Organic carbon decomposition in rhodolith bed sediment under future climate change projections using the teabag index

Organic carbon decomposition was measured in rhodolith beds using the Teabag Index (TBI; Keuskamp et al., (2013; https://doi.org/10.1016/j.ecolind.2022.109077). The data includes measurements relating to carbon decomposition including mass loss, organic carbon loss, decomposition rate (k) and stability factor (S). Oxygen (O2), dissolved inorganic carbon (DIC) and calcium carbonate (CaCO3) flux measurements were also obtained to measure sediment respiration and photosynthesis rates (using O2 and DIC fluxes) and calcification and dissolution rates (using CaCO3 fluxes). Measurements were obtained from in vitro incubations of rhodolith bed community samples (contained in Perspex cores). Samples were collected by hand using scuba from Loch Sween (Scotland; 56.031837, -5.601581; Water depth = 7m) and contained sediment (~8cm), macroalgae and calcifying fauna on the top of the sediment. Experiments were run in the summer and winter. […]

有机碳分解率之测量采用红茶袋指数法（TBI；Keuskamp等，2013年；https://doi.org/10.1016/j.ecolind.2022.109077），于珊瑚藻石层中进行。数据集涵盖了与碳分解相关的测量值，包括质量损失、有机碳损失、分解速率（k）以及稳定性系数（S）。此外，还获取了氧气（O2）、溶解无机碳（DIC）和碳酸钙（CaCO3）通量的测量数据，以测定沉积物的呼吸作用和光合作用速率（利用O2和DIC通量）以及碳酸钙的沉积和溶解速率（利用CaCO3通量）。测量数据来自体外培养的珊瑚藻石层群落样本（存于亚克力管中）。样本通过潜水员手工采集自苏格兰的洛奇斯温恩湖（56.031837, -5.601581；水深=7m），包含约8厘米厚的沉积物、表层的大型藻类和钙化生物。实验在夏季和冬季进行。