Unit NPP Total NPP ocean total upwelling open ocean coastal - PDF document

Unit NPP Total NPP ocean total upwelling open ocean coastal ocean coastal ocean open ocean upwelling terrestrial total wetland cultivated tropical wet tropical Biome forest savannah tropical wet cultivated forest temperate boreal forest forest tropical dry temperate forest forest tropical temperate savannah steppe tropical dry boreal forest forest temperate wetland steppe tundra tundra desert desert 0 200 400 600 800 1000 1200 1400 1600 0 10 20 30 40 50 60 70 80 NPP (g C/m 2 /yr) NPP (Pg C/yr)

100 . 001 . 001 a ) D EPT H b ) A GE c ) PO R OSITY 2 = 0 . 559 2 = 0 . 328 2 = 0 . 194 r r r 90 . 01 80 . 01 70 . 1 P o r o s i t y ( % ) D e p t h ( m b s f ) 60 . 1 ya ) A g e ( m 50 1 40 1 10 30 20 10 100 10 0 1000 100 0 2 4 6 8 0 2 4 6 8 0 2 4 6 8 10 10 12 10 12 12 L og 10 b ac t e r i a l n u m b e r s L og 10 b ac t e r i a l n u m b e r s L og 10 b ac t e r i a l n u m b e r s ( ce ll s / c m 3 ) ( ce ll s / c m 3 ) ( ce ll s / c m 3 ) L og a od c = 0 . 28 + 3 . 80 log po r o s i t y L og a od c = 7 . 98 - 0 . 57 log d e p t h L og a od c = 6 . 93 - 0 . 4 log a g e r 2 = 0 . 194 n = 736 t = 13 . 29 ( P<< 0 . 001 ) r 2 = 0 . 559 n = 822 t = 32 . 24 ( P<< 0 . 001 ) r 2 = 0 . 328 n = 536 t = 16 . 13 ( P<< 0 . 001 ) J. Parkes, B. Cragg, & P. Wellsbury (2000) Recent studies on bacterial populations and processes in subseafloor sediments: A review. Hydrogeology Journal 8 , 11-28.