Variation in the carbon cycle of the Sevastopol Bay (Black Sea)

3rd International Conference Environment and Sustainable Development of Territories: Ecological Challenges of the 21st Century

生态环境科学;地球科学;经济学

Orekhova, N.A.^1 ; Konovalov, S.K.^1

Marine Hydrophysical Institute of RAS, Kapitanskaya str. 2, 299011, Russia^1

关键词: Atmospheric pCO2;    Biological pumps;    Carbon production;    Dissolved inorganic carbon;    Economic potentials;    Inorganic carbon;    Marine biogeochemistries;    Temporal and spatial variability;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/107/1/012070/pdf
DOI  :  10.1088/1755-1315/107/1/012070

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Continuous increase in CO2inventory in the ocean results in dramatic changes in marine biogeochemistry, e.g. acidification. That is why temporal and spatial variabilities in atmospheric pCO2and dissolved inorganic carbon, including CO2, pH and alkalinity in water, as well as organic and inorganic carbon in bottom sediments have to be studied together making possible to resolve the key features of the carbon cycle transformation. A 30% increase of pCO2in the Sevastopol Bay for 2008 - 2016 evidences changes in the DIC components ratios and a significant decrease in the ability to absorb atmospheric CO2by surface waters. High organic carbon content in the bottom sediments and predominance of organic carbon production in the biological pump at inner parts of the bay reveal ongoing transformation of the carbon cycle. This has negative consequences for recreation, social and economic potentials of the Sevastopol region.