海草床储存的碳比红树林少，但支持的大型底栖动物比红树林多。
Seagrass beds store less carbon but support more macrobenthos than mangrove forests.
机构信息
Forestry College, Guangxi University, Nanning, 530004, Guangxi, China; Guangxi Key Lab of Mangrove Conservation and Utilization, Guangxi Mangrove Research Center, Guangxi Academy of Sciences, Beihai, 536000, Guangxi, China.
Guangxi Key Lab of Mangrove Conservation and Utilization, Guangxi Mangrove Research Center, Guangxi Academy of Sciences, Beihai, 536000, Guangxi, China.
出版信息
Mar Environ Res. 2020 Dec;162:105162. doi: 10.1016/j.marenvres.2020.105162. Epub 2020 Sep 28.
Seagrass beds (SG) have powerful ecosystem functions, but some seagrasses, e.g., Halophila beccarii, have been neglected because of their tiny plant structure and narrow and restricted distribution in the intertidal zone. In this study, we compared ecosystem structure and function between H. beccarii SG and adjacent coastal habitats through: (i) vegetation composition, (ii) carbon storage, and (iii) macrobenthic community. The vegetation carbon storage was only 0.1% of that in mangrove forests (MG). The sediment carbon storage (0-60 cm) of SG (67.4 ± 20.2 MgC·ha) was 74.31% of MG (90.7 ± 12.9 MgC·ha) and 13.51% higher than unvegetated flats (UnV) (55.1 ± 17.7 MgC·ha). The macrobenthic abundance, biomass and secondary productivity in SG were significantly higher than those in MG, indicating that SG support more macrobenthos than MG. However, SG experienced more disturbances than MG and UnV. Therefore, it is necessary to strengthen the protection of H. beccarii SG to preserve their essential functions and services.
海草床具有强大的生态系统功能，但由于其微小的植物结构和在潮间带狭窄和受限的分布，一些海草，如贝氏喜盐草，被忽视了。在这项研究中，我们通过以下方式比较了贝氏喜盐草海草床和相邻沿海生境的生态系统结构和功能：（i）植被组成，（ii）碳储存，和（iii）大型底栖动物群落。植被碳储存仅为红树林（MG）的 0.1%。海草床（0-60 厘米）的沉积物碳储存（SG）（67.4±20.2 MgC·ha）为 MG（90.7±12.9 MgC·ha）的 74.31%，比无植被滩涂（UnV）（55.1±17.7 MgC·ha）高 13.51%。海草床的大型底栖动物丰度、生物量和次级生产力明显高于 MG，表明海草床比 MG 支持更多的大型底栖动物。然而，SG 比 MG 和 UnV 经历更多的干扰。因此，有必要加强对贝氏喜盐草海草床的保护，以维持其重要的功能和服务。
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