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Relative abundance of Bacillus spp., surfactant-associated bacterium present in a natural sea slick observed by satellite SAR imagery over the Gulf of Mexico

Howe, Kathryn Lynn and Dean, Cayla Whitney and Kluge, John and Soloviev, Alexander and Tartar, Aurelien and Shivji, Mahmood and Lehner, Susanne and Perrie, William (2018) Relative abundance of Bacillus spp., surfactant-associated bacterium present in a natural sea slick observed by satellite SAR imagery over the Gulf of Mexico. Elementa : Science of the Anthropocene, 6, pp. 1-8. BioOne. DOI: doi.org/10.1525/elementa.268 ISSN 2325-1026

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Official URL: https://www.elementascience.org/article/10.1525/elementa.268/

Abstract

The damping of short gravity-capillary waves (Bragg waves) due to surfactant accumulation under low wind speed conditions results in the formation of natural sea slicks. These slicks are detectable visually and in synthetic aperture radar satellite imagery. Surfactants are produced by natural life processes of many marine organisms, including bacteria, phytoplankton, seaweed, and zooplankton. In this work, samples were collected in the Gulf of Mexico during a research cruise on the R/V F.G. Walton Smith to evaluate the relative abundance of Bacillus spp., surfactant-associated bacteria, in the sea surface microlayer compared to the subsurface water at 0.2 m depth. A method to reduce potential contamination of microlayer samples during their collection on polycarbonate flters was implemented and advanced, including increasing the number of successive samples per location and changing sample storage procedures. By using DNA analysis (real-time polymerase chain reaction) to target Bacillus spp., we found that in the slick areas, These surfactant-associated bacteria tended to reside mostly in subsurface waters, lending support to the concept that the surfactants they may produce move to the surface where they accumulate under calm conditions and enrich the sea surface microlayer.

Item URL in elib:https://elib.dlr.de/119735/
Document Type:Article
Title:Relative abundance of Bacillus spp., surfactant-associated bacterium present in a natural sea slick observed by satellite SAR imagery over the Gulf of Mexico
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Howe, Kathryn LynnNova Southeastern University, FL, USAUNSPECIFIED
Dean, Cayla WhitneyNova Southeastern University, FL, USAUNSPECIFIED
Kluge, JohnNova Southeastern University, FL, USAUNSPECIFIED
Soloviev, AlexanderNova Southeastern University, USAUNSPECIFIED
Tartar, AurelienNova Southeastern UniversityUNSPECIFIED
Shivji, MahmoodOceanographic Center, NOVA Southeastern University, Diana Beach, FL, USAUNSPECIFIED
Lehner, SusanneSusanne.Lehner (at) dlr.deUNSPECIFIED
Perrie, WilliamFisheries and Oceans Canada, Bedford Institute of Oceanography, Nova Scotia, CanadaUNSPECIFIED
Date:2018
Journal or Publication Title:Elementa : Science of the Anthropocene
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:6
DOI :doi.org/10.1525/elementa.268
Page Range:pp. 1-8
Publisher:BioOne
ISSN:2325-1026
Status:Published
Keywords:microlayer; surfactant; bacteria; SAR
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben hochauflösende Fernerkundungsverfahren
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Photogrammetry and Image Analysis
Deposited By: Zielske, Mandy
Deposited On:07 May 2018 16:09
Last Modified:26 Jun 2018 23:50

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