Coastal carbon cycle changes following mangrove loss

Sippo, James Z.; Sanders, Christian J.; Santos, Isaac R.; Jeffrey, Luke C.; Call, Mitchell; Harada, Yota; Maguire, Kylie; Brown, Dylan R.; Conrad, Stephen R.; Maher, Damien T.

doi:10.1002/lno.11476

Cited by 29 publications

(18 citation statements)

References 50 publications

(91 reference statements)

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“…Degradation of these wetlands could release the C trapped in the soil which could result in relatively higher C emissions (Sharma et al, 2020). A recent study estimated that the ongoing global carbon losses from historical mangrove deforestation and dieback could be 13.7 ± 9.4 Tg C year −1 , which is eightfold higher than previous estimates and offsets global mangrove carbon burial by ~ 60% (Sippo et al, 2020). A report also suggests that the loss of trapped C from the sediments due to degradation is higher than the C stock in the sediments contributed by above-ground vegetation (Kauffman et al, 2018).…”

Section: Discussionmentioning

confidence: 94%

“…The loss of mangrove habitats due to extreme climatic events has also become more common (Duke et al, 2017;Servino et al, 2018). A recent study reported a massive climate-driven mangrove dieback incident has experienced an increase in soil CO 2 efflux by ~ 189% and a decrease in oceanic dissolved inorganic carbon (DIC) outwelling of ~ 50% comparative to other areas with live mangroves (Sippo et al, 2020). Globally, from 2000 to 2015 mangrove forest destruction has led to a loss of 30-122 Tg C stored in the soil, with >75% of this loss attributed to Indonesia, Malaysia and Myanmar (Sanderman et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Carbon and nitrogen dynamics in a tropical mangrove along the southwestern coast of India

et al. 2021

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It is imperative to understand the carbon (C) and nitrogen (N) pools in tropical mangrove systems considering the diminished C storage potential and increasing nutrient loading in a global context due to rising anthropogenic disturbances. Here, we report that the Mangalavanam Coastal Wetland (MCW), a tropical mangrove stand, is a C-rich environment, with high sediment total organic carbon (70.35 ± 23.84 mg/g) and the δ 13 C (−26.56 ± 0.65‰) signatures indicate that the major source of carbon in the study area is from mangrove litter. The total nitrogen concentration in the sediment (3.78 ± 0.18 mg/g) was high despite the low N environment of mangrove ecosystems where the mangrove leaf litter was a major contributor to C. The sediment δ 15 N (7.70 ± 0.23‰) signatures indicated that the influence of anthropogenic N discharges and the contribution of marine algae were the primary cause of N enrichment. The mean δ 13 C and δ 15 N signatures of the mature mangrove leaves of the MCW were −28.66 ± 1.04‰ and 5.93 ± 0.65‰, respectively. The mangrove dweller crab Parasesarma plicatum was observed to have enriched δ 13 C (−23.78 ± 0.33‰) and δ 15 N (6.54 ± 0.35‰) signatures, indicative of a mixed dietary source. This study provides the impetus for ongoing conservation efforts to limit the loss of carbon storage and protect against the impact of anthropogenic nitrogen loadings on lowering the carbon and nitrogen emission potential for this system, which can have implications for other tropical mangrove systems as well.

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Section: Discussionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Carbon and nitrogen dynamics in a tropical mangrove along the southwestern coast of India

et al. 2021

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“…Extreme weather patterns in the past few years have caused extensive areas of mangrove tidal wetland vegetation dieback in northern Australia (Addicott et al, 2020; Asbridge et al, 2019; Duke et al, 2017) with the nature of these events being attributed to a low sea level event that was also associated with El Niño conditions (Sippo et al, 2020). Similarly, in the austral summer of 2010/2011, a marine heatwave associated with El Niño resulted in the collapse of ~1300 km 2 of seagrass extent in Shark Bay, Western Australia (Arias‐Ortiz et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

Current and future carbon stocks in coastal wetlands within the Great Barrier Reef catchments

