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在珊瑚礁继承期间,消费者在空间和时间上的变化减少了珊瑚礁继承的变化.

Jamie M McDevitt-Irwin1, Douglas J McCauley2, Daniel R Brumbaugh3,4

  • 1Hopkins Marine Station, Stanford University, Pacific Grove, CA, USA. jamie.mcirwin@gmail.com.

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此摘要是机器生成的。

随着时间的推移,珊瑚礁上的大型鱼类被排除在外,导致了较少的多样性和更多的多样性社区. 这表明鱼类对于保持珊瑚礁的稳定性和对环境变化的弹性至关重要.

关键词:
贝塔多样性 贝塔多样性共同体的组成 共同体的组成社区发展 社区发展草食动物 草食动物捕食者 掠食者 掠食者

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科学领域:

  • 海洋生态海洋生态学
  • 珊瑚礁生态 珊瑚礁生态
  • 生态继承 生态继承

背景情况:

  • 消费者显著影响生态继承,社区组成的变化随着时间的推移.
  • 全球消费者数量不断减少,需要了解它们的生态作用,尤其是在受威胁的珊瑚礁生态系统中.
  • 珊瑚礁鱼在构建盆地继承过程中至关重要,因此它们的作用对珊瑚礁的健康至关重要.

研究的目的:

  • 调查消费者 (鱼类) 排斥如何影响珊瑚礁底层社区发展和继承.
  • 确定鱼类养对社区多样性,空间变化和时间周转的影响.
  • 评估鱼类在早期继承期间对珊瑚礁社区结构中的作用.

主要方法:

  • 部署180个配对的结算,其中有一半被关在子里,以排除大型鱼 (>15厘米),另一半没有被关在子里.
  • 在帕尔米拉环礁的一年和三年的瓦上监测盆地社区的发展.
  • 在子和非子治疗之间分析社区组成,α多样性和β多样性 (空间和时间).

主要成果:

  • 鱼类的排除导致了更低的α多样性和更高的空间β多样性 (不同的社区).
  • 排除鱼类导致时β多样性增加,表明顺序轨迹不太可预测.
  • 随着时间的推移,子和非子之间的差异逐渐减少,这表明鱼类的影响在早期继承中最为强烈.
  • 盆地鱼的养使社区的组成均化,有利于状珊瑚藻的统治地位.

结论:

  • 大型鱼类的丧失,可能是由于过度捕捞造成的,可能会导致更具空间和时间变化的盆地社区.
  • 社区变化的增加可能会对生态系统功能和珊瑚礁弹性产生负面影响.
  • 鱼类在维持珊瑚礁社区结构,多样性和可预测的继承途径方面发挥着至关重要的作用.