结论


本研究中的 N2O 通量表明，潮间带沉积物表现出显着的 N2O 吸收，以响应养分可用性的潮汐脉冲变化。低潮使沉积物暴露在大气中时营养物质耗尽。N 转化细菌和古细菌必须与底栖微藻竞争这些有限的资源。在阳光充足的条件下，反硝化剂可能会被微藻竞争硝酸盐，但也可能使用 N2O 作为终端电子受体（Miller 等人，1986 年），从而驱动低潮时 N2O 吸收的信号。采取的措施来自营养富集核心的 N2Ofluxes 对 DIN 和 DINþDIP 添加最敏感，并且这些沉积物中通过反硝化作用吸收的 N2O 受到 P 限制。 N2O。总的来说，我们观察到这个潮滩生态系统在夏季是一个 N2O 汇，与相邻的盐沼处于同一数量级。 从大气中去除这种强效温室气体是发生在通常被认为是大气中 N2O 来源的生态系统中的一项关键生态系统服务。


致谢


我们非常感谢美国国家科学基金会，它通过资助 S.Fagherazzi、RWFulweiler 和 D.Fitzgerald（NSF OCE 0924287）以及 L.Deegan（NSF OCE 0923689）在生物地球化学的新兴主题中为该项目提供资金.我们还要感谢波士顿大学，它通过 Mary Erskine Type II 赠款为 RWFulweiler 提供了额外的资金。另外感谢 NSF 对梅岛河口长期生态研究 (LTER) 站点 (NSF OCE 0423565) 的支持，其中这项工作发生了，非常感谢使用 Plum Island LTER 站点的设施，这使这项工作成为可能。此外，我们感谢 Sarabeth Buckley、Taylor O'Leary、Katie Pritchard 和 Sarah Donovan forfield 和实验室协助。我们感谢Pam Templar 和 Sergio Fagherazzi 对早期版本手稿的有益评论。我们非常感谢 Unisense,DK 的 Anne Bolvig Sørensen 和 Lars Hauer Larsen 的帮助，他们提供微传感器支持和 Peter Ber g 用于 PROFILE 模型支持。


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潮汐脉冲对于温和潮间带泥滩中一氧化二氮通量改变的研究——摘要、介绍

潮汐脉冲对于温和潮间带泥滩中一氧化二氮通量改变的研究——方法、数据分析

潮汐脉冲对于温和潮间带泥滩中一氧化二氮通量改变的研究——结果

潮汐脉冲对于温和潮间带泥滩中一氧化二氮通量改变的研究——讨论

潮汐脉冲对于温和潮间带泥滩中一氧化二氮通量改变的研究——结论、致谢！