Top 10 Invasive Species in Louisiana

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Nutria, also known as coypu, are large semi-aquatic rodents with destructive feeding habits that damage wetlands and vegetation. Originally introduced for fur farming, they have become a major invasive species in Louisiana.


The Chinese tallow tree is a highly invasive plant species that spreads rapidly and outcompetes native vegetation. It forms dense thickets, negatively impacting biodiversity and disrupting natural ecosystems.

Chinese Tallow Tree 

Giant salvinia is a free-floating aquatic fern that forms thick mats on the water's surface, blocking sunlight and depleting oxygen levels. It poses a significant threat to aquatic habitats, interfering with navigation, recreation, and water quality.

Giant Salvinia 

Asian carp, including silver carp and bighead carp, have invaded Louisiana's waterways. These invasive fish outcompete native species for food and habitat, leading to ecological imbalances and damaging commercial and recreational fisheries.

Asian Carp 

Formosan termites are highly destructive pests that can cause significant damage to wooden structures. Their large colonies and aggressive feeding behavior make them a serious threat to homes, buildings, and trees.

Formosan Termites 

Feral hogs, also known as wild boars, are highly adaptable and destructive animals. They root up vegetation, destroy crops, and damage natural habitats, leading to soil erosion and impacting native wildlife.

Feral Hogs 

The Cuban treefrog is an invasive amphibian that outcompetes native frog species for resources and prey. Their large size, voracious appetite, and ability to reproduce rapidly make them a significant concern for Louisiana's ecosystems.

Cuban Treefrog 

Apple snails are invasive freshwater snails that can reach high population densities and devastate aquatic vegetation. They pose a threat to rice crops, wetland habitats, and native snail species.

Apple Snails 

The Japanese climbing fern is a fast-growing vine that forms dense mats, smothering and displacing native vegetation. It alters fire regimes, reduces sunlight penetration, and threatens the biodiversity of Louisiana's forests and wetlands.

Japanese Climbing Fern 

Brazilian pepper tree is an invasive plant species that forms dense thickets, crowding out native vegetation and reducing biodiversity. It thrives in a variety of habitats, including wetlands, coastal areas, and disturbed sites, posing a significant threat to Louisiana's ecosystems.

Brazilian Pepper Tree 

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