Data Package Metadata View Summary

The Interaction between Competition and Predation: A Meta-analysis of Field Experiments

General Information

Data Package:
Local Identifier:	edi.533.2
Title:	The Interaction between Competition and Predation: A Meta-analysis of Field Experiments
Alternate Identifier:	DOI PLACE HOLDER
Abstract:	Ecologists working with a range of organisms and environments have carried out manipulative field experiments that enable us to ask questions about the interaction between competition and predation (including herbivory) and about the relative strength of competition and predation in the field. Evaluated together, such a collection of studies can offer insight into the importance and function of these factors in nature. Therefore, this dataset was created by combining the results of 20 articles reporting on 39 published field experiments on the interaction between competition and predation. These experiments tested whether the presence of predators affects the intensity of competitive effects. The combined data was then analyzed using a factorial meta-analysis technique, the results of which were published in the study titled The Interaction between Competition and Predation: A Meta‐analysis of Field Experiments (Gurevitch et al., 2000).
Publication Date:	2020-06-05

Time Period

Begin:

1979

End:

2000

People and Organizations
Contact:	Gurevitch, Jessica (Department of Ecology and Evolution, Stony Brook University, Stony Brook, NY, USA) [ email ]
Creator:	Gurevitch, Jessica (Department of Ecology and Evolution, Stony Brook University, Stony Brook, NY, USA)
Creator:	Morrison, Janet A. (Department of Biology, The College of New Jersey, Ewin, NJ, USA)
Creator:	Hedges, Larry Vernon (University of Chicago, Chicago, IL, USA Department of Statistics, Northwestern University, Evanston, IL, USA)

Data Entities
Data Table Name:	density
Description:	Data from experiments which used density as the response variable.
Data Table Name:	growth rate
Description:	Data from experiments which used growth rate as the response variable.
Data Table Name:	mortality
Description:	Data from experiments which used mortality as the response variable.
Other Name:	protocol.pdf
Description:	Formatted methods

Detailed Metadata

Data Entities

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/533/2/35f3675343000d6bb5f10ce451a571a4
Name:	density
Description:	Data from experiments which used density as the response variable.
Number of Records:	19
Number of Columns:	68

Table Structure

Object Name:

PDen.csv

Size:

12727 bytes

Authentication:

2697b5d9fa3db9fac490551d4d574b4c Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

Column Name:

Author

Year

Journal

Latitude_region

Habitat

Competing_for

In_cages_etc

Variation_spatial

Variation_temporal

Variation_resource

Inter_intra

Measured_variable

Design_problems

Source_of_data

Exp_time_period

Predator_species

Pred_Organism_type

Pred_Trophic_level

1st_manip_comp

1st_comp_life_stage

1st_comp_organism_type

1st_comp_trophic_level

2nd_manip_comp

2nd_comp_life_stage

2nd_comp_organism_type

2nd_comp_trophic_level

Response_species

resp_sp_life_stage

resp_sp_organism_type

resp_sp_trophic_level

Prey__resp_comp_both

Enhancereduce_comp

Enhancereduce_pred

comp_1_natural_dens

comp_1_exper_dens

comp_2_natural_dens

comp_2_exper_dens

Y_(pc)

Y_(pe)

sd_(pc)

sd_(pe)

N_(pc)

N_(pe)

se_(pc)

se_(pe)

Y_(ac)

Y_(ae)

sd_(ac)

sd_(ae)

N_(ac)

N_(ae)

se_(ac)

se_(ae)

J(m)_for_d_p

d_p

s_2(d_p)

J(m)_for_d_a

d_a

s_2(d_a)

J(m)_for_d_I

d_I

s_2(d_I)

J(m)_for_d_R

d_R

s_2(d_R)

J(m)_for_d_H

d_H

s_2(d_H)

Definition:

First author of the study from which the data was taken

Year of publication of the study

Journal in which the study was published

Latitudinal region in which the study was carried out (e.g. tropics, temperate etc.)

Habitat in which the study was carried out

The resource which the study organisms were competing for

Whether the organisms were kept in enclosures or exclosures like cages, pens, etc. (if yes, the kind of enclosure/exclosure in mentioned)

Whether the study accounted for spatial variation

Whether the study accounted for temporal variation

Whether the study accounted for variation in resource availability

Whether interspecific competition or intraspecific competition (or both) was measured

The variable measured to quantify the density of the response species

Whether the study had any design problems (if yes, a short description of the problem is given)

Which part of the publication was the data taken from (e.g. figure 1, table 2 etc.)

Duration of the experiment

Species used as predator in the experiment

Broad taxonomic group which the predator belonged to (e.g. fish, copepod etc.)

Trophic level of the predator species

Species used as competitor in the experiment (competitor 1)

Life stage of the competitor species used for the experiment (e.g. larvae, adult, etc.)

Broad taxonomic group which the competitor belonged to (e.g. fish, copepod etc.)

Trophic level of the competitor species

Second competitor species (if any)

Life stage of the 2nd competitor species, if any, used for the experiment (e.g. larvae, adult, etc.)

