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Potential denitrification rates in moderately oiled marshes at the Chandeleur Island, July 2015 to February 2016

Alabama Center for Ecological Resilience (ACER)

DOI:
10.7266/N7GX48KH
 
UDI:
R4.x262.207:0002
Last Update:
Jul 13 2017 21:27 UTC
 
Dataset Author(s):
Mortazavi, Behzad
Point of Contact:
Mortazavi, Behzad
The University of Alabama / Department of Biological Sciences
Box 870344
Tuscaloosa, Alabama  35487
USA
bmortazavi@ua.edu
Funding Source:
RFP-IV
Data Collection Period:
2015-07-09 to 2016-02-22

Identified Submitted Review Available
3 3 3 3

Abstract:

The Deepwater Horizon oil spill has contributed to significant loss of marsh vegetation. Decreased marsh vegetation habitats can lead to a reduction in organic carbon and other key nutrients available for microbial communities in sediments. Potential denitrification rates were achieved by collecting 0-2 cm and 5-7 cm sediments in vegetated marsh and unvegetated intertidal marsh habitats. Sediments were treated with and without nitrate and rates will be determined using acetylene inhibition technique.

Purpose:

The purpose of this study was to measure potential denitrification rates in moderately oiled marsh and intertidal habitats

Theme Keywords:

Denitrification, Nitrogen cycling, marsh sediments, Marsh Habitats, Intertidal Habitats

File Format:

csv

Dataset Downloads:

0

Potential denitrification rates in moderately oiled marshes at the Chandeleur Island, July 2015 to February 2016



Identification Information
Distribution Information
Metadata Maintenance Information

