Rebecca J Howard
Stagg, Camille L
2018
Early growth interactions between a mangrove and an herbaceous salt marsh species are not affected by elevated CO2 or drought, Louisiana saltmarsh, 2015
tabular digital data
Reston, Va
U.S. Geological Survey
https://doi.org/10.5066/F7C8286J
In recent decades the encroachment of woody mangrove species into herbaceous marshes has been documented along the U.S. northern Gulf of Mexico coast. These species shifts have been attributed primarily to rising sea levels and warming winter temperatures, but the role of elevated atmospheric carbon dioxide (CO2) and water availability may become more prominent drivers of species interactions under future climate conditions. In this greenhouse study we examined the effects of CO2 concentration (ambient, elevated) and water regime (drought, saturated, flooded) on early growth of the mangrove species Avicennia germinans and Spartina alterniflora, a herbaceous grass.
Data were collected to examine the effects of CO2 concentration (ambient, elevated) and water regime (drought, saturated, flooded) on early growth of the mangrove species Avicennia germinans and Spartina alterniflora, a herbaceous grass.
Author ORCIDs: Howard, R.J. (0000-0001-7264-4364);Stagg, C.L.(0000-0002-1125-7253)
20150101
20151231
ground condition
None planned
-92.29614257812501
-91.69189453125001
30.44393799829119
29.950175057288813
US
ISO 19115 Topic Category
biota
USGS Thesaurus
vegetation
mangroves
greenhouse gases
USGS Biocomplexity Thesaurus
salt marshes
water availability
None
atmospheric carbon dioxide
species interactions
mangrove encroachment
drought
Spartina alterniflora
Avicennia germinans
greenhouse experiment
USGS Metadata Identifier
USGS:5963db36e4b0d1f9f059d937
GNIS
Louisiana
Lafayette, La
None. Please see 'Distribution Info' for details.
None. Users are advised to read the data set's metadata thoroughly to understand appropriate use and data limitations.
Rebecca J Howard
U.S. Geological Survey, Southeast Region
Mailing and Physical
700 Cajundome Blvd
Lafayette
LA
70506
United States
337-266-8500
howardr@usgs.gov
Rebecca J. Howard
Camille L. Stagg
Herry S. Utomo
201807
Early growth interactions between a mangrove and an herbaceous salt marsh species are not affected by elevated CO 2 or drought
publication
Estuarine, Coastal and Shelf Science
vol. 207
n/a
Elsevier BV
ppg. 74-81
http://dx.doi.org/10.1016/j.ecss.2018.03.026
USGS Biocomplexity Thesaurus
Plants
Integrated Taxonomic Information System (ITIS)
2017
Integrated Taxonomic Information System (ITIS)
ONLINE_REFERENCE
Washington, D.C.
Integrated Taxonomic Information System (ITIS)
http://itis.gov
Rebecca J Howard
Southeast Region
mailing and physical
700 Cajundome Blvd
Lafayette
LA
70506
United States
337-266-8500
howardr@usgs.gov
expert advice
Identified in the field by qualified scientist.
All plants were identified to the level of Genus and Species in the data.
Kingdom
Plantae
Subkingdom
Viridiplantae
Infrakingdom
Streptophyta
Superdivision
Embryophyta
Division
Tracheophyta
Subdivision
Spermatophytina
Class
Magnoliopsida
Superorder
Asteranae
Order
Lamiales
Family
Acanthaceae
Genus
Avicennia
Species
Avicennia germinans
black mangrove
No formal attribute accuracy tests were conducted.
No formal logical accuracy tests were conducted.
Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details.
A formal accuracy assessment of the horizontal positional information in the data set has not been conducted.
A formal accuracy assessment of the vertical positional information in the data set has either not been conducted, or is not applicable.
Saltmarsh_CO2_MangroveHeight_Time_Data.csv. The number of rooted A. germinans seedlings in each pot was recorded over time. Height of A. germinans seedlings was measured 11 times during the experiment; the first measurement occurred on day 80 and the final on day 308, when harvest of the experiment began.
