废弃砖窑中的红树林群落:结构与关联分析

Q3 Agricultural and Biological Sciences Eurasian Journal of Biosciences Pub Date : 2012-07-01 DOI:10.5053/EJOBIOS.2012.6.0.3
Sumit Manna, A. Roy, T. K. Ghara
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引用次数: 3

摘要

背景:沿孟加拉下游胡格里河遗址的砖窑的存在是非常常见的,这种现象不仅限于印度,而且在其他南亚国家也是如此。由于潮汐作用、粉砂质下层疏松、人为干扰较少,废弃砖窑是红树群落形成的重要生境。在此背景下,本研究的目的是可视化结构和关联模式如何调节红树林生态系统的群落动态。材料与方法:将整个研究区划分为37个单元(样方27.31 m2),根据卫星影像和地面真实处理的植被图,测量密度、相对密度、丰度、相对丰度、频率、相对基底面积等结构参数。关联指数(Ochiai、Dice和Jaccard)采用2X2权变/物种关联表进行测定。结果:在现有生境中共发现9科10属10种红树,只有桑海桑(Sonneratia caseolaris)有155个个体,其他红树类群包括Cryptocoryne ciliata、criinum viviparum、Acanthus ilicifolius和Denis scandens。海桑、隐珊瑚和活叶珊瑚的重要值指数较高,表明它们在群落形成中具有重要作用。这3个物种的强正相关也有助于在逆境环境下发展群落。结论:对这些潜在红树林生境的识别和群落动态的研究,将有助于了解红树林建设的性质,为未来红树林濒危物种的造林规划提供依据。
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Mangrove community in an abandoned brick kiln: A structural and association analysis
Background: The presence of brick kiln along the Hoogly river sites of lower Bengal is very usual and this phenomenon is not only restricted to India alone but also to other south Asian countries. The abandoned brick kiln are important habitat for the formation of mangrove community due to tidal action, loose silty substratum and less anthropogenic interference. In this context, the aim of the present study is to visualize how the structural and association pattern regulate the community dynamics of a mangrove ecosystem. Materials and Methods: The entire study area was divided into 37 units (Quadrats of 27.31 sq m). Structural parameters like density, relative density, abundance, relative abundance, frequency, relative basal area were measured based on vegetation map, prepared through satellite image and ground truthing. Association indices (Ochiai, Dice and Jaccard) were measured based on 2X2 contingency/species association table. Results: Out of 10 species under 10 genera and 9 families found in the present habitat, Sonneratia caseolaris is the only mangrove tree species with 155 individuals along with other mangrove associates like Cryptocoryne ciliata, Crinum viviparum, Acanthus ilicifolius and Denis scandens. The high importance value index of Sonneratia caseolaris, Cryptocoryne ciliata, and Crinum viviparum indicated their significant role in community formation. The strong positive association of these 3 species also suggests helping in developing community in stressed environment. Conclusion: Identification of such potential mangrove habitat and study of their community dynamics would be helpful to find out the nature of mangrove establishment for future afforestation programme of threatened mangrove species.
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来源期刊
Eurasian Journal of Biosciences
Eurasian Journal of Biosciences Agricultural and Biological Sciences-Agricultural and Biological Sciences (all)
CiteScore
1.20
自引率
0.00%
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期刊介绍: EurAsian Journal of BioSciences (Abbrev. Eurasia J Biosci or EJOBIOS) is an international, refereed electronic journal. It publishes the results of original research in the field of biological sciences restricted tomorphology, physiology, genetics, taxonomy, ecology and biogeography of both prokaryotic and eucaryotic organisms. The journal encourages submission of manuscripts dealing with plant biology, animal biology, plant physiology, microbiology, hydrobiology, ecology and environmental science, ethnobiology, biodiversity and conservation biology. EurAsian Journal of BioSciences publishes original articles in the following areas: -Agriculture, Fisheries & Food -Anatomy & Morphology -Behavioural Sciences -Biology, Biochemistry and Biotechnology -Biophysics -Biology Education -Cellular Biology and Anatomical Sciences -Ecology, Evolution & Environment -Entomology -Forestry -General Biology -Genetics & Heredity -Life Sciences - Other topics -Microbiology and Immunology -Molecular Biology -Mycology -Palaeontology -Parasitology -Pharmacology & Pharmacy -Physiology and Related Sciences -Plant Sciences -Toxicology -Veterinary Sciences -Virology -Zoology
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