Data Package Metadata   View Summary

CTE Soil Biogeochemistry 2014

General Information
Data Package:
Local Identifier:knb-lter-luq.201.23
Title:CTE Soil Biogeochemistry 2014
Alternate Identifier:DOI PLACE HOLDER
Abstract:

Climate change is increasing the intensity of severe tropical storms and cyclones (also referred to as hurricanes or typhoons), with major implications for tropical Forest structure and function. These changes in disturbance regime are likely to play an important role in regulating ecosystem carbon (C) and nutrient dynamics in tropical and subtropical forests. Canopy opening and debris deposition resulting from severe storms have complex and interacting effects on ecosystem biogeochemistry. Disentangling these complex effects will be critical to better understand the long-term implications of climate change on ecosystem C and nutrient dynamics. In this study, we used a well-replicated, long-term (10 years) canopy and debris manipulation experiment in a wet tropical forest to determine the separate and combined effects of canopy opening and debris deposition on soil C and nutrients throughout the soil profile (1 m). Debris deposition alone resulted in higher soil C and N concentrations, both at the surface (0–10 cm) and at depth (50–80 cm). Concentrations of NaOHorganic P also increased significantly in the debris deposition only treatment (20–90 cm depth), as did NaOH-total P (20–50 cm depth). Canopy opening, both with and without debris deposition, significantly increased NaOH-inorganic P concentrations from 70 to 90 cm depth. Soil iron concentrations were a strong predictor of both C and P patterns throughout the soil profile. Our results demonstrate that both surface- and subsoils have the potential to significantly increase C and nutrient storage a decade after the sudden deposition of disturbance-related organic debris. Our results also show that these effects may be partially offset by rapid decomposition and decreases in litterfall associated with canopy opening. The significant effects of debris deposition on soil C and nutrient concentrations at depth (>50 cm), suggest that deep soils are more dynamic than previously believed, and can serve as sinks of C and nutrients derived from disturbance-induced pulses of organic matter inputs.

Publication Date:2018-04-05
Language:English

Time Period
Begin:
2014-09-01
End:
2014-11-30

People and Organizations
Contact:Silver, Whendee  [  email ]
Contact:Gutierrez del Arroyo Santiago, Omar  [  email ]
Creator:Silver, Whendee 
Creator:Gutierrez del Arroyo Santiago, Omar 

Data Entities
Data Table Name:
CTE Soil Biogeochemistry 2014
Description:
Canopy Trimming Experiment Soil Biogeochemistry 2014
Detailed Metadata

Data Entities


Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/knb-lter-luq/201/23/55fe3afb21d87667166f118b50d781df
Name:CTE Soil Biogeochemistry 2014
Description:Canopy Trimming Experiment Soil Biogeochemistry 2014
Number of Records:120
Number of Columns:22

Time Period
Begin:
2014-09-01
End:
2014-11-30

Table Structure
Object Name:CTEBiochemistry2014.csv
Size:11614
Text Format:
Number of Header Lines:1
Number of Foot Lines:0
Record Delimiter:\r\n
Orientation:column
Simple Delimited:
Field Delimiter:,

Table Column Descriptions
 BlockTreatmentTrimDebrisSoil Depth (cm)pHmoisture (%)C (%)N (%)C:N ratioFe2 (mg/g)Fe2+Fe3 (mg/g)Fe2/Total Fe (%)Fe (mg/g)Al (mg/g)Si (mg/g)Bicarb-PiBicarb-PoBicarb-TotalNaOH-PiNaOH-PiNaOH-Total
Column Name:CTE Block identifier  
Plot Treatment  
Trimming  
Debris  
Soil Depth  
pH Measured  
Soil Moisture Percent  
Total Carbon Percent  
Total Nitrogen Percent  
Carbon to Nitrogen ratio  
Reduced Iron Concentration  
Total Iron Concentration  
Reduced Iron to Total Iron Ratio  
Extractable Iron Concentration  
Extractable Aluminum Concentration  
Extractable Silicone Concentration  
Bicarbonate-Inorganic Phosphorus Concentration  
Bicarbonate-Organic Phosphorus Concentration  
Bicarbonate-Total Phosphorus Concentration  
Sodium hydroxide-Inorganic Phosphorus Concentration  
Sodium hydroxide-Organic Phosphorus Concentration  
Sodium hydroxide-Total Phosphorus Concentration  
Definition:Name given to a grouping of 4-like plots in one of three locations of the Canopy Trimming Experiment(CTE).Indicates which treatment was applied: Control, Trim only, Debris only, Trim+DebrisIndicates whether the canopy was trimmed in the plot.Indicates whether debris was added to the plot.Depth of soil in centimeterspH measured in deionized watergravimetric soil moisturePercent total carbonPercent total nitrogenCarbon to nitrogen ratioHCl-extractable reduced iron concentrationHCl-extractable total iron concentrationHCl-extractable reduced iron to total iron ratioCitrate-ascorbate extractable iron concentrationCitrate-ascorbate extractable aluminum concentrationCitrate-ascorbate extractable silicone concentration: mg Si/g dry soilBicarbonate-extractable inorganic phosphorus concentration: Microgram phosphorus/g dry soilBicarbonate-extractable organic phosphorus: microgram phosphorus/g dry soilBicarbonate-extractable total phosphorusSodium hydroxide-extractable inorganic phosphorus: microgram phosphorus/g dry soilSodium hydroxide-extractable organic phosphorus: microgram phosphorus/g dry soilSodium hydroxide-extractable total phosphorus: microgram phosphorus/g dry soil
Storage Type:string  
string  
string  
string  
  string  
                               
