The fate of dissolved organic matter along the mangrove creek-to-estuary continuum

Wu, Shengjie; Hong, Hualong; Lu, Qian; Xiong, Jiangzhiqian; You, Yanli; Wu, Zhao-Yang; Liu, Juner; Liu, Jingchun; Yan, Chongling; Lu, Haoliang

doi:10.1016/j.ecss.2021.107496

Cited by 7 publications

(2 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The concentration of DOC in the deforested, planted and natural mangroves varied from 2.2 to 8.1; 2.3 to 10.8 and 1.8 to 13.2 mgCL −1 , respectively, during the sampling period (Table 2) was higher than observed by Wang et al [37] in the Gulf of Mexico (0.72-1.20 mgCL −1 ), similar to DOC values in the Florida Everglades mangrove (about 1.7 to 17.9 mgCL −1 ; [38]), but still within the lower value range in the southeast China mangrove (between 6.7 and 110.5 mgCL −1 ; [39]). The highest DOC concentration (13.2 mgCL −1 ) in natural mangroves reflects the fact that mangrove litter plays an important role in controlling DOC concentrations [40].…”

Section: Organic Carbon Concentrationssupporting

confidence: 71%

“…Mann and Wetzel [55] found in freshwater marshes an average value of about 45%, but higher than seawater (values of 20 to 35%, [56]). In our study, a rapid OM concentration decrease to biodegradation suggests in mangrove creeks most of the labile and easily degradable proteins are typical for OM materials [39] in the Xuan Thuy mangrove. The highest mean BTOC concentration in the planted mangrove (Table 2) could be due to mangrove litter having been found to leach a significant fraction of organic matter during the initial stages of degradation [18,57,58].…”

Section: Biodegradable Ocmentioning

confidence: 49%

See 1 more Smart Citation

Biodegradable and Seasonal Variation of Organic Carbon Affected by Anthropogenic Activity: A Case in Xuan Thuy Mangrove Forest, North Vietnam

Nguyen

Hoang

et al. 2022

Water

View full text Add to dashboard Cite

The samples were collected from different areas (from natural, planted, and deforested mangrove forests) to study the impact of anthropogenic activity on biodegradable and seasonal variation of organic carbon (OC) in Xuan Thuy mangrove forest, North Vietnam. We observed a positive relationship between TSS and both POC and DOC (r2 = 0.993; p < 0.0001 và r2 = 0.942; p < 0.0001, respectively), suggesting that erosion and resuspension increase OC delivery at the mangroves. Mean DOC and POC concentrations in the rainy season (4.8 ± 3.0 mgCL−1 and 6.9 ± 1.6 mgCL−1, respectively) were significantly higher than those in the dry season (3.1 ± 0.9 mgCL−1 and 2.9 ± 0.4 mgCL−1, respectively). The mean percentage of biodegradable for 40 days was about 47 ± 15% of BTOC, 45 ± 17% of BDOC, and 48 ± 18% of BPOC. The rainy season indicated that there was more biodegradable OM in the mangroves compared to the dry season. The molar ratio of OC and total nitrogen was from 0.4 to 25.9, showing a hybrid of terrestrial organic matter and aquatic. Lower C/N and great variation of POC/Chla in the deforested mangroves was due to augmented OM input from aquaculture activities in this area. The results of this study indicate that deforested mangrove and an increase in aquaculture activities will contribute to anthropogenic OM reaching the sea.

show abstract