caa a22 4500 475751566 CHVBK 20180406123525.0 cr unu---uuuuu 170329e20000601xx s 000 0 eng 10.1023/A:1009847628243 doi (NATIONALLICENCE)springer-10.1023/A:1009847628243 Different phenotypic response of Halimium halimifolium in relation to groundwater availability [Elektronische Daten] [M. Zunzunegui, M.C. Díaz Barradas, F. García Novo] Halimium halimifolium (Cistaceae) is a shrub occurring on sandy substrates in the Mediterranean region and is the principal element of the sandy vegetation in Doñana National Park (S.W. Spain). The annual cycles of leaf water potential, stomatal resistance and shoot growth were studied in permanently marked H.halimifolium plants. Three sites with different water availability at the stabilized sands of the Park - Monte Blanco (MB, top of the dunes), Monte Negro (MN, depressions) and Monte Intermedio (MI, slopes of dune ridges) - were chosen. The study was carried out during a period of extreme drought. MN individuals showed the greatest growth, both in main shoot and in ramets, less negative water potential values and lower stomatal resistance values than the other two areas, because individuals' roots could reach the water table all year long. In winter there were no differences in predawn, midday and sunset water potential or in stomatal resistance values in the three areas. In summer, MI individuals showed the most negative water potentials and the highest stomatal resistance, although they occupied an intermediate position in the water table depth gradient. Under drought conditions MI individuals are the most affected, because they are acclimated to use ground water during the growth period, while MB individuals, that never reach the water table, are acclimated to use found surface water and are, thus, better adapted to water scarcity. Kluwer Academic Publishers, 2000 Annual cycle nationallicence Drought tolerance nationallicence Growth nationallicence Stomatal resistance nationallicence Water potential nationallicence Zunzunegui M. Departamento de Biología Vegetal y Ecología. Facultad de Biología, Universidad de Sevilla. Apartado 1095, 41080, Sevilla, Spain aut Díaz Barradas M.C. Departamento de Biología Vegetal y Ecología. Facultad de Biología, Universidad de Sevilla. Apartado 1095, 41080, Sevilla, Spain aut García Novo F. Departamento de Biología Vegetal y Ecología. Facultad de Biología, Universidad de Sevilla. Apartado 1095, 41080, Sevilla, Spain aut Plant Ecology Kluwer Academic Publishers 148/2(2000-06-01), 165-174 1385-0237 148:2<165 2000 148 11258 https://doi.org/10.1023/A:1009847628243 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1009847628243 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zunzunegui M. Departamento de Biología Vegetal y Ecología. Facultad de Biología, Universidad de Sevilla. Apartado 1095, 41080, Sevilla, Spain aut NATIONALLICENCE 700 1- Díaz Barradas M.C. Departamento de Biología Vegetal y Ecología. Facultad de Biología, Universidad de Sevilla. Apartado 1095, 41080, Sevilla, Spain aut NATIONALLICENCE 700 1- García Novo F. Departamento de Biología Vegetal y Ecología. Facultad de Biología, Universidad de Sevilla. Apartado 1095, 41080, Sevilla, Spain aut NATIONALLICENCE 773 0- Plant Ecology Kluwer Academic Publishers 148/2(2000-06-01), 165-174 1385-0237 148:2<165 2000 148 11258 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer