Two experiments were performed during the wet and dry seasons to quantify dissolved carbon dynamics and fluxes in the Shark River, a tidal estuary flowing through the largest contiguous mangrove forest in North America (Everglades National Park, Florida, USA). During these experiments, between 80% and 87% of the total dissolved carbon pool consisted of inorganic carbon (DIC). Carbon inputs from mangroves to the estuary were slightly higher during the wet season, whereas alkalinity inputs were comparable during the two experiments. Longitudinal dissolved carbon fluxes to the coastal ocean were slightly higher during the wet season (13.53 ± 0.76 × 10⁵ mol day⁻¹ during the wet and 11.70 ± 0.32 × 10⁵ mol day⁻¹ during the dry), whereas longitudinal alkalinity flux was comparable during both experiments (10.64 ± 0.74 in the wet vs. 9.88 ± 0.30 × 10⁵ mol day⁻¹ during the dry season). Overall, DIC production in surface water, porewater, and groundwater was dominated by oxic mineralization of mangrove‐derived organic matter and carbonate dissolution. Carbonate dissolution was the most important alkalinity production process in the system. The experiments show that regardless of the season and hydro‐climatic conditions, Shark River receives large inputs of dissolved carbon from the upstream marsh, mangroves, and carbonate dissolution, and that per area, it exports a greater amount of dissolved carbon than many other mangrove‐dominated estuaries in the world.

中文翻译：

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红树林为主的河口中溶解碳清单和通量的季节性变化

在湿季和干季期间进行了两个实验，以量化鲨鱼河中的溶解碳动态和通量，鲨鱼河是一个潮汐河口，流经北美最大的红树林（美国佛罗里达州大沼泽国家公园）。在这些实验中，总溶解碳库的80％至87％由无机碳（DIC）组成。在雨季，从红树林到河口的碳输入量略高，而在两个实验中，碱度输入是可比较的。在湿季，流入沿海海洋的纵向溶解碳通量稍高（湿季为13.53±0.76×10 ⁵  mol day ^-1，湿季为11.70±0.32×10 ⁵  mol day ^-1在两个实验中，纵向碱度通量是可比较的（潮湿季节为10.64±0.74，干燥季节为9.88±0.30×10 ⁵  mol day ^-1）。总体而言，地表水，孔隙水和地下水中DIC的生产主要是由红树林衍生的有机物的氧化矿化作用和碳酸盐的溶解作用。碳酸盐溶解是系统中最重要的碱度生产过程。实验表明，无论季节和水文气候条件如何，鲨鱼河都会从上游沼泽，红树林和碳酸盐溶质中吸收大量溶解碳，而在每个区域中，鲨鱼河的溶解碳排放量要比其他许多红树林都要大。世界上主要的河口。