Costa

Lovelock

Waltham

et al. 2021

Global Change Biology

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Australia's Great Barrier Reef (GBR) catchments include some of the world's most intact coastal wetlands comprising diverse mangrove, seagrass and tidal marsh ecosystems. Although these ecosystems are highly efficient at storing carbon in marine sediments, their soil organic carbon (SOC) stocks and the potential changes resulting from climate impacts, including sea level rise are not well understood. For the first time, we estimated SOC stocks and their drivers within the range of coastal wetlands of GBR catchments using boosted regression trees (i.e. a machine learning approach and ensemble method for modelling the relationship between response and explanatory variables) and identified the potential changes in future stocks due to sea level rise. We found levels of SOC stocks of mangrove and seagrass meadows have different drivers, with climatic variables such as temperature, rainfall and solar radiation, showing significant contributions in accounting for variation in SOC stocks in mangroves. In contrast, soil type accounted for most of the variability in seagrass meadows. Total SOC stock in the GBR catchments, including mangroves, seagrass meadows and tidal marshes, is approximately 137 Tg C, which represents 9%–13% of Australia's total SOC stock while encompassing only 4%–6% of the total extent of Australian coastal wetlands. In a global context, this could represent 0.5%–1.4% of global SOC stock. Our study suggests that landward migration due to projected sea level rise has the potential to enhance carbon accumulation with total carbon gains between 0.16 and 0.46 Tg C and provides an opportunity for future restoration to enhance blue carbon.

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“…Ekosistem mangrove dengan jenis homogen memiliki jasa ekosistem karbon yang lebih rendah dibandingkan dengan mangrove campuran (Tinh et al, 2020). Namun, mangrove yang terdegradasi akan terancam kehilangan keanekaragaman biota dan jasa ekosistemnya (Carugati et al, 2018;Sippo et al, 2020). Oleh karena itu, penentuan kualitas komunitas mangrove sangat diperlukan untuk menganalisis jasa ekosistem mangrove.…”

Section: Pendahuluanunclassified

Struktur Dan Kondisi Kesehatan Komunitas Mangrove Di Pulau Middleburg-Miossu, Papua Barat

Nurdiansah

Dharmawan

2021

J. Ilmu dan Teknologi Kelautan Tropis

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Ekosistem mangrove memiliki peranan penting bagi eksistensi dan penyediaan jasa ekosistem kepada masyarakat di pulau kecil. Fungsionalitas mangrove sangat tergantung dari ukuran, struktur komunitas dan kualitas ekosistem. Penelitian tentang penilaian kualitas struktur komunitas mangrove pulau kecil telah dilakukan di Pulau Middleburg-Miossu sebagai rangkaian dari Ekspedisi Nusa Manggala 2018. Penelitian ini bertujuan untuk menganalisis struktur komunitas dan indeks kesehatan mangrove (MHI) mangrove di pulau tersebut yang dihubungkan dengan indeks-indeks vegetasi berbasis penginderaan jauh. Lokasi penelitian dibagi menjadi empat zona, dimana hasil penelitian menunjukkan bahwa zona terdepan didominasi oleh jenis Sonneratia alba (INP 263,32%) dengan persentase tutupan kanopi < 50%, ukuran diameter > 20 cm dan ketinggian tegakan yang lebih rendah. Sementara itu, tiga zona lainnya ke arah darat, didominasi oleh jenis Ceriops tagal dengan persentase tutupan kanopi >80%, serta kerapatan pancang yang cukup tinggi. Secara keseluruhan, kondisi kesehatan mangrove di lokasi penelitian termasuk dalam kategori sedang/cukup baik dengan rentang nilai MHI 38,7-60,7%. Kombinasi indeks vegetasi NBR, GCI, SIPI dan ARVI menunjukkan nilai koefisien regresi yang paling tinggi untuk memprediksi nilai MHI, yaitu 0,831, berdasarkan analisis AIC. Interpolasi nilai MHI berdasarkan model regresi linier terbaik menunjukkan bahwa 6,56 ha mangrove di lokasi penelitian atau 40.74% termasuk dalam kategori sehat.

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Coastal carbon cycle changes following mangrove loss

Cited by 29 publications

References 50 publications

Carbon and nitrogen dynamics in a tropical mangrove along the southwestern coast of India

Carbon and nitrogen dynamics in a tropical mangrove along the southwestern coast of India

Current and future carbon stocks in coastal wetlands within the Great Barrier Reef catchments

Struktur Dan Kondisi Kesehatan Komunitas Mangrove Di Pulau Middleburg-Miossu, Papua Barat

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