LUQ LTER DATA SETS DOCUMENTATION FORM
ON-LINE VERSION

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:

PERSON(S) COMPLETING THIS FORM: E-MAIL ADDRESS:

Lawrence Walker

walker@lternet.edu

Eda C. Melendez-Colom

emelendez@lternet.edu

DATA SET IDENTIFIER : Landslide Removal Experiment vegetation cover and pole touches

PROJECT TITLE : Landslide Removal Experiment

PROJECT DESCRIPTION :
The LRE experiment is a series of vegetation removals on 10 landslides designed to determine what mechanisms drive landslide succession. Three types of removals were conducted:

a) removal of Gleicheniaceae ferns (GLE): landslides ES9, ES13, J3, and MY3 (as with my other work, ES stands for slides in the Espiritu Santo drainage, J is for Jimenez, MY is for Mameyes, and RB is for Rio Blanco).
b) removal of pioneer woody plants (PIO): ES3, MY6, RB10, RB11
c) removal of Cyathea tree ferns: RB1, RB2
On each landslide there are two removal plots and two control plots as follows (R=removal, blank = control):
PlotNo. J3 ES9 ES13 MY3 ES3 MY6 RB10 RB11 RB1 RB2
1 r       r r   r r  
2   r r r     r     r
3   r r   r     r    
4 r     r   r r   r r

LTER CORE AREAS: (Annotate all that apply)(See online list)

Primary productivity

LEF LTER 1 RESEARCH TOPIC: (Annotate all that apply)(See online list)

Gap revegetation


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
LRE pole touch data - Nov 1997 Walkerlrepoletouch-nov97.txt  Nov 1997
once
Nov 1997
2
LRE pole touch data- May 1998 Walkerlrepoletouch-may98.txt May 1998
once
May 1998
3
LRE pole touch data- Jan 1999 Walkerlrepoletouch-jan99.txt Jan 1999
once
Jan 1999
4
LRE pole touch data- Jun 1999 Walkerlrepoletouch-jun99.txt Jun 1999
once
Jun 1999
5
LRE pole touch data- Jan 2000 Walkerlrepoletouch-jan00.txt Jan 2000
once
Jan 2000
6
LRE pole touch data- May 2000 Walkerlrepoletouch-may00.txt May 2000
once
May 2000
7
LRE vegetation cover data- Nov 97 lrevegcovernov97.xls
(Contains 4 data files for each of the 20 landslides = 40 data files.) 

(See text files)
Nov 1997
once
Nov 1997
8
LRE vegetation cover data- May 98 lrevegcovermay98.xls
(Contains 4 data files for each of the 20 landslides = 40 data files.)

(See text files)
May 1998
once
May 1998
9
LRE vegetation cover data- Jan 99 lrevegcoverjan99.xls
(Contains 4 data files for each of the 20 landslides = 40 data files.)

(See text files)
Jan 1999
once
Jan 1999
10
LRE vegetation cover data- Jun 99 lrevegcoverjun99.xls
(Contains 4 data files for each of the 20 landslides = 40 data files.)

(See text files)
Jun 1999
once
Jun 1999
11
LRE vegetation cover data- Jan 00 lrevegcoverjan00.xls
(Contains 4 data files for each of the 20 landslides = 40 data files.)

(See text files)
Jan 2000
once
Jan 2000
12
LRE vegetation cover data- May 00 Lrevegcovermay00.xls
(Contains 4 data files for each of the 20 landslides = 40 data files.)

(See text files)
May 2000
once
May 2000

RESEARCH LOCATION: Ten of the Revegetation Landslides : J3, ES9, MY3, ES3, MY6, RB10, RB11, RB1, and RB2 (See Cross Reference part to get to re-vegetation Data Sets)

 

INVESTIGATORS:
PRINCIPAL INVESTIGATORS
E-MAIL address

Lawrence Walker

walker@lternet.edu

OTHER RESEARCHERS
E-MAIL address

Fred Landau

CONTACT PERSONS
E-MAIL address
Phone Number (Include area code)

Lawrence Walker

walker@lternet.edu

(702)895-3196


SOURCE OF FUNDING (SPONSOR): NSF - LEF LTER

DATA SET ABSTRACT: The purpose of this data set is to document recovery of vegetation in removal plots in landslides in the Luquillo Experimental Forest (LEF.)

DATA SET METHODS: For the pole touch data file, data was collected on: the following dates: 11/97, 5/98, 1/99, 6/99, 1/00 and 5/00. Removals occurred in 1/98, so we have one measurement before the removals and 5 after. We measured the height intervals in meters for the pole touches using the same method of measurement that we have been using for all these years with the other landslides. The actual counts of touches in each height interval (maximum for GLE is 8, for PIO is 12 and for CYA is 36) was annotated and the percentages of possible counts was calculated based on the maxima just noted.

