Effects of the physical structure of mangrove vegetation on a benthic faunal community
Effects of the physical structure of mangrove vegetation on a benthic faunal community
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DOI：
10.1016/j.jembe.2009.11.015
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发表时间：
2010-02-15
影响因子：
2
通讯作者：
Tongnunui, Prasert
中科院分区：
文献类型：
--
作者：
Kon, Koetsu;Kurokura, Hisashi;Tongnunui, Prasert
通过在四考溪附近的潮间带红树林进行野外操作实验，研究了树冠和根系结构对底栖动物群落的影响，以阐明红树林的物理结构对底栖动物群落的作用。泰国董里府。试验设人工遮荫、根系模拟结构、遮荫与结构混合、林窗对照（无红树林植被）和红树林林下对照5个处理。经过18个月的观察，发现在低温高湿的基质中，遮荫处理的物种丰富度和表生动物的丰度都有所增加。食物来源条件也发生了变化，从丰富的微型底栖植物（相对较高的营养价值）到因遮荫而富集的红树林碎屑。这些结果表明，物理结构的红树林植被有利于栖息的潮间带表生动物，树冠遮荫具有重要的功能，提供凉爽潮湿的表面基板，尽管也诱导减少有利的食物资源（即微型植物底栖动物）。(C)2009 Elsevier B.V.保留所有权利。
Clarification of the role of the physical structure of mangrove for benthic faunal communities was sought by investigating the impacts of canopy shade and root structure on (1) the physical environment, including temperature, moisture and grain size of the substrate sediment, (2) benthic faunal distribution, and (3) food resource availability, using a field manipulated experiment at an intertidal mangrove forest around Sikao Creek, Trang Province, Thailand. Five treatments were established, including artificial shade cover, root simulated structure, mix (shade and structure) and control of the canopy gap (which had no mangrove vegetation), in addition to forest control under the mangrove canopy. Following 18 months of observation, species' richness and abundance of epifauna were found to have increased in shaded treatments, which had low temperature and high moisture substrate. Food resource conditions had also altered from abundant microphytobenthos (relatively high nutritional values) to enriched mangrove detritus due to shading. These results indicated that the physical structure of mangrove vegetation facilitates the habitation of intertidal epifauna, canopy shade having an important function in providing cooler wetter surface substrate, despite also inducing a reduction of favorable food resources (i.e. microphytobenthos). (C) 2009 Elsevier B.V. All rights reserved.