SUBJECT INDEX 



389 



Lettuce, 253 



ijsmotic value, 280, 281 



osmotic value and yield, 277, 283 



radiation and growth, 250 



water lack, 282-283 



water use and growth, 251, 252, 255 



Lichen, 225 



in relation to snow cover in Alps, 



160 



Ligtistrtim lucidtnn, photosynthesis, 367 



Loendal (Denmark), soil moisture in 

 spruce stand, 151 



temperature and rainfall, 142-143 



Loiselenria proaitubeits, injury delay and 

 drought stress, 165 



water absorption, 166 



water content, 165 



Loiseleurietum, distribution in relation 

 to snow cover in Alps, 160 



Lycium, 221 



Lycopsis arvcnsis, 183 



Lysimeter, 42 



used to measure potential evapora- 

 tion, 10- 1 1 



Maple, growth, 369 



removal of water from soil, 369 



Marram grass, 183 



transpiration, 183 



Matric potential, 57, 61 



Mediterranean chamaephytcs, 206-221 



Melon, 54 



Meniscus as semi-permeable membrane, 

 57,60 



Mesquite, cessation of growth, 371 



Meteorological data in relation to 

 plant climate, 8 



Mitscherlich equation, 326-328, 330 



Moltkia callosii, root penetration, 204 



Montpellier (France) dew collectors, 

 45-46 



dewfall, 43 



Moor House Nature Reserve, Westmor- 

 land, 17 



Moravia, dewfall, 43 



psammophytes, 190-198 



Mpscow, dewfall, 43 



Munich, dewfall, 43 



Negev, Dewfall, 46 



rainfall, 207 



stone heaps as dew-collectors, 45 



Netherlands, ground-water depth and 



crop yield, 334, 335, 336 

 New England, 368 

 New Forest, 324 

 Nicotiatm sanderae, photosynthesis and 



respiration, 226-233 



stomatal size, 228, 230, 231 



Noca mucrouata, 207 



life cycle, 212 



seasonal body reduction, 215 



transpiration, 217 



weight of transpiring body, 213, 



216 

 Norway, potential water deficit, 15, 



16 



Oak, 263, 265, 266, 267, 268, 271 



-drought damage in Denmark, 152 



growth, 370 



penetration of gley horizon by 



roots, 371 



radial growth, 369 



(see also under Qxiercus) 

 Oats, cropping patterns, 360, 361, 363, 



364 



evaporation, 29 



osmotic value and yield, 276, 



278, 283 

 Obergurgl, chmate, 154 



precipitation, 158 



snow cover, 160 



Odessa, 6 



climatic diagram, 4 



Olca ciiropca, average saturation deficit, 



53-54 

 Orchis practemiissa, 182 

 Onion, stomatal closure, 185 

 Osmotic potential, 58 

 Osmotic value, 273-281, 283, 284 



determination, 275 



pine needles, 163 



and yield, 275, 276 



Otztal, precipitation, 158 



Oxford, throughfall in spruce woodland, 



127-140 



