• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Effects of depth and ultraviolet radiation on coral reef turf algae
【24h】

Effects of depth and ultraviolet radiation on coral reef turf algae

机译：深度和紫外线辐射对珊瑚礁草藻的影响

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

Despite the increasing dominance of turf algae in coral reefs, few studies have investigated their physiological and ecological responses to changes in abiotic factors. We tested the effects of depth and ultraviolet radiation on turf algae at different levels of successional stages using two experiments. Depth-related differences were found for all turf algal communities, characterized by a higher amount of the cyanobacteria taxon Dichothrix and the red filamentous genera Poly-/Herposiphonia in the shallow and the appearance of oscillating cyanobacteria in deeper waters. In the first experiment cross-depth transplantation of 153 days old communities influenced percentage cover, biomass and taxa compositioa Downward transplantation lowered overall biomass and abundance of the foraminifera Sorites, whereas the crustose green alga Pringsheimiella and filamentous cyanobacteria colonized the communities. A nearly reverse pattern was observed in upward transplanted communities. Overall we distinguished between sensitive taxa, like Oscillatoria, and taxa able to acclimate to alterations in their environment, like Pringsheimiella, Poly/Herposiphonia and Dichothrix. In the second experiment, algae grown for 285 days at 5 m were exposed together with a set of sterile settlement tiles to three UVR regimes at 2 m for 22 days. UVR had no effect on turf algal communities regardless of successional stage. This study highlights the presence of high light and UV tolerant species. The high UV tolerance of turf communities may confer a competitive advantage over other more sensitive coral reef biota, such as corals. This study demonstrates that turf algae are dynamic communities exhibiting species-specific resistance to environmental changes.
机译：尽管草皮藻在珊瑚礁中的优势日益增强，但很少有研究调查其对非生物因子变化的生理和生态反应。我们使用两个实验测试了深度和紫外线辐射在不同级别的演替阶段对草皮藻的影响。在所有草皮藻群落中都发现了与深度相关的差异，其特征是浅海区的蓝藻类群狄氏菌和红色丝状的Poly- / Herposiphonia属含量较高，而深水区则出现蓝藻振荡型。在第一个实验中，对153天大的群落进行交叉深度移植影响了覆盖率，生物量和类群组成向下移植降低了有孔虫的总生物量和丰富度，而有壳的绿藻Pringsheimiella和丝状蓝细菌则使该群落定居。在向上移植的社区中观察到几乎相反的模式。总体而言，我们区分了敏感的类群（如颤藻）和能够适应环境变化的类群，如Pringsheimiella，Poly / Herposiphonia和Dichothrix。在第二个实验中，将在5 m下生长285天的藻类与一组无菌沉降瓦一起在2 m下暴露于3种UVR方案下22天。不管演替阶段如何，UVR对草皮藻类群落均无影响。这项研究突出了耐高光和紫外线的物种的存在。草坪社区对紫外线的高耐受性可能赋予其相对于其他更敏感的珊瑚礁生物群（例如珊瑚）的竞争优势。这项研究表明，草皮藻是动态群落，对环境变化表现出特定物种的抵抗力。

著录项

  • 来源
  • 作者

    Anna Fricke; Mirta Teichberg; Maggy M. Nugues; Svenja Beilfuss; Kai Bischof;

  • 作者单位

    University of Bremen, Department of Marine Botany, Leobener Str. NW2, 28359 Bremen, Germany,Leibniz Center for Tropical Marine Ecology (ZMT), Fahrenheitstrasse 6,28359 Bremen, Germany,EA4228 ECOMERS, Universite de Nice-Sophia Antipolis (UNS), Faculte des Sciences, Parc Valrose, 06108 Nice cedex 2, France;

    Leibniz Center for Tropical Marine Ecology (ZMT), Fahrenheitstrasse 6,28359 Bremen, Germany;

    CRIOBE-USR 3278, CNRS-EPHE-UPVD, 58 avenue Paul Alduy, 66860 Perpignan Cedex, France,Laboratoire d'Excellence 'CORAIL', France,CARMABI Foundation, Piscaderabaai z, P.O. Box 2090, Willemstad, Curacao, Netherlands Antilles;

    University of Bremen, Department of Marine Botany, Leobener Str. NW2, 28359 Bremen, Germany;

    University of Bremen, Department of Marine Botany, Leobener Str. NW2, 28359 Bremen, Germany;

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

    Curacao; Coral reef; Macroalgae; Cyanobacteria; Transplantation; UV radiation;

    机译：库拉索;珊瑚礁;大型藻类;蓝细菌;移植;紫外线辐射;

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