Measurement Type:nominalnominalnominalnominalrationominalratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratio
Measurement Values Domain:
Allowed Values and Definitions
Enumerated Domain 
Code Definition
CodeA
DefinitionA set of four plots located 30+ m West of western edge of Big Grid (LFDP), on North and South side of Prieta stream, near Vogt old plots
Source
Code Definition
CodeB
DefinitionA set of four plots located 30+ m South of Big Grid, all plots along Oxcart Trail
Source
Code Definition
CodeC
DefinitionA set of four plots located 30+ m West of SE corner of Big Grid (LFDP)
Source
DefinitionIndicates which treatment was applied: Control, Trim only, Debris only, Trim+Debris
Allowed Values and Definitions
Enumerated Domain 
Code Definition
CodeYes
DefinitionCanopy was trimmed in the plot
Source
Code Definition
CodeNo
DefinitionCanopy was not trimmed in the plot
Source
Allowed Values and Definitions
Enumerated Domain 
Code Definition
CodeYes
DefinitionDebris was added to the plot
Source
Code Definition
CodeNo
DefinitionDebris was not added to the plot
Source
Unitcentimeter
Typereal
DefinitionpH measured in deionized water
Unitnumber
Typereal
Unitnumber
Typereal
Unitnumber
Typereal
Unitnumber
Typereal
UnitmilligramsPerGrams
Typereal
UnitmilligramsPerGrams
Typereal
Unitnumber
Typereal
UnitmilligramsPerGrams
Typereal
UnitmilligramsPerGrams
Typereal
UnitmilligramsperGrams
Typereal
UnitmicrogramsPerGram
Typereal
UnitmicrogramsPerGram
Typereal
UnitmicrogramsPerGram
Typereal
UnitmicrogramsPerGram
Typereal
UnitmicrogramsPerGram
Typereal
UnitmicrogramsPerGram
Typereal
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 Areasdisturbance, inorganic nutrients, organic matter
LTER Controlled Vocabularysoil nutrients, soil carbon, phosphorus, soil

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:

We measured soil pH in a 1:1 soil to water slurry, as well as gravimetric soil moisture by oven-drying subsamples at 105°C to a constant weight. Total soil C and N content were measured on a CE Instruments NC 2100 Elemental Analyzer (Rodano, Milano, Italy) on soils that were air-dried and ground. To measure labile (i.e., soluble phosphate) and recalcitrant (i.e., bound to Fe or Al) P pools, we used a modified Hedley fractionation with NaHCO3 and NaOH extractions respectively (Tiessen & Moir, 1993). Briefly, we sequentially extracted approximately 1.5 g fresh soil with 0.5 M NaHCO3 and 0.1 M NaOH. Both extracts were analyzed colorimetrically for inorganic P and total P after digestion with acid ammonium persulfate, while organic P was calculated as the difference between total and inorganic P (Murphy & Riley, 1962). We measured Fe species as these have been shown to be an important predictor of both C (Hall & Silver, 2015) and P (Chacon, Silver, Dubinsky, & Cusack, 2006) cycling in this ecosystem. Concentrations of reduced and oxidized iron (Fe(II) + Fe(III)) were measured with a 0.5 M HCl extraction and analyzed colorimetrically. Soils were extracted with 0.2 M sodium citrate/0.05 M sodium ascorbate solution and analyzed on an inductively coupled plasma atomic emission spectrometer (Perkin-Elmer, USA) for poorly crystalline Fe. We were only able to analyze two treatments for citrate ascorbate-extractable Fe due to limited resources, and thus chose the controls and the opening+debris treatments as being most representative of a natural event.

