scholarly journals CO2 released by carbonate sediment production in some coastal areas may offset the benefits of seagrass “Blue Carbon” storage

2017 ◽  
Vol 63 (1) ◽  
pp. 160-172 ◽  
Author(s):  
Jason L. Howard ◽  
Joel C. Creed ◽  
Mariana V. P. Aguiar ◽  
James W. Fourqurean
Keyword(s):  
Carbon Storage ◽  
Coastal Areas ◽  
Blue Carbon ◽  
Carbonate Sediment ◽  
Sediment Production

A FUNDAMENTAL STUDY ON CARBON STORAGE BY ZOSTERA MARINA IN ISE BAY, JAPAN

2017 ◽  
Author(s):  
Hideki Kokubu ◽  
Hideki Kokubu
Keyword(s):  
Carbon Storage ◽  
Salt Marshes ◽  
Zostera Marina ◽  
Standing Stock ◽  
Coastal Ecosystems ◽  
Blue Carbon ◽  
Mangrove Forests ◽  
Fundamental Study ◽  
Strong Argument ◽  
Ise Bay

Blue Carbon, which is carbon captured by marine organisms, has recently come into focus as an important factor for climate change initiatives. This carbon is stored in vegetated coastal ecosystems, specifically mangrove forests, seagrass beds and salt marshes. The recognition of the C sequestration value of vegetated coastal ecosystems provides a strong argument for their protection and restoration. Therefore, it is necessary to improve scientific understanding of the mechanisms that stock control C in these ecosystems. However, the contribution of Blue Carbon sequestration to atmospheric CO2 in shallow waters is as yet unclear, since investigations and analysis technology are ongoing. In this study, Blue Carbon sinks by Zostera marina were evaluated in artificial (Gotenba) and natural (Matsunase) Zostera beds in Ise Bay, Japan. 12-hour continuous in situ photosynthesis and oxygen consumption measurements were performed in both areas by using chambers in light and dark conditions. The production and dead amount of Zostera marina shoots were estimated by standing stock measurements every month. It is estimated that the amount of carbon storage as Blue Carbon was 237g-C/m2/year and 197g-C/m2/year in the artificial and natural Zostera marina beds, respectively. These results indicated that Zostera marina plays a role towards sinking Blue Carbon.

Control of “blue carbon” storage by mangrove ageing: Evidence from a 66-year chronosequence in French Guiana

2018 ◽  
Vol 24 (6) ◽  
pp. 2325-2338 ◽  
Author(s):  
Romain Walcker ◽  
Laure Gandois ◽  
Christophe Proisy ◽  
Dov Corenblit ◽  
Éric Mougin ◽  
...  
Keyword(s):  
Carbon Storage ◽  
French Guiana ◽  
Blue Carbon

Quantifying the impact of industrialization on blue carbon storage in the coastal area of Metropolitan Semarang, Indonesia

2020 ◽  
Vol 124 ◽  
pp. 102319 ◽  
Author(s):  
Anang Wahyu Sejati ◽  
Imam Buchori ◽  
Siti Kurniawati ◽  
Yako C. Brana ◽  
Tiara I. Fariha
Keyword(s):  
Carbon Storage ◽  
Coastal Area ◽  
Blue Carbon ◽  
The Impact

scholarly journals Blue Carbon Storage Capacity of Temperate Eelgrass (Zostera marina) Meadows

2018 ◽  
Vol 32 (10) ◽  
pp. 1457-1475 ◽  
Author(s):  
Maria Emilia Röhr ◽  
Marianne Holmer ◽  
Julia K. Baum ◽  
Mats Björk ◽  
Katharyn Boyer ◽  
...  
Keyword(s):  
Carbon Storage ◽  
Zostera Marina ◽  
Storage Capacity ◽  
Blue Carbon

A comparative analysis of the organic and inorganic carbon content of Halimeda and Penicillus (Chlorophyta, Bryopsidales) in a coastal subtropical lagoon

2019 ◽  
Vol 62 (4) ◽  
pp. 323-326
Author(s):  
Danielle Catherine Hatt ◽  
Ligia Collado-Vides
Keyword(s):  
Coastal Waters ◽  
Inorganic Carbon ◽  
Carbonate Sediment ◽  
Term Study ◽  
Sediment Production ◽  
Long Term Study ◽  
Organic And Inorganic Carbon ◽  
Maximum Contribution ◽  
Subtropical Lagoon

Abstract Standing stocks of the calcifying algae, Halimeda and Penicillus, have remained stable over the 10 years surveyed (2007–2017) in Florida Bay (USA), a subtropical lagoon. The maximum contribution of calcium carbonate (CaCO3; 779.75 g m−2) was lower compared to tropical lagoons. Halimeda was more abundant and had higher inorganic:organic carbon ratios compared to Penicillus. The abundance of Penicillus varied across the surveyed sites, Sprigger Bank, Bob Allen Keys, and Duck Key, while its inorganic:organic carbon ratios did not vary significantly. Our long-term study provides a critical baseline that can help understand fluctuations in carbonate sediment production by calcareous algae in subtropical coastal waters.

