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:
| Karen Buzby | |
|
Eda C. Melendez-Colom |
DATA SET IDENTIFIER: Shrimp populations variability in numbers and sizes in response to disturbance and seasons on 20 pools along the reach of Quebrada Prieta, Luquillo Experimental Forest
PROJECT TITLE: Fresh Water Shrimp Population Dynamics (Shrimp population monitoring)
PROJECT DESCRIPTION: Spatial and temporal patterns of abundances for coexisting species: different intensities and frequencies of disturbances can alter spatial and temporal patterns of abundances for coexisting species. To determine if these different hydrologic regimes altered distributions of populations, we compared shrimp densities during different periods of time. There were significant differences in the relationships between locations of stream pools along an elevational gradient (300 to 470 m) and the abundances of two species of shrimp (Atya lanipes and Xiphocaris elongata) during the following three periods: pre-Hurricane Hugo (20 mo), post-Hurricane Hugo (50 mo), and low-flow (12 mo).
Mechanisms that likely cause different patterns of distribution (See Abstract) include avoidance of predators coupled with active preference by prey species for pool habitats with low frequency of washout by storm flows, and with sufficient storage of food resources (microbially conditioned leaf detritus).
LTER CORE AREAS: (Annotate all that apply)
| Population Dynamics |
LEF LTER 1 RESEARCH TOPIC: (Annotate all that apply)
|
Spatial
and temporal distribution of population.
|
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 | Shrimp population in all pools July 10 to 11, 1990 and July 31 to August 1, 1990 | pshrimp.txt | July 10, 1990 | Approximately every 3 weeks | August 1 , 1990 |
INVESTIGATORS:
PRINCIPAL INVESTIGATORS E-MAIL address
| Karen Buzby |
OTHER RESEARCHERS E-MAIL address
CONTACT PERSONS E-MAIL address Phone Number (Include area code)
|
E.C.Melendez-Colom |
787-789-6556 (4943) |
SOURCE OF FUNDING (SPONSOR): LTER
DATA SET ABSTRACT: Shrimp populations were monitored at approximately 3 week intervals to determine the variability in numbers and sizes of each species in response to disturbance and seasons.
DATA SET METHODS: 20 pools along the reach were identified and include as much variety in pool morphology as possible. Due to variablity in flow conditions not all of the pools were sampled at each time point. 1-4 minnow traps, depending on pool size, were baited with Moist Meals cat food (chicken flavor) and placed in each pool late in the afternoon at approximately 3 week intervals. The reach was broken into two halves and the upper section trapped one day followed by the lower section on the next day. The traps were checked in the morning; all shrimp caught were identified to species. Carapace length and if the shrimp was gravid were recorded. Shrimp were returned to the pool they were caught in after all data was collected.
REFERENCES:
CROSS-REFERENCES (other data sets related to this one):
SAMPLE LOCATION: N/A
STORAGE SITES (of data files): 303 Illick Hall, SUNY-CESF, Syracuse,
NY 13210
INVESTIGATOR'S ASSIGNED KEYWORDS: Shrimp, Atya, Xiphocaris, Macrobrachium
LEF LTER OFFICIAL KEYWORDS:(See table) Q PRIETA, RIVER, DISTURBANCE, SEASONALITY, DECAPODS, PEER REVIEWED JOURNAL
PUBLICATIONS:
Ferrington, L.C., K.M. Buzby, and E.C.
Masteller. 1993. Composition and temporal abundance of Chironomidae emergence
from a tropical stream at El Verde, Puerto Rico. Journal of the Kansas Entomological
Society 66:167-180
Gelhaus, J.K., E.C. Masteller, and K.M. Buzby. 1993. Emergence composition and phenology of Tipulidae (Diptera) from a tropical rainforest stream. Journal of the Kansas Entomological Society 66:160-167
Masteller, E.C. and K.M. Buzby. 1993. Composition and temporal abundance of aquatic insect emergence from a tropical rainforest stream, Quebrada Prieta, at El Verde, Puerto Rico. Introduction. Journal of the Kansas Entomological Society 66:133-139
Masteller, E.C. and K.M. Buzby. 1993. Emergence phenology of Empididae, Ceratopogonidae, and simulidae (Diptera) from a tropical rainforest stream at El Verde, Puerto Rico. Journal of the Kansas Entomological Society 66:187-191
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
_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 DESCRIPTION: Reach on Quebrada Prieta which starts where the trail from the Hwy 186 bridge over Quebrada Sonadora crosses the stream and ends approximately 125 meters upstream. A map will be produced with the pool locations marked to be added to this file.
Geographical positional system (GPS) Coordinates for each location:
|
location |
latitude |
longitude |
| Quebrada Prieta reach (where the trail from the Sonadora bridge on Hwy 186 crosses the stream) |
|
FILE NAME OR #ABOVE (all in which the variable appears) |
All | All | All | All | All |
|
ABBREVIATION (as it appears on the data file) |
|||||
|
NAME OF VARIABLE |
Pool Number | Trap | Species | Carapace lenght | Gravid |
|
DEFINITION OF VARIABLE |
Pool number refers to a specific pool along the reach that I am working in. It identifies a location. | Trap refers to the trap number the shrimp was caught in. | Species is the species of shrimp. | Measurement of shrimp carapace length from the tip of the rostrum to the most posterior point on the dorsal surface. | Gravid
identifies if the individual is gravid. Some data files also identify the
color of the eggs. |
|
UNIT |
N/A | N/A | N/A | Millimeters | N/A |
|
PRECISION |
N/A | N/A | N/A | 0.1 miilimeters | N/A |
|
RANGE OR LIST OF VALUES |
1 - 22 | 1 - 4 |
A = Atya lanipes |
4.5 - 60 millimeters | Y
= Gravid GG = Gravid with gray eggs GT = Gravid with eggs between gray and red GR = Gravid with red eggs. |
|
DATA TYPE |
Numeric|Integer | Numeric|Integer | Alphanumeric | Numeric|Real | Alphanumeric |
|
MISSING DATA CODES |
Blank space | Blank space | Only those
individuals who are gravid had any information recorded for this variable.
A blank space means that the individual was not gravid. No provision was
made for missing data. |
Observations: Data is entered as a paradox file. As
with all data files within this data set the date the data was collected is
included in the name of the file.
COMPUTATIONAL METHODS:
| Variable Name | Formula |
FOR DATA MANAGER USE ONLY
DATE OF LAST REVIEW:
March 7, 2006
DATE OF LAST ENTRY: August 1, 1990
STAGE OF DATA SET MANAGEMENT (dates):
RECEIVED: August 1990
ENTERED: August 1990
FILED ON-LINE: May 13, 1990 (incomplete data)
REVIEWED BY RESEARCHER
FILING MEDIA:
NAME OF DOCUMENTATION FILE: lterdb120.htm
NAME OF ON - LINE CATALOG: LTERDBAS
RECORD #: 120
DOCUMENT TYPE: magnetic media
PRIORITY TO BE ENTERED: N/A
Rev. date of this form: 15 July 2001