201511
Saltmarsh_CO2_MangroveHeight_Harvest_Data.csv At the conclusion Harvest of the experiment, A. germinans stem height, number of live leaves per seedling, and number of pneumatophores per pot were recorded.
201511
Saltmarsh_CO2_SpartinaHeight_Harvest_Data.csv Spartina alterniflora individual stem height, stem number per pot, and number of stems with inflorescences were also recorded.
201511
Saltmarsh_CO2_AG_Biomass_Data.csv and Saltmarsh_CO2_BG_Biomass_Data.csv. At harvest all aboveground tissue was clipped at the substrate surface and separated into the following categories by species: A. germinans – live stems, live leaves, and pneumatophores; S. alterniflora – live stems, inflorescences, and dead tissue. Belowground material was collected by gently rinsing soil from the roots. We did not separate belowground material by species for the mixed species assemblage because it was not possible to determine the species identity of small and fine roots. All plant tissues were placed in labeled paper bags and dried in a forced-air oven at 60 °C until a constant mass was reached; final mass was recorded.
201511
Saltmarsh_CO2_EhSalinity_Harvest_Data.csv. At harvest measured reduction-oxidation (redox) potential at 10 cm below the sediment surface was measured in each pot using platinum electrodes (two per pot) linked to a calomel reference electrode; the redox electrodes were allowed to stabilize for 30 minutes before measurement and readings were obtained using a millivolt meter (Thermo Fisher Scientific Orion Star A221 pH meter, Waltham, Massachusetts). Measurements were corrected by adding 244 mV to account for the reference electrode potential. A syringe with attached plastic tubing was used to collect soil porewater from 10 cm below the sediment surface for measurement of salinity (Yellow Springs Instruments Model 30 meter, Yellow Springs, Ohio).
201511
Field
Avicennia germinans propagules were collected in December 2014 along a canal (29°10ʹ N, 90°14ʹW) near Bayou Lafourche in Leeville, Louisiana. Spartina alterniflora seeds were provided by the Louisiana State University Agricultural Center, Rice Research Station, in Crowley, Louisiana. Experimental pots in the experiment were assigned labels indicating treatment levels of CO2 concentration and water regime (flooded, drought, or saturated).
SaltMarsh_CO2_MasterLegend.xls
Overview of the project entity/attribute information in an Excel formatted spreadsheet.
Producer defined
Saltmarsh_CO2_Mangrove_Height_Time_Data.csv
Record of Avicennia germinans Height (cm) measurements over eleven time intervals.
Producer defined.
Saltmarsh_CO2_AG_Biomass_Data.csv
Record of above ground biomass collected at Harvest - (Time 11).
Producer defined
Saltmarsh_CO2_BG_Biomass_Data.csv
Record of below ground biomass collected at Harvest - (Time 11).
Producer defined
Saltmarsh_CO2_MangroveHeight_Harvest_Data.csv
Record of height and count data for pots with Avicennia alone, and Spartina and Avicennia at time 11.
Producer define.
Saltmarsh_CO2_EhSalinity_Harvest_Data.csv
Record of Eh (reduction-oxidatation) and salinity measurements taken at Harvest - (Time 11).
Producer defined.
Saltmarsh_CO2_SpartinaHeight_Harvest_Data.csv
Record of height and count data for Pots with Spartina alone, and Spartina and Avicennia at time 11.
Producer defined.
The attribute information provided here is to give a brief overview of the data files included in the data release. Please see the associated zip file for the individual data files and a more detailed metadata description.
Not applicable
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Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.
Digital Data
https://doi.org/10.5066/F7C8286J
None
20200830
Rebecca J Howard
U.S. Geological Survey, Southeast Region
Research Ecologist
Mailing and Physical
700 Cajundome Blvd
Lafayette
LA
70506
United States
337-266-8500
337-266-8592
howardr@usgs.gov
FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata
FGDC-STD-001.1-1999