Abstract
Behind their role as carbon sinks, mangrove soil can also emit greenhouse gases (GHG) through microbial metabolism. GHG flux measurments of mangroves are scarce in many locations, including Indonesia, which has one of the world’s most extensive and carbon-rich mangrove forests. We measured GHG fluxes (CO2, CH4, and N2O) during the wet season in Benoa Bay, Bali, a bay with considerable anthropogenic pressures. The mangroves of this Bay are dominated by Rhizophora and Sonneratia spp and have a characteristic zonation pattern. We used closed chambers to measure GHG at the three mangrove zones within three sites. Emissions ranged from 1563.5 to 2644.7 µmol m−2 h−1 for CO2, 10.0 to 34.7 µmol m−2 h−1 for CH4, and 0.6 to 1.4 µmol m−2 h−1 for N2O. All GHG fluxes were not significantly different across zones. However, most of the GHG fluxes decreased landward to seaward. Higher soil organic carbon was associated with larger CO2 and CH4 emissions, while lower redox potential and porewater salinity were associated with larger CH4 emissions. These data suggest that soil characteristics, which are partially determined by location in the intertidal, significantly influence GHG emissions in soils of these mangroves.
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1 Introduction
The world is facing climate change, causing irregular weather patterns in the past decades. Global climate change is caused by an increase in atmospheric greenhouse gas (GHG) concentrations, including carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) (Montzka et al., 2011; Kweku et al., 2018). The CO2 concentration in the atmosphere has increased to 409.9 ppm since the pre-industrial times (IPCC, 2021), while CH4 and N2O have increased by 5–10 and 1 ppb per year, respectively (Reay et al., 2018). Even though CH4 and N2O are emitted at lower concentrations, they have an average of a hundred-year global warming effect (100 GWP) of 29.8 and 273 times that of CO2, respectively (IPCC, 2021).
Mangroves are important sites for carbon accumulation, although their carbon-rich soils can also be sources of GHGs (Alongi, 2014; Chen et al., 2016). Mangrove vegetation fixes CO2 and stores carbon as aboveground biomass and roots (Bouillon et al., 2008; Murdiyarso et al., 2015), while some of the fixed carbon is exported as litter to adjacent coastal ecosystems (Adame & Lovelock, 2011). The rest is either decomposed by microorganisms or consumed by animals (Bardgett et al., 2008; Shiau & Chiu, 2020). The decomposition of organic carbon causes CO2 production in the soil oxic layers and CH4 production in the anoxic layers (Wang et al., 2009; Treat et al., 2015). Additionally, N2O is emitted through the nitrogenous pathway involving soil nitrification in the presence of O2 or denitrification in anoxic conditions, where soil carbon is high and oxygen is low (Zhu et al., 2013; Queiroz et al., 2019).
The GHG emissions in mangrove soils have been associated with environmental factors, including organic carbon, salinity, nutrients, and redox potential (Chen et al., 2010, 2014; Welti et al., 2017). GHG emissions increase with nutrient inputs and soil organic carbon (Chen et al., 2010, 2014) and decrease with salinity (Chen et al., 2010). For instance, CH4 is more likely to be produced under low-salinity conditions due to reduced competition with sulfate- and nitrate-reducing bacteria, which are more energy efficient than methanogenic bacteria (Purvaja & Ramesh, 2001; Biswas et al., 2007).
Mangroves exhibit zoning patterns across the intertidal area with characteristic redox and salinity gradients (Naidoo, 2016; Srikanth et al., 2016), which are likely to influence GHG emissions (Ulumuddin, 2019). Mangrove species with solid root structures, such as Sonneratia and Rhizophora, tend to dominate in the seaward or fringing forest (Tomlinson, 2016), where flooding is frequent, salinity is more less constant, and nutrient inputs are high (Ulumuddin, 2019). Variability across the intertidal zone also drives soil microorganism occurrence and metabolism, both of which are closely associated with GHG production (Chen et al., 2014). Other factors are also likely to affect mangrove characteristics and biogeochemical processes, such as climate and geomorphology (Lugo & Snedakers, 1974; Shih & Cheng, 2022), but at the local scale, mangrove zonation is likely to be one of the most important factors.
Measurements on GHG emissions in mangrove soils in many countries have been limited (Sasmito et al., 2019), including in Indonesia (Chen et al., 2014; Cameron et al., 2019; Sidik et al., 2019). Indonesia has one of the largest mangrove areas in the world, accounting for 19.5% of the total (Bunting et al., 2018). Indonesia has also one of the highest rates of mangrove loss (Richards & Friess, 2016), which are causing substantial GHG emissions (Maiti & Chowdhury, 2013). Thus, Indonesia has a high potential to reduce its emissions by reducing deforestation and supporting mangrove restoration (Buelow et al., 2022). However, to accurately estimate the carbon gains from mangrove protection and restoration, the baseline GHG emissions need to be excluded from their carbon mitigation potential (Rosentreter et al., 2021).
Indonesia is a tropical archipelagic country which a large variety of mangrove ecosystems, which are globally significant for its blue carbon and multiple co-benefits (Murdiyarso et al., 2015). Indonesia’s estuaries have significant freshwater inputs forming characteristic salinity gradients, which drive different types of mangrove species composition and structure, thus likely highly variable GHG emissions. One mangrove ecosystem experiencing high anthropogenic pressure is Benoa Bay in Bali. The Bay suffers from nutrient pollution (Raharja et al., 2018; Rahayu et al., 2018) and massive sedimentation caused by land reclamation, which has already caused the deterioration of the mangroves. Thus, this site is urgently needed for management and restoration activities, potentially through Blue Carbon projects.
The objectives of this study were as follows: first, to estimate the GHG fluxes (CO2, CH4, and N2O) in the mangroves of Benoa Bay along the intertidal zone (seaward, middle, and landward) and, second, to assess the relationship between GHG fluxes, forest structure, and environmental parameters (salinity, oxidation reduction potential, soil organic carbon). The wet or rainy season was chosen as the sampling time due to the maximum potential for soil GHG fluxes in tropical mangrove forests to occur (Kristensen et al., 2008; Tang et al., 2018; Otero et al., 2020; Kitpakornsanti et al., 2022). The main goal was to provide baseline data from these human-impacted mangroves in Indonesia. The result from this study will support the Indonesian government program FoLU (Forestry and Other Land Use) Net Sink 2030 by providing GHG fluxes data from the forestry sector. This information can be useful to accurately assess the carbon sequestration capacity and potential for reduced emissions of mangroves they are appropriately managed. We hypothesized that GHG fluxes during wet season will differ among mangrove community zones due to differences in vegetation structure and environmental conditions along the intertidal zone.