scholarly journals From platform top to adjacent deep sea: New source-to-sink insights into carbonate sediment production and transfer in the SW Indian Ocean (Glorieuses archipelago)

2020 ◽  
Vol 423 ◽  
pp. 106144
Author(s):  
Stéphan J. Jorry ◽  
Gwenael Jouet ◽  
Evan N. Edinger ◽  
Samuel Toucanne ◽  
John W. Counts ◽  
...  
Keyword(s):  
Indian Ocean ◽  
Deep Sea ◽  
Carbonate Sediment ◽  
Sediment Production ◽  
Source To Sink ◽  
Sw Indian Ocean

Dynamics of carbonate sediment production by Halimeda: implications for reef carbonate budgets

2020 ◽  
Vol 639 ◽  
pp. 91-106
Author(s):  
C Castro-Sanguino ◽  
YM Bozec ◽  
PJ Mumby
Keyword(s):  
Major Contributor ◽  
Indirect Pathway ◽  
Carbonate Sediment ◽  
Carbonate Production ◽  
Sediment Production ◽  
Carbonate Budget ◽  
Shoreline Protection ◽  
Fish Herbivory ◽  
Manipulative Experiments ◽  
Gains And Losses

Reef carbonate production and sediment generation are key processes for coral reef development and shoreline protection. The calcified green alga Halimeda is a major contributor of calcareous sediments, but rates of production and herbivory upon Halimeda are driven by biotic and environmental factors. Consequently, estimating rates of calcium carbonate (CaCO3) production and transformation into sediment requires the integration of Halimeda gains and losses across habitats and seasons, which is rarely considered in carbonate budgets. Using seasonal rates of recruitment, growth, senescence and herbivory derived from observations and manipulative experiments, we developed an individual-based model to quantify the annual cycle of Halimeda carbonate and sediment production at Heron Island, Great Barrier Reef. Halimeda population dynamics were simulated both within and outside branching Acropora canopies, which provide refuge from herbivory. Shelter from herbivory allowed larger Halimeda thalli to grow, leading to higher rates of carbonate accumulation (3.9 and 0.9 kg CaCO3 m-2 yr-1 within and outside Acropora canopies, respectively) and sediment production (2.5 versus 1.0 kg CaCO3 m-2 yr-1, respectively). Overall, 37% of the annual carbonate production was transformed into sediments through senescence (84%) and fish herbivory (16%), with important variations among seasons and habitats. Our model underlines that algal rates of carbonate production are likely to be underestimated if herbivory is not integrated into the carbonate budget, and reveals an important indirect pathway by which structurally complex coral habitats contribute to reef carbonate budgets, suggesting that coral losses due to climate change may lead to further declines in reef sediment production.

scholarly journals Assessment of Blue Carbon Storage Loss in Coastal Wetlands under Rapid Reclamation

2018 ◽  
Vol 10 (8) ◽  
pp. 2818 ◽  
Author(s):  
Yi Li ◽  
Jianhui Qiu ◽  
Zheng Li ◽  
Yangfan Li
Keyword(s):  
Ecosystem Services ◽  
Carbon Storage ◽  
Coastal Wetlands ◽  
Carbon Emission ◽  
Blue Carbon ◽  
Total Carbon ◽  
Carbon Loss ◽  
Coastal Reclamation ◽  
Natural Wetlands ◽  
Reclamation Area

Highly productive coastal wetlands play an essential role in storing blue carbon as one of their ecosystem services, but they are increasingly jeopardized by intensive reclamation activities to facilitate rapid population growth and urbanization. Coastal reclamation causes the destruction and severe degradation of wetland ecosystems, which may affect their abilities to store blue carbon. To assist with international accords on blue carbon, we evaluated the dynamics of blue carbon storage in coastal wetlands under coastal reclamation in China. By integrating carbon density data collected from field measurement experiments and from the literature, an InVEST model, Carbon Storage and Sequestration was used to estimate carbon storage across the reclamation area between 1990 and 2015. The result is the first map capable of informing about blue carbon storage in coastal reclamation areas on a national scale. We found that more than 380,000 hectares of coastal wetlands were affected by reclamation, which resulted in the release of ca. 20.7 Tg of blue carbon. The carbon loss from natural wetlands to artificial wetlands accounted for 72.5% of total carbon loss, which highlights the major task in managing coastal sustainability. In addition, the top 20% of coastal wetlands in carbon storage loss covered 4.2% of the total reclamation area, which can be applied as critical information for coastal redline planning. We conclude that the release of blue carbon due to the conversion of natural wetlands exceeded the total carbon emission from energy consumption within the reclamation area. Implementing the Redline policy could guide the management of coastal areas resulting in greater resiliency regarding carbon emission and sustained ecosystem services.

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