Taxon‐specific primary production rates on coral reefs in the Florida Keys
Taxon‐specific primary production rates on coral reefs in the Florida Keys
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佛罗里达群岛珊瑚礁的分类单元特定初级生产率
DOI：
10.1002/lno.11627
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发表时间：
2021
影响因子：
4.5
通讯作者：
Hopkinson, Brian M.
中科院分区：
文献类型：
--
作者：
Owen, Daniel P.;Long, Matthew H.;Fitt, William K.;Hopkinson, Brian M.
众所周知，珊瑚礁具有极高的初级生产力。然而，常用的地球化学方法用于确定珊瑚礁代谢的总体速率，不能区分哪些生物负责初级生产。本文采用“自下而上”的方法，通过按环境中分类群的丰度放大分类群特定率，估计了包括硬珊瑚、八角珊瑚和藻类在内的各种初级生产者对珊瑚礁总初级生产的贡献。主要初级生产者的基于室内的生产率作为辐照度的函数，辐照度是光合作用的主要短期驱动因素。然后将这些速率与带注释的珊瑚礁剖面三维（3D）重建和简单的光场模型相结合，以估计随时间变化的珊瑚礁尺度总和净初级产量。在佛罗里达群岛的一个退化的珊瑚礁上，八爪珊瑚和藻类是主要的生产者，但在一个更完整的地点，一种硬壳珊瑚（Acropora palmata）是最重要的生产者。作为对该方法的验证，用“自下而上”方法估计的初级产量速率与现场涡动相关通量进行了比较。每日综合率一致在16%以内，尽管在“自下而上”的方法中，最大产量降低了约35%，这可能是由于在3D重建中八珊瑚和大型藻类的代表性不足。“自下而上”的方法所得到的结果与原始生产力和辐照度的原位测量结果基本一致，并具有提供分类群特异性和空间显性初级生产力的显著优势。
Coral reefs are known to have extremely high rates of primary production. However, common geochemical methods for determining bulk rates of reef metabolism cannot distinguish which organisms are responsible for primary production. Here we used a “bottom‐up” approach to estimate the contribution of diverse primary producers including hard corals, octocorals, and algae to gross primary production on coral reefs by scaling up taxon‐specific rates by the abundance of those taxa in the environment. Chamber‐based production rates of the dominant primary producers were obtained as a function of irradiance, the primary short‐term driver of photosynthesis. These rates were then combined with annotated three‐dimensional (3D) reconstructions of reef sections and a simple light field model to estimate reef‐scale gross and net primary production rates over time. At a degraded reef in the Florida Keys octocorals and algae were the main producers, but at a more intact site a scleractinian coral (Acropora palmata) was the most important producer. As a validation of the approach, rates of primary production estimated using the “bottom‐up” approach were compared with in situ eddy covariance fluxes. The daily integrated rates agreed within 16%, though maximal production was ~ 35% lower in the “bottom‐up” approach likely due to under‐representation of octocorals and macroalgae in the 3D reconstructions. The “bottom up” approach yielded results that were largely consistent with the in situ measurements of primary production and irradiance with the significant benefit of providing taxon‐specific and spatially‐explicit primary production rates.
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影响因子：
4.5
作者：
R. Zepp;G. Shank;E. Stabenau;Karen W. Patterson;M. Cyterski;W. Fisher;E. Bartels;S. Anderson
通讯作者：
R. Zepp;G. Shank;E. Stabenau;Karen W. Patterson;M. Cyterski;W. Fisher;E. Bartels;S. Anderson
关闭浅海沿海生态系统中的氧气质量平衡
影响因子：
4.5
作者：
Long, Matthew H.;Rheuban, Jennie E.;McCorkle, Daniel C.;Burdige, David J.;Zimmerman, Richard C.
通讯作者：
Zimmerman, Richard C.
佛罗里达珊瑚礁食草和营养对大型藻类补充和演替影响的季节性调节
影响因子：
2.7
作者：
A. Duran;L. Collado;D. Burkepile
通讯作者：
D. Burkepile
通过涡流相关测量沿着大叶藻（Zostera marina）定植梯度的生态系统代谢
DOI：
--
发表时间：
2014
期刊：
影响因子：
--
作者：
J. Rheuban;P. Berg;K. McGlathery
通讯作者：
K. McGlathery
影响因子：
--
作者：
Peter Moran
通讯作者：
Peter Moran