...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Estuarine Coastal and Shelf Science >Microphytobenthic biomass and species composition in intertidal flats of the Nakdong River estuary, Korea
【24h】

Microphytobenthic biomass and species composition in intertidal flats of the Nakdong River estuary, Korea

机译：韩国那洞河口潮间带微生底生物量和物种组成

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Intertidal microphytobenthos (MPB) were investigated monthly from August 2006 to March 2008 at four different sites in the sand flats of Nakdong River estuary, Korea. Samples of surface sediment (ca. 1 cm) were collected, and chlorophyll a was extracted as biomass estimation. Species identification and enumeration were carried out by light microscopy, assisted where necessary by scanning electronic microscopy. Biomass varied between 0.47 and 16.58 μg cm~(-3), abundance changed from 5.25 to 414.75 × 10~3 cells cm~(-3), while the Shannon diversity indexes ranged between 0.69 and 2.35 H'. Thirty-nine MPB taxa were identified, primarily composed of epipelic diatoms, among which Amphora and Navicula were the most abundant genera. Based on the biomass, abundance, species composition and their dynamics, MPB assemblages of sampling sites were grouped into three distinct communities corresponding to their sediment composition characteristics. Multivariate correlation analysis revealed that biomass was positively related to mud and very fine sand, negatively related to fine and medium sand, but not significantly related to environmental factors such as pore water nutrients, light intensity and salinity, which fluctuated rapidly during emersion period. Cluster analysis corroborated the division of MPB communities according to site types on seasonal scales, and also showed seasonality between sites by cluster of all summer groups. Principal component analysis identified that variability in species composition was significantly affected by mud, very fine sand, fine sand, light intensity, and sediment temperature. This study suggests that sediment composition plays an important role in the functioning of intertidal MPB communities in estuarine ecosystems.
机译：2006年8月至2008年3月，每月在韩国那洞河河口滩涂的四个不同地点调查潮间带微底栖动物（MPB）。收集表面沉积物（约1厘米）样品，并提取叶绿素a作为生物量估算值。通过光学显微镜进行物种鉴定和计数，必要时通过扫描电子显微镜进行辅助。生物量在0.47〜16.58μgcm〜（-3）之间变化，丰度从5.25〜414.75×10〜3个细胞cm〜（-3）变化，香农多样性指数在0.69〜2.35 H'之间。鉴定出39个MPB类群，主要由上生硅藻组成，其中Amphora和Navicula是最丰富的属。根据生物量，丰度，物种组成及其动力学，将采样点的MPB组合分为三个不同的群落，以符合其沉积物组成特征。多元相关分析表明，生物量与泥浆和超细砂呈正相关，与中细砂呈负相关，而与孔隙水养分，光照强度和盐度等环境因素无显着关系，在萌发期间其波动较大。聚类分析证实了MPB社区根据站点类型在季节尺度上的划分，并且还显示了所有夏季群体的站点之间站点之间的季节性。主成分分析表明，泥浆，极细砂，细砂，光强度和沉积物温度显着影响物种组成的可变性。这项研究表明，沉积物的组成在河口生态系统中潮间带MPB群落的功能中起着重要作用。

著录项

  • 来源
    《Estuarine Coastal and Shelf Science》 |2009年第4期|663-672|共10页
  • 作者

    GuoYing Du; Moonho Son; Misun Yun; Soonmo An; Ik Kyo Chung;

  • 作者单位

    Division of Earth Environmental System, Pusan National University, Busan 609-735, Republic of Korea Department of Biological Engineering, Ocean University of China, Qingdao 266003, China;

    Division of Earth Environmental System, Pusan National University, Busan 609-735, Republic of Korea;

    Division of Earth Environmental System, Pusan National University, Busan 609-735, Republic of Korea;

    Division of Earth Environmental System, Pusan National University, Busan 609-735, Republic of Korea;

    Division of Earth Environmental System, Pusan National University, Busan 609-735, Republic of Korea;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    microphytobenthos; diatom; biomass; composition; abundance; environmental factors; Korea; nakdong river estuary;

    机译：微型底栖动物硅藻生物质组成;丰富;环境因素;韩国;那洞河口;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号