Broad taxonomic group which the 2nd competitor species, if any, belonged to (e.g. fish, copepod etc.)

Trophic level of the 2nd competitor species, if any

The focal species or response speices, i.e. the species whose response to competition and predation was quantified

Life stage of the response species used for the experiment (e.g. larvae, adult, etc.)

Broad taxonomic group which the response species belonged to (e.g. fish, copepod etc.)

Trophic level of the response species

Whether the predator preyed on the response species, on the competitor or on both

Whether competition was enhanced or reduced as compared to natural conditions, in the competition manipulation treatment

Whether predation was enhanced or reduced as compared to natural conditions, in the predation manipulation treatment

Natural density of competitor 1

Density of competitor 1 in the competition manipulation treatment

Natural density of competitor 2

Density of competitor 2 in the competition manipulation treatment

Mean response of focal species to the control + predator present treatment (see table 1)

Mean response of focal species to the experimental + predator present treatment (see table 1)

Standard deviation of response of focal species to the control + predator present treatment

Standard deviation of response of focal species to the experimental + predator present treatment

Sample size used for measuring Ypc

Sample size used for measuring Ype

Standard error of Ypc

Standard error of Ype

Mean response of focal species to the control + predator absent treatment (see table 1)

Mean response of focal species to the experimental + predator absent treatment (see table 1)

Standard deviation of response of focal species to the control + predator absent treatment

Standard deviation of response of focal species to the experimental + predator absent treatment

Sample size used for measuring Yac

Sample size used for measuring Yae

Standard error of Yac

Standard error of Yae

Correction factor J(m) used in calculation of dp (see ‘calculations’ section of methods)

The Hedge’s d for effect of competition manipulation in the presence of predation, that is dp (see ‘calculations’ section of methods)

Variance of dp (see ‘calculations’ section of methods)

Correction factor J(m) used in calculation of da (see ‘calculations’ section of methods)

The Hedge’s d for effect of competition manipulation in the absence of predation, that is da (see ‘calculations’ section of methods)

Variance of da (see ‘calculations’ section of methods)

Correction factor J(m) used in calculation of dI (see ‘calculations’ section of methods)

The Hedge’s d for effect interaction between competition and predation, that is dI (see ‘calculations’ section of methods)

Variance of dI (see ‘calculations’ section of methods)

Correction factor J(m) used in calculation of dR (see ‘calculations’ section of methods)

The Hedge’s d for the average effect of competition, that is dR (see ‘calculations’ section of methods)

Variance of dR (see ‘calculations’ section of methods)

Correction factor J(m) used in calculation of dH (see ‘calculations’ section of methods)

The Hedge’s d for the average effect of competition, that is dH (see ‘calculations’ section of methods)

Variance of dH (see ‘calculations’ section of methods)

Storage Type:

string

float

string

float

Measurement Type:

nominal

ratio

nominal

ratio

Measurement Values Domain:

Definition

First author of the study from which the data was taken

Unit	nominalYear
Type	natural
Min	1974
Max	1994

Definition

Journal in which the study was published

Definition

Latitudinal region in which the study was carried out (e.g. tropics, temperate etc.)

Definition

Habitat in which the study was carried out

Definition

The resource which the study organisms were competing for

Definition

Whether the organisms were kept in enclosures or exclosures like cages, pens, etc. (if yes, the kind of enclosure/exclosure in mentioned)

Definition

Whether the study accounted for spatial variation

Definition

Whether the study accounted for temporal variation

Definition

Whether the study accounted for variation in resource availability

Definition

Whether interspecific competition or intraspecific competition (or both) was measured

Definition

The variable measured to quantify the density of the response species

Definition

Whether the study had any design problems (if yes, a short description of the problem is given)

Definition

Which part of the publication was the data taken from (e.g. figure 1, table 2 etc.)

Definition

Duration of the experiment

Definition

Species used as predator in the experiment

Definition

Broad taxonomic group which the predator belonged to (e.g. fish, copepod etc.)

Definition

Trophic level of the predator species

Definition

Species used as competitor in the experiment (competitor 1)

Definition

Life stage of the competitor species used for the experiment (e.g. larvae, adult, etc.)

Definition

Broad taxonomic group which the competitor belonged to (e.g. fish, copepod etc.)

Definition

Trophic level of the competitor species

Definition

Second competitor species (if any)

Definition

Life stage of the 2nd competitor species, if any, used for the experiment (e.g. larvae, adult, etc.)

Definition

Broad taxonomic group which the 2nd competitor species, if any, belonged to (e.g. fish, copepod etc.)

Definition

Trophic level of the 2nd competitor species, if any

Definition

The focal species or response speices, i.e. the species whose response to competition and predation was quantified

Definition

Life stage of the response species used for the experiment (e.g. larvae, adult, etc.)

Definition

Broad taxonomic group which the response species belonged to (e.g. fish, copepod etc.)

