Download Asia-Pacific Symposium on Mangrove Ecosystems: Proceedings by N. J. Skelton, W. G. Allaway (auth.), Yuk-Shan Wong, Nora F. PDF

By N. J. Skelton, W. G. Allaway (auth.), Yuk-Shan Wong, Nora F. Y. Tam (eds.)

Mangrove ecosystems are general formations present in coastal deposits of dust and silt during the tropics and a few distance into the subtropical latitudes. the complete wordwide mangrove quarter, that is predicted at approximately 170,000 km2 with a few sixty species of timber and shrubs particular to the habitat, dominates nearly seventy five% of the world's beach among latitudes 25°N and 25°S. Such particular intertidal ecosystems aid genetically diversified groups of terrestrial and aquatic organisms which are of direct or oblique socioeconomic values. Mangrove forests play very important roles as coastal stabilization and safety opposed to winds and storms; manufacturers of food, wooded area assets and animal species of financial value. lately, the problems at the conservation, right usage and administration of mangrove forests were extensively mentioned. regrettably, overexploitation and destruction of mangroves heavily threatens the sustainability of this kind of certain atmosphere.
This quantity contains papers on 3 major components: contemporary advances in mangrove ecology; software and usage of mangrove assets; and conservation and administration of the ecosystems.

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Extra info for Asia-Pacific Symposium on Mangrove Ecosystems: Proceedings of the International Conference held at The Hong Kong University of Science & Technology, September 1–3, 1993

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The plants were placed on four shelves at different levels in each tank to give a range of durations of flooding, and of different depths of maximal inundation. The intention was to provide pairs of shelves on which the plants were at the same depth for different flooding-times (Table 1). Each shelf held up to 18 pots. At high tide the plants on the uppermost level in each tank had access to atmospheric oxygen via the stem. In all plants except some of those at the very deepest level some leaves and stem were exposed to the air throughout the tidal cycle, by the end of the growth period.

Only three plants had pneumatophores, so the conductance results for most plants were due to conductance through the stem base alone. The marked effect of pneumatophore devel- opment can be seen in large error-bars of the two intermediate-range treatments. The gas space volume and hence the total maximum amount of stored oxygen per plant showed no statistically significant effect of extent of inundation. When expressed per unit dry mass, the oxygen storage capacity of the roots was also independent of the extent ofinundation at which the plant was grown (Fig.

The uulabeled bars represent 100 I'm. aggregates ( > 100 /-tm) in suspension over a fluid mud bed. with typically 1700 to 5300 aggregates per litre. The aggregates account typically for 5 to 95% of the total particle mass in suspension. , have little effect on the scattering of light, as opposed to small non flocculated particles. 41- 1, so other sampling techniques are necessary. An appropriate technique is to sample the water using Owen tubes or Niskin bottles. Water is not pumped or drawn through the port, but a sample is taken by immersing a special microscope slide in the sampling tube and capping the slide while still immersed (Gibbs & Konwar, 1986).

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