392 



INDEX 



Respiration 

 forest, 345, 360 

 of autotrophs in, 360 

 of heterotrophs in 357-358,360 

 of woody tissue in, 357 

 of yellow poplar in, 354 



of herbivores, 358 

 plant, 284 *■ 

 terrestrial, 319 



Sargasso Sea, 193 



Scripps Institution of Oceanography, 53, 



371 

 Sea-floor spreading, 2 

 Sedimentation 

 as related to carbonate solubility in 



oceans, 373 

 rate in estuaries, 221 

 Sediments, carbon in 

 in estuaries, 233-234 

 in oceans, 33, 36 

 Sharp's method of measuring DOM in sea- 

 water, 208 

 "Short— long needle syndrome," 181 

 Silica in the ocean, 35, 38 

 Soil— plant— atmosphere model (SPAM), 



85, 343 

 Solar activity, correlation with radiocarbon, 



61,63-64 

 South Pole, atmospheric C0 2 at, 51, 53 



60 

 Species interactions, forest, 341 

 Standing crop in a forest, 360-362 

 Stomata uptake of atmospheric S0 2 , 166 

 Study of Critical Environmental Problems 



(SCEP). 371, 377, 380 

 Study of Man's Impact on Climate 



(SMIC), 371 

 Subduction zone, world, 2 

 Suess effect, 91, 371 

 model corrections for, 91, 97-98, 100- 



102, 104-106, 112 

 tree-ring data as measurement of, 91 

 Sulfate(s) 

 fertilizer, 188 



1 8 O- ' 6 O ratio in seawater ,187 

 in rainwater, 188 

 reduction of, 160, 184 

 34 S concentration in oceans, 188-189 



Sulfur 

 in the atmosphere, 163-164 

 circulation of, 160-161 

 forms of, 160 



removal of, 160, 162-164, 167-173 

 residence time, 161, 162 

 sources of, 160-161, 163, 164, 173- 

 177, 185-186 

 in freshwater, 185 

 industrial, 187-188 

 in rainwater, 187-188 

 Sulfur bacteria, 184 

 Sulfur dioxide in the atmosphere, 

 removal of 

 absorption by soils, 164, 166 

 absorption by vegetation, 164-167 

 deposition velocity, 164-166 

 Sulfur metabolism, global, 187 

 Sunspot activity, 63-64 

 Sunspot numbers, from 1500 to 1960, 134 

 correlation with cosmic-ray intensity, 63 

 records of, 61 

 Swamps, dry organic matter in, 146 



Temperature decrease in the atmosphere, 

 31 



Terrestrial respiration, 319 



Thermocline, 100 



Trace gases in the atmosphere, 371-372 



Translocation of carbon in forest trees, 

 360-361 



Tree-ring data, 74, 91, 96 

 as measurement of Suess effect, 91 



Trees (see Forests) 



Tritium in atmospheric CH 4 and formalde- 

 hyde, 154 



Ultraplankton, 213 



Volcanic action as a source of CO, 1 38 



Wet oxidation method for determining 



organic carbon, 207 

 Wetlands (see Estuaries) 



Zones of crustal convergence, carbon in, 2 



■fr U. S. GOVERNMENT PRINTING OFFICE: 1973 744-378 