Definition

Trophic level of the response species

Definition

Whether the predator preyed on the response species, on the competitor or on both

Definition

Whether competition was enhanced or reduced as compared to natural conditions, in the competition manipulation treatment

Definition

Whether predation was enhanced or reduced as compared to natural conditions, in the predation manipulation treatment

Definition

Natural density of competitor 1

Definition

Density of competitor 1 in the competition manipulation treatment

Definition

Natural density of competitor 2

Definition

Density of competitor 2 in the competition manipulation treatment

Unit	dimensionless
Type	real
Min	0
Max	75.404

Unit	dimensionless
Type	real
Min	-99.915
Max	79.481

Unit	dimensionless
Type	real
Min	0
Max	31.678

Unit	dimensionless
Type	real
Min	0.12
Max	35.921

Unit	dimensionless
Type	natural
Min	4
Max	10

Unit	dimensionless
Type	natural
Min	2
Max	10

Unit	dimensionless
Type	real
Min	0
Max	11.19986431

Unit	dimensionless
Type	real
Min	0.0725
Max	12.69999134

Unit	dimensionless
Type	real
Min	0.301
Max	688.84

Unit	dimensionless
Type	real
Min	0
Max	528.72

Unit	dimensionless
Type	real
Min	0.037
Max	27.056

Unit	dimensionless
Type	real
Min	0
Max	637.37

Unit	dimensionless
Type	natural
Min	2
Max	10

Unit	dimensionless
Type	natural
Min	2
Max	10

Unit	dimensionless
Type	real
Min	0.0185
Max	15.16036939

Unit	dimensionless
Type	real
Min	0
Max	367.9857411

Unit	dimensionless
Type	real
Min	0.869565217
Max	0.957746479

Unit	dimensionless
Type	real
Min	-1.283866656
Max	2.083656759

Unit	dimensionless
Type	real
Min	0.217462775
Max	0.771351593

Unit	dimensionless
Type	real
Min	0.727272727
Max	0.957746479

Unit	dimensionless
Type	real
Min	-0.913578109
Max	4.034781309

Unit	dimensionless
Type	real
Min	0.220865624
Max	1.438973011

Unit	dimensionless
Type	real
Min	0.936170213
Max	0.979020979

Unit	dimensionless
Type	real
Min	-2.106709983
Max	2.595416967

Unit	dimensionless
Type	real
Min	0.109992755
Max	0.298359321

Unit	dimensionless
Type	real
Min	0.936170213
Max	0.979020979

Unit	dimensionless
Type	real
Min	-0.367005502
Max	3.015333606

Unit	dimensionless
Type	real
Min	0.100004942
Max	0.267556171

Unit	dimensionless
Type	real
Min	0.936170213
Max	0.979020979

Unit	dimensionless
Type	real
Min	-2.325062832
Max	3.55882828

Unit	dimensionless
Type	real
Min	0.100120172
Max	0.348947334

Missing Value Code:

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/533/2/85e9161e322b6c7243c81b49d244bfd0
Name:	growth rate
Description:	Data from experiments which used growth rate as the response variable.
Number of Records:	22
Number of Columns:	68

Table Structure

Object Name:

PGro.csv

Size:

13931 bytes

Authentication:

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Text Format:

Number of Header Lines:

Record Delimiter:

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Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

Column Name:

Author

Year

Journal

Latitude_region

Habitat

Competing_for

In_cages_etc

Variation_spatial

Variation_temporal

Variation_resource

Inter_intra

Measured_variable

Design_problems

Source_of_data

Exp_time_period

Predator_species

Pred_Organism_type

Pred_Trophic_level

1st_manip_comp

1st_comp_life_stage

1st_comp_organism_type

1st_comp_trophic_level

2nd_manip_comp

2nd_comp_life_stage

2nd_comp_organism_type

2nd_comp_trophic_level

Response_species

resp_sp_life_stage

resp_sp_organism_type

resp_sp_trophic_level

Prey_resp_comp_both

Enhance_reduce_comp

Enhance_reduce_pred

comp_1_natural_dens

comp_1_exper_dens

comp_2_natural_dens

comp_2_exper_dens

Y_pc

Y_pe

sd_pc

sd_pe

N_pc_a_pc

N_pe_a_pe

se_pc

se_pe

Y_ac

Y_ae

sd_ac

sd_ae

N_ac_a_ac

N_ae_a_ae

se_ac

se_ae

J_m_for_d_p

d_p

s_2_d_p

J_m_for_d_a

d_a

s_2_d_a

J_m_for_d_I

d_I

s_2_d_I

J_m_for_d_R

d_R

s_2_d_R

J_m_for_d_H

d_H

s_2_d_H

Definition:

First author of the study from which the data was taken

Year of publication of the study

Journal in which the study was published

Latitudinal region in which the study was carried out (e.g. tropics, temperate etc.)

