Carbon Stock in Coastal Ecosystems of Tombolos of the White and Baltic Seas

Ilya Bagdasarov, Michail Tseits, Iuliia Kryukova, Kseniya Taskina, Anna Bobrik, Igor Ilichev, Junxiang Cheng, Ligang Xu and Pavel Krasilnikov ()
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Ilya Bagdasarov: Faculty of Soil Science, Moscow State University, 119991 Moscow, Russia
Michail Tseits: Faculty of Soil Science, Moscow State University, 119991 Moscow, Russia
Iuliia Kryukova: Faculty of Soil Science, Moscow State University, 119991 Moscow, Russia
Kseniya Taskina: Institute of Biology, Karelian Research Center, Russian Academy of Sciences, 185910 Petrozavodsk, Russia
Anna Bobrik: Faculty of Soil Science, Moscow State University, 119991 Moscow, Russia
Igor Ilichev: Faculty of Soil Science, Moscow State University, 119991 Moscow, Russia
Junxiang Cheng: Key Laboratory of Watershed Geographic Sciences, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
Ligang Xu: Key Laboratory of Watershed Geographic Sciences, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
Pavel Krasilnikov: Faculty of Soil Science, Moscow State University, 119991 Moscow, Russia

Land, 2023, vol. 13, issue 1, 1-21

Abstract: “Blue carbon”, apart from marine humus, includes the carbon (C) stock of coastal ecosystems such as mangroves, saltmarshes, and seagrass meadows, which have been overlooked until recently. Information about the role of coastal wetlands in C sequestration and providing other ecosystem services is still insufficient. In the present study, we assessed the C reserves of soils and vegetation biomass in two complex coastal landscapes (tombolos) located on the coasts of the White and Baltic seas. The soil and plant C stocks were slightly higher at the plot on the Baltic Sea (93.4 ± 46.7 Mg C·ha −1 and 5.22 ± 2.51 Mg C·ha −1 , respectively) than at the plot on the White Sea (71.4 ± 38.2 Mg C·ha −1 and 3.95 ± 2.42 Mg C·ha −1 , respectively). We attributed the higher values of the C reserved to a warmer climate and less saline water at the plot on the Baltic Sea. Both soil and plant C showed high heterogeneity due to geomorphological complexity and differences in vegetative communities. The Phragmites australis community showed the highest plant biomass and, in some places, high soil C reserves. Allochthonous C contributed to the soil C stock at the site on the White Sea. Though P. australis sequestered more C than other communities, its effect on ecosystem services was mostly negative because the invasion of reeds reduced the biological diversity of the marshes.

Keywords: “blue carbon”; carbon sequestration; marsh; wetland; soil carbon stock; plant biomass carbon stock; Phragmites australis (search for similar items in EconPapers)
JEL-codes: Q15 Q2 Q24 Q28 Q5 R14 R52 (search for similar items in EconPapers)
Date: 2023
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