Blue carbon drawdown by restored mangrove forests improves with age

2022 ◽  
Vol 306 ◽  
pp. 114301
Author(s):  
Paul E. Carnell ◽  
Maria M. Palacios ◽  
Paweł Waryszak ◽  
Stacey M. Trevathan-Tackett ◽  
Pere Masqué ◽  
...  
Keyword(s):  
Author(s):  
Hideki Kokubu ◽  
Hideki Kokubu

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.


2019 ◽  
Vol 27 (4) ◽  
pp. 465-465
Author(s):  
Matthew T. Costa ◽  
Pelayo Salinas-de-León ◽  
Octavio Aburto-Oropeza

2018 ◽  
Vol 14 (7) ◽  
pp. 20180200 ◽  
Author(s):  
Damien T. Maher ◽  
Mitchell Call ◽  
Isaac R. Santos ◽  
Christian J. Sanders

The blue carbon paradigm has evolved in recognition of the high carbon storage and sequestration potential of mangrove, saltmarsh and seagrass ecosystems. However, fluxes of the potent greenhouse gases CH 4 and N 2 O, and lateral export of carbon are often overlooked within the blue carbon framework. Here, we show that the export of dissolved inorganic carbon (DIC) and alkalinity is approximately 1.7 times higher than burial as a long-term carbon sink in a subtropical mangrove system. Fluxes of methane offset burial by approximately 6%, while the nitrous oxide sink was approximately 0.5% of burial. Export of dissolved organic carbon and particulate organic carbon to the coastal zone is also significant and combined may account for an atmospheric carbon sink similar to burial. Our results indicate that the export of DIC and alkalinity results in a long-term atmospheric carbon sink and should be incorporated into the blue carbon paradigm when assessing the role of these habitats in sequestering carbon and mitigating climate change.


AMBIO ◽  
2014 ◽  
Vol 43 (8) ◽  
pp. 981-995 ◽  
Author(s):  
Tommaso Locatelli ◽  
Thomas Binet ◽  
James Gitundu Kairo ◽  
Lesley King ◽  
Sarah Madden ◽  
...  

2020 ◽  
Vol 61 (1) ◽  
pp. 150-167 ◽  
Author(s):  
Kakoli Banerjee ◽  
Chandan Kumar Sahoo ◽  
Gobinda Bal ◽  
Kapileswar Mallik ◽  
Rakesh Paul ◽  
...  

2019 ◽  
Vol 27 (4) ◽  
pp. 455-463 ◽  
Author(s):  
Matthew T. Costa ◽  
Pelayo Salinas-de-León ◽  
Octavio Aburto-Oropeza

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