caa a22 4500 46316086X CHVBK 20180406164747.0 cr unu---uuuuu 170326e20070601xx s 000 0 eng 10.1007/s10535-007-0085-x doi (NATIONALLICENCE)springer-10.1007/s10535-007-0085-x Changes in spectral reflectance of a foliar lichen Umbilicaria hirsuta during desiccation [Elektronische Daten] [J. Gloser, V. Gloser] Water potential (ψw) and water saturation deficit (WSD), and several reflectance (R) indexes were assessed in an aerophytic lichen Umbilicaria hirsuta (Sw. ex Westr.) Hoffm. The water index (WI, R900/R970) and normalized difference vegetation index, NDVI [(R900-R680)/(R900+R680)] were strongly correlated both with the ψw and the WSD of lichen thalli. No significant changes during desiccation were found in structural independent pigment index, SIPI [(R800-R445)/(R800-R680)]. Sensitivity of the spectral detection of water status was rather small at high hydration level (WSD < 25 %, or ψw > −1 MPa), but this is not much limiting its value and potential use, because physiological processes in lichens are usually inhibited at much lower values of ψw than in leaves of vascular plants. Institute of Experimental Botany, ASCR, 2007 reflectance indexes nationallicence upper cortex nationallicence water deficit nationallicence water potential nationallicence NDVI : normalized difference vegetation index nationallicence NIR : near infrared radiation nationallicence R : reflectance nationallicence SIPI : structural independent pigment index nationallicence WI : water index nationallicence WSD : water saturation deficit nationallicence ψw : water potential nationallicence Gloser J. Department of Plant Physiology and Anatomy, Faculty of Science, Masaryk University in Brno, Kotlář ská 2, CZ-61137, Brno, Czech Republic aut Gloser V. Department of Plant Physiology and Anatomy, Faculty of Science, Masaryk University in Brno, Kotlář ská 2, CZ-61137, Brno, Czech Republic aut Biologia Plantarum Kluwer Academic Publishers-Consultants Bureau 51/2(2007-06-01), 395-398 0006-3134 51:2<395 2007 51 10535 https://doi.org/10.1007/s10535-007-0085-x text/html Onlinezugriff via DOI 1 brief-communication jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10535-007-0085-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gloser J. Department of Plant Physiology and Anatomy, Faculty of Science, Masaryk University in Brno, Kotlář ská 2, CZ-61137, Brno, Czech Republic aut NATIONALLICENCE 700 1- Gloser V. Department of Plant Physiology and Anatomy, Faculty of Science, Masaryk University in Brno, Kotlář ská 2, CZ-61137, Brno, Czech Republic aut NATIONALLICENCE 773 0- Biologia Plantarum Kluwer Academic Publishers-Consultants Bureau 51/2(2007-06-01), 395-398 0006-3134 51:2<395 2007 51 10535 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer