Seagrasses of Australia by Unknown

Seagrasses of Australia by Unknown

Author:Unknown
Language: eng
Format: epub
ISBN: 9783319713540
Publisher: Springer International Publishing


Fig. 13.10Seagrass-derived sediment detoxification as a result of below-ground tissue radial O2 loss into the immediate rhizosphere. Concentration profiles of O2, H2S and pH were measured with microelectrodes in darkness (black profiles), at an incident photon irradiance of 260 (blue profiles) and 350 (green profiles) μmol photons m−2 s−1, and in darkness with hypoxic conditions in the water-column (red profiles). Upper panels represents measurements at the basal leaf meristem with leaf sheath , intermediate panels (horizontally) at the root-shoot junction and lower panels at the rhizome . Left panels represent the immediate rhizosphere O2 concentration, intermediate panels (vertically) represents the immediate rhizosphere H2S concentration and right panels represents the immediate rhizosphere pH . Y = 0 indicate the below-ground tissue surface. Error bars are ±SD. n = 2–4. Note the break on the x-axis of panels illustrating the immediate rhizosphere H2S concentration. The illustration of Z. muelleri spp. capricorni originates from the IAN/UMCES symbol and image libraries (Diana Kleine, Integration and Application Network (IAN), University of Maryland Center for Environmental Science (ian.umces.edu/imagelibrary/)). Data modified from Brodersen et al. (2015b). Copyright 2015 John Wiley & Sons Ltd.



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