Data Package Metadata   View Summary

Rio Icacos hyporheic and riparian chemistry

General Information
Data Package:
Local Identifier:knb-lter-luq.109.72
Title:Rio Icacos hyporheic and riparian chemistry
Alternate Identifier:DOI PLACE HOLDER
Abstract:

Hydrologic and chemical characteristics were determined for both riparian and hyporheic subsurface flow along a 100-m reach of a sandy-bottom tributary of the Rio Icacos in the Luquillo Experimental Forest, Puerto Rico. Hydrologic data (vertical hydraulic gradient and hydraulic conductivity of streambed sediments) and the topographic and morphological features of the watershed indicated diffuse inputs of groundwater from the near-stream riparian zone along this site. Cumulative groundwater discharge, determined by tracer dilution techniques, was ~1.5 L/s or 10% of the total stream discharge. Spatial heterogeneity in hydrologic and chemical properties of riparian and hyporheic sediments was large. Hydraulic conductivity explained much of the variation in NH4-N and dissolved organic carbon (DOC) concentrations, with highest concentrations in sites having low conductivity. A mass-balance approach was used to examine the influence of the near-stream zone on nutrient transport and retention. Outwelling riparian groundwater had the potential to increase stream N concentrations by up to 84% and DOC concentrations by up to 38% along our 100-m reach. Because stream concentrations were constant downstream despite this input, we conclude that significant N and C retention or loss were occurring in the near-stream zone. Lotic ecosystems and their associated riparian groundwater can have a quantitatively significant impact on the nutrient budgets of tropical headwater catchments.

Publication Date:2011-06-03
Language:English

Time Period
Begin:
2003-01-28
End:
2007-11-28

People and Organizations
Contact:McDowell, William H.  [  email ]
Contact:Chestnut, Tamara  [  email ]
Creator:McDowell, William H. 
Associate:Melendez-Colom, Eda (University of Puerto Rico, Rio Piedras Campus, data manager)
Associate:Chestnut, Tamara 

Data Entities
Data Table Name:
Hyporheic chemistry
Description:
Hyporheic chemistry
Data Table Name:
Sample name description
Description:
Sample name description
Detailed Metadata

Data Entities


Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/knb-lter-luq/109/72/6ab29f73a6427586139edf564ee606e3
Name:Hyporheic chemistry
Description:Hyporheic chemistry
Number of Records:604
Number of Columns:11

Time Period
Begin:
1996-06-08
End:
1996-07-26

Table Structure
Object Name:hypchem.csv
Size:33754
Text Format:
Number of Header Lines:1
Number of Foot Lines:0
Record Delimiter:\n
Orientation:column
Simple Delimited:
Field Delimiter:,

Table Column Descriptions
 Name of sample locationSample DateNitrate-N concentrationAmmonium-N concentrationDissolved Organic NitrogenTotal Dissolved NitrogenDissolved Organic CarbonSulfateChlorideSaturated hydraulic conductivityDissolved O2
Column Name:Sample  
Sample_Date  
NO3N  
NH4N  
DON  
TDN  
DOC  
SO4-S  
Cl  
KSAT  
DO  
Definition:Name of sample location: site number and well or streamDate when the sample was collectedNitrate-N concentrationAmmonium-N concentrationDissolved Organic Nitrogen (by difference (TDN - NO3-N - NH4-N)) in mg N/LTotal Digestible Nutrients (prior to 1998 by persulfate oxidation and automated colorimetric analysis; after 1998 by high temperature catalytic oxidation with chemiluminescent detection) inmg N/LDissolved Organic Carbon (up to 1998 by persulfate oxidation (McDowell et al. 1997); after 1998 by high temperature catalytic oxidation) in mg C/LSulfate (Liquid chromatography; conductivity detection) in mg/LChloride (up to 1989 by automated colorimetric analysis (thiocyanate); after 1989 by liquid chromatography with conductivity detection) in ug Cl/LSaturated hydraulic conductivityDissolved O2 (DO) measurements were made with a YSI handheld O2 meter
Storage Type:string  
date  
                 
Measurement Type:nominaldateTimeratioratioratioratioratioratioratioratioratio
Measurement Values Domain:
DefinitionName of sample location: site number and well or stream
FormatDD/MM/YYYY
Precision
UnitmilligramsPerLiter
Precision0.01
Typereal
UnitmilligramsPerLiter
Precision0.01
Typereal
UnitmilligramsPerLiter
Typereal
UnitmilligramsPerLiter
Typereal
UnitmilligramsPerLiter
Typereal
UnitmilligramsPerLiter
Typereal
UnitmicrogramsPerLiter
Typereal
UnitcentimetersPerSecond
Precision0.01
Typereal
UnitmilligramsPerLiter
Precision0.1
Typereal
Missing Value Code:        
Code-9999.00
ExplMissing Value
Code-9999.00
ExplMissing Value
Codeblank
ExplMissing Value
Code-9999.00
ExplMissing Value
Code-9999.00
ExplMissing Value
   
