By U. Thampanya
Mangroves inhabit tropical coastlines and are really considerable alongside deltas and bays the place rivers deliver freshwater and sediment to the ocean. This habitat witnesses nice variability in sedimentation and erosion premiums, in part ruled by means of version in hydrodynamics of rivers in addition to the ocean. Sedimentation and hydrodynamics have a very good impression on coastal and mangroves dynamics. Sediment accretion creates new dust residences for colonization while publicity to waves and currents may perhaps strongly prevent colonization and advertise coastal erosion. In sheltered coastal bays, mangroves have been capable of colonize newly-formed mudflats. Abrupt excessive sedimentation resulted in substantial mortality in Avicennia however it had much less effect on survival and progress of Rhizophora and Sonneratia. Water turbulence had nice impression on Rhizophora seedling progress and survival. against this, Avicennia and Sonneratia have been capable of live to tell the tale and develop good in uncovered stipulations. The integrating types confirmed that water turbulence and seedling herbivory had the most powerful affects on mangrove colonization good fortune.
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Extra info for Mangroves and sediment dynamics along the coasts of Southern Thailand
Example text
Burial). Apparent differences in annual numbers of internodes produced within a species among sites or years were not significant (Thampanya et al. 2002, Chapter 2), but do point at variability in this trait. We have demonstrated in this study that sensitivity to burial varies substantially among species. Different taxa probably cope differently with the stress due to burial (reducing conditions and less oxygen provided to root system). The size of a taller seedling of Rhizophora mucronata and the rapid development of pneumatophores in a faster growing Copyright © 2006 Taylor and Francis Publishers The effect of increasing sediment accretion on the seedlings 39 Sonneratia appear to be useful strategies.
Australian Journal of Botany 44: 297313. Youssef, T. and Saenger, P. 1998. Photosynthetic gas exchange and accumulation of phytotoxins in mangrove seedlings in response to soil physico-chemical characteristics associated with water logging. Tree Physiology 18: 317-324. 1. Results of non-linear regression models examining the effects of time and interaction of time and sediment burial on seedling survival of Avicennia officinalis, Rhizophora mucronata and Sonneratia caseolaris. 002 Copyright © 2006 Taylor and Francis Publishers Chapter 4 Diameter and height-age relationships for common SE Asian mangrove taxa Udomluck Thampanya and Jan E.
Hydrodynamics of mangrove swamps and their coastal waters. Hydrobiologia 247: 141-161. Copyright © 2006 Taylor and Francis Publishers Chapter 3 The effect of increasing sediment accretion on the seedlings of three common Thai mangrove species Udomluck Thampanya, Jan E. ) Engler) were experimentally buried using six sediment accretion levels (0, 4, 8, 16, 24 and 32 cm) in a randomized block design for approximately one year. Avicennia was fivefold more sensitive to burial than Sonneratia and the seedlings of the latter species exhibited the lowest mortality as well as the highest growth rate.