2 Methods
2.1 Site description
Benoa Bay, Bali (8°43′ to 8°42′S, 115°11′ to115°14′W; Fig. 1), has a large area of mangrove forest with 1132 ha. The mangroves have distinct zonation patterns, starting from the sea zone (seaward), which is dominated by Sonneratia alba, continuing to the middle zone, which is dominated by Rhizophora spp. and the landward zone, which has mixed mangrove species (Andiani et al., 2021; Sugiana et al., 2022). Seaward and middle zones are frequently flooded during high tides, while the landward zone is only inundated during large spring tides (Fig. 1). The soil texture ranges from fine sand to gravel but is dominated by coarse sand (Imamsyah et al., 2020; Prinasti et al., 2020). The porewater salinity of these mangroves generally increases, while the redox decreases, from the land to the seaward edge (Sugiana et al., 2021).
We sampled nine plots within three forests close to three villages: Sanur, Serangan, and Pemogan, during the wet season at low tide of the new moon period (3–9 December 2021) at daylight (1 pm–3 pm; UTC + 8). During sampling, temperatures ranged from 23.2 to 34.6 °C (average: 30.1 °C), humidity levels ranged from 58.0 to 98.0% (average: 76.4%), and monthly rainfall was 549.0 mm (Denpasar Central Statistics Agency, 2022).
2.2 Greenhouse gas flux measurement
We used the closed chamber method adopted from Chen et al. (2016). At each plot, three 20 × 20 × 25 cm squared dark chambers were installed at 2 cm deep in the soil. Gas samples were collected using 10-mL syringes plot for 30 min at 10-min intervals (0, 10, 20, 30 min for total 108 samples). We only took the gas once on each plot due to access difficulties and the limitation of low tide time, which only lasted for 2 h, especially on the seaward edge. The GHG concentrations were analyzed with gas chromatography (450-GC Varian) equipped with a flame ionization detector (FID), a thermal conductivity detector (TCD), and a 63Ni electron capture detector (μECD) for CH4, CO2, and N2O consecutively. The 450-GC also has a PAL autosampler injector, which functions for auto-injection and uses Ar, H2, He, N2, and compressed air as carrier gas. The measurement process began at under 25 °C at room temperature. A standard curve was used as a reference in the analysis. The concentration of GHG was calculated by comparing the peak area of the sample with the standard curve. The relationships between deployment time and GHG concentrations were significant (R2 of 0.83–0.98, 0.76–0.94, and 0.79–0.94 for CO2, CH4, and N2O, respectively, Fig. 2), thus confirming that the mangrove sediment continuously resealed gases that were accumulated in the chambers during sampling. The GHG fluxes were calculated as in Chen et al. (2016):
where
Fm: GHG fluxes (µmol m−2 h−1)
ΔM: The slope of the linear regression line between GHG concentrations (ppm) and sampling frequency (10 min transformed to an hour)
V: Chamber volume (L)
A: Chamber area (m2)
P: Constant gas volume (m3 mol−1)
Based on the average gas fluxes of the three mangrove zones, the CH4 and N2O fluxes were converted to CO2-equivalent fluxes to indicate the gas warming effect (IPCC, 2021). The CO2-equivalent flux was calculated using the following formula:
where
Fe: CO2-equivalent flux (g CO2 m−2 h−1),
Fm: Interfacial gas flux (mol m−2 h−1)
M: Molecular weight of the GHG
GMP: Warming effect or the conversion of CH4 and N2O emissions to CO2 equivalents as 29.8 and 273, respectively, over a 100-year timeframe (IPCC, 2021).
2.3 Soil and porewater physicochemical characteristics
Temperature, pH, salinity, and oxidation reduction potential (ORP) in the water and sediment were measured during sampling with a pH meter EZODOPH5011, SCT meter YSI EC200, and multimeter COM-600 water quality tester. Soil samples were collected from each plot at a depth of 5 cm using a 10-cm-diameter core pipe, from which water content and soil organic carbon (SOC) were measured. Samples were dried at 70 °C until constant weight and reweighed to measure water content. For SOC, the soil was filtered through a 2-mm mesh and burned at 550° (Chen et al., 2014). Soil type was identified with the megascopic method and the Wentworth diagram (1922).
2.4 Forest structure
Forest structure was measured following the guidelines from COREMAP-CTI LIPI (Dharmawan et al., 2020). At each site, we measured tree and sapling density, canopy coverage, and diameter at breast height (DBH) within a 10 × 10 m plot. Each plant was classified either as a tree (DBH ≥ 5 cm) or a sapling (DBH < 5 cm), and its species was identified based on Giesen et al. (2007) and Tomlinson (2016). Density, dominance, and species were used to estimate the importance value index (IVI). Field data collection was run in the MonMang 2.0 application, similar to Sugiana et al. (2022).
Hemispherical photography was used to estimate mangrove canopy coverage in each zone (Jennings et al., 1999; Ishida, 2004). Squared output hemisphere photographs were captured from scattered positions on each plot using a smartphone with 16-MP resolution. Each photograph was analyzed using ImageJ software to count the number of pixels. Canopy coverage percentage was calculated by comparing the number of pixels with vegetation to the total number of pixels on each photograph. The mangrove health index (MHI) was calculated by combining data on canopy cover, density, and DBH (Dharmawan & Ulumuddin, 2021), and below-ground carbon (BGC) is also measured by converting DBH of each mangrove stands using allometric equation based on Kauffman and Donato (2012).
2.5 Statistical analyses
All univariate data were analyzed with the Shapiro-Wilk normality test. Environmental parameters were normally distributed (p > 0.05) and were compared against zones with an analysis of variance (ANOVA) and Tukey HSD test for each mangrove zone. The GHG flux data were not normally distributed (p < 0.05), hence were analyzed with the nonparametric Kruskal-Wallis and Spearman rank. The GHG emissions were compared among zones and against environmental parameters (forest structure, soil, and porewater properties). All the tests used a statistical level of p < 0.05 and were run with the R software version 4.0.2.
