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Knight J.M., Dale P.E.R., Dunn R.J.K., Broadbent G.J., Lemckert C.J., 2008. Patterns of tidal flooding within a mangrove forest : Coombabah Lake, Southeast Queensland, Australia. Estuarine, Coastal and Shelf Science 76 (2008) 580-593.
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Knight, J. M.; Dale, P. E. R.; Dunn, R. J. K.; Broadbent, G. J.; Lemckert, C. J.
2008
Patterns of tidal flooding within a mangrove forest
Coombabah Lake, Southeast Queensland, Australia. Estuarine, Coastal and Shelf Science
76, 580-593
Publication
Available for editors [request]
Tidal flooding and surface drainage patterns have often been used to describe mangrove species zonation. However, in mangrove forests
exhibiting little topography, ambiguous species distributions and/or few species, such approaches are ineffective. We identified four
physiognomic mangrove forest types (Riverine, Fringing, Overwash and Basin) at Coombabah Lake, a tidal lake in southeast Queensland,
Australia and investigated tidal flooding patterns using synoptic surveys of tidal observations at the local Standard Port combined with
local water depth observation. Subsequently three sub-types of the basin forest type were identified: (1) Deep Basin Forest with mature
trees, ~50 cm standing water and ~3 tides per year; (2) Medium Depth Basin Forest with intermediate tree development, ~15-30 cm
standing water and 20-40 tides per year; and (3) Shallow Basin Forest with relatively recent mangrove establishment, 5-15 cm standing
water and ~80 tides per year. These three basin sub-types were found to flood at different tide heights with the Shallow Basin flooding
for tides above mean high water springs and the Deep Basin flooding only for tide heights approaching the highest astronomical tide. We
propose that these basin types represent a succession in mangrove forest development that corresponds with increasing water depth and
tree maturation over time. The succession not only represents increasing age but also change in basin substrate composition. This is manifest
as increasing pneumatophore density and an increasing area of basin surface occupied by contiguous pneumatophore cover. As a result,
it seems that mangrove development is able to modify tidal flooding into the basin by increasingly impeding water movement.
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Coombabah Lake for Avicennia marina (Forssk.) Vierh.
Coombabah Lake for Bruguiera Lam.
Coombabah Lake for Ceriops Arn.
Coombabah Lake for Rhizophora L.
Coombabah Lake for Bruguiera Lam.
Coombabah Lake for Ceriops Arn.
Coombabah Lake for Rhizophora L.