Litterfall release, vegetative, and reproductive phenology investigation of <i>Heritiera fomes</i> Buch-Ham in the Sundarbans mangrove forests, Bangladesh: relationship with environmental variables

Azad, Md. Salim; Kamruzzaman, Md.; Paul, Sumonta K.; Kanzaki, Mamoru

doi:10.1080/21580103.2020.1786470

Cited by 3 publications

(1 citation statement)

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“…Organic matter from litterfall could increase CO 2 emissions (Attermeyer et al, 2018); this strongly correlates with aquatic CO 2 efflux (Gruca-Rokosz et al, 2017). Our efflux assessment during the dry season was simultaneous with the peak time for litterfall (Azad et al, 2020).In addition, mangroves that are characterized by anoxic conditions create low dissolved oxygen (DO) environments and thus may be a source of greenhouse gases (Page, 2022). Comparing with other studies, the average aquatic CO 2 efflux of the non-silvofishery pond (across the two seasons) was lower than the value recorded for a pond in China (Xiao et al, 2021).…”

Section: Effect Of Mangrove Conversion On Carbon Effluxesmentioning

confidence: 79%

Carbon stocks and effluxes in mangroves converted into aquaculture: a case study from Banten province, Indonesia

Royna,

Murdiyarso,

Sasmito

et al. 2024

Front. Ecol. Evol.

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Aquaculture is one of the main drivers of mangrove loss across Southeast Asian countries. The conversion of mangroves to aquaculture generates substantial loss of carbon stocks and reduces carbon storage capacity. Here, we present total ecosystem carbon stocks (TECS), carbon dioxide (CO2) and methane (CH4) effluxes obtained from mangrove forests (fringe and interior mangroves), silvofishery aquaculture ponds (dense and sparse mangroves), and non-silvofishery aquaculture ponds in Sawah Luhur, Banten, Indonesia. We found no significant difference in TECS across five land uses, ranging from 261 ± 14 Mg C ha-1 in non-silvofishery ponds to 574 ± 119 Mg C ha-1 in fringe mangroves. Most of these stocks were found in the soil carbon pool (87%) in fringe and interior mangroves. However, the conversion of mangroves to aquaculture ponds resulted in soil carbon loss from -6% to 60%. The highest soil CO2 effluxes during dry and wet seasons were observed in interior mangroves (151 ± 12 mg CO2 m-2 h-1). The highest soil CH4 effluxes were found in fringe mangroves with 0.13 ± 0.04 mg CH4 m-2 h-1. The highest aquatic CO2 and CH4 effluxes were found in dense silvofishery ponds, at 118 ± 7 mg CO2 m-2 h-1 and 0.38 ± 0.04 mg CH4 m-2 h-1, respectively. Our findings suggest that land use that includes mangroves (i.e., mangrove forest and/or silvofishery ponds) tends to have higher carbon stocks, soil, and aquatic CO2 and CH4 effluxes, compared to aquaculture ponds without mangroves. It is therefore crucial to maintain mangroves for natural carbon capture and storage through carbon stock enhancement.

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Section: Effect Of Mangrove Conversion On Carbon Effluxesmentioning

confidence: 79%