The dataset is composed of three files providing the data used in the published paper Mueller et al. (2020) in the journal Nature Communications:

1.)      data_experiment_1.csv (refers to experiment 1, a full-factorial marsh-organ experiment including manipulations of relative sea level, atmospheric [CO2] and nitrogen availability)

2.)      data_experiment_2.csv (refers to experiment 2, a full-factorial marsh-organ experiment including manipulations of relative sea level and plant-species composition)

3.)      data_field.csv (refers to the field data from the Salt Marsh Accretion Response to Temperature Experiment)

Information on column headings / variables:

File

Column heading

Variable explanation

data_experiment_1.csv

chamber_ID

# of marsh organ chamber (1-6)

data_experiment_1.csv

sea_level

mean sea level (cm) as used in publication

data_experiment_1.csv

mesocosm_ID

# of replicated mesocosm of sea level-chamber combination

data_experiment_1.csv

co2

CO2 treatment, ambient (A) versus elevated (E) as used in publication

data_experiment_1.csv

nitrogen

nitrogen treatment, fertilized (N) versus control (C) as used in publication

data_experiment_1.csv

sc_ag

aboveground biomass of Schoenoplectus (g/mesocosm)

data_experiment_1.csv

sp_ag

aboveground biomass of Spartina (g/mesocosm)

data_experiment_1.csv

total_bg

belowground biomass (g/mesocosm)

data_experiment_1.csv

total_biomass

total biomass (g/mesocosm)

data_experiment_1.csv

roots

root biomass (g/mesocosm)

data_experiment_1.csv

rhizomes

rhizome biomass (g/mesocosm)

data_experiment_1.csv

bg_stems

belowground-stem biomass (g/mesocosm)

data_experiment_1.csv

sc_rhizomes

Schoenoplectus rhizome biomass (g/mesocosm)

data_experiment_1.csv

sp_rhizomes

Spartina rhizome biomass (g/mesocosm)

data_experiment_1.csv

sc_stem

Schoenoplectus belowground-stem biomass (g/mesocosm)

data_experiment_1.csv

sp_stem

Spartina belowground-stem biomass (g/mesocosm)

data_experiment_1.csv

beta

Root depth distribution (ß) sensu Gale and Grigal 1987 (https://doi.org/10.1139/x87-131)

data_experiment_1.csv

flux

methane emissions (µmol/m2/hr)

data_experiment_2.csv

replicate

# of replicated observation of sea level-species combination

data_experiment_2.csv

sea_level

mean sea level (cm) as used in publication

data_experiment_2.csv

species

mesocosm either planted with Spartina (Sp) or Schoenoplectus (Sc)

data_experiment_2.csv

flux

methane emissions (µmol/m2/hr)

data_experiment_2.csv

redox

soil redox potential (mV) at 10 cm depth referenced to standard hydrogen electrode

data_field.csv

plot_ID

identifier of field plot of the SMARTX warming experiment of the Smithsonian Environmental Research Center

data_field.csv

sc_relative

relative amount (0-1) of Schoenoplectus aboveground biomass to total aboveground biomass

data_field.csv

flux

methane emissions (µmol/m2/d)