Tropical wetlands and REDD+: Three unique scientific challenges for policy

Friess, Daniel A.

doi:10.5130/ijrlp.i1.2013.3258

Cited by 5 publications

(5 citation statements)

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“…The high C accumulation of coastal wetlands is due to high rates of primary production by the vegetation and the storage of a significant proportion of that production within anaerobic sediments, and also due to trapping of C from a range of sources including terrestrial sediments or marine detritus, autochthonous production by micro‐ and macroalgae and local water column production by phytoplankton (Bouillon, Moens, Overmeer, Koedam, & Dehairs, ; Kristensen, Bouillon, Dittmar, & Marchand, ). The accumulation of C from all sources makes mangrove forests and other intertidal wetland environments highly efficient and globally significant sites of “blue” C storage (Duarte, Losada, Hendriks, Mazarrasa, & Marba, ; Nellemann et al., ) which has led to exploration of their inclusion in climate change mitigation strategies such as Reducing Emissions from Deforestation and Forest Degradation in Developing Countries (REDD+; Friess, ; IPCC, ) and voluntary C markets (Locatelli et al., ; Ullman, Bilbao‐Bastida, & Grimsditch, ).…”

Section: Introductionmentioning

confidence: 99%

Dynamics of sediment carbon stocks across intertidal wetland habitats of Moreton Bay, Australia

Hayes

Jesse

Hawke

et al. 2017

Global Change Biology

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Coastal wetlands are known for high carbon storage within their sediments, but our understanding of the variation in carbon storage among intertidal habitats, particularly over geomorphological settings and along elevation gradients, is limited. Here, we collected 352 cores from 18 sites across Moreton Bay, Australia. We assessed variation in sediment organic carbon (OC) stocks among different geomorphological settings (wetlands within riverine settings along with those with reduced riverine influence located on tide-dominated sand islands), across elevation gradients, with distance from shore and among habitat and vegetation types. We used mid-infrared (MIR) spectroscopy combined with analytical data and partial least squares regression to quantify the carbon content of ~2500 sediment samples and provide fine-scale spatial coverage of sediment OC stocks to 150 cm depth. We found sites in river deltas had larger OC stocks (175-504 Mg/ha) than those in nonriverine settings (44-271 Mg/ha). Variation in OC stocks among nonriverine sites was high in comparison with riverine and mixed geomorphic settings, with sites closer to riverine outflow from the east and south of Moreton Bay having higher stocks than those located on the sand islands in the northwest of the bay. Sediment OC stocks increased with elevation within nonriverine settings, but not in riverine geomorphic settings. Sediment OC stocks did not differ between mangrove and saltmarsh habitats. OC stocks did, however, differ between dominant species across the research area and within geomorphic settings. At the landscape scale, the coastal wetlands of the South East Queensland catchments (17,792 ha) are comprised of approximately 4,100,000-5,200,000 Mg of sediment OC. Comparatively high variation in OC storage between riverine and nonriverine geomorphic settings indicates that the availability of mineral sediments and terrestrial derived OC may exert a strong influence over OC storage potential across intertidal wetland systems.

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Section: Introductionmentioning

confidence: 99%

Dynamics of sediment carbon stocks across intertidal wetland habitats of Moreton Bay, Australia

Hayes

Jesse

Hawke

et al. 2017

Global Change Biology

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“…Recientemente, comparaciones rigurosas de aerofotografías multi-temporales sugieren que las tasas de pérdida de manglar se encuentran en el rango de 0,4-0,9% para las áreas peri-urbanas del delta del río Turbo (Estrada-Urrea 2014, Ruíz-Duque 2013). Estas tasas actualizadas son similares a las de otros sitios en América Latina y África Occidental (FAO 2008, Friess 2013, con las cuales se comparten afinidades florísticas. Por ejemplo, Hirales-Cota et al (2010) en la costa del Caribe mexicano identificaron tasa de deforestación anual de 0,85% durante un periodo de 12 años, considerada relativamente alta en comparación con otros manglares en México, y asociada principalmente a cambios de uso del suelo (asentamientos humanos, cultivos y caminos), tal como ocurre en los manglares del Golfo.…”

Section: Discussionunclassified

Reservorios de biomasa aérea y de carbono en los manglares del golfo de Urabá (Caribe colombiano)

2015

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ResumenLos manglares son los principales reservorios de biomasa aérea (BA) y carbono (C) sobre el suelo entre los ecosistemas marino-costeros tropicales. A partir de datos estructurales de campo y de ecuaciones alométricas publicadas, se estiman los reservorios de BA y C en la vegetación de las cuatro áreas de manglar más extensas del golfo de Urabá. Los manglares del delta del río Atrato mostraron los mayores reservorios de BA y C (165 y 83 t/ha, respectivamente) concentrados en árboles de Rhizophora mangle, al igual que los de la ensenada de Rionegro (115 y 58 t/ha, respectivamente). En el costado suroriental del Golfo, los mayores valores se obtuvieron en los manglares de Puerto César-Punta Coquito (85 y 43 t/ha, respectivamente), y por último los de Turbo (76 y 38 t C/ha, respectivamente), ambos dominados por Avicennia germinans. En Turbo predominaron árboles de R. mangle y Laguncularia racemosa de diámetros < 5 cm, reflejo de la fuerte intervención antrópica y los reservorios de BA y C son menores que los de Puerto César-Punta Coquito, más alejado de la cabecera urbana. Los reservorios de biomasa de los manglares del Golfo se encuentran dentro del rango observado en todo el mundo, pero los del delta del río Atrato se acercan más al límite superior registrado. Los manglares mejor conservados del golfo de Urabá son reservorios importantes de C en la BA. La magnitud del reservorio está inversamente relacionada con la distancia a los dos principales centros poblados.Palabras claves: Avicennia germinans, deforestación, Expedición Antioquia 2013, Laguncularia racemosa, Rhizophora mangle, tala selectiva AbstractMangroves are the major aboveground biomass (AB) and carbon (C) stocks among the tropical coastal and marine ecosystems. In this study, we estimated the AB and C stocks from the four largest mangrove areas in the Urabá Gulf, by using published allometric equations in combination with field-obtained forest structure data. The Atrato River Delta exhibited the largest AB and C stocks (165 and 83 t/ha, respectively) due to the dominance of large-diameter Rhizophora mangle trees (> 15 cm), followed by Rionegro Cove (115 and 58 t/ha, respectively), also dominated by the same species. In the Southeastern coast of the Gulf, the largest AB and C stocks were observed in the Puerto César-Punta Coquito sector (85 and 43 t/ha, respectively), followed by the Turbo sector (76 and 38 t C/ha, respectively), both dominated by Avicennia germinans. In the Turbo sector, there was a high density of thin diameter (< 5 cm) R. mangle and Laguncularia racemosa trees, as a consequence of the high logging pressure. The AB and C stocks of these species in the Turbo sector were lower than those observed in the Puerto César-Punta Coquito, located far from the urban area of the Turbo City. The biomass stocks of mangroves in the Urabá Gulf lay within the range observed worldwide, but the Atrato River Delta was one of the largest. This study concluded that mangroves in the Urabá Gulf are significant C stocks, mainly those within conservatio...

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“…(Friess et al, 2020;Herr & Landis, 2016;Martin et al, 2016;Taillardat et al, 2018). Furthermore, mangroves have also been considered as an important ecosystem in climate change mitigation strategies within voluntary carbon markets and by Reducing Emissions from Deforestation and Forest Degradation (REDD+) initiative in developing countries (Friess, 2013;IPCC, 2007;Locatelli et al, 2014;MacKenzie et al, 2021). A range of countries have committed to reducing mangrove degradation and investing in mangrove conservation and restoration to achieve their NDC targets (Arifanti et al, 2022;Herr & Landis, 2016;Martin et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Mangroves have been included as an important component of national and global climate change mitigation policies within the land use, land use change and forestry (LULUCF) sector as a part of the Nationally Determined Contribution (NDC) commitments under the Paris Agreement (2016), and to achieve the United Nations Sustainable Development Goals (SDGs) including combat climate change (SDG13) and life below water (SDG14) (Friess et al, 2020; Herr & Landis, 2016; Martin et al, 2016; Taillardat et al, 2018). Furthermore, mangroves have also been considered as an important ecosystem in climate change mitigation strategies within voluntary carbon markets and by Reducing Emissions from Deforestation and Forest Degradation (REDD+) initiative in developing countries (Friess, 2013; IPCC, 2007; Locatelli et al, 2014; MacKenzie et al, 2021). A range of countries have committed to reducing mangrove degradation and investing in mangrove conservation and restoration to achieve their NDC targets (Arifanti et al, 2022; Herr & Landis, 2016; Martin et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Importance of mangrove plantations for climate change mitigation in Bangladesh

Uddin

Aziz

Lovelock

2023

Global Change Biology

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Mangroves have been identified as blue carbon ecosystems that are natural carbon sinks. In Bangladesh, the establishment of mangrove plantations for coastal protection has occurred since the 1960s, but the plantations may also be a sustainable pathway to enhance carbon sequestration, which can help Bangladesh meet its greenhouse gas (GHG) emission reduction targets, contributing to climate change mitigation. As a part of its Nationally Determined Contribution (NDC) under the Paris Agreement 2016, Bangladesh is committed to limiting the GHG emissions through the expansion of mangrove plantations, but the level of carbon removal that could be achieved through the establishment of plantations has not yet been estimated. The mean ecosystem carbon stock of 5-42 years aged (average age: 25.5 years) mangrove plantations was 190.1 (±30.3) Mg C ha −1 , with ecosystem carbon stocks varying regionally. The biomass carbon stock was 60.3 (±5.6) Mg C ha −1 and the soil carbon stock was 129.8 (±24.8) Mg C ha −1 in the top 1 m of which 43.9 Mg C ha −1 was added to the soil after plantation establishment. Plantations at age 5 to 42 years achieved 52% of the mean ecosystem carbon stock calculated for the reference site (Sundarbans natural mangroves). Since 1966, the 28,000 ha of established plantations to the east of the Sundarbans have accumulated approximately 76,607 Mg C year −1 sequestration in biomass and 37,542 Mg C year −1 sequestration in soils, totaling 114,149 Mg C year −1 . Continuation of the current plantation success rate would sequester an additional 664,850 Mg C by 2030, which is 4.4% of Bangladesh's 2030 GHG reduction target from all sectors described in its NDC, however, plantations for climate change mitigation would be most effective 20 years after establishment. Higher levels of investment in mangrove plantations and higher plantation establishment success could contribute up to 2,098,093 Mg C to blue carbon sequestration and climate change mitigation in Bangladesh by 2030.

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Tropical wetlands and REDD+: Three unique scientific challenges for policy

Cited by 5 publications

References 5 publications

Dynamics of sediment carbon stocks across intertidal wetland habitats of Moreton Bay, Australia

Dynamics of sediment carbon stocks across intertidal wetland habitats of Moreton Bay, Australia

Reservorios de biomasa aérea y de carbono en los manglares del golfo de Urabá (Caribe colombiano)

Importance of mangrove plantations for climate change mitigation in Bangladesh

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