Metadata: 
  File identifier: 
      R4.x262.207-0002-metadata.xml
  Language: 
      eng; USA
  Character set: 
    Character set code: 
      utf8
  Hierarchy level: 
    Scope code: 
      dataset
  Metadata author: 
    Responsible party: 
      Individual name: 
          Behzad Mortazavi
      Organisation name: 
          The University of Alabama / Department of Biological Sciences
      Position name: 
          Associate Professor
      Contact info: 
        Contact: 
          Phone: 
            Telephone: 
              Voice: 
                  2518612141
              Facsimile: 
          Address: 
            Address: 
              Delivery point: 
                  Box 870344
              City: 
                  Tuscaloosa
              Administrative area: 
                  Alabama
              Postal code: 
                  35487
              Country: 
                  USA
              Electronic mail address: 
                  bmortazavi@ua.edu
      Role: 
        Role code: 
          pointOfContact
  Date stamp: 
      2018-08-11T13:28:06+00:00
  Metadata standard name: 
      ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
  Metadata standard version: 
      ISO 19115-2:2009(E)
  Dataset URI: 
      https://data.gulfresearchinitiative.org/metadata/R4.x262.207:0002
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Identification info: Data identification: Citation: Citation: Title: Potential denitrification rates in moderately oiled marshes at the Chandeleur Island, July 2015 to February 2016 Alternate title: Date: Date: Date: 2016-05-04 Date type: Date type code: publication Abstract: The Deepwater Horizon oil spill has contributed to significant loss of marsh vegetation. Decreased marsh vegetation habitats can lead to a reduction in organic carbon and other key nutrients available for microbial communities in sediments. Potential denitrification rates were achieved by collecting 0-2 cm and 5-7 cm sediments in vegetated marsh and unvegetated intertidal marsh habitats. Sediments were treated with and without nitrate and rates will be determined using acetylene inhibition technique. Purpose: The purpose of this study was to measure potential denitrification rates in moderately oiled marsh and intertidal habitats Status: Progress code: completed Point of contact: Responsible party: Individual name: Behzad Mortazavi Organisation name: The University of Alabama / Department of Biological Sciences Position name: Associate Professor Contact info: Contact: Phone: Telephone: Voice: 2518612141 Facsimile: Address: Address: Delivery point: Box 870344 City: Tuscaloosa Administrative area: Alabama Postal code: 35487 Country: USA Electronic mail address: bmortazavi@ua.edu Role: Role code: principalInvestigator Descriptive keywords: Keywords: Keyword: Denitrification Keyword: Nitrogen cycling Keyword: marsh sediments Keyword: Marsh Habitats Keyword: Intertidal Habitats Type: Keyword type code: theme Descriptive keywords: Keywords: Keyword: Chandeleur Islands Keyword: Red Fish Point Keyword: Gulf of Mexico Keyword: Louisiana Type: Keyword type code: place Language: eng; USA Topic category: Topic category code: environment Topic category: Topic category code: oceans Extent: Extent: Geographic element: Geographic bounding box: West bound longitude: -88.84119 East bound longitude: -88.84119 South bound latitude: 29.8628 North bound latitude: 29.8628 Geographic element: BoundingPolygon: Polygon: gml:MultiPoint: gml:pointMember: Point: gml:pos: 29.8628 -88.84119 Temporal element: Temporal extent: Extent: Time period: Description: ground condition Begin date: 2015-07-09 End date: 2016-02-22 Supplemental Information: Date: month, day and year, Location A: Location of site on Chandeleur Island map, Habitat: sediments were collected from intertidal habitats or marsh habitats, treatment: control is site water only while nitrate is addition of 100 µM KNO3-, depth: sediments were collected at depths of 0-2 cm and 5-7 cm, replication: number of replicate bottles per sample, denitrification rates: measured in micromoles of nitrogen per meter squared per hour (µmol N m2 hr-1), N2O, Nitrous oxide: measured in micromoles of nitrogen per meter squared per hour (µmol N m2 hr-1), NO3- + NO2, nitrate plus nitrogen dioxide: measured in micromoles per liter of nitrogen (µM N), PO4, phosphate: measured in micromoles per liter of phosphorus (µM), NO2, nitrogen dioxide: measured in micromoles per liter of nitrogen (µM N), NH4+, ammonium: measured in micromoles per liter of ammonium (µM), NO3-, nitrate: measured in micromoles per liter of nitrogen (µM N), DIN, dissolved inorganic nitrogen: measured in micromoles per liter of nitrogen, NPOC, dissolved organic carbon: measured in milligrams per liter (umol C L-1), Moisture: water filled pore space measured in percent of water in sediment, bulk density: measured in grams per centimeter cubed (g cm3) latitude: measured in degrees minutes and seconds, longitude: measured in degrees minutes and seconds.|Potential denitrification rates were measured using the acetylene inhibition technique. Sediments were collected from marsh and intertidal habitats at depths of 0-2cm and 5-7cm. Approximately 20 g of sediment and 35 ml of site water was placed in 70ml serum bottles. Twelve bottles were reserved for a control treatment which included site water only, while twelve bottles were amended with 1ml of 100 µM KNO3-. Samples were crimped with a butyl stopper and flushed with N2 gas for 10 minutes. Samples were then injected with acetylene and placed on a shaker table for 1 hour. This process was repeated with a second set of 24 bottles without the addition of acetylene to measure the amount of N2O produced during the denitrification process. After 1 hour, headspace was injected into 12 ml Labco vials and stored at room temperature until analysis the following day. Gas samples were measured with a gas chromatograph equipped with an ECD. || ||
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Distribution info: Distribution: Distributor: Distributor: Distributor contact: Responsible party: Organisation name: Gulf of Mexico Research Initiative Information and Data Cooperative (GRIIDC) Contact info: Contact: Phone: Telephone: Voice: 3618253604 Address: Address: Delivery point: 6300 Ocean Drive City: Corpus Christi Administrative area: TX Postal code: 78412 Country: USA Electronic mail address: griidc@gomri.org Online Resource: Online Resource: Linkage: URL: https://data.gulfresearchinitiative.org Role: Role code: distributor Distributor format: Format: Name: csv Version: inapplicable File decompression technique: Distributor transfer options: Digital transfer options: Transfer size: 0.0244 Online: Online Resource: Linkage: URL: http://data.gulfresearchinitiative.org/data/R4.x262.207:0002 Protocol: https
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Metadata maintenance: Maintenance information: Maintenance and update frequency: unknown Maintenance note: This ISO metadata record was automatically generated from information provided to GRIIDC for dataset: R4.x262.207:0002 on 2018-09-24T23:39:56+00:00
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