564 



Index 



control on nitrogen fixation, 



236-239 

 influence on vegetation, 

 121-122, 186-187, 

 202-206, 217 

 Enzyme activity, 303 

 Ermine density, 366 

 Evapotranspiration, 51, 53-55, 

 61-62, 80, 91-93 

 see also Transpiration 



Fertilization 



effect on lemming reproduc- 

 tion, 382 



root-to-shoot ratio, 155 

 Flooding 



lemming habitat, 371 

 Fog, 34 



Foliage area index, 209 

 Foothills Province 



geographic description, 3 

 Forage 



nutrient content, 356-357 



see also Grazing 

 Forbs 



growth form, 194 

 Freeze-thaw, 252, 267 

 Freeze-up, 64 

 Fungi, 333 



biomass distribution, 268-269 



concentration on polygons, 

 421 



decomposition, 473 



density, 271 



diet of nematodes, 414 



distribution, 255-256, 268, 

 272-276 



growth, 299-302 



influence of moisture, 286-287 



influence of phosphorus, 

 282-284 



influence of substrate, 281-282 



influence of temperature, 

 284-285 



numbers, 260 

 oil spills, 215 

 production, 278-280 

 respiration, 299-302 

 species diversity, 260-262 

 taxonomic structure, 264-266 

 utilization of substrate, 



295-297 

 see also Microbial activity 



Geology 



Barrow area, 14-16 

 Geomorphology 



Coastal Plain, 3-4, 14-16 

 Graminoids 



carbohydrate content, 161 



growth form, 105, 194 



growth patterns, 141-148, 

 181-184 



nutrients, 171-172 



production, 144, 148 

 Grazing 



allocation, 177-181 



caribou, 386 



limit on CO2 uptake, 103 



photosynthesis, 119, 134 



plant production, 178 

 Growth forms, 217 



characteristics, 186-188, 200 



definition, 194 



distribution, 195-199 



photosynthesis, 105 



species diversity, 199-200 

 Growth patterns 



Dupontia, 163-164 



graminoids, 141-148 



Herbivores, 409 



birds, 336 



brown lemmings, 337-384 



mammals, 337 



Prudhoe Bay, 384-385 

 Hydrology, 51-65 



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