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| Plate 13.--Classification: SYSTEM Estuarine, SUBSYSTEM Intertidal, CLASS Unconsolidated Shore, SUBCLASS Cobble-Gravel, WATER REGIMES: Regularly Flooded (darker zone at edge of water) and Irregularly Flooded (remainder of shore), WATER CHEMISTRY Euhaline. Mean tidal range in this area of the Arctic Ocean is approximately 15 cm (6 in). (Mikkelsen Bay, North Slope Borough, Alaska; July 1985; Photo by F. C. Golet) |
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| Plate 14.--Classification: SYSTEM Estuarine, SUBSYSTEM Intertidal, CLASS Unconsolidated Shore, SUBCLASS Mud, WATER REGIME Regularly Flooded, WATER CHEMISTRY Mixohaline. Turnagain Arm, a large bay off Cook Inlet, is 4-7 km (2.5-4 mi) wide at this location. Mean tidal range is 9.2 m (30 ft), and the entire area shown here is dewatered at low tide. (Municipality of Anchorage, Alaska; June 1985; photo by F. C. Golet) |
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| Plate 15.--Classification: SYSTEM Estuarine, SUBSYSTEM Intertidal, CLASS Unconsolidated Shore, SUBCLASS Mud, WATER REGIME Irregularly Flooded, WATER CHEMISTRY Mixohaline, SOIL Mineral. Alkali grass (Puccinellia grandis) grows in widely scattered clumps at the right-hand edge of the photo. Mean tidal range at Fire Island (background left) is 7.4 m (24.4 ft). The cracks on these mud flats are evidence of the irregularly flooded tidal regime. (Municipality of Anchorage, Alaska; June 1985; Photo by F. C. Golet) |
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| Plate 16.--Classification: SYSTEM Estuarine, SUBSYSTEM Intertidal, CLASS Emergent Wetland, SUBCLASS Persistent, DOMINANCE TYPE Spartina alterniflora, WATER REGIME Regularly Flooded, WATER CHEMISTRY Mixohaline, SOIL Mineral. Saltmarsh cordgrass is the only plant growing in the regularly flooded zone of this salt marsh. Saltmeadow cordgrass (Spartina patens), seaside goldenrod (Solidago sempervirens), and the sedge, Carex paleacea, grow at the landward edge of the marsh. The photo was taken at high tide. (Essex County, Massachusetts; September 1985; Photo by F. C. Golet) |