READ ME File For 'Systematic map database of sciurid bark-stripping research' Dataset DOI: doi.org/10.5258/SOTON/PG/D229a ReadMe Author: Alexandra Ash, University of Southampton 0000-0002-2647-7945 This dataset supports the thesis entitled AWARDED BY: University of Southampton DATE OF AWARD: 2026 Date of data collection: January 2022 - December 2023 Information about geographic location of data collection: n/a Licence: This dataset is licensed under the Creative Commons Attribution 4.0 International License (CC BY-NC 4.0). You are free to share and adapt the data as long as appropriate credit is given. Related projects/Funders: CFP2513 Centre for Forest Protection (CFP) -------------------- DATA & FILE OVERVIEW -------------------- This dataset contains: Data from peer-reviewed and grey literature on the bark-stripping behaviours of sciurid species across the globe. If data was derived from another source, list source: Published peer-reviewed and grey literature. -------------------------- METHODOLOGICAL INFORMATION -------------------------- Description of methods used for collection/generation of data: standard methods in systematic mapping for environmental sciences were used, using guidelines from the Collaboration for Environmental Evidence. Methods for processing the data: Tidyverse packages in the programming language R were used to organise data. People involved with sample collection, processing, analysis and/or submission: Alexandra Ash, Yanjie Zhao, Evelyn Pina-Covarrubias, Rebecca Spake, C Patrick Doncaster -------------------------- DATA-SPECIFIC INFORMATION -------------------------- Number of variables:68 Number of cases/rows: 188 Variable list, defining any abbreviations, units of measure, codes or symbols used: ID = individual paper ID REF = full reference Source = source of reference JOURNAL = academic journal (for peer-reviewed literature) DATE = year of publication DECADE = decade of publication LINK = link to publication LAT = latitude of field data collection LONG = longitude of field data collection COUNTRY = country of field data collection LENGTH = length of study (in months) SQSP = squirrel species studied SQSP_ABBREV = squirrel species categorised TR.SPP = tree species studied WINTER = behaviour observed in winter (0/1) SPRING = behaviour observed in spring (0/1) SUMMER = behaviour observed in summer (0/1) AUTUMN = behaviour observed in autumn (0/1) SEASON_UNREPORTED = season of behaviour not reported (0/1) DISCIPLINE = paper categorised into academic discipline PUBTYPE = publication type STUDESIGN = study design DATATYPE = quantative, qualitative or both SAMPSTRAT = sampling strategy BEHAVIOURSAMP = behavioural sampling strategy ANCIENT_WOOD = presence of ancient woodland (0/1) BROADLEAF_NG = presence of naturally regenerating broadleaf woodland (0/1) BROADLEAF_P = presence of planted broadleaf woodland (0/1) BROADLEAF = presence of broadleaf woodland, if planted/nat regen not specified (0/1) CONIFER_NG = presence of naturally regenerating woodland (0/1) CONIFER_P = presence of planted conifer woodland (0/1) CONIFER = presence of conifer woodland, if planted/nat regen not specified (0/1) MIXED_P = presence of mixed (both conifer and broadleaf) planted woodland (0/1) MIXED_NG = presence of naturally regenerating mixed woodland (0/1) MIXED= presence of mixed woodland, if planted/nat regen not specified (0/1) TROPICAL = presence of tropical forest (0/1) ARBORETUM = presence of arboretum (0/1) URBAN = presence of urban trees/woodland (0/1) SAVANNAH = presence of tree savnnah (0/1) ORCHARD= presence of orchard (0/1) WOOD_NOT_REPORTED= woodland type not reported (0/1) TR.ORIGIN= origin of tree species (native/invasive or both) SQ.ORIGIN = origin of squirrel species (native/invasive or both) SILVICULTURE = silvicultural management methods trialled were: successful, recommended, condiditionally successful or not discussed TREE_PROTECTION = tree protection methods trialled were: successful, recommended, condiditionally successful or not discussed NON_LETHAL = non-lethal squirrel management methods trialled were: successful, recommended, condiditionally successful or not discussed LETHAL= lethal population management methods trialled were: successful, recommended, condiditionally successful or not discussed BEHAVIOURAL = behaivoural causes of bark stripping hypothesized, investigated, or not dicussed PHYSIOLOGICAL = physiological causes of bark stripping hypothesized, investigated, or not dicussed ENVIRONMENTAL = environmental causes of bark stripping hypothesized, investigated, or not dicussed CAUSE.SPECIFIC = list of specific cuases mentioned in the paper PERSPECTIVE = perspective that paper was written / investigated (tree, squirrel or both) SQ.DENS = if squirel density measured, what was average density MIN.DENS = if squirel density measured, what was minimum density MAX.DENS = if squirel density measured, what was maximum density DENS.CAT = squirrel density categorised into: not reported, 1, 2, or 3 INTERVENTION = for experimental studies, what intervention was applied DAMAGE= damage present or not reported MINDAM = minimum amount of damage recorded MAXDAM = maximum amount of damage recorded CONTROLDAM = if interventions applied to limit damage, what was the percentage of trees damaged in control group TREATDAM = if interventions applied to limit damage, what was the percentage of trees damaged in treatment group DISEASE = disease present, absent or not reported as an consquence of damage STRDAM= structural damage present, absent or not reported as an consquence of damage RED.GROWTH = reduced tree growth present, absent or not reported as an consquence of damage DEATH = tree death present, absent or not reported as an consquence of damage Date that the file was created: August 2025