Table 1.

Distribution of thresholds of hypoxia for different groups of benthic organisms

OrganismsLC50, mg O2/literSLC50, mg O2/literLT50, h
Fish
    Mean ± SE1.54 ± 0.074.41 ± 0.3959.9 ± 12.3
    90th percentile2.518.090.9
    n773439
Crustaceans
    Mean ± SE2.45 ± 0.143.21 ± 0.2855.5 ± 12.4
    90th percentile5.725.01.0
    n16830102
Gastropods
    Mean ± SE0.89 ± 0.11
    90th percentile1.62
    n12
Bivalves1.42 ± 0.14
    Mean ± SE
    90th percentile3.43
    n19
Molluscs
    Mean ± SE1.99 ± 0.16412.9 ± 37.3
    90th percentile2.8355.4
    n28239
Annelids
    Mean ± SE1.20 ± 0.25132.2 ± 18.7
    90th percentile1.3737.8
    n1043
Echinoderms
    Mean ± SE1.22 ± 0.22201.1 ± 44.8
    90th percentile2.1233.6
    n823
Cnidarians
    Mean ± SE0.69 ± 0.11232.5 ± 114.4
    90th percentile1.4324
    n198
Priapulids
    Mean ± SE1512.0 ± 684.0
    90th percentile820.8
    n3
  • Shown are mean ± SE, 90th percentile (10th percentile for lethal times), and number of observations of LC50, SLC50, and LT50 for the various groups.