ECOHAB: Doucette_G- Algicidal bacteria and the regulation of Karenia brevis blooms in the Gulf of Mexico from 1998-11-16 to 1999-09-29 (NODC Accession 0000542)

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Interactions between bacteria and species of harmful and/or toxic algae are potentially important factors affecting both the population dynamics and toxicity of these algae. Recent reports of bacteria lethal to certain harmful algal bloom (HAB) species, coupled with a rapidly evolving interest in attempting to minimize the adverse effects of HABs through various prevention, control, and mitigation strategies, has focused attention on defining the role of algicidal bacteria in bloom termination. The aim of the present study was to determine if algicidal bacteria active against Karenia brevis, a dinoflagellate responsible for frequent and protracted red tides in the Gulf of Mexico, are present in the waters of the west Florida shelf. To date we have detected one algicidal bacterium from samples obtained during ECOHAB-Florida cruises and we are continuing this effort. A taxon-specific 16S rRNA probe was developed for a previously isolated algicidal strain, 41-DBG2, and we have begun to screen water samples for its presence using fluorescent in-situ hybridization. In addition, we have employed denaturing gradient gel electrophoresis (DGGE) to characterize the diversity of the ambient microbial assemblages and to visualize the band characteristic of strain 41-DBG2. This band can then be analyzed further by excising and sequencing. Our screening results to date have yielded negative results on all but one of the field samples tested, which was positive with the rRNA probe. These largely negative findings may not be unexpected due to the marked temporal and spatial separation of the original algicidal bacterial isolation and the water samples being screened. Future efforts will focus on isolating algicidal bacteria from the same bloom event as the samples for screening are obtained, thereby increasing the likelihood of detecting algicidal strains and permitting a more effective analysis of their population dynamics.

Purpose: This project dealing with the potential role of algicidal bacteria in regulating K. brevis bloom dynamics is a targeted ECOHAB proposal, the field portion of which is being conducted through a collaborative working relationship with the ECOHAB-Florida regional project. The present dataset reflects results from analyses of samples collected during the ECOHAB-Florida process cruises identified below. The primary use of these samples has been two-fold: first to screen water samples for the presence of a previously identified algicidal bacterium, strain 41-DBG2, using fluorescent in-situ hybridization of a taxon-specific rRNA probe as well as analysis by denaturing gradient gel electrophoresis (DGGE); and, second, to continue attempts at isolating and identifying algicidal bacteria indigenous to the waters of the west Florida shelf.
  • Cite as: Steely, Teresa; US DOC/NOAA/NOS/National Center for Coastal Ocean Science > Center for Coastal Environmental Health and Biomolecular Research (2014). ECOHAB: Doucette_G- Algicidal bacteria and the regulation of Karenia brevis blooms in the Gulf of Mexico from 1998-11-16 to 1999-09-29 (NODC Accession 0000542). Version 1.1. National Oceanographic Data Center, NOAA. Dataset. [access date]
gov.noaa.nodc:0000542
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Distributor DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
301-713-3277
NCEI.Info@noaa.gov
Dataset Point of Contact Information Services
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
301-713-3277
NCEI.Info@noaa.gov
Time Period 1998-11-16 to 1999-09-29
Spatial Bounding Box Coordinates
N: 30.39237
S: 25.44867
E: -81.71588
W: -87.23565
Spatial Coverage Map
General Documentation
Publication Dates
  • publication: 2014-09-19
Edition 1.1
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Data Update Frequency As needed
Supplemental Information
ECOHAB (ECology and Oceanography of Harmful Algal Blooms) is a scientific program designed to increase understanding of the fundamental processes underlying the impacts and population dynamics of HABs. This program addresses the many factors at organismal, population, community, and ecosystem levels that determine how HAB species respond to, and potentially alter their environment, the manner in which HAB species affect food-web and community interactions. The program is based on the results of a workshop co-sponsored by National Oceanic and Atmospheric Administration (NOAA) and National Science Foundation (NSF) and currently receives funding from several federal partners including NOAA, NSF, the U.S. Navy and the U.S. Environmental Protection Agency (EPA).
Purpose Basic research
Use Limitations
  • accessLevel: Public
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Dataset Citation
  • Cite as: Steely, Teresa; US DOC/NOAA/NOS/National Center for Coastal Ocean Science > Center for Coastal Environmental Health and Biomolecular Research (2014). ECOHAB: Doucette_G- Algicidal bacteria and the regulation of Karenia brevis blooms in the Gulf of Mexico from 1998-11-16 to 1999-09-29 (NODC Accession 0000542). Version 1.1. National Oceanographic Data Center, NOAA. Dataset. [access date]
Cited Authors
Resource Providers
Publishers
Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
Global Change Master Directory (GCMD) Science and Services Keywords
  • EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > BACTERIA/ARCHAEA
  • EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PROTISTS > PLANKTON > PHYTOPLANKTON
Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords
  • DOC/NOAA/NESDIS/NODC > National Oceanographic Data Center, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NOS/NCCOS/CCEHBR > Center For Coastal Environmental Health and Biomolecular Research, National Centers For Coastal Ocean Science, National Ocean Service, NOAA, U.S. Department Of Commerce
NODC SUBMITTING INSTITUTION NAMES THESAURUS
Instrument keywords NODC INSTRUMENT TYPES THESAURUS
Place keywords NODC SEA AREA NAMES THESAURUS Global Change Master Directory (GCMD) Location Keywords
  • OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN
  • OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF MEXICO
Project keywords NODC PROJECT NAMES THESAURUS Global Change Master Directory (GCMD) Project Keywords
  • ECOHAB > Ecology and Oceanography of Harmful Algal Bloom
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Steely, Teresa; US DOC/NOAA/NOS/National Center for Coastal Ocean Science > Center for Coastal Environmental Health and Biomolecular Research (2014). ECOHAB: Doucette_G- Algicidal bacteria and the regulation of Karenia brevis blooms in the Gulf of Mexico from 1998-11-16 to 1999-09-29 (NODC Accession 0000542). Version 1.1. National Oceanographic Data Center, NOAA. Dataset. [access date]
Access Constraints
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Lineage information for: dataset
Processing Steps
  • 2014-09-19T17:19:09 - NCEI Accession 0000542 v1.1 was published.
Output Datasets
Lineage information for: repository
Processing Steps
  • 2015-04-22T00:00:00 - NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
Acquisition Information (collection)
Instrument
  • bottle
  • laboratory analysis
Last Modified: 2017-10-20T17:22:30
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