People and Organizations

Creators:
Individual: Whendee Silver
Address:
University of California, Ecosystem Sciences Division Dept. of Environmental Science, Policy & Management Mulford Hall #3114,
Berkeley, CA 94720 US
Phone:
(510) 643-3074 (voice)
Phone:
(510) 643-5098 (facsimile)
Email Address:
wsilver@berkeley.edu
Individual: Omar Gutierrez del Arroyo Santiago
Address:
University of Puerto Rico, Biology Department,
San Juan, PR 00931 PR
Email Address:
omar.gutierrezdela@gmail.com
Contacts:
Individual: Whendee Silver
Address:
University of California, Ecosystem Sciences Division Dept. of Environmental Science, Policy & Management Mulford Hall #3114,
Berkeley, CA 94720 US
Phone:
(510) 643-3074 (voice)
Phone:
(510) 643-5098 (facsimile)
Email Address:
wsilver@berkeley.edu
Individual: Omar Gutierrez del Arroyo Santiago
Address:
University of Puerto Rico, Biology Department,
San Juan, PR 00931 PR
Email Address:
omar.gutierrezdela@gmail.com
Metadata Providers:
Individual: Omar Gutierrez del Arroyo Santiago
Address:
University of Puerto Rico, Biology Department,
San Juan, PR 00931 PR
Email Address:
omar.gutierrezdela@gmail.com

Temporal, Geographic and Taxonomic Coverage

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

Time Period
Begin:
2014-09-01
End:
2014-11-30
Sampling Site: 
Description:Puerto Rico 186 Bosque Nacional El Yunque, Rio Grande, Rio Grande 00745, Puerto Rico ‎ 467 m NO
Site Coordinates:
Longitude (degree): -65.8183Latitude (degree): 18.3239
Altitude (meter):343
Sampling Site: 
Description:CTE Block A Plot 2 in the Quebrada Prieta Research Area
Site Coordinates:
Longitude (degree): -65.8177Latitude (degree): 18.324
Altitude (meter):358
Sampling Site: 
Description:CTE Block A Plot 3 in the Quebrada Prieta Research Area
Site Coordinates:
Longitude (degree): -65.8179Latitude (degree): 18.3248
Altitude (meter):356
Sampling Site: 
Description:CTE Block A Plot 4 in the Quebrada Prieta Research Area
Site Coordinates:
Longitude (degree): -65.8175Latitude (degree): 18.3245
Altitude (meter):358
Sampling Site: 
Description:CTE Block B Plot 1 in the Quebrada Prieta Research Area
Site Coordinates:
Longitude (degree): -65.8141Latitude (degree): 18.3215
Altitude (meter):443
Sampling Site: 
Description:CTE Block B Plot 2 in the Quebrada Prieta Research Area
Site Coordinates:
Longitude (degree): -65.8136Latitude (degree): 18.3214
Altitude (meter):456
Sampling Site: 
Description:CTE Block B Plot 3 in the Quebrada Prieta Research Area
Site Coordinates:
Longitude (degree): -65.8132Latitude (degree): 18.3208
Altitude (meter):470
Sampling Site: 
Description:CTE Block B Plot 4 in the Quebrada Prieta Research Area
Site Coordinates:
Longitude (degree): -65.8127Latitude (degree): 18.3202
Altitude (meter):490
Sampling Site: 
Description:CTE Block C Plot 1 in the Quebrada Prieta Research Area
Site Coordinates:
Longitude (degree): -65.8136Latitude (degree): 18.3226
Altitude (meter):443
Sampling Site: 
Description:CTE Block C Plot 2 in the Quebrada Prieta Research Area
Site Coordinates:
Longitude (degree): -65.813Latitude (degree): 18.3226
Altitude (meter):443
Sampling Site: 
Description:CTE Block C Plot 3 in the Quebrada Prieta Research Area
Site Coordinates:
Longitude (degree): -65.8124Latitude (degree): 18.3226
Altitude (meter):464
Sampling Site: 
Description:CTE Block C Plot 4 in the Quebrada Prieta Research Area
Site Coordinates:
Longitude (degree): -65.8115Latitude (degree): 18.3232
Altitude (meter):476

Temporal, Geographic and/or Taxonomic information that applies to Data Table: CTE Soil Biogeochemistry 2014


Time Period
Begin:
2014-09-01
End:
2014-11-30

Project

Other Metadata

Additional Metadata

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