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:

• Add rows to tables or lines to paragraphs as you need them for entering your data.
• Contact emelendez@lternet.edu if you have any question.
• See online Guidelines (http://luq.lternet.edu/datamng/imdocs/division.html) to help you fill this form

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

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

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

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

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

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