Table 2.

Relative decay rates and conversion to ln(CT/C0) from previously reported studies and this studya

TargetTemp (°C)Salinity (‰)Relative decay rate with constant lightDecay rate conversion to ln(CT/C0) day−1 in the darkReference
Fecal Bacteroidetes13b0−0.9701This study
Human13Freshwater−1.7−1.439
Human13Freshwater−1.4−1.239
Cow13Freshwater−0.8−0.639
Cow13Freshwater−1−0.9939
All Bacteroides13cFreshwater−0.41768
Bac-Pre13d0−0.944129
Human-Bac13d0−0.867229
Cow-Bac213d0−0.999829
Bacteroidales∼12∼33−0.3693−0.46734
Human∼12∼33−0.3269−0.5434
Cow∼12∼33−0.33114
Fecal Bacteroidetes12e30−0.2331This study
Human∼1734.2−1.3−0.26440
Fecal Bacteroidetes17e30−0.3611This study
qHF18325Freshwater−2.6931−2.13216
BacHum25Freshwater−2.9904−2.646616
AllBac25Freshwater−1.8059−1.40416
Fecal Bacteroidetes25b0−1.2425This study
qHF18315Freshwater−1.820216
BacHum15Freshwater−1.959616
AllBac15Freshwater−1.686916
Fecal Bacteroidetes15b0−1.0155This study
qHF18325Freshwater/sediment−2.449616
BacHum25Freshwater/sediment−2.21416
AllBac25Freshwater/sediment−1.037216
  • a Decay rates were converted to ln(CT/C0) day−1 when necessary.

  • b Temperature effect adjusted by 3-point linear regression at 0‰ salinity: y = −0.0227 × −0.675; R2 = 0.8913.

  • c Temperature effect adjusted by the linear temperature model of Bell et al. (8).

  • d Temperature effect adjusted by using the original decay rates of log10 copies day−1 before conversion to ln(CT/C0) with temperature-dependent data presented by Okabe and Shimazu in Table 1 in reference 29 showing the following results: Bac-Pre, y = 0.2693 ln(x) − 0.3141, R2 = 0.9936; Human-Bac, y = 0.3247 ln(x) − 0.3986, R2 = 0.9901; and Cow-Bac2, y = 0.3356ln(x) − 0.4463, R2 = 0.9622.

  • e Temperature adjusted by using a 2-point linear fit at 30‰ salinity with y = −0.0256x + 0.0741.