mangroves of San Blas.

There are eight biological corridors in Mexico’s northern Pacific region, and nationwide there are 581 reserves like La Papalota that are essential for providing mobility for wildlife and ensuring the viability of their populations. These patches of land span a combined 1.14 million hectares and are crucial to jaguars’ survival. By protecting these areas, conservation efforts can help preserve the jaguar population and maintain its position as an apex predator in Mexico’s ecosystems.

Mauricio Cortes Hernandez, regional coordinator of Pronatura Noroeste, stresses that “Nobody disturbs La Papalota,” where owners monitor and protect jaguars with support from conservationists using cameras. This has allowed the jaguar to thrive. However, outside the reserve, mangroves are under threat from urban development and shrimp farming, even in protected areas like Marismas Nacionales Biosphere Reserve. Despite being legally protected in Mexico, authorities often fail to act as people continue to clear mangroves for shrimp ponds.

Experts warn that if this trend continues, jaguar populations may disappear within 10 years. The growth of shrimp farming is a major concern, with Mexico producing over 200,000 metric tons annually and the total surface area of shrimp ponds increasing by 1,100% between 1993 and 2021. According to Quarto, “Shrimp farming is a rampant industry that’s growing really rapidly… We have been fighting this industry for many years.”

Many shrimp farms in Nayarit do not comply with federal regulations, and the industry has links to cartels, which use the farms for criminal activities like money laundering. This complicates conservation efforts and endangers environmentalists who face threats from criminal groups.

Conservation efforts should focus on establishing biological corridors and safe havens like La Papalota to ensure the long-term survival of jaguars. Experts emphasize that connecting these areas is crucial, as jaguar populations are struggling to resist changes in their habitat due to urban development and shrimp farming. Without action, Mexico may lose its mangrove jaguar populations within a decade.

These corridors of mangroves in Mexico are facing significant threats due to urban expansion, deforestation, and agricultural growth. Environmentalists recommend strengthening conservation efforts by providing financial incentives to landowners for preserving biodiversity through ecosystem services payments. Educating local communities, whose livelihoods rely on these areas, is crucial for promoting coexistence with jaguars.

Conservation organizations, such as the Mangrove Action Project and Pronatura Noroeste, are working tirelessly to protect Mexico’s mangroves and jaguars. However, challenges persist due to disagreements between federal and state authorities over enforcement responsibilities, making it difficult to curb the expansion of shrimp farms.

Experts emphasize the need for coordination among different authority levels to address the issue effectively. They also highlight the importance of holding government officials accountable for their actions or lack thereof. Researchers are developing a “mangrove threat index” to predict mangrove loss risks in advance, which could be a game-changer in conservation efforts.

The appointment of Mexico’s incoming environment minister, Alicia Bárcena, has given experts hope for the protection of mangroves and jaguars. As a biologist who has pledged to prioritize mangrove protection, her appointment is seen as a promising step towards conserving these ecosystems.

Ultimately, it is essential to give jaguars the space to continue their activities by preserving their habitats. This can be achieved through education, conservation efforts, and government policies that promote coexistence with jaguars and other species that depend on these ecosystems. By working together, we can ensure the long-term survival of these iconic animals and the ecosystems they inhabit.

Source: Mongabay