Long-term multisite Scots pine trial, Scotland: annual Dothistroma needle blight surveys, 2015-2025
https://doi.org/10.5285/c3b45aac-a497-4e57-9ee0-8cdd8677f5de
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The dataset contains disease survey data for Scots pine trees in a long-term progeny-provenance common garden trial planted in three sites in Scotland. Trees were originally collected from 21 provenances of native Caledonian pinewood from across the native range in Scotland.
Disease surveys were performed annually between August and September from 2015 to 2025 (excluding 2019 and 2020) for one site (FS) and in 2016 and 2022 for two sites (FE and FW). Susceptibility to Dothistroma needle blight (DNB, caused by Dothistroma septosporum) for each tree was estimated by recording two traits: 'direct susceptibility' (estimated percentage of needles with lesions) and 'indirect susceptibility' (estimated years needle retention). Indirect susceptibility was recorded to ensure needle loss associated with susceptibility to DNB was also captured. In addition to annual measures of susceptibility, long-term susceptibility was also estimated for each tree.
Disease surveys were performed annually between August and September from 2015 to 2025 (excluding 2019 and 2020) for one site (FS) and in 2016 and 2022 for two sites (FE and FW). Susceptibility to Dothistroma needle blight (DNB, caused by Dothistroma septosporum) for each tree was estimated by recording two traits: 'direct susceptibility' (estimated percentage of needles with lesions) and 'indirect susceptibility' (estimated years needle retention). Indirect susceptibility was recorded to ensure needle loss associated with susceptibility to DNB was also captured. In addition to annual measures of susceptibility, long-term susceptibility was also estimated for each tree.
Publication date: 2026-05-07
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Format
Comma-separated values (CSV)
Spatial information
Study area
Spatial representation type
Tabular (text)
Spatial reference system
OSGB 1936 / British National Grid
Temporal information
Temporal extent
2015-01-01 to 2025-12-31
Temporal resolution
yearly
Provenance & quality
Disease surveys were performed by visual observation. Recorders were experienced in detection and identification of symptoms of Dothistroma needle blight.
Annual direct susceptibility was recorded in 5% increments where 1% is equivalent to negligible symptoms. Annual indirect susceptibility was recorded in 0.5 year increments of needle retention, except for 2016 which was recorded in 0.25 year increments.
From 2015 to 2017 (inclusive) a single value for each of direct and indirect susceptibility was recorded per tree. From 2018 to 2025 separate estimates were made for each trait for the top, middle and bottom of the crown for each tree and a mean value calculated per tree per year for each trait.
For the FS site (where nine annual surveys were conducted), long-term direct and indirect susceptibility were calculated using an Area Under the Disease Progress (AUDPS) approach. For the FE and FW sites (where two annual surveys were conducted), long-term direct and indirect susceptibility values for each tree were obtained from the mean value across the two surveys for each trait.
Annual direct susceptibility was recorded in 5% increments where 1% is equivalent to negligible symptoms. Annual indirect susceptibility was recorded in 0.5 year increments of needle retention, except for 2016 which was recorded in 0.25 year increments.
From 2015 to 2017 (inclusive) a single value for each of direct and indirect susceptibility was recorded per tree. From 2018 to 2025 separate estimates were made for each trait for the top, middle and bottom of the crown for each tree and a mean value calculated per tree per year for each trait.
For the FS site (where nine annual surveys were conducted), long-term direct and indirect susceptibility were calculated using an Area Under the Disease Progress (AUDPS) approach. For the FE and FW sites (where two annual surveys were conducted), long-term direct and indirect susceptibility values for each tree were obtained from the mean value across the two surveys for each trait.
Licensing and constraints
This dataset is available under the terms of the Open Government Licence 
Cite this dataset as:
Perry, A.; Baden, R.; Beaton, J.K.; Cottrell, J.E.; Dickenmann, L.; Donnelly, K.; Lobo-Guerrero Villegas, J.P.; Mullett, M.; Nemeth, K.; Stockan, J.A.; Cavers, S. (2026). Long-term multisite Scots pine trial, Scotland: annual Dothistroma needle blight surveys, 2015-2025. NERC EDS Environmental Information Data Centre. https://doi.org/10.5285/c3b45aac-a497-4e57-9ee0-8cdd8677f5de
Related
This dataset is included in the following collections
Correspondence/contact details
Other contacts
Publisher
NERC EDS Environmental Information Data Centre
info@eidc.ac.uk
Rights holder
UK Centre for Ecology & Hydrology
Additional metadata
Keywords
Funding
Natural Environment Research Council Award: NE/V019813/1
Biotechnology and Biological Sciences Research Council Award: BB/W020378/1
Department for Environment Food and Rural Affairs Award: CFP2206
Biotechnology and Biological Sciences Research Council Award: BB/W020378/1
Department for Environment Food and Rural Affairs Award: CFP2206