Habitat in which the study was carried out

The resource which the study organisms were competing for

Whether the organisms were kept in enclosures or exclosures like cages, pens, etc. (if yes, the kind of enclosure/exclosure in mentioned)

Whether the study accounted for spatial variation

Whether the study accounted for temporal variation

Whether the study accounted for variation in resource availability

Whether interspecific competition or intraspecific competition (or both) was measured

The variable measured to quantify the growth rate of the response species

Whether the study had any design problems (if yes, a short description of the problem is given)

Which part of the publication was the data taken from (e.g. figure 1, table 2 etc.)

Duration of the experiment

Species used as predator in the experiment

Broad taxonomic group which the predator belonged to (e.g. fish, copepod etc.)

Trophic level of the predator species

Species used as competitor in the experiment (competitor 1)

Life stage of the competitor species used for the experiment (e.g. larvae, adult, etc.)

Broad taxonomic group which the competitor belonged to (e.g. fish, copepod etc.)

Trophic level of the competitor species

Second competitor species (if any)

Life stage of the 2nd competitor species, if any, used for the experiment (e.g. larvae, adult, etc.)

Broad taxonomic group which the 2nd competitor species, if any, belonged to (e.g. fish, copepod etc.)

Trophic level of the 2nd competitor species, if any

The focal species or response speices, i.e. the species whose response to competition and predation was quantified

Life stage of the response species used for the experiment (e.g. larvae, adult, etc.)

Broad taxonomic group which the response species belonged to (e.g. fish, copepod etc.)

Trophic level of the response species

Whether the predator preyed on the response species, on the competitor or on both

Whether competition was enhanced or reduced as compared to natural conditions, in the competition manipulation treatment

Whether predation was enhanced or reduced as compared to natural conditions, in the predation manipulation treatment

Natural density of competitor 1

Density of competitor 1 in the competition manipulation treatment

Natural density of competitor 2

Density of competitor 2 in the competition manipulation treatment

Mean response of focal species to the control + predator present treatment (see table 1)

Mean response of focal species to the experimental + predator present treatment (see table 1)

Standard deviation of response of focal species to the control + predator present treatment

Standard deviation of response of focal species to the experimental + predator present treatment

Sample size used for measuring Ypc multiplied by a weighing factor

Sample size used for measuring Ype multiplied by a weighing factor

Standard error of Ypc

Standard error of Ype

Mean response of focal species to the control + predator absent treatment (see table 1)

Mean response of focal species to the experimental + predator absent treatment (see table 1)

Standard deviation of response of focal species to the control + predator absent treatment

Standard deviation of response of focal species to the experimental + predator absent treatment

Sample size used for measuring Yac multiplied by a weighing factor

Sample size used for measuring Yae multiplied by a weighing factor

Standard error of Yac

Standard error of Yae

Correction factor J(m) used in calculation of dp (see ‘calculations’ section of methods)

The Hedge’s d for effect of competition manipulation in the presence of predation, that is dp (see ‘calculations’ section of methods)

Variance of dp (see ‘calculations’ section of methods)

Correction factor J(m) used in calculation of da (see ‘calculations’ section of methods)

The Hedge’s d for effect of competition manipulation in the absence of predation, that is da (see ‘calculations’ section of methods)

Variance of da (see ‘calculations’ section of methods)

Correction factor J(m) used in calculation of dI (see ‘calculations’ section of methods)

The Hedge’s d for effect interaction between competition and predation, that is dI (see ‘calculations’ section of methods)

Variance of dI (see ‘calculations’ section of methods)

Correction factor J(m) used in calculation of dR (see ‘calculations’ section of methods)

The Hedge’s d for the average effect of competition, that is dR (see ‘calculations’ section of methods)

Variance of dR (see ‘calculations’ section of methods)

Correction factor J(m) used in calculation of dH (see ‘calculations’ section of methods)

The Hedge’s d for the average effect of competition, that is dH (see ‘calculations’ section of methods)

Variance of dH (see ‘calculations’ section of methods)

Storage Type:

string

float

string

float

Measurement Type:

nominal

ratio

nominal

ratio

Measurement Values Domain:

Definition

First author of the study from which the data was taken

Unit	nominalYear
Type	natural
Min	1982
Max	1992

Definition

Journal in which the study was published

Definition

Latitudinal region in which the study was carried out (e.g. tropics, temperate etc.)

Definition

Habitat in which the study was carried out

Definition

The resource which the study organisms were competing for

Definition

Whether the organisms were kept in enclosures or exclosures like cages, pens, etc. (if yes, the kind of enclosure/exclosure in mentioned)

Definition

Whether the study accounted for spatial variation

Definition

Whether the study accounted for temporal variation

Definition

Whether the study accounted for variation in resource availability

Definition

Whether interspecific competition or intraspecific competition (or both) was measured

Definition

The variable measured to quantify the growth rate of the response species

Definition

Whether the study had any design problems (if yes, a short description of the problem is given)

Definition

Which part of the publication was the data taken from (e.g. figure 1, table 2 etc.)

