Are global mangrove carbon stocks driven by rainfall?

Sanders, Christian J.; Maher, Damien T.; Tait, Douglas R.; Williams, D. Dudley; Holloway, Ceylena; Sippo, James Z.; Santos, Isaac R.

doi:10.1002/2016jg003510

Cited by 172 publications

(119 citation statements)

References 49 publications

(94 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Further, our analysis gave an estimation of 1.32 Pg C for carbon stock in the above-and below-ground biomass of global mangrove forests. This carbon stock estimation is lower than those reported in the literature (1.82 Pg C reported by Alongi [3], and 1.568 Pg C from Sanders et al [11]). The mangrove extent information used in these three studies (including our study) is from the same work by Giri et al [12].…”

Section: Discussioncontrasting

confidence: 70%

“…The mangrove extent information used in these three studies (including our study) is from the same work by Giri et al [12]. Assuming 86% of soil carbon in the ecosystem-level carbon (see Sanders et al [11]), we obtain 9.4 Pg C of ecosystem-level carbon in global mangrove forest, lower than 13 Pg C by Alongi and 11.2 Pg C by Sanders et al; see [3,11]). …”

Section: Discussionmentioning

confidence: 76%

“…Sanders et al [15] did not directly report the mangrove area. However, the mangrove extent information used in Sanders et al [11] for the estimation of carbon stock is from Giri et al [12]. The mangrove area estimated from this study does not include mangroves with a canopy height value that is either zero or higher than the cut-off threshold (48 m here).…”

Section: Estimation Results Of Global Mangrove Area Biomass and Carbonmentioning

confidence: 99%

“…Carbon stock here only includes those from aboveground and belowground biomass (soil carbon was excluded). Hutchison et al [14] and Sanders et al [11] reported ecosystem-level carbon stock (including soil carbon). We extracted carbon stock for above-and below-ground biomass by applying a ratio of 0.14 (Sanders et al in 2016 suggested 86% of mangrove carbon is stored in soil [11]).…”

Section: Estimation Results Of Global Mangrove Area Biomass and Carbonmentioning

confidence: 99%

“…Hutchison et al [14] and Sanders et al [11] reported ecosystem-level carbon stock (including soil carbon). We extracted carbon stock for above-and below-ground biomass by applying a ratio of 0.14 (Sanders et al in 2016 suggested 86% of mangrove carbon is stored in soil [11]). Note: The mangrove area in Alongi [3] is based on Giri et al's work [12].…”

Section: Estimation Results Of Global Mangrove Area Biomass and Carbonmentioning

confidence: 99%

See 4 more Smart Citations

Big Geospatial Data Analytics for Global Mangrove Biomass and Carbon Estimation

et al. 2018

View full text Add to dashboard Cite

Abstract:The objective of this study is to estimate the biomass and carbon of global-level mangroves as a special type of wetland. Mangrove ecosystems play an important role in regulating carbon cycling, thus having a significant impact on global environmental change. Extensive studies have been conducted for the estimation of mangrove biomass and carbon stock. However, this estimation at a global level has been insufficiently investigated because the spatial scale of interest is large and most existing studies are based on physically challenging fieldwork surveys that are limited to local scales. Over the past few decades, high-resolution geospatial data related to mangroves have been increasingly collected and processed using remote sensing and Geographic Information Systems (GIS) technologies. While these geospatial data create potential for the estimation of mangrove biomass and carbon, the processing and analysis of these data represent a big data-driven challenge. In this study, we present a spatially explicit approach that integrates GIS-based geospatial analysis and high-performance parallel computing for the estimation of mangrove biomass and carbon at the global level. This integrated approach provides support for enabling and accelerating the global-level estimation of mangrove biomass and carbon from existing high-resolution geospatial data. With this integrated approach, the total area, biomass (including above-and below-ground), and associated carbon stock of global mangroves are estimated as 130,420 km 2 , 1.908 Pg, and 0.725 Pg C for the year of 2000. The averaged aboveground biomass density of global mangroves is estimated as 146.3 Mg ha −1 . Our analysis results demonstrate that this integrated geospatial analysis approach is efficacious for the computationally challenging estimation of global mangrove metrics based on high-resolution data. This global-level estimation and associated results are of great assistance for promoting our understanding of complex geospatial dynamics in mangrove forests.

