The Chihuahuan Desert, North America's largest desert ecoregion, is bounded by the Sierra Madre Occidental and the Sierra Madre Oriental; it extends southward into Mexico. Recognized for its biological diversity, the Chihuahuan Desert is a rain shadow desert shaped by the surrounding mountain ranges. Home to unique endemic species, including plants and animals, the region showcases a mosaic of landscapes, from grasslands to shrublands.
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The Valdivian temperate forests ecoregion is located in the Southern Cone of South America. It covers a narrow strip between the western slope of the Andes and the Pacific Ocean. The forests are characterized by their dense understories of bamboo, ferns, and evergreen trees.
Várzeas are extensive lowland floodplain areas bordering the Amazon River and its tributaries. As a result, Várzea forests are subject to seasonal flooding and may also contain more open, seasonally flooded habitats such as grasslands, including floating meadows.
The Venezuelan Andes montane forests ecoregion is located in the northern arm of the Venezuelan Andes. Surrounded by xeric valleys and páramo, the richness of species and a large number of endemic species make this one of the most interesting areas of Venezuela in terms of biodiversity.
The Yucatán dry forests are located on the northwest section of the Yucatán Peninsula. The region is flat with vegetation consisting of thorn scrub and cacti and, isolated from other dry forests by the sea, constitutes a unique island of vegetation in the Gulf of Mexico region.
The Yucatán moist forests are an ecoregion of the tropical and subtropical moist broadleaf forests biome. This ecoregion serves as an important biological corridor between the northern Yucatán peninsula and the moist forests of Central America.