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limndin.dat
Dissolved Inorganic Nitrogen Concentrations in Lakes
John
Priscu
jpriscu@montana.edu
https://orcid.org/0000-0001-5807-6364
McMurdo Dry Valleys LTER
http://mcmlter.org/
Amy
Chiuchiolo
LRES, 334 Leon Johnson Hall
Bozeman
MT
59717
US
(406) 994-2360
(406) 994-5863
achiuchiolo@montana.edu
associated researcher
Kathleen
Welch
kathleen.welch@colorado.edu
https://orcid.org/0000-0003-1028-3086
lab crew
Chris
Gardner
gardner.177@osu.edu
https://orcid.org/0000-0003-0400-3754
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
2015-10-08
English
The McMurdo Long Term Ecological Research (LTER) project monitors patterns of inorganic material transport in perennial ice-capped lakes. This data set addresses this core area of research and quantifies dissolved inorganic nitrogen concentrations at specific depths in McMurdo Dry Valley lakes.
Antarctica
DIN
inorganic
lake
limnology
nitrogen
Station Keywords
dissolved inorganic nitrogen
lakes
LTER Controlled Vocabulary
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/dissolved-inorganic-nitrogen-concentrations-lakes
1993-10-10
2014-10-31
2015 - data and metadata now managed using the Drupal Ecological Information Management System. Data created as derivative of LIMNO_NUTRIENTS -- the sum of NH4, NO2 and NO3. Data from this table was submitted to INSTAAR by John Priscu's team at Montana State University. The raw data file listed under 'file name' is the name of the original file submitted. The 1996/97 and 1997/98 datasets are ascii text files. Upon arrival at INSTAAR, the data manager fine-tuned the location codes and limno runs to match those provided in the "locations, dates, codes for lake chemistry, biology samples" file. The file was imported into Microsoft Access on INSTAAR's Unix system, and can currently be found there. The file was then exported in ascii, comma delimited text and MS-DOS text (table layout) to present on the MCM LTER web site. Both of these files are linked to this web page above. Information for the metadata was obtained from the Metanut9697.rtf file. The file was called up using Microsoft Word version 6.0. Text from this file was used to create this page in html format.
McMurdo Dry Valleys LTER
http://mcmlter.org/
McMurdo Dry Valleys LTER
http://mcmlter.org/
McMurdo Dry Valleys LTER
Lake water samples were collected at specific depths with a five-liter Niskin bottle during normal LTER limnological sampling. Sub-samples were decanted into three-1 L Nalgene bottles (2-light and 1-amber), two-500 mL amber Nalgene bottles, three-150 mL borosilicate glass bottles, two-20 mL scintillation vials, and one-30 mL serum vial. One-100 mL sub-sample was taken from the one-liter amber Nalgene bottle. The sample was filtered through a combusted (475 degrees C for 4 hours) Whatman 25 mm GF/F filter using a bell jar apparatus. The filtrate was collected in a 125 mL acid washed Nalgene bottle and stored at -20 degrees C until analysis by ASA analytical chemist performed the nutrient assays with a Lachat Quickchem AE Autoanalyzer using standard methods.
limndin
LIMNO_DIN.csv
610183
28
1
\n
column
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https://mcm.lternet.edu/sites/default/files/data/LIMNO_DIN_0.csv
DATASET_CODE
DATASET_CODE
Code to designate the table name
string
Code to designate the table name
LIMNO_RUN
Limno Run
Code for lake's sampling location and date
string
Code for lake's sampling location and date
Location Name
Location Name
Name of lake where measurement was made
string
Name of lake where measurement was made
Location Code
Location Code
Code for site where measurement was made
string
Code for site where measurement was made
DATE_TIME
Date
Date on which sample was gathered
date
mm/dd/yyyy
Depth (m)
Depth (m)
Distance below the piezometric water level from which sample was drawn.
meter
1
real
1
45
DIN (uM)
DIN (uM)
Dissolved inorganic nitrogen concentration found at lake depth
microM
0.01
real
0
1500
Null
None given
DIN Comments
DIN Comments
Helpful hints about the DIN sample
string
Helpful hints about the DIN sample
File Name
File Name
Name of file in which data was submitted
string
Name of file in which data was submitted
DEPTH MASL
DEPTH MASL
Depth referred to the Sea level. Distance below Mean Average Sea wa ter level reference from which sample was drawn
meter
1
real