Definition

Duration of the experiment

Definition

Species used as predator in the experiment

Definition

Broad taxonomic group which the predator belonged to (e.g. fish, copepod etc.)

Definition

Trophic level of the predator species

Definition

Species used as competitor in the experiment (competitor 1)

Definition

Life stage of the competitor species used for the experiment (e.g. larvae, adult, etc.)

Definition

Broad taxonomic group which the competitor belonged to (e.g. fish, copepod etc.)

Definition

Trophic level of the competitor species

Definition

Second competitor species (if any)

Definition

Life stage of the 2nd competitor species, if any, used for the experiment (e.g. larvae, adult, etc.)

Definition

Broad taxonomic group which the 2nd competitor species, if any, belonged to (e.g. fish, copepod etc.)

Definition

Trophic level of the 2nd competitor species, if any

Definition

The focal species or response speices, i.e. the species whose response to competition and predation was quantified

Definition

Life stage of the response species used for the experiment (e.g. larvae, adult, etc.)

Definition

Broad taxonomic group which the response species belonged to (e.g. fish, copepod etc.)

Definition

Trophic level of the response species

Definition

Whether the predator preyed on the response species, on the competitor or on both

Definition

Whether competition was enhanced or reduced as compared to natural conditions, in the competition manipulation treatment

Definition

Whether predation was enhanced or reduced as compared to natural conditions, in the predation manipulation treatment

Definition

Natural density of competitor 1

Definition

Density of competitor 1 in the competition manipulation treatment

Definition

Natural density of competitor 2

Definition

Density of competitor 2 in the competition manipulation treatment

Unit	dimensionless
Type	real
Min	0
Max	73.8278

Unit	dimensionless
Type	real
Min	0
Max	103.8

Unit	dimensionless
Type	real
Min	0
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Unit	dimensionless
Type	real
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Unit	dimensionless
Type	real
Min	1
Max	957.2

Unit	dimensionless
Type	real
Min	3
Max	880

Unit	dimensionless
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Max	4.0185

Unit	dimensionless
Type	real
Min	0.433012702
Max	37.8175

Unit	dimensionless
Type	real
Min	0.1461
Max	144.4987

Unit	dimensionless
Type	real
Min	0.647627436
Max	136.1704

Unit	dimensionless
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Max	24.1257

Unit	dimensionless
Type	real
Min	0.3573
Max	134.0149

Unit	dimensionless
Type	real
Min	2
Max	1083.2

Unit	dimensionless
Type	real
Min	3
Max	1149.2

Unit	dimensionless
Type	real
Min	0.155884573
Max	9.44805

Unit	dimensionless
Type	real
Min	0.329089653
Max	21.8117

Unit	dimensionless
Type	real
Min	0.8
Max	0.999557822

Unit	dimensionless
Type	real
Min	-2.122411827
Max	2.992420266

Unit	dimensionless
Type	real
Min	0.002403127
Max	1.412881587

Unit	dimensionless
Type	real
Min	0.8
Max	0.9996637

Unit	dimensionless
Type	real
Min	-0.389423047
Max	4.450088973

Unit	dimensionless
Type	real
Min	0.001793439
Max	1.833070291

Unit	dimensionless
Type	real
Min	0.903225806
Max	0.999808993

Unit	dimensionless
Type	real
Min	-1.16905958
Max	3.900618267

Unit	dimensionless
Type	real
Min	0.001047605
Max	0.347569795

Unit	dimensionless
Type	real
Min	0.903225806
Max	0.999808993

Unit	dimensionless
Type	real
Min	-0.180280676
Max	3.801257319

Unit	dimensionless
Type	real
Min	0.001047116
Max	0.483849554

Unit	dimensionless
Type	real
Min	0.903225806
Max	0.999808993

Unit	dimensionless
Type	real
Min	-1.130851514
Max	3.480880673

Unit	dimensionless
Type	real
Min	0.001047233
Max	0.368248825

Missing Value Code:

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/533/2/c8aae83e10ed61efe2621d07105d2bb7
Name:	mortality
Description:	Data from experiments which used mortality as the response variable.
Number of Records:	19
Number of Columns:	68

Table Structure

Object Name:

PMor.csv

Size:

11263 bytes

Authentication:

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Text Format:

Number of Header Lines:

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Orientation:

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Simple Delimited:

Field Delimiter:	,
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Table Column Descriptions

Column Name:

