Relevance of carbon burial and storage in two contrasting blue carbon ecosystems of a north-east Pacific coastal lagoon

Cuéllar-Martínez, Tomasa; Sanchez-Cabeza, Joan-Albert; Pérez-Bernal, Libia Hascibe; Sandoval‐Gil, Jose Miguel

doi:10.1016/j.scitotenv.2019.03.388

Cited by 24 publications

(8 citation statements)

References 60 publications

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“…As a result, the organic carbon density of benthic surface sediments at Bahía de San Quintín is low (6.3 ± 0.3 mg C cm −3 ), comparable to median estimates for temperate Z. marina meadows (Röhr et al 2018), but less than half of the values reported for global seagrass meadows (Fourqurean et al 2012). We report a carbon sequestration rate of 4.5 ± 2.5 g C m −2 yr −1 , which compares to the lower bounds of previous estimates for Z. marina meadows at BF (Cuellar‐Martinez et al 2019) and the Northeast Pacific (Prentice et al 2020) and is well below estimates for seagrass globally (81–133 g C m −2 yr −1 ; Duarte et al 2013). However, C burial can be expected to vary across the bay and our benthic coring locations may not represent the sites of most efficient C burial.…”

Section: Discussionsupporting

confidence: 67%

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Beyond habitat boundaries: Organic matter cycling requires a system‐wide approach for accurate blue carbon accounting

Krause

Hinojosa‐Corona

Gray

et al. 2022

Limnology & Oceanography

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As coastal ecosystems become widely recognized for their capacity to sequester carbon (blue carbon), standard accounting methodologies for the generation of carbon credits are being developed. To ensure the applicability of these standards across blue carbon ecosystems, we investigated organic carbon provenance and burial in salt marshes and seagrass meadows of an arid, upwelling-dominated Eastern Pacific lagoon. We found low carbon density in benthic sediments of Bahía de San Quintín (5.9 AE 0.5 mg C cm À3 ), only marginally higher in Zostera marina beds (6.9 AE 0.5 mg C cm À3 ), likely due to remineralization and hydrodynamically driven export of seagrass material, resulting in low carbon burial rates (4.5 AE 2.5 g C m À2 yr À1 ). Sediment organic carbon is mainly controlled by the fraction of fine sediment and its source is largely allochthonous, although sources differ spatially. Salt marshes at San Quintín derive 40% of their organic matter from autochthonous material and exhibit higher carbon burial rates (up to 414.7 AE 28.6 g C m À2 yr À1 ) and sediment carbon densities (32.0 AE 0.7 mg C cm À3 ) compared to benthic sediments. This study emphasizes the connectivity of blue carbon habitats with marsh plant detritus supplementing benthic carbon burial and incorporation of detrital eelgrass in marsh sediments. Our findings highlight the importance of allochthonous organic matter for carbon sequestration in blue carbon habitats, suggesting standard accounting practices that deduct allochthonous organic matter would miss the full potential for carbon burial.

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Section: Discussionsupporting

confidence: 67%

“…In addition, the low Pb‐210ex activity in seagrass core BF 1 contributes to large uncertainty in our C burial rate estimate. For comparison, two cores collected from more sheltered seagrass meadows in BF had higher C burial rates of 26.8–90.2 g C m −2 yr −1 (Cuellar‐Martinez et al 2019).…”

Section: Discussionmentioning

confidence: 99%

Beyond habitat boundaries: Organic matter cycling requires a system‐wide approach for accurate blue carbon accounting

Krause

Hinojosa‐Corona

Gray

et al. 2022

Limnology & Oceanography

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“…For THIII core, for example, the average values in the sediments changed from 7.32 g C m −2 yr −1 , for the core bottom (1901–1923), to 69.70 g C m −2 yr −1 in its uppermost part (1923–1985), while for THI, values average were stable around 74.13 g C m −2 yr −1 since ~ 1970. For comparison, at San Quintín Bay, a shallow lagoon in Mexico, carbon burial estimations revealed an average carbon burial rate between 29.7 and 42.2 g C m −2 yr −1 from sediment cores retrieved at the saltmarsh and 57.9 and 58.5 g C m −2 yr −1 from the ones recovered at the seagrass dominated area (Cuellar‐Martinez et al 2019). For the Indian Ocean upwelling region off Java and Sumatra, Indonesia, the maximum organic carbon accumulation rates were between 5.2 and 10.4 g C m −2 yr −1 (Baumgart et al 2010).…”

