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:

DATA SET IDENTIFIER: Anoline Lizard Food Habits

PROJECT TITLE: Anole Population Dynamics

PROJECT DESCRIPTION: The population activity, abundance, density, and spatial distribution of anoline lizards (genus Anolis) were investigated in tabonuco rain forest of the Luquillo Mountains, Puerto Rico. A summary of the aspects of anole biology relevant to food web structure and organization in tabonuco forest were developed from these studies.

The anole activity in different habitats was studied in relation to the changes in canopy structure before and after Hurricane Hugo (September 1989). The drastic reduction in canopy structure immediately following the hurricane confined anole activity to the lower few meters of the forest. Anolis stratulus, a canopy species, apparently responded to changes in microclimate. Relative abundance estimates based on vertical transect surveys were A. stratulus (82%), A. gundlachi (11%), and A. evermanni (7%). Vertical surveys documented that A. stratulus was the most abundant anole species in the forest and inhabited the canopy at estimated population densities of 25,870~7005 (dry season) and 21,333~6638 (wet season) individuals/ha. Field studies demonstrated the importance of small diameter perches in the structural habitat of this species. Individual A. stratulus occupy small, ellipsoidal home ranges and/or territories (males only) with a mean diameter of 6.2 ñ 1.2 m layered within the 10-14 m thick canopy. This three-dimensional habitat partitioning has not previously been noted for a vertebrate species and may account for the ability of A. stratulus to reach extremely high population densities.

On Caribbean islands where there are no large animals such as those found in mainland ecosystems (e.g., tapirs, jaguars), anoles constitute a substantial portion of the total animal biomass. Their abundance, widespread ecological distribution, and functional role as higher order consumers make them important components of insular animal communities throughout the Caribbean. Recent studies have demonstrated their importance in structuring food webs on Caribbean islands (Schoener and Toft 1983; Schoener and Spiller 1987), and Reagan (1986) described the role of anoles as important consumers in the food web of tabonuco forest at El Verde.

LTER CORE AREAS: (Annotate all that apply)

Population Dynamics

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

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):

RESEARCH LOCATION: El Verde Study Area,340-360 m elev.,SW Quebrada Sonadora,Luquillo Experimental Forest

INVESTIGATORS:

PRINCIPAL INVESTIGATORS E-MAIL address

Douglas Reagan

Douglas_Reagan@urscorp.com

OTHER RESEARCHERS E-MAIL address

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

SOURCE OF FUNDING (SPONSOR): NSF - LEF LTER

DATA SET ABSTRACT: The stomach contents of 10 adult individuals of each of three anole species (Anolis gundlachi, A. evermanni, and A. stratulus) were collected to determine the number, type, and volume of prey consumed following Hurricane Hugo. Gut contents were identified to the lowest taxon possible and were measured.

DATA SET METHODS: Ten adult lizards of each of the three common species (see Abstract) were collected between 1200 and 1600 hours and killed immediately. Stomach were removed and their contents placed in 70% EtOH. Data recorded for each species included: date and time of capture, sex/age, SVL, weight, and comments (see variables descriptions under Mark and Resight Studies). Insects were identified under a dissecting scope and measured using an ocular micrometer.

REFERENCES:
Garrison, R.W. and D.P. Reagan. Food resource utilization of four species of Puerto Rican rain forest anoles.

CROSS-REFERENCES (other data sets related to this one): Lterdb01: Anole ground level transects (Bisley and El Verde),Lterdb02:Anoline Lizard Treefall Gap Transect Data , Lterdb04 Anole Vertical Transects (tower DATA), Lterdb05: Anole Mark and Resight Study, Lterdb06: Anole Grid Study;

SAMPLE LOCATION: Between the Quebrada Sonadora and the El Verde Field Station

STORAGE SITES (of data files): Data Manager's Cabinet DM333-001, Drawer #1

INVESTIGATOR'S ASSIGNED KEYWORDS: anole, lizards, reptiles, food habits

LEF LTER OFFICIAL KEYWORDS KEYWORDS(See table): Q SONADORA, EL VERDE, BISLEY WATERSHEDS (Q1 and Q2), TABONUCO, POPULATION DYNAMICS, REPTILES, PEER REVIEWED JOURNAL

PUBLICATIONS:
Reagan, D.P. 1996a. Anoline lizards. Pages 321-345 in D. P. Reagan and R. B. Waide, editors. The food web of a tropical rain forest. University of Chicago Press, Chicago, Illinois. (Abstract)

Reagan, D.P. 1996b. The role of amphibians and reptiles in a West Indian rain forest food web. Pages 217-227 in R. Powell and R. W. Henderson, editors. Contributions to West Indian Herpetology: a tribute to Albert Schwartz Volume 12. Society for the Study of Amphibians and Reptiles,. Contributions to Herpetology, Ithaca, New York.

DISSEMINATION: 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
___ "File" copy only : Data Management will only file an electronic copy of the data file and its documentation
X "Enter" data on-line : Data Management will be in charge of entering the data on computer files (Contact Eda C. Meléndez)

SITES DESCRIPTIONS: El Verde Study Area

Geographical positional system (GPS) Coordinates for each location:

location	latitude	longitude

VARIABLES (ATTRIBUTES):

FILE NAME OR #ABOVE (all in which the variable appears)	1	1	1	1
ABBREVIATION (as it appears on the data file)	STUDY	LOCATION	TIME	DATE
NAME OF VARIABLE	Type of study	Plot location	Time of observation	Date of observation
DEFINITION OF VARIABLE	Type of study related to season	Study area including direction followed when observing along a transect of tower	24-hour time when observations were done (hh:mm)	Date in (mm/dd/yy) format when observations were done
UNIT	NA	NA	NA	NA
PRECISION	NA	NA	NA	NA
RANGE OR LIST OF VALUES	Karen's Stream Lizards = dry season's study, Food Habits = wet season's study	Quebrada Prieta pool (0)-(8), El Verde Below path, El Verde, Bisley	12:00-13:35
DATA TYPE	alphabetic	alphanumeric	datetime	datetime
MISSING DATA CODES	none	none	none	none

VARIABLES (ATTRIBUTES):

VARIABLES (ATTRIBUTES):

VARIABLES (ATTRIBUTES):

FILE NAME OR #ABOVE (all in which the variable appears)	1	1
ABBREVIATION (as it appears on the data file)	COLLECTOR	COMMENTS
NAME OF VARIABLE	List of data collectors	Additional information
DEFINITION OF VARIABLE	List of persons doing the observations and annotating the datatail	Comments, prey length, miscellaneous observations, including color of enamel used, maximum length in mm of the prey item
UNIT
PRECISION
RANGE OR LIST OF VALUES	Reagan = Douglas Reagan, D. Reagan = Douglas Reagan, Reagan, Garcia = Douglas Reagan and García
DATA TYPE	alphabetic	alphanumeric
MISSING DATA CODES	none

Observations:

COMPUTATIONAL METHODS:

DATE OF LAST REVIEW: July 2, 2007
DATE OF LAST ENTRY: 1992
STAGE OF DATA SET MANAGEMENT (dates):
RECEIVED ENTERED: 7/90
FILED ON-LINE: 8/90
REVIEWED BY RESEARCHER:3/18/91
FILING MEDIA:
NAME OF DOCUMENTATION FILE: lterdb24.htm
NAME OF ON - LINE CATALOG: LTERDBAS
RECORD #: 24
DOCUMENT TYPE: paper only
PRIORITY TO BE ENTERED: none

Rev. date of this form: 15 July 2001