There are a variety of habitat and species variables on the left and cover classes for each (cover classes: 0 = none, 1 = 1-25% cover, 2 = 26-50, 3 = 51-75, 4 = 75-100). In addition we have listed heights in cm of certain woody species and tree ferns (See list). Occasionally there are note on the far right about which fern or which herb is dominant.

REFERENCES:

CROSS-REFERENCES (other data sets related to this one): LTERDBAS 15: (Small landslide plots at the Luquillo Experimental Forest); LTERDBAS 18: (Large landslide plots at the Luquillo Experimental Forest); LTERDBAS 36: Landslide Revegetation Canopy Measurements & Cover Estimates

SAMPLE LOCATION:

STORAGE SITES (of data files): ITES, Data Manager's File DM-002 , Drawer #4

INVESTIGATOR'S ASSIGNED KEYWORDS:

LEF LTER OFFICIAL KEYWORDS (See table): LANDSLIDE PLOTS, LEF, DISTURBANCE, PLANTS

PUBLICATIONS:

DISSEMINATION: UNRESTRICTED: Please contact the investigator, L. Walker, when downloading the data

REASONS TO RESTRICT DATA IN THIS DATA SET BEYOND ITS TWO YEAR POLICY PERIOD

*:*WILL HAVE TO BE APPROVED BY LTER PRINCIPAL INVESTIGATORS: N. BROKAW, J. ZIMMERMAN, A. LUGO , W. MCDOWELL, W. SILVER

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: Each of the extensive and intensive landslides has plots 2 X 5 m distributed along transect lines at 10 m intervals from the upper lip of the slide. The intensive slides (ES-1, ES-2, and RB-2 (until 1989), have a 2 X 1 m seedling subplot along the lower edge of the plot)

Geographical positional system (GPS) Coordinates for each location:

location

latitude

longitude

 

 

 

 

 

 


VARIABLES (ATTRIBUTES):

FILE NAME OR #ABOVE (all in which the variable appears)

7-12 7-12 7-12 7-12

ABBREVIATION (as it appears on the data file)

Cover (0-4) Remarks Number Heights

NAME OF VARIABLE

cover class woody species and tree ferns species code list dominant species number of individuals woody species and tree ferns height

DEFINITION OF VARIABLE

cover class for each habitat List of species codes of certain woody species and tree ferns Number of individuals of the dominant species in that habitat Height in cm of certain woody species and tree ferns

UNIT

      cm

PRECISION

       

RANGE OR LIST OF VALUES

0 = none, 

1 = 1-25% cover, 

2 = 26-50, 

3 = 51-75, 

4 = 75-100

     

DATA TYPE

alphanumeric alphabetic integer real

MISSING DATA CODES

none blank blank blank


VARIABLES (ATTRIBUTES):

FILE NAME OR #ABOVE (all in which the variable appears)

1-6 1-6 1-6

ABBREVIATION (as it appears on the data file)

landslide plot {0-.5,.5-1, 1-1.5, 1.5-2, 2.0-3, 3.0-4, 4.0-5, 5.0-6, 6.0-8, 8.0-10, 10.0-12, 12.0-15, 15.0-20, 20.0-25}

NAME OF VARIABLE

Landslide identifier Plot identifier Count of touches

DEFINITION OF VARIABLE

Name of landslide as used in the Landslide Revegetation Project A number assigned to the plot on each landslide, two of which were removal plots and two control plots ( See Project Description) counts of touches in eachheight interval in meters for the pole touches

UNIT

     

PRECISION

     

RANGE OR LIST OF VALUES

ES13, ES3, ES9, J3, MY3, MY6, RB1, RB10, RB11, RB2 1,…,4 0, 1, …

DATA TYPE

alphabetic integer integer

MISSING DATA CODES

none none blank

 

COMPUTATIONAL METHODS:
Variable Name Formula

 

 



FOR DATA MANAGER USE ONLY

DATE OF LAST REVIEW: May 12, 2005
DATE OF LAST ENTRY : May 2000
STAGE OF DATA SET MANAGEMENT (dates) :
RECEIVED ENTERED: Nov 2000
FILED ON-LINE Feb 28, 20001
REVIEWED BY RESEARCHER
FILING MEDIA :
NAME OF DOCUMENTATION FILE : lterdb112.doc,.htm
NAME OF ON - LINE CATALOG : LTERDBAS
RECORD # : 112
DOCUMENT TYPE : magnetic media (only)
PRIORITY TO BE ENTERED : N/A

 

Rev. date of this form: 8 June 2001 / 20 May 2003 / 16 March 2004