lterdb158-Shrimp populations in Quebrada Prieta (Pools 0,1), (El Verde)

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:

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.

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

Todd Crowl	tcrowl@lternet.edu
Eda C. Melendez-Colom	emelendez@lternet.edu

DATA SET IDENTIFIER: Physical and chemical attributes of Quebrada Prieta, Bisley 3, Bisley 5, and Toronja related to of shrimp populations measurements

PROJECT TITLE: Fresh Water Shrimp Population Dynamics

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

Inorganic Input

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):
NOTE: Please contact Alan Covich (acovich@lternet.edu) for the use of this data file.

Data File No.	Data File Identifier	On-Line Filename	Starting Date	Periodicity of sample	End Period
1	Pool physical attributes and shrimp densities	Physicalattributesandshrimp.txt	1988	once	2005
2	Stream chemistry	StreamChemistry.txt	1988	once	2005

RESEARCH LOCATION: Rio Espiritu Santo Watershed in the El Verde Area Quebrada Prieta and Quebrada Toronja; Rio Mameyes Watershed on the Bisley area Quebrada Bisley 3 and Quebrada Bisley 5.

INVESTIGATORS:

PRINCIPAL INVESTIGATORS E-MAIL address

Alan Covich	acovich@lternet.edu
Todd Crowl	tcrowl@lternet.edu

OTHER RESEARCHERS E-MAIL address

Omar Perez	operez-reyes@lternet.edu
William McDowell	wmcdowell@lternet.edu
Catherine Hein	clhein@gmail.com
Matt J. Townsend

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

Alan Covich

acovich@lternet.edu

W: (706) 353-2401

SOURCE OF FUNDING (SPONSOR): NSF-LTER

DATA SET ABSTRACT: Physical parameters, densities and sizes of two species of freshwater shrimps (Atya lanipes and Xiphocaris elongata) in four headwater streams (Quebrada Prieta, Toronja, Bisley 3 and Bisley 5) have been censused 2 times yearly since 1998 to determine the effects of predatory fishes on shrimp size and spatial distributions of pools relative to locations of waterfalls.

DATA SET METHODS: Shrimps are sampled during two periods each year (period 1 = March-April; period 2 = November-December). Wire minnow traps, baited with cat food are placed into the stream during the late afternoon and retrieved the following morning. All shrimps from each trap are enumerated by species and released.

REFERENCES:
Covich, A. P., D. A. Kikkert and T. A. Crowl. 2009. Upstream migration of amphidromous shrimps in the Luquillo Experimental Forest, Puerto Rico: temporal patterns and environmental cues. Journal of North American Benthological Society 28(1):233–246.

Crowl, T. A., V. Welsh, and T. Heartsill-Scalley. 2006. Effects of different types of conditioning on rates of leaf-litter shredding by Xiphocaris elongata, a Neotropical freshwater shrimp. Journal of North American Benthological Society 25(1):198–208.

Townsend, M. J., T. A. Crowl, R. Phillips, A. P. Covich and F. N. Scatena. 2002. Indirect and direct abiotic controls on a species-poor stream insect assemblage. Verh. Internat. Verein. Limnol. 28: 1-4.

Crowl, T. A., A. P. Covich, F. N. Scatena, R. Phillips, M. J. Townsend and D. K. Vinson. 2002. Particulate organic matter dynamics in tropical headwater streams: a comparison of biotic and abiotic factors. Verh. Internat. Verein. Limnol. 28: 1-5.

Crowl, T. A. and A. P. Covich. 1994. Responses of a freshwater shrimp to chemical and tactile stimuli from a large decapod predator. . Journal of North American Benthological Society 13(2):291-298.

Crowl, T. A., N. Bouwes, M. J. Townsend, A. P. Covich, and F. N. Scatena. 2000. Estimating the potential role of freshwater shrimp on an aquatic insect assemblage in a tropical headwater stream: a bioenergetics approach. Verh. Internat. Verein. Limnol. 27:1-5.

Covich, A. P., T. A. Crowl, S. L. Johnson, D. Varza, and D. L. Certain. 1991. Post-Hurricane Hugo Increases in Atyid Shrimp Abundances in a Puerto Rican Montane Stream. Biotropica 23:448-454.

Covich, A. P., T. A. Crowl, S. L. Johnson, and M. Pyron. 1996. Distribution and Abundance of Tropical Freshwater Shrimp Along a Stream Corridor: Response to Disturbance. Biotropica 28:484-492.

Covich, A.P., T. A. Crowl, C. Hein, M.J. Townsend and W. H.Mcdowell. 2009. Predator–prey interactions in river networks: comparing shrimp spatial refugia in two drainage basins. Freshwater Biology 54: 450-465.