3 Results
3.1 Forest structure
Species composition was different among mangrove zones, with the landward zone being the most diverse, with six mangrove spp. dominated by Sonneratia alba (IVI = 107.1%). The middle zone had two mangrove species dominated by Rhizophora apiculata (IVI = 175.1%, Table 1), and the seaward zone was solely composed of S. alba (IVI = 300.0%). A significantly higher density of mangrove trees and saplings was found in the middle zone with 3900 ± 1654 tree ha−1 (ANOVA: F3.6 = 4.67, p < 0.05) and 1400 ± 1015 tree ha−1 (ANOVA: F3.6 = 5.52, p < 0.05), respectively, compared to the land and seaward zone. The seaward zone had higher DBH (13.6 ± 1.7 cm) and lower canopy cover (40.8 ± 14.3%) compared to the land and middle zones 7.9 ± 3.1 cm and 7.8 ± 0.9 cm (ANOVA: F3.6 = 22.38, p < 0.05) and 72.9 ± 5.7% and 78.7 ± 1.1%, respectively (ANOVA: F3.6 = 47.30, p < 0.05), respectively. Even though the seaward zone had the largest DBH, it had the lowest MHI values with 41.0 ± 3.0% compared to land and middle zones with 51.2 ± 5.7% and 58.0 ± 3.6% (ANOVA: F3.6 = 36.57, p < 0.05), respectively. The low MHI value in the seaward zone was caused by its low canopy cover and sapling density. Despite the significant difference among the MHI across zones (p < 0.05, Table 1), they were all in the same category, suggesting a “moderate” condition. Below-ground carbon (BGC) from mangrove roots was also significantly different between the middle zone and the other two zones (F3.6 = 40.19, p < 0.05), with the higest value found in middle zone at 229.5 ± 84.4 Mg ha−1.
3.2 Soil and porewater physicochemical characteristics
The mangrove soil was mainly mud, except for the seaward zone, which was composed of sand and mud (Table 2). Water content during sampling was significantly highest in the middle zone with 50.9 ± 7.5% (ANOVA: F3.6 = 29.83, p < 0.05), and SOC concentrations were similar among zones (F3.6 = 0.80, p > 0.05), with values ranging from 19.8 to 25.8 mg g−1. The temperature of the porewater was similar among zones, with a mean value of 30.4 °C (ANOVA: F3.6 = 0.38, p > 0.05). Water pH, salinity, and ORP were significantly different in the seaward compared to the rest of the zones with mean values of 7.0 ± 0.1 (ANOVA: F3.6 = 23.29, p < 0.05), 28.3 ± 1.3 ppt (ANOVA: F3.6 = 8.40, p < 0.05), and 21.1 ± 82.8 mV (ANOVA: F3.6 = 6.85, p < 0.05) as can be seen in Table 2.
3.3 Greenhouse gas fluxes
The CO2 emissions were similar among mangrove zones (K-Wallis: H3,6 = 0.03, p > 0.05), although with a trend of decreasing emissions from the land (2,644.7 ± 3,338.8; range of 314.8 to 8,952.8 μmol m−2 h−1) to the middle (1,646.6 ± 1,335.6; 266.1 to 4,175.4 μmol m−2 h−1) and the seaward zone (1,563.5 ± 1,302.4; 97.8 to 3,578.3 μmol m−2 h−1; Fig. 3A). Similarly, CH4 and N2O flux patterns tended to decrease from the land to the sea, although the differences were not significant (CH4 K-Wallis: H3.6 = 5.89, p > 0.05 and N2O K-Wallis H3.6 = 5.04, p > 0.05). The CH4 flux in the landward zone was 34.7 ± 34.1 (5.0 to 88.0) μmol m−2 h−1, the middle zone was 21.36 ± 15.72 (5.0 to 44.4) μmol m−2 h−1, while the seaward zone was 10.0 ± 11.7 (0.9 to 38.5) μmol m−2 h−1 (Fig. 3B). For N2O, the landward flux was 1.4 ± 0.8 (0.43 to 2.96) μmol m−2 h−1, followed by the middle zone with 1.0 ± 0.8 (0.35 to 3.60) μmol m−2 h−1, and, finally, the seaward zone with 0.6 ± 0.3 (0.2 to 1.5) μmol m−2 h−1 (Fig. 3C). The CO2-equivalent fluxes from CH4 and N2O showed a similar decreasing trend from the land to the sea with a total mean GWP of 19.2 mg CO2 m−2 h−1 (Table 3).
3.4 Correlation with environmental parameters
Soil parameters were positively correlated with CO2 and CH4, but not with N2O fluxes. Higher soil organic carbon was associated with larger CO2 (p = 1.9 × 10−2) and CH4 fluxes (p = 5 × 10−4), while lower ORP and low porewater salinity were associated with larger CH4 fluxes (p = 2.3 × 10−2 and 2.9 × 10−3, respectively). Forest structure parameters were not significantly correlated with GHG fluxes (Table 4).
4 Discussion
The GHG fluxes in mangroves from Benoa Bay, Indonesia, had a decreasing trend from the land to the seaward zone. The CO2 and CH4 fluxes were significantly higher where SOC was highest, and CH4 flux were significantly highest where salinity and ORP were lowest. These results complement current literature showing that soil physicochemical characteristics are important drivers of GHG emissions in mangroves (Chen et al., 2010). Our results also prove that in addition to sequestering carbon, pollution-impacted mangroves release GHG from sediments, which need to be accounted for when estimating their full carbon mitigation potential.
Other studies have shown significant changes in GHG fluxes across intertidal zones, some finding higher emissions in the seaward (Wang et al., 2009) and others in the landward zone (Hirota et al., 2007; Chen et al., 2010; Lin et al., 2020). Each mangrove zone has unique vegetation characteristics, resulting mainly from tidal inundation variations, which drive interstitial salinity and nutrient availability. Similarly, in Benoa Bay, mangrove structure is quite different among zones, including the density of trees and saplings, the size of tree trunks, and the canopy cover. Additionally, pH was also significantly different among zones. Despite showing different values among zones, none of these parameters was significantly associated with GHG fluxes, suggesting that the effect of forest structure and pH was a less strong predictor than SOC and salinity. However, SOC was also influenced by vegetation density, where the denser the vegetation, the higher the carbon stores in the soil. However, this statement should be further studied, considering its weak relationship, and only applied if the measured vegetation density comes from the same species (Dermawan et al., 2023). Each vegetation species has a different contribution to the burial rate of SOC (Weiss et al., 2016), so this needs to be considered since SOC was closely correlated to GHG fluxes.
