Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Everglades National Park' has mentioned 'Freshwater' in the following places:
Occurrence Sentence Text Source
Contents 1 Geography 2 Geology 3 Climate 4 Hydrography 5 Ecosystems 5.1 Freshwater sloughs and marl prairies 5.2 Tropical hardwood hammocks 5.3 Pineland 5.4 Cypress and mangrove 5.5 Coastal lowlands 5.6 Marine and estuarine 6 Human history 6.1 Native peoples 6.2 American settlements 6.3 Land development and conservation 7 Park history 7.1 Restoration efforts 7.2 Park economics 7.3 Leadership and administration 8 Activities 8.1 Trails 8.2 Camping and recreation 8.3 Dark skies site 9 Threats to the park and ecology 9.1 Diversion and quality of water 9.2 Urban encroachment 9.3 Endangered and threatened animals 9.4 Drought, fire, and rising sea levels 9.5 Non-native species 10 See also 11 References 12 Bibliography 13 External links
Freshwater sloughs and marl prairies[edit]
Alligators thrive in freshwater sloughs and marl prairies.
Freshwater sloughs are perhaps the most common ecosystem associated with Everglades National Park.
The sloughs' availability of fish, amphibians, and young birds attract a variety of freshwater turtles, alligator (Alligator mississippiensis), water moccasin (Agkistrodon piscivorus conanti), and eastern diamondback rattlesnake (Crotalus adamanteus).
Freshwater marl prairies are similar to sloughs but lack the slow movement of surface water; instead, water seeps through a calcitic mud called marl.
[24] Sawgrass and other water plants grow shorter in freshwater marl than they do in peat, the other type of soil in the Everglades which is found where water remains present longer throughout the year.
[25] Animals living in the freshwater sloughs also inhabit marl prairies.
When the region floods again during the wet season, the fish and amphibians which were sustained in the alligator holes then repopulate freshwater marl prairies.
Closest to Homestead on State Road 9336 is the Ernest F. Coe Visitor Center, where a 38-mile (61xc2xa0km) road begins, winding through pine rockland, cypress, freshwater marl prairie, coastal prairie, and mangrove ecosystems.
A view of vast sawgrass expanse north of the Anhinga Trail gives visitors an opportunity to see a freshwater slough up close.
Several walking trails in the park vary in hiking difficulty on Pine Island, where visitors can cross hardwood hammocks, pinelands, and freshwater sloughs.
Two boardwalks allow visitors to walk through a cypress forest at Pa-Hay-O-Kee, which also features a two-story overlook, and another at Mahogany Hammock (referring to Swietenia mahagoni) that takes hikers through a dense forest in the middle of a freshwater marl prairie.
[116] The brochure given to visitors at Everglades National Park includes a statement that reads, "Freshwater flowing into the park is engineered.
[131] It is estimated that within 500 years freshwater habitats in the Everglades National Park will be obliterated by salt water, leaving only the northernmost portion of the Everglades.
Criterion (ix): The Everglades contains vast subtropical wetlands and coastal/marine ecosystems including freshwater marshes, tropical hardwood hammocks, pine rocklands, extensive mangrove forests, saltwater marshes, and seagrass ecosystems important to commercial and recreational fisheries.
Increased salinity in Florida Bay, due to reduced freshwater deliveries, has contributed to major changes in submerged aquatic vegetation, declines in many sportfish, and the spread of algal blooms.