Table 2.

Bacterial abundance and thymidine incorporation rates in samples collected in the spring from the Columbia River, estuary, and adjacent coastal ocean

Sample location and siteBacteria abundance (109liter−1)Thymidine incorporation rate (pmol liter−1 h−1)
MeanRangenMeanRangen
Columbia River
 1997
  Free-living0.40.2–1.04
  Particle attached1.30.9–2.14
 1996
  Free-living0.90.8–1.02
  Particle attached13.711.5–15.82
 1995
  Free-living0.30.3–0.32
  Particle attached2.22.0–2.52
Columbia River estuary
 1997
  Free-living1.80.9–3.8101.00.1–2.635
  Particle attached2.40.7–5.1107.70.3–31.735
 1996
  Free-living8.90.2–37.320
  Particle attached57.412.8–104.420
 1995
  Free-living1.40.7–2.6563.10.2–7.754
  Particle attached3.30.1–12.65638.412.0–90.154
Coastal ocean, 1997
 Free-living0.50.2–1.02
 Particle attached1.31.2–1.72