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SE_CO2
Stoichiometry Experiment - CO2
Ross
Virginia
Hinman Box 6182
Hanover
NH
03755
US
(603) 646-0192
ross.a.virginia@dartmouth.edu
http://sites.dartmouth.edu/ravirginia/
https://orcid.org/0000-0002-0890-0981
Diana
Wall
Johnson Hall 107
Fort Collins
CO
80523
US
Diana.Wall@colostate.edu
http://wp.natsci.colostate.edu/walllab/
https://orcid.org/0000-0002-9466-5235
McMurdo Dry Valleys LTER
http://mcmlter.org/
Becky
Ball
Becky.Ball@asu.edu
https://orcid.org/0000-0001-8592-1316
field crew
Sue
Welch
welch.318@osu.edu
https://byrd.osu.edu/people/welch.318
https://orcid.org/0000-0002-2890-0065
data manager
Inigo
San Gil
Department of Biology, MSC03 2020 University of New Mexico
Albuquerque
NM
87131
US
(505) 277-2625
(505) 277-2541
isangil@lternet.edu
data manager
2014-01-01
English
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.
carbon dioxide
soil moisture
soil temperature
soil water content
LTER Controlled Vocabulary
Antarctica
carbon
CO2
LTER
nematodes
soil
soil moisture
soil temperature
Stoichiometry
Station Keywords
population dynamics
LTER Core Areas
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.
Data Policies
This data package is released under the Creative Commons Attribution 4.0 International License (CC BY 4.0; http://creativecommons.org/licenses/by/4.0/), which allows consumers (hereinafter referred to as “Data Users”) to freely reuse, redistribute, transform, or build on this work (even commercially) so long as appropriate credit is provided. Accordingly, Data Users are required to properly cite this data package in any publications or in the metadata of any derived products that result from its use (in whole or in part). A recommended citation is provided on the summary metadata page associated with this data package in the McMurdo Dry Valleys LTER Data Catalog (https://mcmlter.org/data), and a generic citation may be found on the summary metadata page in the repository where this data package was obtained. When these data contribute significantly to the contents of a publication, Data Users must also acknowledge that data were provided by the NSF-supported McMurdo Dry Valleys Long Term Ecological Research program (OPP-1637708). This data package has been released in the spirit of open scientific collaboration. Hence, Data Users are strongly encouraged to consider consultation, collaboration, and/or co-authorship (as appropriate) with the data package creator(s). Data Users should be aware these data may be actively used by others for ongoing research; thus, coordination may be necessary to prevent duplicate publication. Data Users should also recognize that misinterpretation of data may occur if they are used outside the context of the original study. Hence, Data Users are urged to contact the data package creator(s) if they have any questions regarding methodology or results. While substantial efforts are made to ensure the accuracy of this data package (with all its components), complete accuracy cannot be guaranteed. Periodic updates to this data package may occur, and it is the responsibility of Data Users to check for new versions. This data package is made available “as is” and comes with no warranty of accuracy or fitness for use. The creator(s) of this data package and the repository where these data were obtained shall not be liable for any damages resulting from misinterpretation, use, or misuse of these data. Finally, as a professional courtesy, we kindly request Data Users notify the primary contact referenced in the metadata when these data are used in the production of any derivative work or publication. Notification should include an explanation of how the data were used, along with a digital copy of the derived product(s). Thank you.
https://mcm.lternet.edu/content/stoichiometry-experiment-co2
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
2003-01-26
2010-01-16
Jan, 2010 - Sue Welch created this metadata and accompanying Oracle data table from metadata info and an Excel spreadsheet from Becky Ball .
McMurdo Dry Valleys LTER
http://mcmlter.org/
McMurdo Dry Valleys LTER
http://mcmlter.org/
McMurdo Dry Valleys LTER
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.
SOILS_SE_CO2
Details about the spreadsheet containing the SE data - units, columns, definitions, missing values and codes and the such
SOILS_SE_CO2.csv
27461
28
1
\n
column
,
"
https://mcm.lternet.edu/sites/default/files/data/SOILS_SE_CO2.csv
DATASET_CODE
DATASET_CODE
Unique identifier for the table in the MCM LTER database
string
Unique identifier for the table in the MCM LTER database
BASIN
BASIN
The lake basin where the soil sample was collected from (Bonney or Fryxell).
string
Bonney
Lake Bonney Basin
Fryxell
Lake Fryxell Basin
SAMPLE_ID
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
string
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
BLOCK_ID
The block number that the soil sample was collected from.
string
The block number that the soil sample was collected from.
TREATMENT
TREATMENT
The manipulation for a given plot from where the soil was collected.
string
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
PRE_DATE_TIME
The date and time CO2 flux was measured in the field before re-application of treatment
date
MM/DD/YYYY HH24:MI
PRE_CO2
PRE_CO2
Soil CO2 flux measured using LI-8100 before re-application of treatment
micromol CO2/m2sec
real
0
Null
None given
PRE_TEMP
PRE_TEMP
Soil temperature at time of CO2 flux measurement before re-application of treatment
celsius
real
0
Null
None given
PRE_MOISTURE
PRE_MOISTURE
Soil moisture at time of CO2 flux measurement before re-application of treatment
g/g soil
real
0
100
Null
None given
POST_DATE_TIME
POST_DATE_TIME
The date and time CO2 flux was measured in the field after re-application of treatment
date
MM/DD/YYYY HH24:MI
POST_CO2
POST_CO2
Soil CO2 flux measured using LI-8100 before re-application of treatment
micromol CO2/m2sec
real
0
Null
None given
POST_TEMP
POST_TEMP
Soil temperature at time of CO2 flux measurement after re-application of treatment
celsius
real
0
Null
None given
POST_MOISTURE
POST_MOISTURE
Soil moisture at time of CO2 flux measurement after re-application of treatment
g/g soil
real
0
100
Null
None given
COMMENTS
COMMENTS
Generic comments about the sample
string
Generic comments about the sample
DATE_TIME
DATE_TIME
The date and time of the second measurement, same as POST_DATE_TIME
date
MM/DD/YYYY HH24:MI