In Benoa Bay, the heterogeneous structure of the mangrove forest has caused differences in stand structure, such as the seaward zone, which is dominated by Sonneratia alba, with lower stand density due to its allelopathic compounds (Li et al., 2015; Zhang et al., 2018), compared to the middle zone, which is dominated by Rhizophora apiculata. Apart from SOC burial contribution, variations in mangrove species also indicate differences in salinity. Sonneratia alba could tolerate high water salinity, which makes this species dominate the seaward zone with more frequent seawater input (Pillai & Harilal, 2016). In addition, due to the more frequent washing of seawater through tides, SOC concentrations in the seaward zone tend to be lower than in the other zones. Therefore, differences in the zoning pattern of mangrove forests also indirectly indicate variations in GHG fluxes.
The higher fluxes at higher SOC make sense, as a higher carbon source for soil microorganisms results in higher rates of anoxic and anaerobic respiration (Bouillon et al., 2008; Morell et al., 2011). Similar results were found in South China (Chen et al., 2010) and Jiulong River estuary, China (Chen et al., 2016), where a positive correlation between SOC with CO2 and CH4 fluxes was found. Organic carbon sources in sediments come from within or outside the mangrove ecosystem, such as anthropogenic carbon carried by rivers or tides (Ulumuddin, 2019). Decomposition and respiration of organic carbon in mangrove soils result in CO2 or CH4 fluxes; however, the proportion of these gases depends on environmental conditions within the mangrove soil.
The CH4 fluxes were significantly correlated with low porewater salinity and ORP. Most mangrove soils have soils low in oxygen (Lu et al., 1999; Arai et al., 2016). However, in highly impacted mangroves, where carbon pollution is significant, anoxic conditions favor the production of CH4 through methanogenesis (Maltby et al., 2016; Sánchez-Carrillo et al., 2021). CH4 emissions are low in sites with high inputs of marine water, which favors sulfate-reducing bacteria that outcompete methanogens (Ulumuddin, 2019). Although N2O emissions followed a similar trend as CO2 and CH4, these differences were insignificant. Nevertheless, the decreasing N2O land-seaward trend is expected, as denitrification a likely source of N2O) is higher where soil organic carbon is high and pH is neutral, which sometimes can occur in the seaward zone (Fernandes et al., 2010; Marton et al., 2012).
Compared to other studies, our results are within the range of other tropical and subtropical regions (Table 5). We acknowledge that our sampling was limited in time; however, the wet season in Benoa Bay is where precipitation and temperature are highest; thus, our data could be representative of the higher end of annual emissions. In addition, these results were also supported by some literature which finds that the wet season becomes the peak of GHG flux in tropical mangrove forests such as CO2, CH4, and N2O in Thailand (Kitpakornsanti et al., 2022); CO2 in Tanzania and Brazil (Kristensen et al., 2008; Castellón et al., 2021); CH4 in Malaysia, Brazil, and Myanmar (Tang et al., 2018; Dalmagro et al., 2019; Cameron et al., 2021); and N2O in Brazil (Otero et al., 2020). In subtropical regions, similar results were also found for CH4 (Philipp et al., 2017; Zhu et al., 2021). Therefore, if this holds true, CH4 and N2O GWP of mangroves in Benoa Bay is about 1.7 MgCO2 ha−1 year−1, which is lower than CO2 GWP on natural riverine mangroves in Perancak, Indonesia, with 12.2 MgCO2 ha−1 year−1 (Sidik et al., 2019) and of rehabilitated mangroves in Sulawesi, Indonesia, with overall GWP of 17 MgCO2 ha−1 year−1 (Cameron et al., 2019). However, the emission of mangrove soils is low compared to their potential for carbon sequestration, which is estimated at 52.9 MgCO2 ha−1 year−1 (LIPI, 2018). Thus, regardless of their soil emissions, even in pollution-impacted regions, mangroves still maintain a capacity to mitigate carbon emissions. This result is particularly important given the high national deforestation rate of mangrove forests in Indonesia, which reached 182,091 ha, contributing to 136.9 MgCO2 ha−1 year−1 (Arifanti et al., 2021). Thus, restoration of mangroves such as those in Benoa Bay could contribute to lowering emissions in Indonesia.
5 Conclusion
GHG emissions in mangroves in Bali slightly varied across mangrove zones, with a decreasing land-to-seaward trend. The main parameters that controlled the emissions were salinity and SOC. Despite the GHG emissions at their maximum value during wet season, mangroves in Benoa Bay are still likely to remove and store significant quantities of carbon. Our data contribute to accurately estimating the carbon mitigation of mangroves in Indonesia. The low GHG emissions in these mangroves support the idea that even disturbed mangroves have potential to act as a carbon sinks. Further monitoring throughout the year could improve our results and identify additional drivers of GHG emissions in Indonesian mangroves and better ways to manage and protect these valuable ecosystems.
Availability of data and materials
We are pleased to be able to share the results of the analysis we have. However, we cannot provide all the data due to its use for the ongoing study. The datasets can be accessed at https://docs.google.com/spreadsheets/d/1bf_RCrUTM9ZJsTTgDcT_0JhE100I-dKftFgZ34lYAtw/edit?usp=sharing.