Author

Year

Journal

Latitude_region

Habitat

Competing_for

In_cages_etc

Variation_spatial

Variation_temporal

Variation_resource

Inter_intra

Measured_variable

Design_problems

Source_of_data

Exp_time_period

Predator_species

Pred_Organism_type

Pred_Trophic_level

1st_manip_comp

1st_comp_life_stage

1st_comp_organism_type

1st_comp_trophic_level

2nd_manip_comp

2nd_comp_life_stage

2nd_comp_organism_type

2nd_comp_trophic_level

Response_species

resp_sp_life_stage

resp_sp_organism_type

resp_sp_trophic_level

Prey_resp_comp_both

Enhance_reduce_comp

Enhance_reduce_pred

comp_1_natural_dens

comp_1_exper_dens

comp_2_natural_dens

comp_2_exper_dens

Y_pc

Y_pe

sd_pc

sd_pe

N_pc_a_pc

N_pe_a_pe

se_pc

se_pe

Y_ac

Y_ae

sd_ac

sd_ae

N_ac_a_ac

N_ae_a_ae

se_ac

se_ae

J_m_for_d_p

d_p

s_2_d_p

J_m_for_d_a

d_a

s_2_d_a

J_m_for_d_I

d_I

s_2_d_I

J_m_for_d_R

d_R

s_2_d_R

J_m_for_d_H

d_H

s_2_d_H

Definition:

First author of the study from which the data was taken

Year of publication of the study

Journal in which the study was published

Latitudinal region in which the study was carried out (e.g. tropics, temperate etc.)

Habitat in which the study was carried out

The resource which the study organisms were competing for

Whether the organisms were kept in enclosures or exclosures like cages, pens, etc. (if yes, the kind of enclosure/exclosure in mentioned)

Whether the study accounted for spatial variation

Whether the study accounted for temporal variation

Whether the study accounted for variation in resource availability

Whether interspecific competition or intraspecific competition (or both) was measured

The variable measured to quantify the mortality of the response species

Whether the study had any design problems (if yes, a short description of the problem is given)

Which part of the publication was the data taken from (e.g. figure 1, table 2 etc.)

Duration of the experiment

Species used as predator in the experiment

Broad taxonomic group which the predator belonged to (e.g. fish, copepod etc.)

Trophic level of the predator species

Species used as competitor in the experiment (competitor 1)

Life stage of the competitor species used for the experiment (e.g. larvae, adult, etc.)

Broad taxonomic group which the competitor belonged to (e.g. fish, copepod etc.)

Trophic level of the competitor species

Second competitor species (if any)

Life stage of the 2nd competitor species, if any, used for the experiment (e.g. larvae, adult, etc.)

Broad taxonomic group which the 2nd competitor species, if any, belonged to (e.g. fish, copepod etc.)

Trophic level of the 2nd competitor species, if any

The focal species or response speices, i.e. the species whose response to competition and predation was quantified

Life stage of the response species used for the experiment (e.g. larvae, adult, etc.)

Broad taxonomic group which the response species belonged to (e.g. fish, copepod etc.)

Trophic level of the response species

Whether the predator preyed on the response species, on the competitor or on both

Whether competition was enhanced or reduced as compared to natural conditions, in the competition manipulation treatment

Whether predation was enhanced or reduced as compared to natural conditions, in the predation manipulation treatment

Natural density of competitor 1

Density of competitor 1 in the competition manipulation treatment

Natural density of competitor 2

Density of competitor 2 in the competition manipulation treatment

Mean response of focal species to the control + predator present treatment (see table 1)

Mean response of focal species to the experimental + predator present treatment (see table 1)

Standard deviation of response of focal species to the control + predator present treatment

Standard deviation of response of focal species to the experimental + predator present treatment

Sample size used for measuring Ypc multiplied by a weighing factor

Sample size used for measuring Ype multiplied by a weighing factor

Standard error of Ypc

Standard error of Ype

Mean response of focal species to the control + predator absent treatment (see table 1)

Mean response of focal species to the experimental + predator absent treatment (see table 1)

Standard deviation of response of focal species to the control + predator absent treatment

Standard deviation of response of focal species to the experimental + predator absent treatment

Sample size used for measuring Yac multiplied by a weighing factor

Sample size used for measuring Yae multiplied by a weighing factor

Standard error of Yac

Standard error of Yae

Correction factor J(m) used in calculation of dp (see ‘calculations’ section of methods)

The Hedge’s d for effect of competition manipulation in the presence of predation, that is dp (see ‘calculations’ section of methods)

Variance of dp (see ‘calculations’ section of methods)

Correction factor J(m) used in calculation of da (see ‘calculations’ section of methods)

The Hedge’s d for effect of competition manipulation in the absence of predation, that is da (see ‘calculations’ section of methods)

Variance of da (see ‘calculations’ section of methods)

Correction factor J(m) used in calculation of dI (see ‘calculations’ section of methods)

The Hedge’s d for effect interaction between competition and predation, that is dI (see ‘calculations’ section of methods)

Variance of dI (see ‘calculations’ section of methods)

Correction factor J(m) used in calculation of dR (see ‘calculations’ section of methods)

The Hedge’s d for the average effect of competition, that is dR (see ‘calculations’ section of methods)

Variance of dR (see ‘calculations’ section of methods)

Correction factor J(m) used in calculation of dH (see ‘calculations’ section of methods)

The Hedge’s d for the average effect of competition, that is dH (see ‘calculations’ section of methods)

Variance of dH (see ‘calculations’ section of methods)

Storage Type:

string

float

string

float

Measurement Type:

nominal

ratio

nominal

ratio

Measurement Values Domain:

Definition

First author of the study from which the data was taken

Unit	nominalYear
Type	natural
Min	1986
Max	1992

Definition

Journal in which the study was published

Definition

Latitudinal region in which the study was carried out (e.g. tropics, temperate etc.)

