湛江高桥红树林贝类资源调查

在2002年和2005年2次调查的基础上,2006年7月对湛江高桥的红树区贝类资源在相同取样点进行了定量和定性调查,调查的红树林区有高桥镇的东村、西村、长田、红坎4个点.此次调查结果表明,高桥红树林区贝类种类组成有3纲6亚纲11目26科43属60种.其中樱蛤科有9种;牡蛎科、帘蛤科各5种;蚶科、贻贝科、织纹螺科各4种;其余各科均在3种以下.通过与前两次的调查结果比较分析,高桥红树林区的贝类无论是从栖息密度还是从生物量上都有明显下降的趋势.因此,采取多方位的保护措施,以使红树林区生物多样性资源得到可持续利用势在必行.     

红树林凋落叶自然分解过程中土壤微生物的数量动态

用人工模拟凋落叶方法.研究了红树林(秋茄Kandelia candel)凋落叶自然分解过程中土壤微生物数量的变化,结果表明:凋落叶有利于土壤异养微生物的生长,繁殖,使其数量明显增多;从而加速了凋落叶的分解作用,引起凋落叶分解的异养微生物,从数量看,细菌占绝对优势,它是落叶分解起先蜂和主导作用的微生物类群;丝状真菌也有不可忽视的作用;放线菌似乎被抑制而减少。     

The records of coastline changes reflected by mangroves on the Sunda Shelf since the last 40 ka

This paper presents a 40000-year-long high-resolution mangrove record from sediments of Core 18300, 18302 and 18323 on the continental shelf of the southern South China Sea and reconstructs the coastline changes on Sunda Shelf since the last 40000 years. In the period Marine Isotope 3, the old Sunda Shelf had low sea level, and it was partly exposed. Flourishing vegetations grew on the exposed old land. Mangroves developed along the coastline. On the Last Glacial Maximum, the sea level dropped greatly, coastline moved from inner shelf to outer shelf, the Old Sunda Land exposed further, and the lowering sea level induced the gradual disappearing of mangroves from the inner Sunda Shelf to the outer Sunda Shelf. And pioneer vegetation ferns covered the broadly exposed old land immediately. At the time of the last Deglaciation, sea level rose greatly, the coastline moved to the sea and the Sunda Shelf was drown again. Mangroves were emergent again from outer shelf to inner shelf and developed quickly.     

福鼎滨海红树林与沉积环境

从福鼎市八尺门一直向东到沙埕港的一片滨海区域,有数十块滨海湿地生长红树林,为了揭示这些红树林能否形成泥炭沼泽,通过近年来在福鼎市铁锵、南派、关盘、八尺门、龙安等滨海区域进行地质钻探和通过分析该区域的沉积环境和沉积物特征,阐明古代潮坪环境成煤可能性。     

Ecological Relationship between Mud Crab Scylla serrata (Forskal) and Mangroves and the Pattern of Utilization

The ecological relationship between mud crab Scylla serrata(Forskal)and mangroveswas described in this paper.Mangrove swamps are important reproductive places for mud crabs,where zoeae,megalopae,juveniles from 1st to 14th instar,adult crabs and ovigerous female crabswere found.Mangrove roots and the leaf litter are the shelters of the mud crab.The zoeae andmegalopae of mud crab can normally grow and develop on the plankton and debris that are well-supplied in mangrove swamps.There are a lot of Phascolesoma,Mollusca and Crustacea whichconstitute the delicious foods of the mud crab in mangrove swamps.The larger crabs have apreference for Ostrea,Balanus and Vignadula which usually amply adhere and endanger themangroves,so the mud crab is helpful for the development of the mangrove communties.Finallya pattern of ecological culture of the mud crab in mangrove swamps was suggested.     

广西红树林湿地研究概况

从生境条件、植物生态、动物生态、恢复与重建、资源保护与可持续利用等方面综述了广西红树林湿地近25年来的研究进展,并指出了存在的问题及今后的主要研究方向.     

红树林凋落叶自然分解过程中土壤微生物生理类群的变化

业已证明红树林凋落叶自然分解过程中,土壤微生物起着重要的作用。本文报告与有机碳、氮矿质化密切相关的土壤微生物主要生理类群的变化。1 材料与方法 凋落叶模拟,样本采集、处理和测定方法如文献。现补充几点:     

广西英罗港红树林区水体浮游植物种类组成和数量分布的初步研究

分析了广西英罗港红树林区1992年两个季度调查所得的定量样品,经鉴定有浮游植物97种(含变种、变型)。初步研究了浮游植物的种类组成和数量分布特点.     

Mangrove halacarid fauna (Halacaridae,Acari) of the Dampier region,Western Australia,with description of five new species

Amongst the vagile epifauna on the mangrove trees Avicennia marina and Rhizophora stylosa, Acari numerically play an important role, contributing 20-75% of the fauna. The two major groups are the prostigmatids and oribatids. Amongst the prostigmatid mites, halacarids are regularly present from the upper littoral fringe, inundated only at very high tide, to the permanently wet substrata adjacent to tide pools. Oribatids are most abundant in permanently wet substrata and often dominate the mite fauna. Five halacarid species, regularly found amongst the epibios on mangroves, are described, Isobactrus australiensis n. sp., Rhombognathus ocularis n. sp., Agauopsis dasyderma n. sp., Copidognathus lutarius n. sp. and C. piger n. sp. Isobactrus australiensis often is the only mite in the upper zone not reached by every high water.