show abstract

Section: Discussioncontrasting

confidence: 70%

Section: Discussionmentioning

confidence: 76%

Section: Estimation Results Of Global Mangrove Area Biomass and Carbonmentioning

confidence: 99%

Section: Estimation Results Of Global Mangrove Area Biomass and Carbonmentioning

confidence: 99%

Section: Estimation Results Of Global Mangrove Area Biomass and Carbonmentioning

confidence: 99%

See 3 more Smart Citations

Big Geospatial Data Analytics for Global Mangrove Biomass and Carbon Estimation

et al. 2018

View full text Add to dashboard Cite

show abstract

Blue carbon oxidation revealed by radiogenic and stable isotopes in a mangrove system

Maher

Santos

Schulz

et al. 2017

Geophysical Research Letters

Self Cite

View full text Add to dashboard Cite

Mangroves are among the most carbon‐rich ecosystems on Earth and can sequester carbon in sediments over long timescales. Here we assess whether century‐old buried carbon may be remineralized and exported by measuring Δ14C in the exported dissolved inorganic carbon (DIC) as well as sediment Δ14C profiles in a subtropical mangrove. Pore water exchange released isotopically depleted, old DIC to surface waters. Keeling plots revealed that the source of DIC to surface waters had a δ13C‐DIC value of −29.4 ±1.9‰ and Δ14C‐DIC value of −73±9‰. The respired and exported carbon comes from an average depth of ~40 cm, equivalent to ~100 years of sediment accumulation. Therefore, century‐old sequestered carbon is still susceptible to remineralization and tidal export to the coastal ocean via pore water exchange or submarine groundwater discharge. We suggest that the timescales over which blue carbon burial is assessed should consider carbon losses via pore water exchange.

show abstract

Methane Feedbacks to the Global Climate System in a Warmer World

Dean

Middelburg

Röckmann

et al. 2018

Reviews of Geophysics

431

341

View full text Add to dashboard Cite

Methane (CH4) is produced in many natural systems that are vulnerable to change under a warming climate, yet current CH4 budgets, as well as future shifts in CH4 emissions, have high uncertainties. Climate change has the potential to increase CH4 emissions from critical systems such as wetlands, marine and freshwater systems, permafrost, and methane hydrates, through shifts in temperature, hydrology, vegetation, landscape disturbance, and sea level rise. Increased CH4 emissions from these systems would in turn induce further climate change, resulting in a positive climate feedback. Here we synthesize biological, geochemical, and physically focused CH4 climate feedback literature, bringing together the key findings of these disciplines. We discuss environment‐specific feedback processes, including the microbial, physical, and geochemical interlinkages and the timescales on which they operate, and present the current state of knowledge of CH4 climate feedbacks in the immediate and distant future. The important linkages between microbial activity and climate warming are discussed with the aim to better constrain the sensitivity of the CH4 cycle to future climate predictions. We determine that wetlands will form the majority of the CH4 climate feedback up to 2100. Beyond this timescale, CH4 emissions from marine and freshwater systems and permafrost environments could become more important. Significant CH4 emissions to the atmosphere from the dissociation of methane hydrates are not expected in the near future. Our key findings highlight the importance of quantifying whether CH4 consumption can counterbalance CH4 production under future climate scenarios.

show abstract

Are global mangrove carbon stocks driven by rainfall?

Cited by 172 publications

References 49 publications

Big Geospatial Data Analytics for Global Mangrove Biomass and Carbon Estimation

Big Geospatial Data Analytics for Global Mangrove Biomass and Carbon Estimation

Blue carbon oxidation revealed by radiogenic and stable isotopes in a mangrove system

Methane Feedbacks to the Global Climate System in a Warmer World

Contact Info

Product

Resources

About