Effects of Exotic Spartina alterniflora on Distribution and Diet of Crab in Mangroves

本论文调查了福建云霄漳江口国家级红树林自然保护区红树林林缘、白骨壤群落、秋茄群落和短叶茳芏群落四个生境(以下合称红树林区)蟹的种类、密度和生物量及其季节变化，并通过比较互花米草群落与红树林林缘、白骨壤群落、秋茄群落及短叶茳芏群落中蟹的种类、密度和生物量差异揭示互花米草入侵对红树林区蟹的分布的影响。此外，运用稳定同位素技术分析了红树林林缘、白骨壤群落、秋茄群落和短叶茳芏群落蟹的食物来源，并通过比较互花米草群落与红树林林缘、白骨壤群落、秋茄群落和短叶茳芏群落中蟹的δ13C值和δ15N值揭示了互花米草入侵对红树林区蟹的食物来源的影响。主要结果如下： 1. 在采样地点共发现蟹类4科12种，以方蟹科为...Abstract This study was designed to understand how the exotic Spartina alterniflora invasions influence crabs’ species, biomass and food composition. The study was carried out at Zhangjiang Estuary of Fujian, China. Five habitats were chosen, including Mangrove fringe, monospecific forest of Avicennia marina, monospecific forest of Kandelia obovata, Cyperus malaccensis and Spartina alterniflora m...学位：理学硕士院系专业：生命科学学院生物学系_动物学学号：2162007115197

Study on the Distribution and Habitat Selection of Two Burrowing Crabs in response to Spartina alterniflora Invasion in Mangroves of Zhangjiang Estuary, China

蟹类是红树林湿地底栖动物中的优势类群，多数种类具有掘穴行为，对潮间带生态系统扰动最为深刻。互花米草入侵中国东南沿海红树林，已迅速改变潮间带植被分布格局，并导致了蟹类的群落结构和生态系统功能发生变化。本论文选择福建漳江口“红树林——互花米草生态交错带”，通过陷阱法，监测红树林、互花米草丛和光滩3种生境中褶痕拟相手蟹和长足长方蟹这两种优势种的时空动态；采用野外控制实验和室内饲喂实验等方法，辨析决定蟹类生境选择的生物和非生物因素，阐明蟹类和互花米草相互作用的特征、变化过程及其对环境变化的响应机制，探讨互花米草入侵对红树林的影响及其后果。主要结果如下： 1、漳江口红树林区褶痕拟相手蟹和长足长方蟹在红...Coastal wetlands in China have a great diversity of native burrowing crabs. As physical ecosystem engineers, crabs play important roles in the intertidal ecosystems. Crabs burrow into the sediment and introduce air and plant nutrients that are vital to the mangroves. Spartina alterniflora (hereafter Spartina), which is invading the entire Chinese coast, occupying mudflats throughout this range and...学位：理学硕士院系专业：环境与生态学院_生态学学号：3312014115167

Comparasion study on the effects of mangrove wetland sediments on the sequestration of typical sulfonamides from the estuarine water

作为陆地污染物进入海洋的屏障，红树林已然成为众多典型污染物汇聚的场所之一。近年来，海产养殖业的大肆兴起更是加重了抗生素在红树林区的直接污染。锁定态是控制土壤抗生素归宿的主要因素，具有环境存在时间长，危害大等特点，可通过再释放重回到环境中，对环境造成长期危害。对典型磺胺类在红树林群落沉积物中锁定能力的研究对于探索抗生素在红树林区的环境行为和红树林湿地抗生素污染控制及修复功能评估具有现实意义。本文选取了12种水产、禽畜及人用较为频繁的典型磺胺类药物，分别为磺胺甲噻二唑(sulfamethizole,SMT)、磺胺二甲基异嘧啶(sulfaisodimidine,SIM)、磺胺噻唑(sulfathia...Mangroves had been the pools of pollutants from land, for the functions of marine protective screen. Nowadays, with the aquaculture developing soon, mangroves were directly polluted by the aquaculture wastewater around them. Sequestration is the main control factor for the fate of antibiotics in soil, and have the characters of long-term exist and more harm, can be released into soil causing heavi...学位：工学硕士院系专业：环境与生态学院_环境工程学号：3312012115163