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mia9

Dataset card Data Studio Files
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6.44k
(28.3) 83.5
(28.6) 82.8
(28.2) 79.4
(26.3) 73.5
(23.1) 69.3
(20.7) 75.9
(24.4)
Mean daily minimum °F (°C) 55.1
(12.8) 56.5
(13.6) 58.0
(14.4) 62.0
(16.7) 66.6
(19.2) 72.0
(22.2) 73.5
(23.1) 74.3
(23.5) 74.2
(23.4) 70.9
(21.6) 63.8
(17.7) 58.6
(14.8) 65.5
(18.6)
Mean minimum °F (°C) 38.9
(3.8) 41.7
(5.4) 43.7
(6.5) 50.3
(10.2) 58.0
(14.4) 67.8
(19.9) 70.3
(21.3) 71.0
(21.7) 70.8
(21.6) 61.3
(16.3) 52.1
(11.2) 44.5
(6.9) 35.8
(2.1)
Record low °F (°C) 24
(−4) 29
(−2) 31
(−1) 37
(3) 49
(9) 50
(10) 66
(19) 66
(19) 64
(18) 49
(9) 31
(−1) 27
(−3) 24
(−4)
Average precipitation inches (mm) 1.70
(43) 1.82
(46) 1.93
(49) 2.85
(72) 5.84
(148) 9.00
(229) 6.82
(173) 8.57
(218) 9.01
(229) 5.55
(141) 2.39
(61) 1.88
(48) 57.36
(1,457)
Average precipitation days (≥ 0.01 in) 6.6 6.5 6.7 6.3 10.9 17.2 17.2 19.2 18.3 12.6 7.8 6.6 135.9
Source: NOAA[33][34]
Formative and sustaining processes
Main article: Geography and ecology of the Everglades
The Everglades are a complex system of interdependent ecosystems. Marjory Stoneman Douglas described the area as a "River of Grass" in 1947, though that metaphor represents only a portion of the system. The area recognized as the Everglades, prior to drainage, was a web of marshes and prairies 4,000 square miles (10,00...
Water
A storm over the Shark River in the Everglades, 1966
Water is the dominant force in the Everglades, shaping the land, vegetation, and animal life in South Florida. Starting at the last glacial maximum, 21,000 years ago, continental ice sheets retreated and sea levels rose. This submerged portions of the Florida peninsula and caused the water table to rise. Fresh water sa...
As rain continued to fall, the slightly acidic rainwater dissolved the limestone. As limestone wore away, the groundwater came into contact with the land surface and created a massive wetland ecosystem.[36] Although the region appears flat, weathering of the limestone created slight valleys and plateaus in some areas. ...
Rock
Uneven limestone formations in an Everglades sawgrass prairie
The underlying bedrock or limestone of the Everglades basin affects the hydroperiod, or how long an area within the region stays flooded throughout the year.[36] Longer hydroperiods are possible in areas that were submerged beneath seawater for longer periods of time, while the geology of Florida was forming. More wate...
Initial attempts at developing agriculture near Lake Okeechobee were successful, but the nutrients in the peat were rapidly removed. In a process called soil subsidence, oxidation of peat causes loss of volume.[41] Bacteria decompose dead sawgrass slowly underwater without oxygen. When the water was drained in the 1920...
Fire
Wildfire photographed in 1922
Fire is an important element in the natural maintenance of the Everglades. The majority of fires are caused by lightning strikes from thunderstorms during the wet season. Their effects are largely superficial, and serve to foster specific plant growth: sawgrass will burn above water, but the roots are preserved underne...
Ecosystems
Main article: Geography and ecology of the Everglades
Major landscape types in the Everglades before human action. Source: U.S. Geological Survey
Sawgrass marshes and sloughs
Several ecosystems are present in the Everglades, and boundaries between them are subtle or absent. The primary feature of the Everglades is the sawgrass marsh. The iconic water and sawgrass combination in the shallow river 100 miles (160 km) long and 60 miles (97 km) wide that spans from Lake Okeechobee to Florida Bay...
Sloughs, or free-flowing channels of water, develop in between sawgrass prairies. Sloughs are about 3 feet (0.91 m) deeper than sawgrass marshes, and may stay flooded for at least 11 months out of the year and sometimes multiple years in a row.[51] Aquatic animals such as turtles, alligators, snakes, and fish thrive in...
Wet prairies are slightly elevated like sawgrass marshes, but with greater plant diversity. The surface is covered in water only three to seven months of the year, and the water is, on average, shallow at only 4 inches (10 cm) deep.[53] When flooded, the marl can support a variety of water plants.[54] Solution holes, o...