512 Subject Index 



benthic algae, 352 



benthic animals, 352 



in model, 434 



lake vs. pond, 94 



midges, 31 



roots, 96, 352 



sediment, 100, 364 



soils, 41 



temperature effects, 14 

 Resuspension, bacteria, 341 

 Retranslocation, 233 

 Rhodomonas minuta, 14, 



179-180, 185, 188, 190, 

 221-222, 400 

 Rhizopods, 377 



Rivers, northern Alaska, Ili-IA 

 Rooted plants. See Plants 

 Roots 



ammonia uptake, 

 109 biomass, 38 



Carex, 228-229 



oxygen affects, 109 



P uptake, 136, 239 



production, 38 



respiration, 352 

 Rotifers, 251, 375 

 Runoff 



Barrow watersheds, 36 



description, 35 



measurement, 63 



ponds, 36 



seasonal pattern, 65 



Secretion, in model, 430 

 Sediments 



algal control, 13, 213 



biomass, 8 



bioturbation, 221, 297 



buffer P, 150 



bulk density, 77 



control, 373 



control P, 13, 213 



control photosynthesis, 13, 

 213 



description, 76 



disturbance by animals, 221, 

 297 



freezing, 61 



light extinction, 71, 198 



midge distribution, 315 



midge habitat, 303 



N concentrations, 102, 115, 

 238 



nutrients in plant beds, 238 



organic matter, 78, 362 



oxygen diffusion, 371 



P concentrations, 136, 141 



particle size, 76, 373 



protozoan carbon flux, 378 



release DUP, 132 



respiration, oil pond, 395 



source of DOC, 153 



temperature, 57 



thaw depth, 61 



thaw-lake cycle, 37 

 Sediment respiration 



animal effect, 369 



compared to evasion, 367 



nutrient effect, 369 



particle size effect, 372 



rate, 364 



seasonal pattern, 366 



temperature effect, 364, 367 



transect, 364 

 Sedimentation rate, 166 

 Seston 



composition, 290 



zooplankton effects, 290 

 Shredders, 301 

 Silica 



controls diatoms, 223 



dissolved, 82, 84 

 Snails. See Physa, 303 

 Snow 



affects ice-melt, 60 



amount, 32, 33 



extinction coefficient, 33 

 Snowmelt, description, 33 



