SUBJECT INDEX 



391 



Potential water deficit and surplus, 10-18 



at Achnagoichan, 12 



in Scotland, 15 



Potentilla anscrina, 183 

 Poterium spinosum, 207 



life cycle, 209-210, 211 



seasonal body reduction, 215 



transpiration, 217, 218 



weight of transpiring body, 



214, 216 

 Potsdam, temperature gradient in soil, 79 

 Precipitation, Distribution: in Alps, 



157-158 



in spruce stand, 1 15-125, 127- 



140 



Precipitation distribution above wood- 

 land, 136-138, pi. I. 



Pmmis avium, killed by flooding, 372 



Primus padus, 289 



drought resistance, 302-308 



growth, 290-296, 299, 309, 



310 



transpiration, 296-302, 303, 



309 

 Prwuis spiiiosa, 265 

 Psammophytes, in Czechoslovakia, 190- 



198 

 Puerto Rico, dwarf rain forest, 373 

 Pyms communis, 265 



Qticicus alba, radial growth, 369 



Qucicus borealis, growth, 370 



roots penetrating gley hori- 

 zon, 371 



Qucrcus cerris, 265, 271 



assimilation, 266, 267 



growth, 263 



transpiration, 267 



Quercus petraea, growth, 313-324 



Qucrcus robtir, 371 



assimilation, 266, 268 



drought damage in Den- 

 mark, 152 



killed by flooding, 372 



transpiration, 268 



Radiation, 3 



at Obergurgl, 155, 156 



Radiation, at Wien, 155, 156 



in relation to growth, 248-251 



Radiometers, 22 



Radish, 253 



radiation and growth, 250 



water use and growth, 251 



Rape, water saturation deficit, 103, 107 



wilting, 108 



Remscheid Dam (Germany), precipita- 

 tion in drainage area, 81 



Revivim, rainfall, 207, 213 



Rhizoctoiiia, on sugar beet. 341 



Rhododendetum ferruginei, distribution 

 in relation to snow cover in Alps, 160 



Rliododetidnvi ferrugineum, injury delay 

 and drought stress, 165 



water content, 165 



water loss, 166 



Ribcs sanguineum, water movements in 

 leaf 90-93 



Richardson number, 20, 21, 27, 28, 29, 30 



Robiiiia pseudoacacia, killed by flooding, 



372 

 Rocky Mountains, growth of young 



conifers, 370 

 Rosenholm (Denmark), soil moisture 



in spruce stand, 148 



soil profile, 149 



Rostock (E. Germany), soil moisture, 81 

 Rothamsted, absorption of water vapour 



by soil, 52 



dewfall and distillation, 49 



growth of sugar beet, 340-354 



weather, 342-343 



Rumania, dewfall, 43 



Rye, cropping pattern, 356, 359, 360, 



361, 362, 363, 364 



Salix atrocinerea, 182 



transpiration, 183 



Salix interior, growth and flooding, 372 

 Salix nigra, growth and flooding, 372 

 Salix purpurea, growth, 370 

 Sand dune plants, 168-187 

 Sarcostemma australis, 205 

 Saxifraga liypnoides, 289 



drought resistance, 302-308 



growth, 290-296, 310 