References
Adame, M. F., & Lovelock, C. E. (2011). Carbon and nutrient exchange of mangrove forests with the coastal ocean. Hydrobiologia, 663, 23–50. https://doi.org/10.1007/s10750-010-0554-7
Allen, D. E., Dalal, R. C., Rennenberg, H., Meyer, R. L., Reeves, S., & Schmidt, S. (2007). Spatial and temporal variation of nitrous oxide and methane flux between subtropical mangrove sediments and the atmosphere. Soil Biology and Biochemistry, 39(2), 622–631. https://doi.org/10.1016/j.soilbio.2006.09.013
Alongi, D. M. (2014). Carbon cycling and storage in mangrove forests. Annual Review of Marine Science, 6, 195–219. https://doi.org/10.1146/annurev-marine-010213-135020
Andiani, A. A. E., Karang, I. W. G. A., Putra, I. N. G., & Dharmawan, I. W. E. (2021). Relationship among mangrove stand structure parameters in estimating the community scale of aboveground carbon stock. Journal of Marine Science and Technology, 13(3), 485–498. https://doi.org/10.29244/jitkt.v13i3.36363
Arai, H., Yoshioka, R., Hanazawa, S., Minh, V. Q., Tuan, V. Q., Tinh, T. K., Phu, T. Q., Jha, C. S., Rodda, S. R., Dadhwal, V. K., Mano, M., & Inubushi, K. (2016). Function of the methanogenic community in mangrove soils as influenced by the chemical properties of the hydrosphere. Soil Science and Plant Nutrition, 62(2), 150–163. https://doi.org/10.1080/00380768.2016.1165598
Arifanti, V. B., Novita, N., & Tosiani, A. (2021). Mangrove deforestation and CO2 emissions in Indonesia. IOP Conference Series: Earth and Environmental Science, 874(1), 012006. https://doi.org/10.1088/1755-1315/874/1/012006
Bardgett, R. D., Freeman, C., & Ostle, N. J. (2008). Microbial contributions to climate change through carbon cycle feedbacks. The ISME Journal, 2(8), 805–814. https://doi.org/10.1038/ismej.2008.58
Biswas, H., Mukhopadhyay, S. K., Sen, S., & Jana, T. K. (2007). Spatial and temporal patterns of methane dynamics in the tropical mangrove dominated estuary, NE coast of Bay of Bengal, India. Journal of Marine Systems, 68(1–2), 55–64. https://doi.org/10.1016/j.jmarsys.2006.11.001
Bouillon, S., Borges, A. V., Castañeda-Moya, E., Diele, K., Dittmar, T., Duke, N. C., Kristensen, E., Lee, S. Y., Marchand, C., Middelburg, J. J., Rivera-Monroy, V. H., Smith, T. J. S., III., & Twilley, R. R. (2008). Mangrove production and carbon sinks: A revision of global budget estimates. Global Biogeochemical Cycles, 22(2), 1–12. https://doi.org/10.1029/2007GB003052
Buelow, C. A., Connolly, R. M., Turschwell, M. P., Adame, M. F., Ahmadia, G. N., Andradi-Brown, D. A., Bunting, P., Canty, S. W. J., Dunic, J. C., Friess, D. A., Lee, S. Y., Lovelock, C. E., McClure, E. C., Pearson, R. M., Sievers, M., Sousa, A. I., Worthington, T. A., & Brown, C. J. (2022). Ambitious global targets for mangrove and seagrass recovery. Current Biology, 32(7), 1641–1649. https://doi.org/10.1016/j.cub.2022.02.013
Bunting, P., Rosenqvist, A., Lucas, R. M., Rebelo, L. M., Hilarides, L., Thomas, N., Hardy, A., Itoh, T., Shimada, M., & Finlayson, C. M. (2018). The global mangrove watch—A new 2010 global baseline of mangrove extent. Remote Sensing, 10(10), 1669. https://doi.org/10.3390/rs10101669
Cameron, C., Hutley, L. B., Friess, D. A., & Brown, B. (2019). High greenhouse gas emissions mitigation benefits from mangrove rehabilitation in Sulawesi, Indonesia. Ecosystem Services, 40, 101035. https://doi.org/10.1016/j.ecoser.2019.101035
Cameron, C., Hutley, L. B., Munksgaard, N. C., Phan, S., Aung, T., Thinn, T., Aye, W. M., & Lovelock, C. E. (2021). Impact of an extreme monsoon on CO2 and CH4 fluxes from mangrove soils of the Ayeyarwady Delta, Myanmar. Science of the Total Environment, 760, 143422. https://doi.org/10.1016/j.scitotenv.2020.143422
Castellón, S. E. M., Cattanio, J. H., & Berrêdo, J. F. (2021). Spatial and temporal variability of carbon dioxide and methane fluxes in an Amazonian estuary. International Journal of Hydrology, 5(6), 327–337. https://doi.org/10.15406/ijh.2021.05.00294
Chauhan, R., Datta, A., Ramanathan, A. L., & Adhya, T. K. (2015). Factors influencing spatio-temporal variation of methane and nitrous oxide emission from a tropical mangrove of eastern coast of India. Atmospheric Environment, 107, 95–106. https://doi.org/10.1016/j.atmosenv.2015.02.006
Chen, G. C., Tam, N. F. Y., & Ye, Y. (2010). Summer fluxes of atmospheric greenhouse gases N2O, CH4 and CO2 from mangrove soil in South China. Science of the Total Environment, 408(13), 2761–2767. https://doi.org/10.1016/j.scitotenv.2010.03.007
Chen, G. C., Tam, N. F., & Ye, Y. (2012). Spatial and seasonal variations of atmospheric N2O and CO2 fluxes from a subtropical mangrove swamp and their relationships with soil characteristics. Soil Biology and Biochemistry, 48, 175–181. https://doi.org/10.1016/j.soilbio.2012.01.029
Chen, G. C., Ulumuddin, Y. I., Pramudji, S., Chen, S. Y., Chen, B., Ye, Y., Ou, D. Y., Ma, Z. Y., Hao, H., & Wang, J. K. (2014). Rich soil carbon and nitrogen but low atmospheric greenhouse gas fluxes from North Sulawesi mangrove swamps in Indonesia. Science of the Total Environment, 487, 91–96. https://doi.org/10.1016/j.scitotenv.2014.03.140
Chen, G., Chen, B., Yu, D., Tam, N. F., Ye, Y., & Chen, S. (2016). Soil greenhouse gas emissions reduce the contribution of mangrove plants to the atmospheric cooling effect. Environmental Research Letters, 11(12), 124019. https://doi.org/10.1088/1748-9326/11/12/124019
Dalmagro, H. J., Zanella de Arruda, P. H., Vourlitis, G. L., Lathuillière, M. J., de S. Nogueira, J., Couto, E. G., & Johnson, M. S. (2019). Radiative forcing of methane fluxes offsets net carbon dioxide uptake for a tropical flooded forest. Global Change Biology, 25(6), 1967–1981. https://doi.org/10.1111/gcb.14615
Dharmawan, I.W.E., Suyarso, Ulumuddin Y.I., Prayudha B., & Pramudji. (2020). Manual for mangrove community structure monitoring and research in Indonesia. NAS Media Pustaka, Makassar. Retreived from: https://www.researchgate.net/publication/364326020
Denpasar Central Statistics Agency. (2022). Denpasar municipality in figures (pp. 243). BPS Kota Denpasar. https://denpasarkota.bps.go.id/publication/2022/02/25/68f4c38625094b798b0471a6/kota-denpasar-dalam-angka-2022.html
Dermawan, E. P., Siregar, Y. I., & Efriyeldi, E. (2023). Estimation of carbon reserves in sediments in the mangrove ecosystem of Bukit Batu Village, Bengkalis Regency, Riau. Asian Journal of Aquatic Sciences, 6(1), 93–101. https://garuda.kemdikbud.go.id/documents/detail/3418183.
Dharmawan, I. W. E., & Ulumuddin Y. I. (2021). Mangrove community structure data analysis, a guidebook for Mangrove Health Index (MHI) training (pp. 29). NAS Media Pustaka. https://www.researchgate.net/publication/352932003_Mangrove_Community_Structure_Data_Analysis_A_Guidebook_for_Mangrove_Health_Index_MHI_Training
Fernandes, S. O., Bharathi, P. L., Bonin, P. C., & Michotey, V. D. (2010). Denitrification: An important pathway for nitrous oxide production in tropical mangrove sediments (Goa, India). Journal of Environmental Quality, 39(4), 1507–1516. https://doi.org/10.2134/jeq2009.0477
Giesen, W., Wulffraat, S., Zieren, M., & Scholten, L. (2007). Mangrove guidebook for Southeast Asia (pp. 769). FAO and Wetlands International. https://www.fao.org/3/ag132e/ag132e00.pdf
Hirota, M., Senga, Y., Seike, Y., Nohara, S., & Kunii, H. (2007). Fluxes of carbon dioxide, methane and nitrous oxide in two contrastive fringing zones of coastal lagoon, Lake Nakaumi, Japan. Chemosphere, 68(3), 597–603. https://doi.org/10.1016/j.chemosphere.2007.01.002
Imamsyah, A., Bengen, D. G., & Ismet, M. S. (2020). Structure and distribution of mangrove vegetation based on the quality of the biophysical environment in the Ngurah Rai Grand Forest Park, Bali [Indonesian]. Ecotrophic, 14(1), 88–99. https://doi.org/10.24843/EJES.2020.v14.i01.p08
IPCC. (2021). Climate change 2021: The physical science basis (p. 2391). Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change [Masson-Delmotte, V., P. Zhai, A. Pirani, S.L. Connors, C. Péan, S. Berger, N. Caud, Y. Chen, L. Goldfarb, M.I. Gomis, M. Huang, K. Leitzell, E. Lonnoy, J.B.R. Matthews, T.K. Maycock, T. Waterfield, O. Yelekçi, R. Yu, and B. Zhou (eds.)]. Cambridge University Press. https://doi.org/10.1017/9781009157896
Ishida, M. (2004). Automatic thresholding for digital hemispherical photography. Canadian Journal of Forest Research, 34(11), 2208–2216. https://doi.org/10.1139/X04-103
Jennings, S. B., Brown, N. D., & Sheil, D. (1999). Assessing forest canopies and understorey illumination: Canopy closure, canopy cover and other measures. Forestry: An International Journal of Forest Research, 72(1), 59–74. https://doi.org/10.1093/forestry/72.1.59
Kauffman, J.B., & Donato, D. C. (2012). Protocols for the measurement, monitoring and reporting of structure, biomass and carbon stocks in mangrove forests (Vol. 86). Cifor. Retreived from https://www.cifor.org/publications/pdf_files/WPapers/WP86CIFOR.pdf
Kitpakornsanti, K., Pengthamkeerati, P., Limsakul, A., Worachananant, P., & Diloksumpun, S. (2022). Greenhouse gas emissions from soil and water surface in different mangrove establishments and management in Ranong Biosphere Reserve, Thailand. Regional Studies in Marine Science, 56, 102690. https://doi.org/10.1016/j.rsma.2022.102690
Kristensen, E., Flindt, M. R., Ulomi, S., Borges, A. V., Abril, G., & Bouillon, S. (2008). Emission of CO2 and CH4 to the atmosphere by sediments and open waters in two Tanzanian mangrove forests. Marine Ecology Progress Series, 370, 53–67. https://doi.org/10.3354/meps07642
Kweku, D. W., Bismark, O., Maxwell, A., Desmond, K. A., Danso, K. B., Oti-Mensah, E. A., Quachie, T., & Adormaa, B. B. (2018). Greenhouse effect: Greenhouse gases and their impact on global warming. Journal of Scientific Research and Reports, 17(6), 1–9. https://doi.org/10.9734/JSRR/2017/39630
Li, N., Chen, P., & Qin, C. (2015). Density, storage and distribution of carbon in mangrove ecosystem in Guangdong’s coastal areas. Asian Agricultural Research, 7(1812-2016–144390), 62–73. https://doi.org/10.22004/ag.econ.202107
Lin, C. W., Kao, Y. C., Chou, M. C., Wu, H. H., Ho, C. W., & Lin, H. J. (2020). Methane emissions from subtropical and tropical mangrove ecosystems in Taiwan. Forests, 11(4), 470. https://doi.org/10.3390/f11040470
LIPI. (2018). Potential reserves of carbon absorption in mangrove and seagrass ecosystems in Indonesia. Indonesian Institute of Sciences. Retrieved from http://oseanografi.lipi.go.id/haspen/01.%20Summary%20for%20policy%20maker-layout-20%20Juli-versi%20alfa%201.0%20release.pdf
Lugo, A. E., & Snedaker, S. C. (1974). The ecology of mangroves. Annual Review of Ecology and Systematics, 51(1), 39–64. http://www2.agroparistech.fr/geeft/Downloads/Training/TropEcol/Archives_2011/4.1a.pdf.
