Naslov
Separate and Combined Effects of Solar Radiation, temperature, salinity, and pH on the Survival of faecal Coliforms in Seawater
(Radiation, temperature, salinity, and pH on the Survival of faecal Coliforms in Seawater)

Autori
Šolić, Mladen ; Krstulović, Nada

Izvornik
Marine Pollution Bulletin (0025-326X) 24 (1992), 8; 411-416

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
survival of faecal coliforms; temperature; solar radiation; seawater

Sažetak
The presence of sunlight was the major factor controlling the survival of faecal coliforms (FC) in seawater. The responses of FC survival to intesity of solar radiation, temperature and salinity were inversely proportional. The optimum pH for FC survival was between ph 6 and pH 7 with rapid decline both above and below these values. The combined effect of solar radiation and temperature on the survival of FC was expressed by multiple linear regression. The coefficients of partial correlation and beta coefficients which are used in determing the relative importance of solar radiation and temperature, suggest that variations in solar radiation have more effect than variations in temperature in bringing about changes of T90 (time required for a 90% reduction in bacterial number) for FC. The increase of temperature and salinity was more detrimental to FC survival in the presence of sunlught suggesting that the sunlight may have acted synergistically with temperature or salinity.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA