View Abstract

CONCEPTS AND REFLECTIONS ON SEAGRASS BLUE CARBON: THE POSIDONIA OCEANICA PARADIGM

Some seagrasses can channel organic carbon to the sediments very efficiently (over 500 gC sq m/yr), building massive stocks (over 1t/sq m) that persist for hundreds, thousands, or tens of thousands of years. These treats define the ideal carbon sink. In a scenario of a continuous increase of anthropogenic carbon dioxide emissions, governments, managers and scientists are becoming increasingly interested in seagrasses as biospheric carbon sinks, creating a fertile ground for the generation of a wealth of data of rates and stocks. The high diversity of conceptual and methodological approaches behind the numbers, often hampers meaningful comparisons and global estimates. In this presentation we use the paradigmatic Mediterranean endemic seagrass Posidonia oceanica to (1) reflect on some key concepts, uncertainties, and limitations in the field such as the carbon source to the sink, the role of carbonates, the species-specific and spatial variability, the field methods, or the short and long-term dynamics of the organic deposits and of the ecosystem, and (2) to provide the most up to date estimates of the carbon stocks and fluxes associated to this species.

Authors

Mateo, M. A., Consejo Superior de Investigaciones Científicas & Edith Cowand University, Spain, mateo@ceab.csic.es

Serrano, O., Edith Cowan University & Consejo Superior de Investigaciones Científicas, Australia, o.serranogras@ecu.edu.au

Lavery, P. S., Edith Cowan University & Consejo Superior de Investigaciones Científicas, Australia, p.lavery@ecu.edu.au

Belshe, F., Consejo Superior de Investigaciones Científicas, Spain

Piñeiro, N., Consejo Superior de Investigaciones Científicas & Universidad de Santiago de Compostela, Spain

Leiva, C., Consejo Superior de Investigaciones Científicas, Spain, cleiva@ceab.csic.es

Martínez-Cortizas, A., Universidad de Santiago de Compostela & Consejo Superior de Investigaciones Científicas, Spain, antonio.martinez.cortizas@usc.es

Details

Oral presentation

Session #:038
Date: 03/02/2017
Time: 15:15
Location: 313 B

Presentation is given by student: No