Accuracy Report:                      
Accuracy Assessment:                      
Coverage:                      
Methods:                      

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/knb-lter-luq/109/72/0f9c621f34e0d6daf0cd23ae97c4667f
Name:Sample name description
Description:Sample name description
Number of Records:111
Number of Columns:3

Time Period
Date:
1996-06-08

Table Structure
Object Name:hypname.csv
Size:10132
Text Format:
Number of Header Lines:1
Number of Foot Lines:0
Record Delimiter:\n
Orientation:column
Simple Delimited:
Field Delimiter:,

Table Column Descriptions
 Name of sample locationSite, well or stream codeDescription of code
Column Name:Sample  
CODE  
DESCRIPTIONofCODE  
Definition:Name of sample location: site number and well or streamSite, well or stream codeSite name of location and description of well or stream
Storage Type:string  
string  
string  
Measurement Type:nominalnominalnominal
Measurement Values Domain:
DefinitionName of sample location: site number and well or stream
DefinitionSite, well or stream code
DefinitionSite name of location and description of well or stream
Missing Value Code:      
Accuracy Report:      
Accuracy Assessment:      
Coverage:      
Methods:      

Data Package Usage Rights

Data Policies

LTER Network Data Access Policy, Data Access Requirements, and General Data Use Agreement
approved by the LTER Coordinating Committee April 6, 2005

Long Term Ecological Research Network Data Access Policy

The LTER data policy includes three specific sections designed to express shared network policies regarding the release of LTER data products, user registration for accessing data, and the licensing agreements specifying the conditions for data use.

LTER Network Data Release Policy

Data and information derived from publicly funded research in the U.S. LTER Network, totally or partially from LTER funds from NSF, Institutional Cost-Share, or Partner Agency or Institution where a formal memorandum of understanding with LTER has been established, are made available online with as few restrictions as possible, on a nondiscriminatory basis. LTER Network scientists should make every effort to release data in a timely fashion and with attention to accurate and complete metadata.

Data[current-user:created]

There are two data types:

Type I – data are to be released to the general public according to the terms of the general data use agreement (see Section 3 below) within 2 years from collection and no later than the publication of the main findings from the dataset and,

Type II - data are to be released to restricted audiences according to terms specified by the owners of the data. Type II data are considered to be exceptional and should be rare in occurrence. The justification for exceptions must be well documented and approved by the lead PI and Site Data Manager. Some examples of Type II data restrictions may include: locations of rare or endangered species, data that are covered under prior licensing or copyright (e.g., SPOT satellite data), or covered by the Human Subjects Act. Researchers that make use of Type II Data may be subject to additional restrictions to protect any applicable commercial or confidentiality interests.

While the spirit of this document is to promote maximum availability for ecological data in either Type I or II status, there are criteria by which priority for data release may be determined. Primary observations collected for core research activities directly supported by LTER research must receive the highest priority for data release. Data collected by other sources to which LTER supported research has added value is also a high priority Other types of data including non-LTER data that was acquired for LTER research, student thesis data, schoolyard LTER data, or legacy data that already suffer from inadequate documentation or format obsolescence may be ranked a lower priority by a site with justifications provided in their data management policy. Finally, some data may be determined of lowest priority for archiving on the grounds that they are interim data that led to final products that carry the scientific value. These might include data files created during stages within an analytic workflow, raw or replicate data values that were subsequently aggregated or processed for release, or individual outputs from stochastic models.

Metadata

Metadata documenting archived/online data sets of all types listed above will be made available when, or before, the dataset itself is released according to the terms above.
All metadata will be publicly available regardless of any restrictions on access to the data.
All metadata will follow LTER recommended standards and will minimally contain adequate information on proper citation, access, contact information, and discovery. Complete information including methods, structure, semantics, and quality control/assurance is expected for most datasets and is strongly encouraged.
LTER Network Data Access Requirements

The access to all LTER data is subject to requirements set forth by this policy document to enable data providers to track usage, evaluate its impact in the community, and confirm users' acceptance of the terms of acceptable use. These requirements are standardized across the LTER Network to provide contractual exchange of data between Site Data Providers, Network Data Providers, and Data Users that can be encoded into electronic form and exchanged between computers. This will allow direct access to data via a common portal once these requirements have been fulfilled. The following information may be required directly or by proxy prior to the transference of any data object:

Registration

1. Name

2. Affiliation

3. Email Address

4. Full Contact Information

Acceptance of the General Public Use Agreement or Restricted Data Use Agreement, as applicable.
A Statement of Intended Use that is compliant with the above agreements. Such statements may be made submitted explicitly or made implicitly via the data access portal interface.