Definition

Habitat in which the study was carried out

Definition

The resource which the study organisms were competing for

Definition

Whether the organisms were kept in enclosures or exclosures like cages, pens, etc. (if yes, the kind of enclosure/exclosure in mentioned)

Definition

Whether the study accounted for spatial variation

Definition

Whether the study accounted for temporal variation

Definition

Whether the study accounted for variation in resource availability

Definition

Whether interspecific competition or intraspecific competition (or both) was measured

Definition

The variable measured to quantify the mortality of the response species

Definition

Whether the study had any design problems (if yes, a short description of the problem is given)

Definition

Which part of the publication was the data taken from (e.g. figure 1, table 2 etc.)

Definition

Duration of the experiment

Definition

Species used as predator in the experiment

Definition

Broad taxonomic group which the predator belonged to (e.g. fish, copepod etc.)

Definition

Trophic level of the predator species

Definition

Species used as competitor in the experiment (competitor 1)

Definition

Life stage of the competitor species used for the experiment (e.g. larvae, adult, etc.)

Definition

Broad taxonomic group which the competitor belonged to (e.g. fish, copepod etc.)

Definition

Trophic level of the competitor species

Definition

Second competitor species (if any)

Definition

Life stage of the 2nd competitor species, if any, used for the experiment (e.g. larvae, adult, etc.)

Definition

Broad taxonomic group which the 2nd competitor species, if any, belonged to (e.g. fish, copepod etc.)

Definition

Trophic level of the 2nd competitor species, if any

Definition

The focal species or response speices, i.e. the species whose response to competition and predation was quantified

Definition

Life stage of the response species used for the experiment (e.g. larvae, adult, etc.)

Definition

Broad taxonomic group which the response species belonged to (e.g. fish, copepod etc.)

Definition

Trophic level of the response species

Definition

Whether the predator preyed on the response species, on the competitor or on both

Definition

Whether competition was enhanced or reduced as compared to natural conditions, in the competition manipulation treatment

Definition

Whether predation was enhanced or reduced as compared to natural conditions, in the predation manipulation treatment

Definition

Natural density of competitor 1

Definition

Density of competitor 1 in the competition manipulation treatment

Definition

Natural density of competitor 2

Definition

Density of competitor 2 in the competition manipulation treatment

Unit	dimensionless
Type	real
Min	0.003
Max	55.83

Unit	dimensionless
Type	real
Min	0.012
Max	34.4

Unit	dimensionless
Type	real
Min	0.005196152
Max	53.03014094

Unit	dimensionless
Type	real
Min	0.010392305
Max	42.74668792

Unit	dimensionless
Type	natural
Min	2
Max	30

Unit	dimensionless
Type	natural
Min	2
Max	30

Unit	dimensionless
Type	real
Min	0.003
Max	23.7158

Unit	dimensionless
Type	real
Min	0.006
Max	19.1169

Unit	dimensionless
Type	real
Min	0.19
Max	76.0525

Unit	dimensionless
Type	real
Min	0.175
Max	78.2152

Unit	dimensionless
Type	real
Min	0
Max	36.43

Unit	dimensionless
Type	real
Min	0
Max	37.8

Unit	dimensionless
Type	natural
Min	2
Max	30

Unit	dimensionless
Type	natural
Min	2
Max	30

Unit	dimensionless
Type	real
Min	0
Max	12.1159

Unit	dimensionless
Type	real
Min	0
Max	10.438

Unit	dimensionless
Type	real
Min	0.571428571
Max	0.987012987

Unit	dimensionless
Type	real
Min	-1.081802622
Max	13.5987379

Unit	dimensionless
Type	real
Min	0.066773024
Max	9.646283623

Unit	dimensionless
Type	real
Min	0.571428571
Max	0.987012987

Unit	dimensionless
Type	real
Min	-0.855741283
Max	2.306745379

Unit	dimensionless
Type	real
Min	0.068566518
Max	1.000990913

Unit	dimensionless
Type	real
Min	0.903225806
Max	0.993520518

Unit	dimensionless
Type	real
Min	-14.33880527
Max	2.203052519

Unit	dimensionless
Type	real
Min	0.033473562
Max	1.485008353

Unit	dimensionless
Type	real
Min	0.903225806
Max	0.993520518

Unit	dimensionless
Type	real
Min	-0.60933997
Max	7.169402634

Unit	dimensionless
Type	real
Min	0.033425323
Max	0.521252088

Unit	dimensionless
Type	real
Min	0.903225806
Max	0.993520518

Unit	dimensionless
Type	real
Min	-0.144710937
Max	14.26335664

Unit	dimensionless
Type	real
Min	0.033538483
Max	1.966194522

Missing Value Code:

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Non-Categorized Data Resource

