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Human disturbance poses the number one concern to this fragile ecosystem. The Sonoran desert contains the two large cities of Tucson and Phoenix, Arizona, which contain over 3 million people. [ 15 ] These dense human populations deplete the water table of the entire desert and are sending the desert towards desertification.
Ecoregions of North America, featuring the 50 United States, the District of Columbia and the five inhabited territories. The following is a list of ecoregions in the United States as identified by the World Wide Fund for Nature (WWF).
Florida is a biodiverse state, with 3,500 native vascular plants and 1,500 vertebrates, a higher number than all but three other states. [52] A 2003 United Nations Food and Agriculture Organization study stated that the Florida Straits had the highest biodiversity in the Atlantic Ocean , and were the home to 25 endemic species.
Florida's aquatic ecosystem will be undergoing some major changes, and it's all thanks to research done by a 13-year-old. While fishing with her marine biologist father, The Palm Beach Post ...
In 2002, Florida determined how to implement this at the state and county levels. [4]: 7 After a meeting in 2002, the FDEP and the Florida Fish and Wildlife Conservation Commission formed a team of interagency marine resource professionals of all levels of US government, of scientists and other stakeholders. From May to November 2003, the ...
Florida mangrove plant communities covered an estimated 430,000 to 540,000 acres (1,700 to 2,200 km 2) in Florida in 1981. Ninety percent of the Florida mangroves are in southern Florida, in Collier, Lee, Miami-Dade and Monroe Counties.
The ecology of Florida considers the state's two Level I and three Level II/III ecoregions containing more than 80 distinct ecosystems. [ 1 ] [ 2 ] They differ in hydrology , climate, landforms, soil types, flora, and fauna, forming a global biodiversity hotspot .
The Mojave Desert is the hottest desert in North America, located primarily in southeastern California and Southern Nevada. Its total area is 22,000 sq mi (57,000 km 2). The largest cold desert is the Great Basin Desert, which encompasses much of the northern Basin and Range Province, north of the Mojave Desert.