Lu, C.Y., Wong, Y.S., Tam, N.F., Ye, Y., & Lin, P. (1999). Methane flux and production from sediments of a mangrove wetland on Hainan Island, China. Mangroves and Salt Marshes, 3(1): 41–49. https://doi.org/10.1023/A:1009989026801
Maiti, S. K., & Chowdhury, A. (2013). Effects of anthropogenic pollution on mangrove biodiversity: A review. Journal of Environmental Protection, 4(12), 1428–1434. https://doi.org/10.4236/jep.2013.412163
Maltby, J., Sommer, S., Dale, A. W., & Treude, T. (2016). Microbial methanogenesis in the sulfate-reducing zone of surface sediments traversing the Peruvian margin. Biogeosciences, 13(1), 283–299. https://doi.org/10.5194/bg-13-283-2016
Marton, J. M., Herbert, E. R., & Craft, C. B. (2012). Effects of salinity on denitrification and greenhouse gas production from laboratory-incubated tidal forest soils. Wetlands, 32, 347–357. https://doi.org/10.1007/s13157-012-0270-3
Montzka, S. A., Dlugokencky, E. J., & Butler, J. H. (2011). Non-CO2 greenhouse gases and climate change. Nature, 476(7358), 43–50. https://doi.org/10.1038/nature10322
Morell, F. J., Cantero-Martínez, C., Lampurlanés, J., Plaza-Bonilla, D., & Álvaro-Fuentes, J. (2011). Soil carbon dioxide flux and organic carbon content: Effects of tillage and nitrogen fertilization. Soil Science Society of America Journal, 75(5), 1874–1884. https://doi.org/10.2136/sssaj2011.0030
Murdiyarso, D., Purbopuspito, J., Kauffman, J. B., Warren, M. W., Sasmito, S. D., Donato, D. C., Manuri, S., Krisnawati, H., Tiberima, S., & Kurnianto, S. (2015). The potential of Indonesian mangrove forests for global climate change mitigation. Nature Climate Change, 5(12), 1089–1092. https://doi.org/10.1038/nclimate2734
Naidoo, G. (2016). The mangroves of South Africa: An ecophysiological review. South African Journal of Botany, 107, 101–113. https://doi.org/10.1016/j.sajb.2016.04.014
Otero, X. L., Araújo, J. M., Jr., Barcellos, D., Queiroz, H. M., Romero, D. J., Nóbrega, G. N., Neto, M. S., & Ferreira, T. O. (2020). Crab bioturbation and seasonality control nitrous oxide emissions in semiarid mangrove forests (Ceará, Brazil). Applied Sciences, 10(7), 2215. https://doi.org/10.3390/app10072215
Philipp, K., Juang, J.-Y., Deventer, M. J., & Klemm, O. (2017). Methane emissions from a subtropical grass marshland, northern Taiwan. Wetlands, 37(6), 1145–1157. https://doi.org/10.1007/s13157-017-0947-8
Pillai, N. G., & Harilal, C. C. (2016). Surveillance of the tolerance limit of Sonnearia alba Sm. to certain hydrogeochemical parameters from heterogenous natural habitats of Kerala, South India. International Research Journal of Biological Sciences, 5(12), 28–37. https://www.researchgate.net/publication/311616208.
Prinasti, N. K. D., Dharma, I. G. B. S., & Suteja, Y. (2020). Community structure of mangrove vegetation based on substrate characteristics in Ngurah Rai Forest Park, Bali [Indonesian]. Journal of Marine and Aquatic Sciences, 6(1), 90–99. https://doi.org/10.24843/jmas.2020.v06.i01.p11
Purvaja, R., & Ramesh, R. (2001). Natural and anthropogenic methane emission from coastal wetlands of South India. Environmental Management, 27(4), 547–557. https://doi.org/10.1007/s002670010169
Queiroz, H. M., Artur, A. G., Taniguchi, C. A. K., da Silveira, M. R. S., do Nascimento, J. C., Nóbrega, G. N., Otero, X. L., & Ferreira, T. O. (2019). Hidden contribution of shrimp farming effluents to greenhouse gas emissions from mangrove soils. Estuarine, Coastal and Shelf Science, 221, 8–14. https://doi.org/10.1016/j.ecss.2019.03.011
Raharja, I. M. D., Hendrawana, I. G., & Suteja, Y. (2018). Modeling of nitrate distribution in the waters of Benoa Bay [Indonesian]. Journal of Marine Research and Technology, 1(1), 22–28. https://doi.org/10.24843/jmrt.2018.v01.i01.p05
Rahayu, N. W. S. T., Hendrawan, I. G., & Suteja, Y. (2018). Spatial and temporal distribution of nitrate and phosphate during the western monsoon on the surface of Benoa Bay, Bali [Indonesian]. Journal of Marine and Aquatic Sciences, 4(1), 1–13. https://doi.org/10.24843/jmas.2018.v4.i01.1-13
Reay, D. S., Smith, P., Christensen, T. R., James, R. H., & Clark, H. (2018). Methane and global environmental change. Annual Review of Environment and Resources, 43, 165–192. https://doi.org/10.1146/annurev-environ-102017-030154
Richards, D. R., & Friess, D. A. (2016). Rates and drivers of mangrove deforestation in Southeast Asia, 2000–2012. Proceedings of the National Academy of Sciences, 113(2), 344–349. https://doi.org/10.1073/pnas.1510272113
Rosentreter, J. A., Al-Haj, A. N., Fulweiler, R. W., & Williamson, P. (2021). Methane and nitrous oxide emissions complicate coastal blue carbon assessments. Global Biogeochemical Cycles, 35(2), e2020GB006858. https://doi.org/10.1029/2020GB006858
Sánchez-Carrillo, S., Garatuza-Payan, J., Sánchez-Andrés, R., Cervantes, F. J., Bartolomé, M. C., Merino-Ibarra, M., & Thalasso, F. (2021). Methane production and oxidation in mangrove soils assessed by stable isotope mass balances. Water, 13(13), 1867. https://doi.org/10.3390/w13131867
Sasmito, S. D., Taillardat, P., Clendenning, J. N., Cameron, C., Friess, D. A., Murdiyarso, D., & Hutley, L. B. (2019). Effect of land-use and land-cover change on mangrove blue carbon: A systematic review. Global Change Biology, 25(12), 4291–4302. https://doi.org/10.1111/gcb.14774
Shiau, Y. J., & Chiu, C. Y. (2020). Biogeochemical processes of C and N in the soil of mangrove forest ecosystems. Forests, 11(5), 492. https://doi.org/10.3390/f11050492