Covich, A.P., T.A. Crowl and F.N. Scatena. 2003. Effects of extreme low flows on freshwater shrimps in a perennial tropical stream. Freshwater Biology 48:1199-1206.

Covich, A.P., T. A. Crowl and F. N. Scatena. 2000. Linking habitat stability to floods and droughts: effects on shrimp in montane streams, Puerto Rico. Verh. Internat. Verein. Limnol. 27:1-5.

Covich, A. P., T. A. Crowl, J. E. Alexander, Jr., and C. C. Vaughn. 1994. Predator-Avoidance Responses in Freshwater Decapod-Gastropod Interactions Mediated by Chemical Stimuli. Journal of the North American Benthological Society 13:283-290.

Covich, A. P., T. A. Crowl, and T. Heartsill-Scalley. 2006. Effects of Drought and Hurricane Disturbances on Headwater Distributions of Palaemonid River Shrimp (Macrobrachium spp.) in the Luquillo Mountains, Puerto Rico. Journal of the North American Benthological Society 25:99-107.

Cross, W.F., A.P. Covich, T.A. Crowl, J.P. Benstead and Alonso Ramirez. 2008. Secondary production, longevity and resource Consumption rates of freshwater shrimps in two tropical streams with contrasting geomorphology and food web structure. Freshwater Biology 53:2504–2519.

Crowl, T. A., W. H. McDowell, A. P. Covich, and S. L. Johnson. 2001. Freshwater Shrimp Effects on Detrital Processing and Nutrients in a Tropical Headwater Stream. Ecology 82:775-783.

CROSS-REFERENCES (other data sets related to this one): LTERDBAS #55: Shrimp and stream pool raw data; LTERDBAS#54: Shrimp populations in Quebrada Prieta (Pools 0, 8, 9, 15), (El Verde)

SAMPLE LOCATION:

STORAGE SITES (of data files): ITES, Data Mngr.'s Cabinet DM333-01, Drawer #3

INVESTIGATOR'S ASSIGNED KEYWORDS: recolonization,disturbance,atya lanipes,xiphocarts elongata,macrobrachium carcinus,fish, freshwater shrimp, decapods, streams, invertebrates, water chemistry

LEF LTER OFFICIAL KEYWORDS (See table): EL VERDE, Q PRIETA, BISLEY 3, BISLEY 5, HEADWATER STREAM , TABONUCO, DISTURBANCE, COLONIZATION, DECAPODS, PEER REVIEWED JOURNAL

PUBLICATIONS:
Covich, A. P., D. A. Kikkert and T. A. Crowl. 2009. Upstream migration of amphidromous shrimps in the Luquillo Experimental Forest, Puerto Rico: temporal patterns and environmental cues. Journal of North American Benthological Society 28(1):233–246.

Crowl, T. A. and A. P. Covich. 1994. Responses of a freshwater shrimp to chemical and tactile stimuli from a large decapod predator. . Journal of North American Benthological Society 13(2):291-298.

Covich, A. P., T. A. Crowl, S. L. Johnson, D. Varza, and D. L. Certain. 1991. Post-Hurricane Hugo Increases in Atyid Shrimp Abundances in a Puerto Rican Montane Stream. Biotropica 23:448-454.

Covich, A. P., T. A. Crowl, S. L. Johnson, and M. Pyron. 1996. Distribution and Abundance of Tropical Freshwater Shrimp Along a Stream Corridor: Response to Disturbance. Biotropica 28:484-492.

Covich, A.P., T.A. Crowl and F.N. Scatena. 2003. Effects of extreme low flows on freshwater shrimps in a perennial tropical stream. Freshwater Biology 48:1199-1206.

Covich, A.P., T. A. Crowl and F. N. Scatena. 2000. Linking habitat stability to floods and droughts: effects on shrimp in montane streams, Puerto Rico. Verh. Internat. Verein. Limnol. 27:1-5.

Crowl, T. A., W. H. McDowell, A. P. Covich, and S. L. Johnson. 2001. Freshwater Shrimp Effects on Detrital Processing and Nutrients in a Tropical Headwater Stream. Ecology 82:775-783.

