Surface Concentration of Marine Bacteria1

Bezdek, H. F.; Carlucci, A. F.

doi:10.4319/lo.1972.17.4.0566

Cited by 88 publications

(49 citation statements)

References 5 publications

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“…Such differences in attachment ef-ficiency should be reflected in differences in the jet drop concentration factor. They were found by Bezdek andCarlucci (1972), Hejkal(1976), and in some of our unpublished studies with mixed suspensions of S. marcescens and E. coli.…”

Section: Increasingsupporting

confidence: 63%

Seven problems in bubble and jet drop researches 1

Blanchard

Syzdek

1978

Limnology & Oceanography

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Four of the problems deal with the mechanics of bubble production and bursting, and the collection and sizing of jet drops; three concern the transfer of the bacterium Serratia marcescens from bursting bubbles to jet drops. The problem of producing bubbles of a specified size from glass capillary tips is overcome by paying careful attention to tip geometry. Problems associated with bubble bursting have not been solved, but it is believed that they are caused by small differences in the position of the bubble relative to the interface at the time of bursting. The collection and sizing of jet drops can cause problems, but suggestions are given to overcome them. Of the three problems involving bacteria, only the last appears to have a satisfactory solution. Experiments show that the concentration of bacteria is always highest in the top jet drop of the jet set and decreases progressively in the lower drops, being lowest in the bottom drop. This is in qualitative agreement with the hypothesis of jet drop formation advanced by MacIntyre.

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Section: Increasingsupporting

confidence: 63%

Seven problems in bubble and jet drop researches 1

Blanchard

Syzdek

1978

Limnology & Oceanography

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“…Some groups have reported slightly higher numbers of microorganisms in SML than in SSW (Kuznetsova et al 2004, Joux et al 2006, while others have found even 100-fold enrichment of bacteria in the SML (Bezdek & Carlucci 1972, Hardy 1982. On the other hand, lower numbers and cases with no significant difference have also been observed (Bell & Albright 1982, Joux et al 2006.…”

Section: Introductionmentioning

confidence: 99%

Comparison of sea surface microlayer and subsurface water bacterial communities in the Baltic Sea

Lindroos¹,

Szabo²,

Nikinmaa³

et al. 2011

Aquat. Microb. Ecol.

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Sea surface microlayer (SML) and underlying subsurface water (SSW) bacterial communities from the Baltic Sea were studied using culturing, flow cytometry and terminal restriction fragment length polymorphism (T-RFLP). Dissolved organic matter (DOM) of water samples was determined using high performance liquid size-exclusion chromatography and by measuring dissolved organic carbon. Cadmium, copper, lead and mercury were also measured from the water samples. Two methods were compared for SML sampling: metal screen (MS) and polycarbonate membranes (PCM). All sampling sites were located in the Archipelago Sea off the southwest coast of Finland. The hypothesis was that because of its unique features, such as accumulation of nutrients and pollutants and being unshaded from UV-radiation, the SML would support a different bacterial community to that of SSW. T-RFLP profiles showed differences between the bacterial community compositions of SML and SSW at most sampling sites. In addition, temporal and sampling-site-dependent differences were observed. There were no significant differences in DOM in SML and SSW samples. In most cases, the number of bacteria was slightly higher in the SML than in SSW. No significant cytotoxicity was observed in any of the water samples. Since no temporal trends were obvious, our results suggest that, although bacterial communities in the SML Archipelago Sea differ to some extent from the ones living in SSW, SML is a dynamic environment where bacterial communities possibly develop originally from bacterioplankton and change over time.KEY WORDS: Sea surface microlayer · Bacterial community structure · T-RFLP · Dissolved organic matter Resale or republication not permitted without written consent of the publisher

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“…In this interface, wind-driven surface-waves break and form bubble clouds. This well-studied mechanism sparges particles and surface active substances in the upper water column and transports them to the sea-surface microlayer (Bezdek and Carlucci, 1972;Wallace and Duce, 1978). This transport mechanism is hypothesized to influence microorganism abundance and microbial community diversity in the sea-surface microlayer (Cunliffe et al, 2013).…”

Section: Introductionmentioning

confidence: 99%