Abstract:

Productivity of Spartina alterniflora and Avicennia germinans was assessed by measuring growth of shoots/leaves between sampling periods (approximately 3 months). Measured replicates were tagged during sampling in June 2016, and remeasured in September of 2016. These data were collected at Chandeleur Island, Louisiana.

Suggested Citation:

Just Cebrian, Josh Goff. 2018. Assessment of marsh/mangrove above and below ground productivity at Chandeleur Island, 2016. Distributed by: Gulf of Mexico Research Initiative Information and Data Cooperative (GRIIDC), Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N7DR2SZJ

Purpose:

In order to observe effects of oil contamination on biological processes, productivity of Avicennia germinans and Spartina alterniflora communities were assessed using measurements of above- and belowground growth for both species over time.

Data Parameters and Units:

site_location_perc_cover.csv: Latitude: measured in decimal degrees, Longitude: measured in decimal degrees, Date: Date that samples were collected (mm/dd/yyyy), Site: Name assigned to each site at the beginning of the sampling period (all ACER groups using same site names), Habitat: Habitat type where the samples were collected at each site (mangrove, marsh, or mixed), Oiling?: Denotes whether the site was oiled (Oiled) or non-oiled (Non) according to SCAT (Shoreline Cleanup and Assessment Technique) shoreline data from NOAA, Mangrove: Percentage of plot 3x3m plot containing Mangrove (A germinans) vegetation Spartina: Percentage of plot 3x3m plot containing Spartina (S. alterniflora) vegetation Batis: Percentage of plot 3x3m plot containing Batis sp. vegetation Borrichia: Percentage of plot 3x3m plot containing Borrichia sp. vegetation Salicornia: Percentage of plot 3x3m plot containing Salicornia sp vegetation Iva: Percentage of plot 3x3m plot containing Iva sp. vegetation Bare: Percentage of plot 3x3m plot that is not vegetated Rack: Percentage of plot 3x3m plot containing tidal rack Total: Sum of Mangrove, Spartina, Batis, Borrichia, Salicornia, Iva, Bare, and Rack. Must sum to 100 Other Vegetation: Sum of Batis, Borrichia, Salicornia, Iva. Considered secondary species of interest spartina_density.csv: Date: Date that samples were collected (mm/dd/yyyy), Site: Name assigned to each site at the beginning of the sampling period (all ACER groups using same site names), Habitat: Habitat type where the samples were collected at each site (mangrove, marsh, or mixed), Oiling?: Denotes whether the site was oiled (Oiled) or non-oiled (Non) according to SCAT (Shoreline Cleanup and Assessment Technique) shoreline data from NOAA, Shoots/0.25m2: Number of shoots in a 0.25m2 quadrat. Spartina_ag_production.csv: Date: Date that samples were collected (mm/dd/yyyy), Site: Name assigned to each site at the beginning of the sampling period (all ACER groups using same site names), Habitat: Habitat type where the samples were collected at each site (mangrove, marsh, or mixed), Oiling?: Denotes whether the site was oiled (Oiled) or non-oiled (Non) according to SCAT (Shoreline Cleanup and Assessment Technique) shoreline data from NOAA, Shoot type: Denotes if shoot measured was "Tagged" indicating the shoot was marked or "New" indicating new growth. Note that new growth only in 9/20/2015 sampling). AG denotes Aboveground biomass, Shoot number: Denotation of shoot replicate, Leaf 1 (youngest) to Leaf n (oldest): Measurement of leaf length in centimeters for each leaf on tagged and new shoots. Column G begins the series with Leaf 1 (youngest), the youngest leaf on the shoot, and continues until all leaves are measured to Leaf n (Oldest). spartina_bg_production.csv: Date: Date that samples were collected (mm/dd/yyyy), Site: Name assigned to each site at the beginning of the sampling period (all ACER groups using same site names), Habitat: Habitat type where the samples were collected at each site (mangrove, marsh, or mixed), Oiling?: Denotes whether the site was oiled (Oiled) or non-oiled (Non) according to SCAT (Shoreline Cleanup and Assessment Technique) shoreline data from NOAA, Replicate: Denotation of core replicate (n=1, 2, or 3), Dry Mass (g) w/ Tray: Dried mass of root material and sample tray in grams, Post Muffle Mass (g) w/ Tray: Mass of root material and sample tray in grams after burning, Tray Mass: Mass of the sample tray in grams, Abs Dry Mass (g): Dry mass w/ Tray minus the tray mass in grams, Abs Post Muffle Mass (g): Post Muffle Mass w/ Tray minus the tray mass in grams, AFDW (g): Abs Dry Mass minus Abs Post Muffle Mass in grams. Indicates organic matter content. mangrove_density.csv: Date: Date that samples were collected (mm/dd/yyyy), Site: Name assigned to each site at the beginning of the sampling period (all ACER groups using same site names), Habitat: Habitat type where the samples were collected at each site (mangrove, marsh, or mixed), Oiling?: Denotes whether the site was oiled (Oiled) or non-oiled (Non) according to SCAT (Shoreline Cleanup and Assessment Technique) shoreline data from NOAA, Tree: Denotation of tree replicate (n=1, 2, or 3), Leaves: Number of leaves counted on branch, New Leaves: Number of new leaves (only for 9/20/2015 sampling). mangrove_ag_production.csv: Date: Date that samples were collected (mm/dd/yyyy), Site: Name assigned to each site at the beginning of the sampling period (all ACER groups using same site names), Habitat: Habitat type where the samples were collected at each site (mangrove, marsh, or mixed), Oiling?: Denotes whether the site was oiled (Oiled) or non-oiled (Non) according to SCAT (Shoreline Cleanup and Assessment Technique) shoreline data from NOAA, Tree: Denotation of tree replicate (n=1, 2, or 3), Grazing?: Assessment of grazing as "yes" or "no" Pic Number: Picture number used to pair pictures with replicate label (photo analysis software used to calculate the leaf area is ImageJ), Leaf Number: Replicate leaf number, Area: Assessment of leaf area using photo analysis software (cm^2). mangrove_bg_production.csv: Date: Date that samples were collected (mm/dd/yyyy), Site: Name assigned to each site at the beginning of the sampling period (all ACER groups using same site names), Habitat: Habitat type where the samples were collected at each site (mangrove, marsh, or mixed), Oiling?: Denotes whether the site was oiled (Oiled) or non-oiled (Non) according to SCAT (Shoreline Cleanup and Assessment Technique) shoreline data from NOAA, Tree: Denotation of tree replicate (n=1, 2, or 3), Pneumatophores (10cm2): Number of pneumatophores in a 0.10m2 quadrat. AG - aboveground biomass (i.e. leaves, shoots, stems, and/or branches) BG - belowground biomass (i.e. roots and rhizomes) Site Habitat Oiling? Latitude (decimal degrees) Longitude (decimal degrees) A Mangrove Oiled 29.863559 -88.841141 A Marsh Oiled 29.863884 -88.840527 A Mixed Oiled 29.863972 -88.840707 B Mangrove Oiled 29.8941 -88.82858 B Marsh Oiled 29.89422 -88.82938 B Mixed Oiled 29.89401 -88.82928 C1S Mangrove Non 29.927641 -88.828596 C1S Marsh Non 29.927703 -88.828017 C1S Mixed Non 29.927514 -88.82826 C2N Mangrove Non 29.93216 -88.82712 C2N Marsh Non 29.93197 -88.82783 C2N Mixed Non 29.93206 -88.8281

Individual Files: