A DATA SET is a series of observations collected by the same methodology. Each data set should have documentation sufficient for someone unfamiliar with the research to replicate the study. Data sets may be broken into subsets (data files) that are discrete in space and time, in that order. The documentation for a data set should include all spatial and temporal subdivisions of the data.
(Data, Abstract, Methods, Variables
NOTES:
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PERSON(S) COMPLETING THIS FORM: |
E-MAIL ADDRESS: |
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Paul Klawinski |
DATA SET IDENTIFIER: Experimental Understory Food Web data in the El Verde area of the Luquillo Experimental Forest
PROJECT TITLE: Experimental Food Web Manipulation
PROJECT DESCRIPTION : Results of an experimental manipulation of the understory food web by controlling densities of Anolis lizards and Eleutherodatylus frogs and measuring the response of arthropods and plants (in terms of herbivory). These manipulations were performed by constructing exclosures that controlled the entrance and exit of anoles and coquies.
LTER CORE AREAS: Annotate all that apply(See online list)
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Primary Productivity |
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Population Dynamics |
LEF LTER 1 RESEARCH TOPIC:(Annotate all that apply) (See online list)
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Spatial and Temporal Distribution of Populations |
We define a data file as a component of a data set. A data set can have
only one data file or more. Basically, different data files have different data
structures or format.
DATA SET FILES (SUBSETS):
|
Data File No. |
Data File Identifier |
On-Line Filename |
Starting Date |
Periodicity of sample |
End Period |
|
1 |
Food Web Experiment |
September 1999 |
Monthly |
July 2000 |
RESEARCH LOCATION: The research plots are located in the vicinity of the El Verde Field Station. Block 1-4 are located south of the Quebrada Sonadora in the vicinity of the Bridge Trail and the trail to the "swimming hole". Block 5 is locate uphill from the bridge trail just south of Quebrada Sonadora (just southwest of Larry Woolbright's Coqui Census Plots). Block 6-7 are located west of the LFDP North of the trail to one of the MRCE plots. Block 8 is located just north of the Odum trail downhill from the radiation center. All these sites have been located with GPS and are found in the GIS data sets (http://ites.upr.edu/thomlinson/spatialdata/elverde.html).
INVESTIGATORS:
|
PRINCIPAL INVESTIGATORS |
E-MAIL address |
|
Paul Klawinski |
| Other Researchers | E-MAIL address |
| CONTACT PERSONS | Phone Number (Include area code) |
E-MAIL address |
| Paul Klawinski | 816-415-7628 | klawinksip@william.jewell.edu |
SOURCE OF FUNDING (SPONSOR): NSF DEB-9411973 and DEB-9705814
DATA SET ABSTRACT: These data include date, treatment, block number, number of coquies, number of anoles, number of insects collected on two sticky traps, number of insects counted on 4 Piper glabrescens and 4 Manilkara bidentata seedlings, percent herbivory on the aforementioned plants and number of spiders. All these measurements were taken within exclosures for closed controls, anole exclusions, coqui exclusions and total exclusions. Open controls were sampled from an area of similar dimension not enclosed in an exclosure.
DATA SET METHODS: In the spring and summer of 1999, 32 exclosures were constructed in 8 blocks distributed around tabonuco forest within relatively close proximity to the EVFS. Each block also contained an open control plot (without an exclosure). Exclosures were constructed with 2" diameter PVC pipes and ¼ inch plastic netting. The exclosures were approximately 9 m2 in area. The treatments are Open Control, Closed Control, Anole Exclusion, Coqui Exclusion and Total Exclusion. Anoles and coquies were stocked in the exclosures at the following levels: 5 Anolis gundlachi and 16 Eleutherodactylus coqui. In addition, four seedlings each of Piper glabrescens and Manilkara bidentata were planted in 4" diameter PVC tubes filed with a 50:50 mixture of commercially available topsoil and river sand. Every month, foliar insects, spiders, anoles and coquies were cenused in each exclosure. In addition, insects were collected on two sticky traps in each exclosure and herbivory was measured by calculating the amount of leaf area lost from recently expanded leaves.
REFERENCES:
CROSS-REFERENCES (other data sets related to this one):
SAMPLE LOCATION:
STORAGE SITES (of data files):
INVESTIGATOR'S ASSIGNED KEYWORDS: food web, anole, coqui, spider, aerial insect, foliar insect, herbivory
LEF LTER OFFICIAL KEYWORDS (See table): El Verde, Tabonuco, food web, insect, spider, reptile, amphibian, data set
PUBLICATIONS:
DISSEMINATION:UNRESTRICTED
RESTRICTED UNRESTRICTED
REASONS TO RESTRICT DATA IN THIS DATA SET BEYOND ITS TWO YEAR
POLICY PERIOD*:
*WILL HAVE TO BE APPROVED BY LTER PRINCIPAL INVESTIGATORS: J. ZIMMERMAN, A. LUGO , D.J. LODGE
FILING
_X__ "File" copy only : Data Management will only file an
electronic copy of the data file and its documentation
___ "Enter" data on-line : Data Management will be in charge
of entering the data on computer files (Contact Eda
C. Meléndez)
SITES DESCRIPTIONS: See above in Research Location section.
Geographical positional system (GPS) Coordinates for each location: (Visit http://ites.upr.edu/thomlinson/spatialdata/elverde.html to download these coordinates)
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location |
latitude |
longitude |
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|
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VARIABLES (ATTRIBUTES):
|
File Name or # above (all in which the variable appears) |
Food Web Experiment |
Food Web Experiment |
Food Web Experiment |
Food Web Experiment |
|
Abbreviation (as it appears on the data file) |
Year |
Month |
Treatment |
Block |
|
NAME OF VARIABLE |
Year |
Month |
Treatment |
Block |
|
DEFINITION OF VARIABLE |
Year in which sample was taken |
Month in which sample was taken |
Treatment imposed on plot |
Block identifier |
|
UNIT |
Year |
Month |
Text |
1 |
|
PRECISION |
1 |
Month |
Text |
1 |
|
RANGE OR LIST OF VALUES |
1999-2000 |
Pre = pre-treatment data Sept. 1999), Oct, Nov, Dec, Jan, Feb, Mar, Apr, May, Jun, Jul |
Control = Open Control, CC = Closed Control, AE = Anole Exclusion, CE = Coqui Exclusion, TE = Total Exclusion |
1-8 (see notes under Research Location above) |
|
DATA TYPE |
Year |
Month |
Text |
Number |
|
MISSING DATA CODES |
None |
None |
None |
None |
VARIABLES (ATTRIBUTES):
|
File Name or # above (all in which the variable appears) |
Food Web Experiment |
Food Web Experiment |
Food Web Experiment |
Food Web Experiment |
|
Abbreviation (as it appears on the data file) |
Anoles |
Coquies |
ST1 |
ST2 |
|
NAME OF VARIABLE |
Anoles |
Coquies |
Sticky Trap Insects 1 |
Sticky Trap Insects 2 |
|
DEFINITION OF VARIABLE |
Number of anoles per exclosure |
Number of coquies per exclosure |
Number of Insects caught on one of two sticky traps |
Number of Insects caught on two of two sticky traps |
|
UNIT |
1 |
1 |
1 |
1 |
|
PRECISION |
1 |
1 |
1 |
1 |
|
RANGE OR LIST OF VALUES |
0-8 |
0-21 |
9-89 |
11-68 |
|
DATA TYPE |
Count |
Count |
Count |
Count |
|
MISSING DATA CODES |
None |
None |
None |
None |
VARIABLES (ATTRIBUTES):
|
File Name or # above (all in which the variable appears) |
Food Web Experiment |
Food Web Experiment |
Food Web Experiment |
Food Web Experiment |
|
Abbreviation (as it appears on the data file) |
Piper 1 |
Piper 2 |
Piper 3 |
Piper 4 |
|
NAME OF VARIABLE |
Piper 1 Insects |
Piper 2 Insects |
Piper 3 Insects |
Piper 4 Insects |
|
DEFINITION OF VARIABLE |
Number of insects on one of four Piper glabrescens plants in a given exclosure |
Number of insects on one of four Piper glabrescens plants in a given exclosure |
Number of insects on one of four Piper glabrescens plants in a given exclosure |
Number of insects on one of four Piper glabrescens plants in a given exclosure |
|
UNIT |
1 |
1 |
1 |
1 |
|
PRECISION |
1 |
1 |
1 |
1 |
|
RANGE OR LIST OF VALUES |
0-60 |
0-58 |
0-55 |
0-55 |
|
DATA TYPE |
Count |
Count |
Count |
Count |
|
MISSING DATA CODES |
None |
None |
None |
None |
VARIABLES (ATTRIBUTES):
|
File Name or # above (all in which the variable appears) |
Food Web Experiment |
Food Web Experiment |
Food Web Experiment |
Food Web Experiment |
|
Abbreviation (as it appears on the data file) |
Manilkara 1 |
Manilkara 2 |
Manilkara 3 |
Manilkara 4 |
|
NAME OF VARIABLE |
Manilkara 1 Insects |
Manilkara 2 Insects |
Manilkara 3 Insects |
Manilkara 4 Insects |
|
DEFINITION OF VARIABLE |
Number of insects on one of four Manilkara bidentate plants in a given exclosure |
Number of insects on one of four Manilkara bidentate plants in a given exclosure |
Number of insects on one of four Manilkara bidentate plants in a given exclosure |
Number of insects on one of four Manilkara bidentate plants in a given exclosure |
|
UNIT |
1 |
1 |
1 |
1 |
|
PRECISION |
1 |
1 |
1 |
1 |
|
RANGE OR LIST OF VALUES |
0-42 |
0-39 |
0-37 |
0-51 |
|
DATA TYPE |
Count |
Count |
Count |
Count |
|
MISSING DATA CODES |
None |
None |
None |
None |
VARIABLES (ATTRIBUTES):
|
File Name or # above (all in which the variable appears) |
Food Web Experiment |
Food Web Experiment |
Food Web Experiment |
Food Web Experiment |
|
Abbreviation (as it appears on the data file) |
Piper 1H |
Piper 2H |
Piper 3H |
Piper 4H |
|
NAME OF VARIABLE |
Piper 1 Hebivory |
Piper 2 Hebivory |
Piper 2 Hebivory |
Piper 2 Hebivory |
|
DEFINITION OF VARIABLE |
Herbivory (%) on one of four Piper glabrescens plants in a given seedling |
Herbivory (%) on one of four Piper glabrescens plants in a given seedling |
Herbivory (%) on one of four Piper glabrescens plants in a given seedling |
Herbivory (%) on one of four Piper glabrescens plants in a given seedling |
|
UNIT |
0.01 |
0.01 |
0.01 |
0.01 |
|
PRECISION |
0.01 |
0.01 |
0.01 |
0.01 |
|
RANGE OR LIST OF VALUES |
2.39-42.96 |
2.08-37.89 |
1.52-50.25 |
1.58-42.84 |
|
DATA TYPE |
Continuous |
Continuous |
Continuous |
Continuous |
|
MISSING DATA CODES |
None |
None |
None |
None |
VARIABLES (ATTRIBUTES):
|
File Name or # above (all in which the variable appears) |
Food Web Experiment |
Food Web Experiment |
Food Web Experiment |
Food Web Experiment |
|
Abbreviation (as it appears on the data file) |
Manilkara 1H |
Manilkara 2H |
Manilkara 3H |
Manilkara 4H |
|
NAME OF VARIABLE |
Manikara 1 Herbivory |
Manikara 1 Herbivory |
Manikara 1 Herbivory |
Manikara 1 Herbivory |
|
DEFINITION OF VARIABLE |
Herbivory (%) on one of four Manilkara bidentata plants in a given seedling |
Herbivory (%) on one of four Manilkara bidentata plants in a given seedling |
Herbivory (%) on one of four Manilkara bidentata plants in a given seedling |
Herbivory (%) on one of four Manilkara bidentata plants in a given seedling |
|
UNIT |
0.01 |
0.01 |
0.01 |
0.01 |
|
PRECISION |
0.01 |
0.01 |
0.01 |
0.01 |
|
RANGE OR LIST OF VALUES |
0.97-29.90 |
0.96-34.41 |
0.73-32.58 |
0.39-29.47 |
|
DATA TYPE |
Continuous |
Continuous |
Continuous |
Continuous |
|
MISSING DATA CODES |
None |
None |
None |
None |
VARIABLES (ATTRIBUTES):
|
File Name or # above (all in which the variable appears) |
Food Web Experiment |
|
|
|
|
Abbreviation (as it appears on the data file) |
Spiders |
|
|
|
|
NAME OF VARIABLE |
Number of spiders |
|
|
|
|
DEFINITION OF VARIABLE |
Number of spiders counted in each exclosure each month |
|
|
|
|
UNIT |
1 |
|
|
|
|
PRECISION |
1 |
|
|
|
|
RANGE OR LIST OF VALUES |
7-73 |
|
|
|
|
DATA TYPE |
Count |
|
|
|
|
MISSING DATA CODES |
|
|
|
|
COMPUTATIONAL METHODS: NONE
|
Variable Name |
Formula |
|
|
|
DATE OF LAST REVIEW: January
26, 2006
DATE OF LAST ENTRY:2000
STAGE OF DATA SET MANAGEMENT (dates) :
RECEIVED: October 4, 2005
ENTERED: December 30, 2005
FILED:December 30, 2005
ON-LINE: January 26, 2006
REVIEWED BY RESEARCHER
FILING MEDIA:
NAME OF DOCUMENTATION FILE : Food Web Metadata.doc, lterdb122.htm
NAME OF ON - LINE CATALOG : LTERDBAS
RECORD # : 122
DOCUMENT TYPE : online
PRIORITY TO BE ENTERED: N/A