TABLE 2.

Microbial biomass and bacterial abundance in sediments of nine streams

Biome and stream	PLP (nmol g−1 dry wt)a	% Eukaryotic/ prokaryoticb	Bacterial abundance (g−1 dry wt)
			Calculatedc	Epifluorescence microscopy countsd
Southeastern coniferous
McDonalds Branch	2,475.78 ± 1003.42	39/61	9.90 × 1010	6.25 × 1010 ± 4.67 × 1010
Shinns Branch	3,339.24 ± 1743.16	24/76	1.34 × 1011	7.19 × 1010 ± 3.41 × 1010
Mount Misery	1,608.03 ± 576.78	16/84	6.43 × 1010	6.22 × 1010 ± 1.76 × 1010
Eastern deciduous
White Clay Creek	36.09 ± 5.45	61/39	1.44 × 109	6.90 × 109 ± 2.35 × 109
Birch Run	164.44 ± 115.39	56/44	6.58 × 109	4.29 × 1010 ± 2.20 × 1010
West Creek	70.18 ± 45.86	26/74	2.81 × 109	1.64 × 1010 ± 1.32 × 1010
Tropical evergreen
Rio Tempsiquito	48.78 ± 3.23	12/88	1.95 × 109	8.43 × 109 ± 1.36 × 109
Rio Tempisquito Sur	21.46 ± 7.84	18/82	8.58 × 108	6.57 × 109 ± 2.78 × 109
Quebrada Katia	35.37 ± 15.87	12/88	1.41 × 109	7.27 × 109 ± 2.62 × 109

^aMean ± standard deviation (n = 3).

^bPercentage that microeukaryotes comprise of total microbial biomass, calculated from PLFA profiles (mean of three replicate samples).

^cCalculated from PLP × % prokaryotic (expressed as a decimal fraction) and the conversion factor given in reference 3.

^dMean ± standard deviation (n = 3).