Journal Title
Title of Journal: Plant Ecol
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Abbravation: Plant Ecology
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Publisher
Springer Netherlands
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Authors: Nobuo Imai Masaaki Takyu Yukito Nakamura Takehisa Nakamura
Publish Date: 2006/03/23
Volume: 186, Issue: 1, Pages: 37-46
Abstract
Tropical mangrove forests are characterized by clear zonation along a tidal gradient and it has been supposed that the zonation is primarily controlled by soil factors However effects of disturbance on mangrove forests are still not well understood and may play an important role on the vegetation patterns and forest dynamics in some forest formations In this study the pattern of disturbance regime and its effects on regeneration of tropical mangrove forests along a tidal gradient were investigated in Ranong Thailand We established one or two 05 ha plots in four vegetation zones ie Sonneratia alba–Avicennia alba zone Rhizophora apiculata zone Ra – Bruguiera gymnorrhiza zone Ceriops tagal–Xylocarpus spp zone Gap size percentage gap area to total study area and individual gap size was the largest in Sa–Aa zone which is located on the most seaward fringe and it declined from seaward to inland Canopy trees of S alba and A alba had stunted trunks and showed low tree density On the contrary canopy dominants in the other three inland zones eg R apiculata B gymnorrhiza and Xylocarpus spp had slender trunks and showed high tree density Accordingly differences in disturbance regime among the four zones were resulted from the forest structural features of each zone Disturbance regime matched with regeneration strategies of canopy dominants Seedlings and saplings of S alba and A alba which need sunny condition for their growth were abundant in gaps than in understorey By contrast R apiculata B gymnorrhiza and Xylocarpus spp which can tolerate less light than S alba and A alba had greater seedling and sapling density under closed canopy than gaps Many large gaps may enhance the abundance of S alba and A alba in Sa–Aa zone and a few small gaps may prevent the light demanding species to establish and grow in the other inland zones Correspondence of disturbance regime and regeneration strategies eg light requirement of canopy dominants may contribute to the maintenance of the present species composition in each of the vegetation zonesThis study was funded by the Sasakawa Scientific Research Grant from The Japan Science Society Permission to work in the mangrove forests of Thailand was granted by the National Research Council of Thailand We thank the staffs of Ranong Mangrove Forest Research Centre and the members of the Laboratory of Forest Ecology Department of Forest Science Tokyo University of Agriculture for their support in the field research We thank S Aksornkoae S Havanon and W Meepol for their valuable advice and helpful discussion
Keywords:
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Other Papers In This Journal:
- Relationships between carbon allocation and partitioning of soil respiration across world mature forests
- Phylogenetic structure of a palm community in the central Amazon: changes along a hydro-edaphic gradient
- The nutrient status of epiphytes and their host trees along an elevational gradient in Costa Rica
- The nutrient status of epiphytes and their host trees along an elevational gradient in Costa Rica
- Recovery of genetic diversity in threatened plants through use of germinated seeds from herbarium specimens
- Allocation to reproduction following experimental defoliation in Platanthera bifolia (Orchidaceae)
- Regional and local variation in seedling emergence, mortality and recruitment of a perennial herb in Mediterranean mountain habitats
- Does taxonomic homogenization imply functional homogenization in temperate forest herb layer communities?
- Competitive responses of the rare Viola elatior and the common Viola mirabilis
- Interspecific competition enhances nitrogen fixation in an actinorhizal shrub
- Can seed caching enhance seedling survival of Indian ricegrass ( Achnatherum hymenoides ) through intraspecific facilitation?
- Short-term response and recovery of bluebells ( Hyacinthoides non - scripta ) after rooting by wild boar ( Sus scrofa )
- Mistletoes via input of nutrient-rich litter increases nutrient supply and enhance plant species composition and growth in a semi-arid savanna, southwest Zimbabwe
- Conifer colonization of a 350-year old rock fall at Lassen Volcanic National Park in northern California
- Extent and spatial patterns of grass bald land cover change (1948–2000), Oregon Coast Range, USA
- The plant vigour hypothesis revisited – how is browsing by ungulates and elephant related to woody species growth rate?
- The significance of deadwood for total bryophyte, lichen, and vascular plant diversity in an old-growth spruce forest
- Established native perennial grasses out-compete an invasive annual grass regardless of soil water and nutrient availability
- A fifty-year reconstruction of annual changes in the spatial distribution of Pinus banksiana stands: does pattern fit competition theory?
- Demographic effects of fire on two endemic plant species in the longleaf pine-wiregrass ecosystem
- Community-level relaxation of plant defenses against herbivores at high elevation
- Composition and structure of a diverse tree community at the edges of a Brazilian Amazon rainforest island surrounded by marshes and mangroves
- Low leaf N and P resorption contributes to nutrient limitation in two desert shrubs
- Mycorrhizal fungi affect plant growth: experimental evidence comparing native and invasive hosts in the context of forest fragmentation
- Ecotypic differentiation of two sympatric chemotypes of Barbarea vulgaris (Brassicaceae) with different biotic resistances
- Fine root growth and nutrient release in decomposing leaf litter in three contrasting vegetation types in central Amazonia
- Assessing the impact of land use and climate change on the evergreen broad-leaved species of Quercus acuta in Japan
- Light heterogeneity interacts with plant-induced soil heterogeneity to affect plant trait expression
- Inter- and intraspecific variation in stomatal pore area index along elevational gradients and its relation to leaf functional traits
- Diversity of wetland vegetation in the Bulgarian high mountains, main
gradients and context-dependence of the pH role
- Rainforest fragmentation and the demography of the economically important palm Oenocarpus bacaba in central Amazonia
- Does release from natural belowground enemies help explain the invasiveness of Lygodium microphyllum ? A cross-continental comparison
- Temporal changes in species composition in Fescue Prairie: relationships with burning history, time of burning, and environmental conditions
- Liana distribution and community structure in an old-growth temperate forest: the relative importance of past disturbances, host trees, and microsite characteristics
- Lack of sex-specific differences in mycorrhizal associations and response to herbivory in the gynodioecious herb, Polemonium foliosissimum
- Effects of fruit thinning on fruit and seed features of Cistus ladanifer
- The combined effect of waterlogging, extractable P and soil pH on α-diversity: a case study on mesotrophic grasslands in the UK
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