Fig. 2: The multifaceted impact of crab burrows on carbon cycling and compositions.
From: Widespread crab burrows enhance greenhouse gas emissions from coastal blue carbon ecosystems
GPP (Gross primary production), NPP (Net primary production), R (Respiration), LFOC (Light-fraction organic carbon), HFOC (Heavy-fraction organic carbon), HU (humin), HA (Humic acid), FA (Fulvic acid). The data in the parenthesis indicate the median fluxes (g m−2 yr−1) of different carbon transport pathways based on published literature (Supplementary Table 3). The red arrow shows the net increase of GHGs emission fluxes per unit area under the influence of crab burrows. The different colored boxes in the subplots indicate significant differences between crab burrows and sediment matrix (p < 0.05). The brown, blue, and red boxes indicate that the values in crab burrows were significantly larger (>), lower (<), and approximately equal (≈) than those in sediment matrix, respectively.
