The application of δ13C and C/N ratios as indicators of organic carbon sources and paleoenvironmental change of the mangrove ecosystem from Ba Lat Estuary, Red River, Vietnam

Tuệ, Nguyễn Tài; Hamaoka, Hideki; Sogabe, Atsushi; Quy, Trần Đăng; Nhuận, Mai Trọng; Omori, Koji

doi:10.1007/s12665-011-0970-7

Cited by 61 publications

(37 citation statements)

References 42 publications

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“…6) indicates that these parameters are all responding to the same forcing factor(s). A similar pattern was found in the Ba Lat Estuary, also in Viet Nam, where TOC and d 13 C showed opposite patterns (Tue et al, 2011b). In Ba Lat, however, C/N and d 13 C covaried, while their relationship is more unclear at the head of the NP-BC estuary.…”

supporting

confidence: 76%

Temporal changes in physical, chemical and biological sediment parameters in a tropical estuary after mangrove deforestation

Ellegaard

Nguyen

Andersen

et al. 2014

Estuarine, Coastal and Shelf Science

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a b s t r a c tDated sediment cores taken near the head and mouth of a tropical estuary, Nha-Phu/Binh Cang, in south central Viet Nam were analyzed for changes over time in physical, chemical and biological proxies potentially influenced by removal of the mangrove forest lining the estuary. A time-series of satellite images was obtained, which showed that the depletion of the mangrove forest at the head of the estuary was relatively recent. Most of the area was converted into aquaculture ponds, mainly in the late 1990's. The sediment record showed a clear increase in sedimentation rate at the head of the estuary at the time of mangrove deforestation and a change in diatom assemblages in the core from the mouth of the estuary indicating an increase in the water column turbidity of the entire estuary at the time of the mangrove deforestation. The proportion of fine-grained sediment and the d 13 C signal both increased with distance from the head of the estuary while the carbon content decreased. The nitrogen content and the d 15 N signal were more or less constant throughout the estuary. The proportion of fine-grained material and the chemical proxies were more or less stable over time in the core from the mouth while they varied synchronously over time in the core from the head of the estuary. The sediment proxies combined show that mangrove deforestation had large effects on the estuary with regard to both the physical and chemical environment with implications for the biological functioning.

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supporting

confidence: 76%

Temporal changes in physical, chemical and biological sediment parameters in a tropical estuary after mangrove deforestation

Ellegaard

Nguyen

Andersen

et al. 2014

Estuarine, Coastal and Shelf Science

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“…In order to estimate the carbon content of the different organs (root, stem and leaves) obtained from shrub species, we followed the methodologies outlined by Tue et al (2011). Samples of different organs from each species were analysed through the dry combustion procedure at 1050°C using an element analyser (LECO HCN 600, St. Joseph, MI, USA).…”

Section: Plant's Organic Carbon Contentmentioning

confidence: 99%

Capability investigation of carbon sequestration in Artemisia aucheri Bioss

Sadeghi

Raeini

2015

Int. J. Environ. Sci. Technol.

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Artemisia spp. is widespread Iranian rangelands, covering more than 50 % of land cover. The present study was conducted to estimate the amount of carbon sequestration in soil containing Artemisia aucheri at different soil depths (0-15 and 15-30 cm), as well as its organs (root, shoot and leaves) and some soil chemical and physical characteristics in the SalehAbad region, 41 km north of HajiAbad, Hormozgan, Iran. The results showed that soil with 0-15 cm depth had higher soil pH and moisture percentage, as well as lower nitrogen percentage and organic carbon percentage than soil at deeper depths. Soil samples from 0 to 15 cm depth had higher clay percentage. Multiple regression showed that nitrogen percentage and moisture percentage were the most effective traits contributing to carbon sequestration. Root and leaf plant tissues had higher and lower stored organic carbon, respectively. Overall, the results of this study indicated that the highest carbon sequestration was obtained at a soil depth of 0-15 cm and in the roots of A. aucheri in the SalehAbad region. Therefore, by recognizing the species that have more potential for carbon sequestration, as well as more resistance to environmental limits such as salinity and drought, and also to investigate the management factors affecting the sequestration process, regeneration and rehabilitation of rangeland can be followed in terms of carbon sequestration.

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“…They are very important coastal ecosystems with which to combat both global warming and sea-level change, as they have a large amount of organic material in their substrates and vegetation (Tue et al 2011;Wang et al 2014). A large amount of soil organic carbon (SOC) may be sequestered and then stored for a long time in the sediment of mangrove ecosystems (Kauffman et al 2011;Kauffman et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Distribution of dissolved organic carbon and KMnO4-oxidizable carbon along the low-to-high intertidal gradient in a mangrove forest

et al. 2015

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Purpose Research on soil organic carbon (SOC) fractions is needed in order to improve the understanding of natural processes that take place in mangroves. This study aimed to evaluate the variation of SOC fractions along a low-to-high intertidal gradient and also investigate the relationship of SOC and vegetation biomass in the mangroves of Yingluo Bay, South China. Materials and methods Soil samples were collected from mangrove quadrats in the different intertidal zones. Total SOC and SOC fractions (such as dissolved organic carbon (DOC) and KMnO 4 -oxidizable carbon (KMnO 4 -C)) were analyzed, and vegetation biomass was also quantified. Results and discussionThe results showed that both the concentrations and pools of the SOC fractions increased along the low-to-high intertidal gradient. The KMnO 4 -C density changed from 5.66 to 8.48 t/ha, while their DOC densities increased from 465.14 to 734.41 kg/ha. Along the low-tohigh intertidal gradient, vegetation biomass and some soil attributes (such as TN, SOC, and soil textural characteristics) showed similar change tendencies as the SOC fractions. Correlation and multiple stepwise regression analysis indicated that DOC was significantly controlled by SOC, while KMnO 4 -C was significantly regulated by both SOC and TN. Multiple stepwise regression of SOC, against the soil attributes and vegetation biomass, revealed that SOC was significantly affected by the salinity and vegetation biomass. In turn, SOC fractions would be indirectly affected by the salinity and vegetation biomass. Conclusions Distribution of SOC fractions showed clear spatial patterns along the low-to-high intertidal gradient. This result indicated that SOC fractions were controlled by the environmental gradients which are created by geomorphological processes.

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The application of δ13C and C/N ratios as indicators of organic carbon sources and paleoenvironmental change of the mangrove ecosystem from Ba Lat Estuary, Red River, Vietnam

Cited by 61 publications

References 42 publications

Temporal changes in physical, chemical and biological sediment parameters in a tropical estuary after mangrove deforestation

Temporal changes in physical, chemical and biological sediment parameters in a tropical estuary after mangrove deforestation

Capability investigation of carbon sequestration in Artemisia aucheri Bioss

Distribution of dissolved organic carbon and KMnO4-oxidizable carbon along the low-to-high intertidal gradient in a mangrove forest

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