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RELATIONSHIP BETWEEN PRODUCTIVITY
AND HYDROLOGY
FIG 13-5. The relationship of cypress swamp productivity
and hydrologic conditions.( from Mitsch and Ewel, 1979 cw 1979 by American
Midland Naturalists.)
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MAJOR TYPES OF MANGROVE WETLANDS
FIG. 10-2. Classification of mangrove wetlands according
to hydrodynamic conditions. General classification is a & b) fringe
mangroves; c) riverine mangroves; d) basin mangroves; and e & f) scrub
(dwarf) mangroves.)After Wharton et al., 1976; Lugo 1980, and Clintron et
al., 1985.)
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ZONES OF MANGROVE VEGETATION
FIG 10-4. Zonation of Florida mangrove wetlands. Note
adaptation of mangroves such as prop roots, viviparous seedlings, and black
mangrove pneumatophores.(After Davis, 1940)
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MANGROVE WETLANDS
ECOSYSTEM FUNCTIONS
Productivity
dependent on tidal / runoff factors
-Highest in riverine
-lower in basin
-lowest in dwarf
Marsh
is a producer of detritus for river and adjacent estuary
- Riverine @ 94% export of organic litter
-Basin @ 21% export of organic litter
Detrital
decomposition is the major pathway for energy utilization
Transformer
of nutrients
Marsh
provides benthic, aquatic, and avian habitat
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ENERGY FLOW IN A MANGROVE
Fig 10-8. Detritus-based food web in south Florida estuary
showing the major contribution of mangrove detritus.(From W.E. Odum 1970,
p. 140).
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