Biological, physical, and chemical data collected from inshore and shelf surface waters in Alabama from 2009-07 to 2011-12 (NCEI Accession 0117507)
Quantifying the linkages between primary production and higher trophic levels is necessary to understand why particular regions can support high fisheries production. Modified dilution experiments were employed to characterize microbial communities in surface waters at four sites from within a bay to the shelf in the northern Gulf of Mexico (nGOM). Inshore surface waters were more variable than shelf surface waters due to the strong influence of river discharge. Phytoplankton (Chl a) and prokaryote biomass were both significantly higher inshore than on the shelf, with phytoplankton significantly higher than prokaryotes inshore. Virus and heterotrophic nanoflagellate abundances, however, did not differ between inshore and shelf waters. Samples were amended with nutrients (N + P) to examine the impact of nutrient limitation. Prokaryotes were nutrient limited in 14 (28%) of the experiments, while phytoplankton were nutrient limited in 26 (52%) of the experiments. When phytoplankton were nutrient limited, prokaryote growth rates were significantly altered. A similar impact on phytoplankton growth rates occurred when prokaryotes were nutrient limited, suggesting that the two groups are in competition for resources. Grazing was detected in the majority of experiments, while viral lysis was only detected in 24% of phytoplankton and 12% of prokaryote experiments. Growth and grazing rates for both phytoplankton and prokaryotes were tightly coupled inshore and on the shelf, with significantly more phytoplankton and prokaryotes grazed inshore (average = 106% and 75%, respectively) than on the shelf (average = 55% and 57%). These findings indicate that surface waters across the estuary are highly productive, with microzooplankton grazing transferring the majority of the microbial production to higher trophic levels.
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | non-public |
| contactPoint |
{
"fn": "NOAA National Centers for Environmental Information",
"@type": "vcard:Contact",
"hasEmail": "mailto:ncei.info@noaa.gov"
}
|
| describedByType | application/octet-steam |
| description | Quantifying the linkages between primary production and higher trophic levels is necessary to understand why particular regions can support high fisheries production. Modified dilution experiments were employed to characterize microbial communities in surface waters at four sites from within a bay to the shelf in the northern Gulf of Mexico (nGOM). Inshore surface waters were more variable than shelf surface waters due to the strong influence of river discharge. Phytoplankton (Chl a) and prokaryote biomass were both significantly higher inshore than on the shelf, with phytoplankton significantly higher than prokaryotes inshore. Virus and heterotrophic nanoflagellate abundances, however, did not differ between inshore and shelf waters. Samples were amended with nutrients (N + P) to examine the impact of nutrient limitation. Prokaryotes were nutrient limited in 14 (28%) of the experiments, while phytoplankton were nutrient limited in 26 (52%) of the experiments. When phytoplankton were nutrient limited, prokaryote growth rates were significantly altered. A similar impact on phytoplankton growth rates occurred when prokaryotes were nutrient limited, suggesting that the two groups are in competition for resources. Grazing was detected in the majority of experiments, while viral lysis was only detected in 24% of phytoplankton and 12% of prokaryote experiments. Growth and grazing rates for both phytoplankton and prokaryotes were tightly coupled inshore and on the shelf, with significantly more phytoplankton and prokaryotes grazed inshore (average = 106% and 75%, respectively) than on the shelf (average = 55% and 57%). These findings indicate that surface waters across the estuary are highly productive, with microzooplankton grazing transferring the majority of the microbial production to higher trophic levels. |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "NCEI Dataset Landing Page",
"mediaType": "placeholder/value",
"description": "Navigate directly to the URL for a descriptive web page with download links.",
"downloadURL": "https://www.ncei.noaa.gov/archive/accession/0117507",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "Descriptive Information",
"mediaType": "placeholder/value",
"description": "Navigate directly to the URL for a descriptive web page with download links.",
"downloadURL": "https://www.ncei.noaa.gov/archive/accession/oas/117507",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "HTTPS",
"mediaType": "placeholder/value",
"description": "Navigate directly to the URL for data access and direct download.",
"downloadURL": "https://www.ncei.noaa.gov/archive/accession/download/117507",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "FTP",
"mediaType": "placeholder/value",
"description": "These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP).",
"downloadURL": "ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0063/0117507/",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "https://doi.org/10.3354/ame01544",
"mediaType": "placeholder/value",
"description": "journal article",
"downloadURL": "https://doi.org/10.3354/ame01544",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "https://doi.org/10.3354/ame01685",
"mediaType": "placeholder/value",
"description": "journal article",
"downloadURL": "https://doi.org/10.3354/ame01685",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "https://doi.org/10.1111/1574-6941.12225",
"mediaType": "placeholder/value",
"description": "journal article",
"downloadURL": "https://doi.org/10.1111/1574-6941.12225",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "GCMD Keyword Forum Page",
"mediaType": "placeholder/value",
"description": "Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords",
"downloadURL": "https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "NCEI Contact Information",
"mediaType": "placeholder/value",
"description": "Information for contacts at NCEI.",
"downloadURL": "https://www.ncei.noaa.gov/contact",
"describedByType": "application/octet-steam"
}
]
|
| identifier | gov.noaa.nodc:0117507 |
| issued | 2014-04-15T00:00:00.000+00:00 |
| keyword |
[
"0117507",
"BIOMASS",
"BIOMASS - PLANKTON",
"CHLOROPHYLL A",
"Dissolved Organic Nitrogen",
"DISSOLVED OXYGEN",
"graze rate (or grazing rate)",
"growth rate",
"MICROBIOLOGY",
"MICROPLANKTON",
"NANOPLANKTON",
"NITROGEN",
"NUTRIENTS",
"PHYTOPLANKTON",
"PHYTOPLANKTON BIOMASS",
"SALINITY",
"Silicon",
"WATER TEMPERATURE",
"ZOOPLANKTON BIOMASS",
"bottle",
"CTD",
"Flow Cytometer",
"fluorescence microscope",
"fluorometer",
"laboratory analysis",
"nutrient autoanalyzer",
"biological",
"chemical",
"laboratory analyses",
"manual sample collection",
"physical",
"phytoplankton abundance",
"site samples",
"surface measurements",
"Dauphin Island Sea Lab",
"Dauphin Island Sea Lab",
"Deepwater Horizon oil spill event (DWH)",
"Coastal Waters of Alabama",
"Coastal Waters of Gulf of Mexico",
"Gulf of Mexico",
"North Atlantic Ocean",
"oceanography",
"DOC/NOAA/NESDIS/NODC > National Oceanographic Data Center, NESDIS, NOAA, U.S. Department of Commerce",
"EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PROTISTS > PLANKTON",
"EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PROTISTS > PLANKTON > PHYTOPLANKTON",
"EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON",
"EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON > ZOOPLANKTON",
"EARTH SCIENCE > BIOSPHERE > VEGETATION > BIOMASS",
"EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY",
"EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CHLOROPHYLL",
"EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITROGEN",
"EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NUTRIENTS",
"EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > OXYGEN",
"EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE",
"EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY",
"AUTOANALYZER > AUTOANALYZER",
"CTD > Conductivity, Temperature, Depth",
"FLOW CYTOMETRY",
"FLUORESCENCE MICROSCOPY > FLUORESCENCE MICROSCOPY",
"FLUOROMETERS > FLUOROMETERS",
"OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN",
"OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF AMERICA",
"OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF MEXICO"
]
|
| landingPage | https://www.ncei.noaa.gov/contact |
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2014-04-21T00:00:00.000+00:00 |
| publisher |
{
"name": "NOAA National Centers for Environmental Information",
"@type": "org:Organization"
}
|
| references |
[
"https://doi.org/10.3354/ame01544",
"https://doi.org/10.3354/ame01685",
"https://doi.org/10.1111/1574-6941.12225"
]
|
| rights | otherRestrictions |
| spatial | -88.0113,29.79887,-88.2116,30.4374 |
| temporal | 2009-07-01T00:00:00+00:00/2011-12-31T00:00:00+00:00 |
| title | Biological, physical, and chemical data collected from inshore and shelf surface waters in Alabama from 2009-07 to 2011-12 (NCEI Accession 0117507) |