Shih, S. S., & Cheng, T. Y. (2022). Geomorphological dynamics of tidal channels and flats in mangrove swamps. Estuarine, Coastal and Shelf Science, 265, 107704. https://doi.org/10.1016/j.ecss.2021.107704
Sidik, F., Fernanda Adame, M., & Lovelock, C. E. (2019). Carbon sequestration and fluxes of restored mangroves in abandoned aquaculture ponds. Journal of the Indian Ocean Region, 15(2), 177–192. https://doi.org/10.1080/19480881.2019.1605659
Srikanth, S., Lum, S. K. Y., & Chen, Z. (2016). Mangrove root: Adaptations and ecological importance. Trees, 30, 451–465. https://doi.org/10.1007/s00468-015-1233-0
Sugiana, I. P., Faiqoh, E., Indrawan, G. S., & Dharmawan, I. W. E. (2021). Methane concentration on three mangrove zones in Ngurah Rai Forest Park, Bali [Indonesian]. Jurnal Ilmu Lingkungan, 19(2), 422–431. https://doi.org/10.14710/jil.19.2.422-431
Sugiana, I. P., Andiani, A. A. E., Dewi, I. G. A. I. P., Karang, I. W. G. A., As-Syakur, A. R., & Dharmawan, I. W. E. (2022). Spatial distribution of mangrove health index on three genera dominated zones in Benoa Bay, Bali, Indonesia. Biodiversitas Journal of Biological Diversity, 23(7). https://doi.org/10.13057/biodiv/d230713
Tang, A. C., Stoy, P. C., Hirata, R., Musin, K. K., Aeries, E. B., Wenceslaus, J., & Melling, L. (2018). Eddy covariance measurements of methane flux at a tropical peat forest in Sarawak, Malaysian Borneo. Geophysical Research Letters, 45(9), 4390–4399. https://doi.org/10.1029/2017GL076457
Tomlinson, P. (2016). The botany of mangroves (2nd ed., p. 418). Cambridge University Press. https://doi.org/10.1017/CBO9781139946575
Treat, C. C., Natali, S. M., Ernakovich, J., Iversen, C. M., Lupascu, M., McGuire, A. D., Norby, R. J., Chowdhury, R., Richter, A., Šantrůčková, H., & Waldrop, M. P. (2015). A pan-Arctic synthesis of CH4 and CO2 production from anoxic soil incubations. Global Change Biology, 21(7), 2787–2803. https://doi.org/10.1111/gcb.12875
Ulumuddin, Y. I. (2019). Methane: Greenhouse gas emissions from blue carbon ecosystems, mangroves [Indonesian]. Jurnal Ilmu Lingkungan, 17(2), 359–372. https://doi.org/10.14710/jil.17.2.359-372
Wang, D., Chen, Z., Sun, W., Hu, B., & Xu, S. (2009). Methane and nitrous oxide concentration and emission flux of Yangtze Delta plain river net. Science in China Series B: Chemistry, 52(5), 652–661. https://doi.org/10.1007/s11426-009-0024-0
Weiss, C., Weiss, J., Boy, J., Iskandar, I., Mikutta, R., & Guggenberger, G. (2016). Soil organic carbon stocks in estuarine and marine mangrove ecosystems are driven by nutrient colimitation of P and N. Ecology and Evolution, 6(14), 5043–5056. https://doi.org/10.1002/ece3.2258
Welti, N., Hayes, M., & Lockington, D. (2017). Seasonal nitrous oxide and methane emissions across a subtropical estuarine salinity gradient. Biogeochemistry, 132(1), 55–69. https://doi.org/10.1007/s10533-016-0287-4
Wentworth, C. K. (1922). A scale of grade and class terms for clastic sediments. The Journal of Geology, 30(5), 377–392. https://www.journals.uchicago.edu/doi/pdf/10.1086/622910.
Zhang, Y., Liang, F. P., Li, Y. Y. W., Zhang, J. W., Zhang, S. J., Bai, H., Liu, Q., Zhong, C. Y. R., & Li, L. (2018). Allelopathic effects of leachates from two alien mangrove species, Sonneratia apetala and Laguncularia racemosa on seed germination, seedling growth and antioxidative activity of a native mangrove species Sonneratia caseolaris. Allelopathy Journal, 44(1), 119–130. https://www.researchgate.net/publication/333262758.
Zhu, X., Burger, M., Doane, T. A., & Horwath, W. R. (2013). Ammonia oxidation pathways and nitrifier denitrification are significant sources of N2O and NO under low oxygen availability. Proceedings of the National Academy of Sciences, 110(16), 6328–6333. https://doi.org/10.1073/pnas.1219993110
Zhu, X., Sun, C., & Qin, Z. (2021). Drought-induced salinity enhancement weakens mangrove greenhouse gas cycling. Journal of Geophysical Research: Biogeosciences, 126(8), e2021JG006416. https://doi.org/10.1029/2021JG006416
Acknowledgements
The authors thank Dr. Bruce Campbell for his constructive criticism during the manuscript preparation and two anonymous reviewers who provided very useful input in improving the quality of this paper. We also thank our Udayana friends, N. P. P. Megasari, N. L. P. B. Witariani, G. A. I. Indrayanti, N. K. A. Safitri, I. M. Yunarta, and P. Kumayarasa for their help during field data collection. This research is a collaboration between Udayana University and the Indonesian National Research and Innovation Agency (BRIN) through BioVeLa (Marine Biovegetation) project.
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Conceptualization, IPS; methodology, EF, MFA, and GSI; formal analysis and investigation, AAEA, IGAIPD, and GSI; writing — original draft preparation, IPS, MFA, AAEA, and IGAIPD; writing — review and editing, IPS, MFA, and IWED; funding acquisition, IPS, EF, MFA, IWED; resources, IPS, AAEA, IGAIPD; and supervision, MFA and IWED.
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Sugiana, I.P., Faiqoh, E., Adame, M.F. et al. Soil greenhouse gas fluxes to the atmosphere during the wet season across mangrove zones in Benoa Bay, Indonesia. Asian J. Atmos. Environ 17, 13 (2023). https://doi.org/10.1007/s44273-023-00014-9
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DOI: https://doi.org/10.1007/s44273-023-00014-9