General Data Use Agreement

LUQ  data and metadata is released under public domain:  CC BY – Attribution.

Conditions of Use

The consumer of these data (“Data User” herein) has an ethical obligation to cite it appropriately in any publication that results from its use. The Data User should realize that these data may be actively used by others for ongoing research and that coordination may be necessary to prevent duplicate publication. The Data User is urged to contact the authors of these data if any questions about methodology or results occur. Where appropriate, the Data User is encouraged to consider collaboration or coauthorship with the authors. The Data User should realize that misinterpretation of data may occur if used out of context of the original study. While substantial efforts are made to ensure the accuracy of data and associated documentation, complete accuracy of data sets cannot be guaranteed. All data are made available “as is.” The Data User should be aware, however, that data are updated periodically and it is the responsibility of the Data User to check for new versions of the data. The data authors and the repository where these data were obtained shall not be liable for damages resulting from any use or misinterpretation of the data. Thank you.
Disclaimer

While substantial efforts are made to ensure the accuracy of data and documentation contained in this Data Set, complete accuracy of data and metadata cannot be guaranteed. All data and metadata are made available "as is". The Data User holds all parties involved in the production or distribution of the Data Set harmless for damages resulting from its use or interpretation.[current-user:name]

Keywords

By Thesaurus:
Core Areasinorganic nutrients
LTER Controlled Vocabularyecosystems, aquatic ecosystems, rivers, measurements, hydrological properties, spatial properties, riparian, processes, biogeochemical processes, nutrient cycling, substances, elements and compounds, carbon, dissolved organic carbon, nitrogen, substrates, hyporheic zone

Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

Methods and protocols used in the collection of this data package
Description:

Soil solution was collected approximately every month from the zero tension lysimeters within the CTE plots. Samples were filtered through a pre-combusted GF/F filter, frozen and shipped to the Water Quality Analysis Lab for analysis at the University of New Hampshire, Durham, NH.

Instrument(s):<p>Cl - liquid chromatography with conductivity detection</p>

People and Organizations

Creators:
Individual: William H. McDowell
Address:
University of New Hampshire Department of Natural Resources James Hall,
Durham, NH 3824 US
Phone:
(603) 862-2249 (voice)
Phone:
(603) 862-4976 (facsimile)
Email Address:
wmcdowell@lternet.edu
Web Address:
http://nre.unh.edu/faculty/mcdowell
Contacts:
Individual: William H. McDowell
Address:
University of New Hampshire Department of Natural Resources James Hall,
Durham, NH 3824 US
Phone:
(603) 862-2249 (voice)
Phone:
(603) 862-4976 (facsimile)
Email Address:
wmcdowell@lternet.edu
Web Address:
http://nre.unh.edu/faculty/mcdowell
Individual: Tamara Chestnut
Address:
US
Email Address:
tjeklund@christa.unh.edu
Associated Parties:
Individual: Eda Melendez-Colom
Organization:University of Puerto Rico, Rio Piedras Campus
Address:
University of Puerto Rico at Rio Piedras, Ponce de Leon Ave.,
San Juan, PR 00931 US
Phone:
(787) 764-0000 (voice)
Email Address:
edacorreo@yahoo.com
Role:data manager
Individual: Tamara Chestnut
Address:
US
Email Address:
tjeklund@christa.unh.edu
Role:associated researcher

Temporal, Geographic and Taxonomic Coverage

Temporal, Geographic and/or Taxonomic information that applies to all data in this dataset:

Time Period
Begin:
2003-01-28
End:
2007-11-28
Sampling Site: 
Description:Puerto Rico 191 Bosque Nacional El Yunque, Rio Grande, Naguabo 00745, Puerto Rico ‎ 788 m O; Reaches for the experiment were chosen based on the lack of significant surface water inputs from tributaries.
Site Coordinates:
Longitude (degree): -65.7806Latitude (degree): 18.279
Altitude (meter):650

Temporal, Geographic and/or Taxonomic information that applies to Data Table: Hyporheic chemistry


Time Period
Begin:
1996-06-08
End:
1996-07-26

Temporal, Geographic and/or Taxonomic information that applies to Data Table: Sample name description


Time Period
Date:
1996-06-08

Project

Other Metadata

EDI is a collaboration between the University of New Mexico and the University of Wisconsin – Madison, Center for Limnology:

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