pelagic sargassum 流入对 δ 的影响
Alberto Sánchez1, Paula Gonzalez-Jones1, Karla A Camacho-Cruz2
1Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, La Paz, Baja California Sur, Mexico.
Marine pollution bulletin
|June 3, 2023
概括
墨西哥加勒比海的海草 (Thalassia testudinum) 显示了耗尽的同位素,这表明海底石灰的分解是重要的源. 这一发现对于理解生态系统健康和管理至关重要.
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
- 生态系统管理 生态系统管理
背景情况:
- 墨西哥加勒比地区生态系统 (MCE) 需要监测可持续的资源供应.
- 废水是影响MCE的主要源,而海石灰分解是潜在的额外来源.
- 泰拉西亚测试是评估MCE中人类影响的关键指标物种.
研究的目的:
- 调查海类的对MCE的贡献.
- 分析从2009年到2019年的thalassia testudinum同位素 (δ15N) 的长期变化.
- 推断石灰尘分解作为替代源的作用.
主要方法:
- 在十年内 (2009-2019) 对Thalassia testudinum δ15N值的分析.
- 对不同时期的同位素数据进行比较,以确定趋势.
- 观察到的同位素转移与海底石灰存在和分解的相关性.
主要成果:
- 从2014年中期到2019年,与之前的时期相比,观察到T. testudinum δ15N值的显著耗尽.
- 这些同位素转移表明,T. testudinum可用的源发生了变化.
- 数据表明,海底石灰的浸出是观察到的气动态的一个因素.
结论:
- 在MCE中,海类石灰作为替代源.
- 石灰尘的分解显著影响循环和T. testudinum同位素特征.
- 了解这些投入对于墨西哥加勒比地区有效的保护和管理策略至关重要.
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