Journal
SCIENTIFIC REPORTS
Volume 7, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/srep41225
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Funding
- European Commission [283157]
- Portuguese Foundation for Science and Technology, FCT, through the project LTER-RAVE [LTER/BIA-BEC/0063/2009]
- MCES (PIDDAC)
- POPH/FSE
- CAPES [0836109]
- CESAM [UID/AMB/50017/2013]
- FCT/MEC
- FEDER
- Compete
- [SFRH/BPD/79537/2011]
- [SFRH/BPD/107823/2015]
- [SFRH/BD/79170/2011]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/79170/2011] Funding Source: FCT
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Ria de Aveiro is a mesotidal coastal lagoon with one of the largest continuous salt marshes in Europe. The objective of this work was to assess C, N and P stocks of Spartina maritima (low marsh pioneer halophyte) and Juncus maritimus (representative of mid-high marsh halophytes) combined with the contribution of Halimione portulacoides, Sarcocornia perennis, and Bolbochenous maritimus to the lagoon approximate to 4400 ha marsh area. A multivariate analysis (PCO), taking into account environmental variables and the annual biomass and nutrient dynamics, showed that there are no clear seasonal or spatial differences within low or mid-high marshes, but clearly separates J. maritimus and S. maritima marshes. Calculations of C, N and P stocks in the biomass of the five most representative halophytes plus the respective rhizosediment (25 cm depth), and taking into account their relative coverage, represents 252053 Mg C, 38100 Mg N and 7563 Mg P. Over 90% of the stocks are found within mid-high marshes. This work shows the importance of this lagoon's salt marshes on climate and nutrients regulation, and defines the current condition concerning the 'blue carbon' and nutrient stocks, as a basis for prospective future scenarios of salt marsh degradation or loss, namely under SLR context.
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