...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ocean & coastal management >Urbanization and coral reefs in Guarajuba Beach, north coast of Bahia, Brazil
【24h】

Urbanization and coral reefs in Guarajuba Beach, north coast of Bahia, Brazil

机译：巴西巴伊亚州北海岸瓜拉朱巴海滩的城市化和珊瑚礁

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

Several factors have contributed to the continuing degradation of reefs worldwide. However, local anthropogenic threats are the most serious and lasting causes for the devastation of coral reefs. The ecological relationship between biomes and anthromes provide us an interesting field of current studies. In Guarajuba Beach at the northern coast of Bahia there is a reefs complex which has been studied since the 80s. These reefs are suffering modifications due to the installation and continuous expansion of a tourist residential complex. Therefore it is an interesting study subject of the relation between biomes and anthromes represented here by coral reefs and urban occupation. Our main objective is to initiate the evaluation of urbanization effects on the coral reefs in Guarajuba Beach, based on the study of the urbanization process with the support of historical series of air images and sediment composition analysis, comparing them with results obtained before the occupation process. In these studies the sediment composition does not show big differences from those observed by Nolasco (1987); however there is a displacement towards the front of the reef, which is considered as an urbanization effect, as well as the destruction of dune areas and salt marshes nearby. On account of this process the concentration of organic fragments, which indicates reef origin predominance, appear displaced towards the ocean when compared to that observed in 1987 profiles.
机译：有几个因素导致了全世界珊瑚礁的持续退化。但是，当地人为威胁是破坏珊瑚礁的最严重和持久的原因。生物群落与人类种族之间的生态关系为我们提供了当前研究的有趣领域。在巴伊亚州北部海岸的瓜拉朱巴海滩上，有一个珊瑚礁建筑群，自80年代以来就进行了研究。由于游客住宅区的安装和不断扩展，这些礁石正在遭受改造。因此，这是一个有趣的研究课题，即以珊瑚礁和城市占领为代表的生物群落与人类座标之间的关系。我们的主要目的是在对城市化过程的研究基础上，结合历史的航空影像和沉积物成分分析，将其与占领过程之前获得的结果进行比较，从而开始对瓜拉胡巴海滩珊瑚礁的城市化影响进行评估。在这些研究中，沉积物组成与Nolasco（1987）观察到的并没有很大的不同。但是，向礁石前部的位移被认为是城市化的影响，同时也破坏了沙丘地区和附近的盐沼。由于这一过程，与1987年剖面观测到的相比，表明珊瑚礁起源占优势的有机碎片的浓度似乎向海洋转移。

著录项

  • 来源
    《Ocean & coastal management》 |2013年第6期|50-58|共9页
  • 作者

    Thais Andrade Galvao; Marjorie Csekoe Nolasco;

  • 作者单位

    Department of Exact Sciences, State University of Feira de Santana, Avenida Transnordestina, s, Novo Horizonte, 44036-900 Feira de Santana, Bahia, Brazil;

    Department of Exact Sciences, State University of Feira de Santana, Avenida Transnordestina, s, Novo Horizonte, 44036-900 Feira de Santana, Bahia, Brazil;

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

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