Table 2 List of variables to be extracted for the systematic review on non-target effects of Bt maize on non-target animals

article_id

Unique identification number assigned to each publication

author

Author(s) of the listed publication

publication_year

Year of publication of study

citation

Citation, e.g. journal name, volume and page numbers

title

Title of the publication

author_affiliation

Type(s) of institutions that the author(s) are affiliated with (e.g. academic, private sector, government, etc.)

author_institute

Institution of corresponding author (or of first author if no corresponding author was listed)

was_peer_reviewed

Indicates whether study was published in a peer reviewed journal

Study_funding

Information on funding source of the study (government, private, mix)

country

Country where field study was performed

more_info_from_author

Indicates whether author provided additional details or data

expmt_num

Number of experiment within a study (e.g. different locations, years, etc.)

data_location

Figure number, table number or page number where means and variation were found

was_data_scanned

Indicates whether figures were scanned to obtain data values

pip

Insecticidal Bt protein(s) engineered into the transgenic crop

pip_target

Insect order targeted by the Bt protein(s)

event

Transgenic event of the crop tested

transgenic_hybrid_or_var

Transgenic hybrid or variety name

nontransgenic_hybrid_or_var

Non-transgenic hybrid or variety name

nontarget_class

Non-target taxonomic class

nontarget_order

Non-target taxonomic order

nontarget_family

Non-target taxonomic family

nontarget_genus

Non-target taxonomic genus

nontarget_species

Non-target taxonomic species

nontarget_finest grouping

Finest level of taxonomic resolution reported for the nontarget organism(s)

ntarget_f_group

Functional group of nontarget organism(s)

Strata

Specifies if non-target is plant-, ground, or soil-dwelling

replicate_data_issues

Codes flag for non-independence to be considered for analyses: TGLE = taxonomic group lumped elsewhere; EMUE = experimental means used elsewhere; CMUE = control means used elsewhere

nontarget_final_age_or_stage

Stage or sex of the non-target collected

field_location

Location of field(s) to the level of specificity provided by the author

Georeference longitude

GPS coordinates of the field (WGS84 decimal format)

Georeference latitude

GPS coordinates of the field (WGS84 decimal format)

number_of_fields

Number of fields as described by the author

cultivation

Cultivation practices used within the fields (notes on tillage, herbicides, fungicides, etc.)

site_characterization

Information on site particularities including pressure of target pests, weed infestation, disease infestation, soil characteristics, etc.

plot_size

Size of replicate plots (in hectares)

plot_size_explanation

Explanations for any calculations done to obtain plot size

is_plot_size_avg

Indicates whether the listed plot size is an average or an estimate

was_study_randomized

Indicates whether the authors indicated that they randomly assigned replicates to treatments

planting_date

Date on which field plots were planted

first_sample

Date on which first sample was taken

last_sample

Date on which last sample was taken

study_duration_determination

More detailed description on study duration

years_transgenic

Number of year known for the respective plots known to be grown with the Bt crop

pesticide_name

Brand name of insecticides used

pesticide_active_ingr

Active ingredient for insecticides used

pesticide_spray_rate

Amount of active ingredient per spray

mechanism_of_pesticide_app

Indicates if insecticide was applied as spray, seed treatment, soil granules

num_of_pesticide_app

Number of insecticide applications

is_num_of_pesticide_app_avg

Indicates if the number of insecticide applications is an average

sampling_method_abbrev

Abbreviated description of sampling method

sampling_method_detailed

Detailed description of sampling method

sampling_frequency

Frequency of repeated samples per replicate field or plot

number_of_sample_days

The number of times that each replicate field or plot was repeatedly sampled over the duration of the experiment

num_subsamples

Number of subsamples per true replicate

response_variable_abbrev

Major category of response variable

response_variable_detailed

Detailed description of response variable

true_control_sample_size

True sample size for control treatment

true_expmtl_sample_size

True sample size for experimental treatment

authors_control_sample_size

Sample size for the control treatment as stated by the author

authors_expmtl_sample_size

Sample size for the experimental treatment as stated by the author

seasonal_or_peak

Indicates whether values represent seasonal means across multiple sample days or means from peak days

did-we-calc

Indicates whether we calculated the seasonal mean or peak days

calc_method_seas_mean

Explains how we calculated the seasonal mean or peak days

comparison_type

Indicates whether the comparison is

1) untreated Bt vs. untreated control,

2) untreated Bt vs. insecticide treated control, or

3) treated Bt vs. treated control

control_mean

Mean for the control treatment

expmtl_mean

Mean for the experimental treatment

control_std_err

Standard error for the control treatment

expmtl_std_err

Standard error for the experimental treatment

control_std_dev

Standard deviation for the control treatment

expmtl_std_dev

Standard deviation for the experimental treatment

mean_unit

Unit of measurement for the response variable

statistical_test_used

Statistical test used by author

is_effect_significant

Indicates whether a significant effect was detected by the author

warning1

Space for remarks for this record