SE_CO2
English
utf8
dataset
McMurdo Dry Valleys LTER
http://mcmlter.org/
2014-11-13
ISO 19115-2 Geographic Information - North American Profile Metadata - Data with Biological Extensions
ISO 19115-2:2009(E)
Stoichiometry Experiment - CO2
2014-11-13
publication
Ross Virginia
Dartmouth College
http://dartmouth.edu/
(603) 646-0192
Hinman Box 6182
Hanover
NH
03755
US
ross.a.virginia@dartmouth.edu
http://sites.dartmouth.edu/ravirginia/
pointOfContact
Diana Wall
Colorado State University
http://www.colostate.edu
Johnson Hall 107
Fort Collins
CO
80523
US
Diana.Wall@colostate.edu
http://wp.natsci.colostate.edu/walllab/
pointOfContact
documentDigital
Soil communities in the McMurdo Dry Valleys are subject to many limitations, including resource limitations. However, the nutrients that are predominantly limiting to growth and diversity of soil biota are not known. Additionally, landscape history (N deposition, P weathering) and native N and P content (glacial till provenance) may influence the ability of soil communities to respond to nutrient additions or changes in nutrient availability associated with environmental change. Long-term experiments in the Bonney and Fryxell basins have been established with yearly application of aqueous nutrient additions: C, N, P, CN, and CP. Multiple nutrients additions were made at the Redfield Ratio of 106:16:1 (C:N:P). Responses of soil chemistry, CO2 flux, and biota are reported.
Name: Becky A. Ball Role: field crew Name: Sue Welch Role: data manager Name: Inigo San Gil Role: data manager
completed
McMurdo Dry Valleys LTER
http://mcmlter.org/
unknown
Jan, 2010 - Sue Welch created this metadata and accompanying Oracle data table from metadata info and an Excel spreadsheet from Becky Ball .
population dynamics
theme
LTER Core Areas
English
This is a core LTER study to determine the impact of changes in the availability of nutrient resources (carbon nitrogen and phosphorus) in the soil on biogeochemical cycling and soil biota. The experiment is being conducted in both Fryxell and Bonney Basin and was established in the 2006-2007 austral summer.
162.313003540039
162.313003540039
-77.725700378418
-77.725700378418
This is a core LTER study to determine the impact of changes in the availability of nutrient resources (carbon nitrogen and phosphorus) in the soil on biogeochemical cycling and soil biota. The experiment is being conducted in both Fryxell and Bonney Basin and was established in the 2006-2007 austral summer.
163.260437011719
163.260437011719
-77.608230590820
-77.608230590820
ground condition
2003-01-26
2010-01-16
In the attribute table, the treatment is the manipulation for a given plot from which the soil was collected. The treatments are: (C) carbon additions as mannitol, (N) nitrogen additions as NH4NO3, (P) phosphorus additions as Na3PO4, (CN) carbon and nitrogen additions, (CP) carbon and phosphorus additions, (W) water-only additions, and (U) un-amended plots.
https://mcm.lternet.edu/sites/default/files/data/SOILS_SE_CO2.csv
SOILS_SE_CO2
eng; US
McMurdo Dry Valleys LTER
SOILS_SE_CO2
Data Source Definition : Details about the spreadsheet containing the SE data - units, columns, definitions, missing values and codes and the such Record Delimiter : \n Number of Header Lines : 28 Number of Footer Lines : 1 Orientation : Column Quote Character :
"Field Delimiter : ,
false
DATASET_CODE
Unique identifier for the table in the MCM LTER database
BASIN
The lake basin where the soil sample was collected from (Bonney or Fryxell).
Bonney
Lake Bonney Basin
Fryxell
Lake Fryxell Basin
SAMPLE_ID
The block and treatment combination of the sample. (C) carbon additions as mannitol (N) nitrogen additions as NH4NO3 (P) phosphorus additions as Na3PO4 (CN) carbon and nitrogen additions (CP) carbon and phosphorus additions, (W) water-only additions (U) un-amended plots. The numbers indicated the plot/block number
BLOCK_ID
The block number that the soil sample was collected from.
TREATMENT
The manipulation for a given plot from where the soil was collected.
C
carbon additions as mannitol
N
nitrogen additions as NH4NO3
P
phosphorus additions as Na3PO4
CN
carbon and nitrogen additions
CP
carbon and phosphorus additions,
W
water-only additions
U
un-amended plots.
PRE_DATE_TIME
The date and time CO2 flux was measured in the field before re-application of treatment
Date Time Format: MM/DD/YYYY HH24:MI
PRE_CO2
Soil CO2 flux measured using LI-8100 before re-application of treatment
PRE_TEMP
Soil temperature at time of CO2 flux measurement before re-application of treatment
PRE_MOISTURE
Soil moisture at time of CO2 flux measurement before re-application of treatment
POST_DATE_TIME
The date and time CO2 flux was measured in the field after re-application of treatment
Date Time Format: MM/DD/YYYY HH24:MI
POST_CO2
Soil CO2 flux measured using LI-8100 before re-application of treatment
POST_TEMP
Soil temperature at time of CO2 flux measurement after re-application of treatment
POST_MOISTURE
Soil moisture at time of CO2 flux measurement after re-application of treatment
COMMENTS
Generic comments about the sample
DATE_TIME
The date and time of the second measurement, same as POST_DATE_TIME
Date Time Format: MM/DD/YYYY HH24:MI
DBF
https://mcm.lternet.edu/sites/default/files/data/SOILS_SE_CO2.csv
dataset
Three sites were chosen on generally flat areas of moderately patterned soil. Plots were laid out in an identical design at each site. There are 7 treatments replicated 8 times in blocks. Treatments were randomly assigned to the plots within each block. Each plot measures 1 m x 1 m (with a 0.83 m diameter area within used for experimental treatments and analyses). Plots are delineated by nails inserted in the soil, and the margins of each site are marked by PVC stakes approximately 60 cm high. Water and aqueous nutrient treatments were applied annually at a rate of 5.6 L per plot, with 15 g C m-2 as mannitol, 2.5 g N m-2 as NH4NO3, and/or 0.75 g P m-2 as Na3PO4 (see Treatment Codes under Additional Information). Each plot was fitted with a 10-cm diameter PVC collar that created a seal with the soil. Soil CO2 flux from each PVC collar was measured using a LI-COR 8100 (Lincoln, NE), fitted with a soil respiration survey chamber. At each measurement, soil temperature in the surrounding soil was measured using soil temperature probe Type E. Soil moisture of the surrounding soil was measured using a Theta probe Model ML2. Measurements of CO2 flux, temperature, and moisture were taken within 2 weeks prior to annual treatment application, then again approx. 2 weeks after annual treatment application.
Metadata Access Constraints: none Metadata Use Constraints: none
annually
McMurdo Dry Valleys LTER
http://mcmlter.org/
pointOfContact