W

Waal warm period 474 Walker Box 213 wall

- labyrinth 177

- pressure 119p, 122

- pressure potential 122 walnut tree, Juglans regia 607 Walter's law of the relative consistency of habitat 549 warm period 476p waste remediation 192 water

- activity 283

- atmosphere 633

- availability 280, 297

- balance 254

- balance of the cell 283p

- boiling point 118

- channels 288

- clusters 80, 117p

- conducts 279

- consumption 277, 426

- content 277

- cycle (internal) of a plant 296p

- cycle, global 633pp

- deficiency 117-143

- dipol 117

- environmental factor 277-313

- flows, intracellular 119

- flux 292

- freezing 72pp

- from clouds 426

- from xylem, deuterium isotopic ratio 287p

- gradient 303

- hygroscopically bound 283

- line, hydraulic 286

- mean residence time (MRT) 633p

- melting point 118

- molecules anomalies 117pp

- nitrate content 638

- oxidase 183

- parasites 342p

- pore 121

- photosynthesis 365

- relations 277-313

- saturation 256

- saturation deficit 256

- saving 303pp

- seepage 280

- soil, available for plants 284

- status 288

- status, stomatal opening 299, 301pp

- storage 121p, 277pp

- surface tension 284

- turnover 426

- uptake 283-297

- use efficiency 136, 142, 358

- vapour 256

- partial pressure 279

water potential 79pp, 96, 118, 122, 140, 282p, 299p, 365

- gradient 140, 297

- leaf 300

- xylem 294

water transport 283-303

- phloem 295

- xylem 292-295 watershed 400

wax, degradation 432 weather 417 weathering 583 weeds, arable fields 486 Weichsel cold period 474 Weinmannia 449 Welwitschia mirabilis 271p, 550 wet bulb temperature 256 wet nurse plants 618p wheat 152, 187, 196p, 201, 267, 382, 482

- aluminium resistance 204

- ozone sensitivity 227

- salt stress 146 white rot, fungus 431 willow 111,597 wilting 119p

- point, permanent 285p wind

- and dunes 582p

- barriers protective 582p

- damage 418

- shear 582p winter

- annual 381, 512

- cereals 481

- flounder 84

- germination 47

- rainfall 287p

- antifreeze protein 83 witch hazel, Hamamelis virginiana 45 Withania somnífera 500 wood 427

- anemone 510

- borers 595

- ring-porous 293 wooden hook plough 482 woodland degradation 500p woody growth 331 woody plants 387

World Bank 629p

World Climate Research Programme

(WCRP) 629 World Heritage Sites 673p World Meteorological Organisation (WMO) 629

World Trade Organisation

(WTO) 629 wound reaction 238 wounding 250 Würm glaciation 472

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