Name:

protocol.pdf

Entity Type:

unknown

Description:

Formatted methods

Physical Structure Description:

Object Name:

protocol.pdf

Size:

198114 bytes

Authentication:

6310c7dd2412125ddca2164ef5145873 Calculated By MD5

Externally Defined Format:

Format Name:

unknown

Data:

https://pasta-s.lternet.edu/package/data/eml/edi/533/2/80dc173e314b6abdc81d86a56cdd2028

Data Package Usage Rights

This information is released under the Creative Commons license - Attribution - CC BY (https://creativecommons.org/licenses/by/4.0/). The consumer of these data (\"Data User\" herein) is required to cite it appropriately in any publication that results from its use. The Data User should realize that these data may be actively used by others for ongoing research and that coordination may be necessary to prevent duplicate publication. The Data User is urged to contact the authors of these data if any questions about methodology or results occur. Where appropriate, the Data User is encouraged to consider collaboration or co-authorship with the authors. The Data User should realize that misinterpretation of data may occur if used out of context of the original study. While substantial efforts are made to ensure the accuracy of data and associated documentation, complete accuracy of data sets cannot be guaranteed. All data are made available \"as is.\" The Data User should be aware, however, that data are updated periodically and it is the responsibility of the Data User to check for new versions of the data. The data authors and the repository where these data were obtained shall not be liable for damages resulting from any use or misinterpretation of the data. Thank you.

Keywords

By Thesaurus:
(No thesaurus)	Competition, meta-analysis
LTER Controlled Vocabulary	predation, herbivory, species interactions

Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

Methods and protocols used in the collection of this data package

Description:

methods are provided as attached pdf file.

People and Organizations

Creators:

Individual:

Jessica Gurevitch

Organization:

Department of Ecology and Evolution, Stony Brook University, Stony Brook, NY, USA

Email Address:

jessica.gurevitch@stonybrook.edu

Id:

https://orcid.org/0000-0003-0157-4332

Individual:

Janet A. Morrison

Organization:

Department of Biology, The College of New Jersey, Ewin, NJ, USA

Email Address:

morrisja@tcnj.edu

Individual:

Larry Vernon Hedges

Organization:

University of Chicago, Chicago, IL, USA

Organization:

Department of Statistics, Northwestern University, Evanston, IL, USA

Email Address:

l-hedges@northwestern.edu

Id:

https://orcid.org/0000-0002-7531-0631

Contacts:

Individual:

Jessica Gurevitch

Organization:

Department of Ecology and Evolution, Stony Brook University, Stony Brook, NY, USA

Email Address:

jessica.gurevitch@stonybrook.edu

Id:

https://orcid.org/0000-0003-0157-4332

Temporal, Geographic and Taxonomic Coverage

Temporal, Geographic and/or Taxonomic information that applies to all data in this dataset:

Time Period

Begin:

1979

End:

2000

Geographic Region:

Description:

Global

Bounding Coordinates:

Northern:	80	Southern:	-80
Western:	-180	Eastern:	180

Project

Parent Project Information:

Title:

Demography and Population Dynamics in a Fire-adapted Tree Species, Pinus Rigida

Personnel:

Individual:	Jessica Gurevitch
Organization:	0000-0003-0157-4332
Role:	Principal Investigator

Funding:

Division of Environmental Biology, National Science Foundation (NSF), USA 9806923

Related Project:

Title:

Ecological Meta-Analysis: Synthesizing the Results of Field Experiments on Competition and Predation

Personnel:

Individual:	Daniel Dykhuizen
Role:	Principal Investigator

Funding:

Division of Environmental Biology, National Science Foundation (NSF), USA 9113065

Maintenance

Maintenance:

Description:	completed
Frequency:

Other Metadata

Copyright 2024 Environmental Data Initiative. This material is based upon work supported by the National Science Foundation under grants #2223103 and #2223104. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. Please contact us with questions, comments, or for technical assistance regarding this web site or the Environmental Data Initiative. Please read our privacy policy to know what information we collect about you and to understand your privacy rights.

EDI is a collaboration between the University of New Mexico and the University of Wisconsin – Madison, Center for Limnology:

Data Package Metadata View Summary

The Interaction between Competition and Predation: A Meta-analysis of Field Experiments

Data Entities

Data Table

Data Table

Data Table

Non-Categorized Data Resource

Data Package Usage Rights

Keywords

Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Project

Parent Project Information:

Maintenance

Recently Added

Recently Updated

Data Package Metadata View Summary

The Interaction between Competition and Predation: A Meta-analysis of Field Experiments

+/- Data Entities

Data Table

Data Table

Data Table

Non-Categorized Data Resource

+/- Data Package Usage Rights

+/- Keywords

+/- Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

+/- People and Organizations

+/- Temporal, Geographic and Taxonomic Coverage

+/- Project

Parent Project Information:

+/- Maintenance

Data Entities

Data Package Usage Rights

Keywords

Methods and Protocols

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Project

Maintenance