在波多黎各La Parguera的一个合的红树林,海草和珊瑚礁生态系统中,局部沿海变暖,酸化和高颗粒有机物
Carla L Mejias-Rivera1, Roy A Armstrong1, Sawyer Balint2
1Department of Marine Sciences, University of Puerto Rico Mayagüez, Mayagüez, PR, USA.
概括
靠近海岸的红树林和海草生态系统提供了富含营养的水,可以增强珊瑚对海洋变暖和酸化的抵御力,尽管它们本身更温暖,更酸.
科学领域:
- 海洋生态海洋生态学
- 生物地质化学生物地质化学
- 沿海生态系统的动态
背景情况:
- 全球红树林,海草和珊瑚的减少威胁到沿海生态系统服务.
- 这些相结合的近海热带生态系统之间的功能联系尚不清楚.
研究的目的:
- 研究近岸生态系统 (红树林,海草) 和珊瑚礁之间的生物地化学联系.
- 了解近岸条件如何影响珊瑚对环境变化的弹性.
主要方法:
- 每月取海水温度,盐度,pH值,有机碳颗粒和的样本.
- 稳定同位素分析 (δ13C和δ15N) 用于确定有机物质来源.
- 在波多黎各La Parguera自然保护区内沿海至近海梯度的空间和时间分析.
主要成果:
- 岸内水域总是更温暖,更酸性,更丰富的有机颗粒物.
- 离岸站附近的有机颗粒物度明显更高.
- 生物地质化学变异性主要是由空间梯度驱动的,近岸站显示了最多的修改.
- 有机物质的同位素表明了海洋原生和原生来源的混合.
结论:
- 靠近海岸的红树林和海草生态系统创造了局部化的,营养丰富的,更温暖的,更酸的水.
- 这些条件代表了与近岸珊瑚的功能联系.
- 这种联系有可能调节珊瑚对海洋变暖和酸化的弹性.
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