Section: Resultsmentioning

confidence: 99%

“…Considering their insertion in an arid environment, there coastal wetlands provide surprisingly high levels of regional ecosystem services that support fisheries (Aburto-Oropeza et al 2008), biodiversity (Sievers et al 2019), and carbon sequestration (Adame et al 2018). The presented comparisons point to the relevance of the Khnifiss Lagoon as a carbon burial ecosystem and highlight the need for more data on organic carbon burial rates for the poorly studied tidal flatsaltmarsh ecosystems (Cuellar-Martinez et al 2019). An improved understanding of the ecology, process, and dynamics of coastal vegetated wetlands in arid environments is necessary to protect and maintain their valued ecosystem services (Adame et al 2021).…”

Section: Environmental Changes In the Khnifiss Lagoonmentioning

confidence: 91%

Coastal wetland responses to a century of climate change in northern Sahara, Morocco

Nogueira

Evangelista

Bouchaou

et al. 2021

Limnology & Oceanography

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Coastal wetlands are highly sensitive to changes occurring at the coastline. It is critically important to determine regionspecific projections for these areas due to their specificities and vulnerabilities to climate change. This work aimed to value the impacts of recent climate changes at West Africa Sahara coastland, southern Morocco, at Khnifiss Lagoon. We have applied a combined approach using remote sensing techniques and environmental reconstructions based on highresolution analysis of sediment cores, covering the current warm period. Remote sensing highlighted changes to the lagoon inlet, accompanied by a greater meandering character of the tidal channels. As a response, the sediment cores have recorded a predominant vegetation substitution due to changes in the tidal limit, and an increase in organic carbon accumulation was observed. For the current climatology, during positive phases of the North Atlantic Oscillation, winds reaching the coast strengthen in an east-to-west direction. In the Khnifiss Lagoon, whose inlet is dominated by the ebb tide, the intensity and direction of the winds on the coast at surface level modifies its connection to the ocean by increasing sediment transport toward the interior of the lagoon. Locally biological responses to wind intensification, and possibly sea-level rise, exemplify the lagoon sensitivity to large-scale processes. Coastal vegetated wetlands are considered to be highly dynamic environments. However, we expect a loss of the upper tidal vegetation due to boundary conditions limiting the accommodation space in this arid environment in a possible future scenario of continuously inland tidal line displacement.

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“…(2) Protecting marine environments is an important part of sustainable island tourism. This is because the blue carbon ecosystem is a part of the marine ecological system, which provides a species habitat, coastal protection, cultural services, and carbon sequestration [34,93,94]. Zhang et al [53] thought that the development topics of island tourism include ecotourism concepts and ecological protection, tourism and brand activities, tourism propaganda, and infrastructure and outlets.…”

Section: Discussionmentioning

confidence: 99%

The Sustainable Island Tourism Evaluation Model Using the FDM-DEMATEL-ANP Method

Huang¹,

Chen

2022

Sustainability

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The purpose of this study is first to propose a comprehensive evaluation model for sustainable island tourism, and then to provide guidelines and suggestions for the development thereof. Based on the advantages of using fuzzy set theory, this study’s method included the fuzzy Delphi method (FDM), the decision-making trial and evaluation laboratory (DEMATEL), the analytic network process (ANP), and FDM- DEMATEL-ANP (FDANP). From the literature review results and experts’ surveys, the dimensions of the evaluation criteria for sustainable island tourism are governance, economy and finance, socio-culture, and the environment. Compared with other studies, its major contributions and differences are the governance and finance dimensions, and the evaluation criteria for the marine industry, marine cultures, and marine environments. The findings show that the relative importance of the dimensions from high to low are economy and finance, governance, the environment, and socio-culture. The top five key criteria begin with having an official administration organization, having a tourism industry, and revenue uncertainties based on public health events. These, along with policies and regulations, and local food and drink, are thought to provide the necessary conditions for sustainable island tourism. The implications for theory and practice and future research directions are discussed.

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Relevance of carbon burial and storage in two contrasting blue carbon ecosystems of a north-east Pacific coastal lagoon

Cited by 24 publications

References 60 publications

Beyond habitat boundaries: Organic matter cycling requires a system‐wide approach for accurate blue carbon accounting

Beyond habitat boundaries: Organic matter cycling requires a system‐wide approach for accurate blue carbon accounting

Coastal wetland responses to a century of climate change in northern Sahara, Morocco

The Sustainable Island Tourism Evaluation Model Using the FDM-DEMATEL-ANP Method

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