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Título : Carbon stocks and sources in Oyster Harbor (W Australia) seagrass sediments
Autor : Marbà, Núria ; Arias-Ortiz, Ariane; Masqué, Pere; Kendrick, Gary A.; Mazarrasa, Inés; Bastyan, Geoff R.; García-Orellana, Jordi; Duarte, Carlos M.
Palabras clave : Seagrass sediments
Organic carbon concentration
Organic carbon density
Sediment ƌ13C
Carbon sequestration
Revegetation
Seagrass loss
Fecha de publicación : 16-dic-2014
Citación : Carbon stocks and sources in Oyster Harbor (W Australia) seagrass sediments [Dataset], 2014
Resumen: This dataset contains the values of ƌ13C, concentration and density of organic carbon measured along sediment cores collected where seagrasses (Posidonia australis) where lost, in re-vegetated plots and the continuously vegetated meadow at Oyster Harbor.
Descripción : In March 2012 we collected 3-replicated sediment cores (9 cm diameter and 12-15 cm long) per restored site along the planting chronosequence (i.e. years 1994, 1997, 2003, 2004, 2006). Similarly, we collected 3 sediment cores in two bare sites, previously colonized by seagrasses, and in a large seagrass patch that survived the disturbances in the second half of the 20th Century that we considered a mature and thus reference meadow. We measured sediment bulk density and organic matter content and carbon stocks along all sediment cores sliced at 1 cm interval. Organic carbon content (% Corg) was estimated from loss of ignition (% LOI) at 550ºC for 5 h using the empirically fitted equation for Oyster Harbour sediments,Log % Corg = -0.62 + (1.33 * Log % LOI) SEintercept = 0.01, SEslope =0.10, N = 55, R2 = 0.77, P<0.0001 We analyzed the ƌ3C of the organic carbon in the top 3 cm sediment layer (ƌ13Csediment) along the chronosequence to estimate the fraction of seagrass (X) and sestonic (1-X) deposition as ƌ13Csediment = [X . Log % Corg = -0.62 + (1.33 * Log % LOI) SEintercept = 0.01, SEslope =0.10, N = 55, R2 = 0.77, P<0.0001 We analyzed the ƌ3C of the organic carbon in the top 3 cm sediment layer (ƌ13Csediment) along the chronosequence to estimate the fraction of seagrass (X) and sestonic (1-X) deposition as ƌ13Csediment = [X . ƌ13Cseagrass] + [(1-X) . ƌ13Cseston] being ƌ13Cseagrass -9.65 ‰ and ƌ13Cseston -22 ‰ (Dauby 1989).
Access and reuse: This dataset is subject to a Creative Commons Reconocimiento-NoComercial-CompartirIgual 4.0 Internacional License.
URI : http://hdl.handle.net/10261/108758
DOI: http://dx.doi.org/10.20350/digitalCSIC/7095
Referencias: Marbà, N., Arias-Ortiz, A., Masqué, P., Kendrick, G.A., Mazarrasa, I., Bastyan, G. R., Garcia-Orellana, J, Duarte, C. M. Impact of seagrass loss and subsequent re-vegetation on carbon sinks and stocks, Journal of Ecology (Accepted).
Aparece en las colecciones: (IMEDEA) Conjuntos de datos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Marba_et_al_Oyster_Harbor_dataset.xlsxDataset35,56 kBMicrosoft Excel XMLVisualizar/Abrir
Values_description_dataset_Oyster.xlsxValues description9,14 kBMicrosoft Excel XMLVisualizar/Abrir
Marba_et_al_Oyster_Harbor_dataset.csvDataset33,55 kBCSVVisualizar/Abrir
Readme_Carbon_stocks_dataset.txt2,12 kBTextVisualizar/Abrir
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