EFFECTS OF SALINITY ON BACTERIOPLANKTON - FIELD AND MICROCOSM EXPERIMENTS

• Type: Article in International Scientific Journal
• Date: 1993

Authors

Adriano Bordalo (Author) ICBAS

Journal

Title: Journal of Applied Bacteriology

Vol. 75

Pages: 393-398

ISSN: 0021-8847

Publisher: Blackwell

Indexing

ISI Web of Knowledge - 16 Citations

Scopus - 15 Citations

Other information

Authenticus ID: P-001-MKV

DOI: 10.1111/j.1365-2672.1993.tb02793.x

Abstract (EN): Bacterial populations in a tidal estuary were monitored with the aim of investigating (i) the relationship between planktonic bacteria and salinity and (ii) the survival of allochthonous bacteria in microcosm experiments at different salinities. With the increase in salinity, bacterial numbers decreased in a curvilinear fashion, rather than monotonically. Maximal abundance for different bacterial groups was found between 7 and 22 parts per thousand S. The salinity alone explained between 19 and 58% of bacterial variability. In microcosm experiments the adverse effect of salinity on the survival of freshwater bacteria and indicators of faecal contamination was particularly important. In freshwater and low salinity experiments grazing by protozoans had similar effects on the survival of allochthonous bacteria.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6