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: N. BROKAW, A. LUGO

SITES DESCRIPTIONS: El Verde Study Area, Pool 0, Elevation 330 m, Quebrada Prieta (on Ox-cart Trail)

Geographical positional system (GPS) Coordinates for each location:

location	latitude	longitude
Bisley 3 Headwater Pool in Mameyes Watershed
Bisley 5 Headwater Pool in Mameyes Watershed
Toronja Headwater Pool in Rio Espiritu Santo Watershed
Prieta Headwater Pool in Rio Espiritu Santo Watershed

VARIABLES (ATTRIBUTES):

FILE NAME OR #ABOVE (all in which the variable appears)	1 , 2	1	1	1	1	1
ABBREVIATION (as it appears on the data file)	Stream	DOC_mgl-1	NO3-N_µgl-1	NH4-N_µgl-1	DON_µgl-1	PO4-P_µgl-1
NAME OF VARIABLE	Stream name	Dissolved organic carbon	Nitrate	Ammonium	Dissolved organic nitrogen	Phosphorus
DEFINITION OF VARIABLE	Name of the stream where the water sample was taken.	Mean concentration of dissolved organic carbon in the water.	Mean concentration of nitrate in the water.	Mean concentration of ammonium in the water.	Mean concentration of dissolved organic nitrogen dissolved in the water.	Mean concentration of phosphorus in the water.
UNIT		milligramsPerLiter	microgramsPerLiter	microgramsPerLiter	microgramsPerLiter	microgramsPerLiter
PRECISION
RANGE OR LIST OF VALUES	Prieta, Toronja, Bisley 3, Bisley 5
DATA TYPE	alphanumeric	decimal	decimal	decimal	decimal	decimal
MISSING DATA CODES

VARIABLES (ATTRIBUTES):

FILE NAME OR #ABOVE (all in which the variable appears)	1	1	1	1	1	1
ABBREVIATION (as it appears on the data file)	Cl_mgl-1	SO4-S_mgl-1	Na_mgl-1	K_mgl-1	Mg_mgl-1	Ca_mgl-1
NAME OF VARIABLE	Chlorine	Sulfate	Sodium	Potassium	Magnesium	Calcium
DEFINITION OF VARIABLE	Mean concentration of chlorine in the water.	Mean concentration of sulfate in the water.	Mean concentration of sodium in the water.	Mean concentration of potassium in the water.	Mean concentration of magnesium in the water.	Mean concentration of calcium in the water.
UNIT	milligramsPerLiter	microgramsPerLiter	milligramsPerLiter	microgramsPerLiter	milligramsPerLiter	microgramsPerLiter
PRECISION
RANGE OR LIST OF VALUES
DATA TYPE	decimal	decimal	decimal	decimal	decimal	decimal
MISSING DATA CODES

VARIABLES (ATTRIBUTES):

FILE NAME OR #ABOVE (all in which the variable appears)	2	2	2	2	2	2
ABBREVIATION (as it appears on the data file)	POOL_ELEVATION_CODE	MAX DEPTH	MEAN DEPTH	MEAN WIDTH	XIPHOCARIS DENSITY	ATYA DENSITY
NAME OF VARIABLE	Pool and elevation code	Maximum depth	Mean depth	Mean Width	Xiphocaris density	Atya density
DEFINITION OF VARIABLE	A two letter code consisting of a letter and a number representing the location of a long-term pool in the Quebrada Prieta, Toronja, Bisley 3, and measurements taken at the pool	Deepest point in the pool	Mean of five depths measurements taken at the pool .	Mean of three widths measurements taken at the pool.	Total number of freshwater Xiphocaris elongata shrimps captured divided by the area from the corresponding pool in the Quebrada Prieta Toronja, Bisley 3, or Bisley. Record is missing when data is missing.	Total number of freshwater Atya lanipes shrimps captured divided by the area from the corresponding pool in the Quebrada Prieta Toronja, Bisley 3, or Bisley. Record is missing when data is missing.
UNIT
PRECISION
RANGE OR LIST OF VALUES	U1= upper elevation 1, U2= upper elevation 2, M1= middle elevation 1, M2= middle elevation 2, L1= low elevation 1, L2= low elevation 2
DATA TYPE	alphanumeric	decimal	decimal	decimal	decimal	decimal
MISSING DATA CODES

COMPUTATIONAL METHODS:

Variable Name	Formula

FOR DATA MANAGER USE ONLY

DATE OF LAST REVIEW: February 9, 2010
DATE OF LAST ENTRY: December 2008
STAGE OF DATA SET MANAGEMENT (dates):
RECEIVED ENTERED: 3/5/1997
FILED ON-LINE: 4/28/1997
REVIEWED BY RESEARCHER
FILING MEDIA:
NAME OF DOCUMENTATION FILE: covitodd.htm
NAME OF ON - LINE CATALOG: LTERDBAS
RECORD #: 54
DOCUMENT TYPE: data set (magnetic media)
PRIORITY TO BE ENTERED: N/A

Rev. date of this form: 15 July 2001