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Full-Text Articles in Life Sciences
Methane Emissions In Seagrass Meadows As A Small Offset To Carbon Sequestration, Yvonne Y. Y. Yau, Gloria Reithmaier, Caludia Majtényi-Hill, Oscar Serrano, Nerea Piñeiro-Juncal, Martin Dahl, Miguel A. Mateo, Stefano Bonaglia, Isaac R. Santos
Methane Emissions In Seagrass Meadows As A Small Offset To Carbon Sequestration, Yvonne Y. Y. Yau, Gloria Reithmaier, Caludia Majtényi-Hill, Oscar Serrano, Nerea Piñeiro-Juncal, Martin Dahl, Miguel A. Mateo, Stefano Bonaglia, Isaac R. Santos
Research outputs 2022 to 2026
Seagrass meadows are effective carbon sinks due to high primary production and sequestration in sediments. However, methane (CH4) emissions can partially counteract their carbon sink capacity. Here, we measured diffusive sediment-water and sea-air CO2 and CH4 fluxes in a coastal embayment dominated by Posidonia oceanica in the Mediterranean Sea. High-resolution timeseries observations revealed large spatial and temporal variability in CH4 concentrations (2–36 nM). Lower sea-air CH4 emissions were observed in an area with dense seagrass meadows compared to patchy seagrass. A 6%−40% decrease of CH4 concentration in the surface water around noon indicates that photosynthesis likely limits CH4 fluxes. Sediments …
Dynamics And Fate Of Blue Carbon In A Mangrove–Seagrass Seascape: Influence Of Landscape Configuration And Land-Use Change, Maria E. Asplund, Martin Dahl, Rashid O. Ismail, Ariane Arias-Ortiz, Diana Deyanova, João N. Franco, Linus Hammar, Arielle I. Hoamby, Hans W. Linderholm, Liberatus D. Lyimo, Diana Perry, Lina M. Rasmusson, Samantha N. Ridgway, Gloria Salgado Gispert, Stéphanie D’Agata, Leah Glass, Jamal Angelot Mahafina, Volanirina Ramahery, Pere Masque, Mats Björk, Martin Gullström
Dynamics And Fate Of Blue Carbon In A Mangrove–Seagrass Seascape: Influence Of Landscape Configuration And Land-Use Change, Maria E. Asplund, Martin Dahl, Rashid O. Ismail, Ariane Arias-Ortiz, Diana Deyanova, João N. Franco, Linus Hammar, Arielle I. Hoamby, Hans W. Linderholm, Liberatus D. Lyimo, Diana Perry, Lina M. Rasmusson, Samantha N. Ridgway, Gloria Salgado Gispert, Stéphanie D’Agata, Leah Glass, Jamal Angelot Mahafina, Volanirina Ramahery, Pere Masque, Mats Björk, Martin Gullström
Research outputs 2014 to 2021
Context: Seagrass meadows act as efficient natural carbon sinks by sequestering atmospheric CO and through trapping of allochthonous organic material, thereby preserving organic carbon (C ) in their sediments. Less understood is the influence of landscape configuration and transformation (land-use change) on carbon sequestration dynamics in coastal seascapes across the land–sea interface. Objectives: We explored the influence of landscape configuration and degradation of adjacent mangroves on the dynamics and fate of C in seagrass habitats. Methods: Through predictive modelling, we assessed sedimentary C content, stocks and source composition in multiple seascapes (km-wide buffer zones) dominated by different seagrass communities in …
Seagrass Meadows As A Globally Significant Carbonate Reservoir, I Mazarrasa, N Marbà, O Serrano, C E. Lovelock, Paul S. Lavery, J W. Fourqurean, H Kennedy, M A. Mateo, D Krause-Jensen, A D. Steven, C M. Duarte
Seagrass Meadows As A Globally Significant Carbonate Reservoir, I Mazarrasa, N Marbà, O Serrano, C E. Lovelock, Paul S. Lavery, J W. Fourqurean, H Kennedy, M A. Mateo, D Krause-Jensen, A D. Steven, C M. Duarte
Research outputs 2014 to 2021
There has been growing interest in quantifying the capacity of seagrass ecosystems to act as carbon sinks as a natural way of offsetting anthropogenic carbon emissions to the atmosphere. However, most of the efforts have focused on the particulate organic carbon (POC) stocks and accumulation rates and ignored the particulate inorganic carbon (PIC) fraction, despite important carbonate pools associated with calcifying organisms inhabiting the meadows, such as epiphytes and benthic invertebrates, and despite the relevance that carbonate precipitation and dissolution processes have in the global carbon cycle. This study offers the first assessment of the global PIC stocks in seagrass …