{"help":"Return the metadata of a dataset (package) and its resources. :param id: the id or name of the dataset :type id: string","success":true,"result":[{"id":"a89e02e8-7f7f-444f-9302-5630869e91c5","name":"national-electrofishing-programme-scotland-neps-2023-survey-design-data","title":"National Electrofishing Programme for Scotland (NEPS) 2023 Survey Design Data","author_email":"marinedirectorate@gov.scot","maintainer":"Scottish Government - Marine Directorate Data Publications","maintainer_email":"marinedirectorate@gov.scot","notes":"\u003Cp\u003EThe National Electrofishing Programme for Scotland (NEPS) provides a national scale statistical survey of Scotland\u2019s salmon rivers (Jackson et al., 2025). The foundation of the programme is a statistical survey design that ensures collection of unbiased, spatially representative data on the abundance of freshwater fish and the pressures that affect them, including water quality and genetic introgression from farm escapes. Comparisons to target benchmark densities for fry and parr lifestages for salmon (Malcolm et al., 2019a) and trout (Malcolm et al., in prep), allow an assessment of overall status \/ health.\u003C\/p\u003E\n\u003Cp\u003EIn the absence of a national programme, the NEPS survey can still support important regional data collection initiatives (within Strata) by providing site locations generated from the larger statistical survey. This allows data to be brought together and analysed together at larger scales as required and as resources allow. However, it also allows local managers to monitor and assess salmonids within their region using robust methods developed over the last decade, strengthening confidence in both the data collected and the assessments that are undertaken. When combined with information on strata framesizes (i.e. the length of rivers in the sample frame) and benchmarks (expected mean densities) this potentially allows users to run GRTS analyses using the spsurvey R package (Dumelle et al., 2023). This DOI dataset package thus provides 3 datasets from the NEPS 2023 survey design. The NEPS 2023 survey (see Jackson et al., 2025 for details) is the latest available NEPS survey, pending changes to allow the collection of data from the Northern Isles. The package consists of:\u003C\/p\u003E\n\u003Col\u003E\n\u003Cli\u003ENEPS 2023 survey sites list including the survey weights, which are required to correctly analyse the data at regional scales (summary statistics should not be generated from site-wise density estimates without accounting for the survey weights). This is the NEPS 2023 site list following the full national NEPS sampling programme in 2023. See notes section below for information on use of the sites list.\u003C\/li\u003E\n\u003Cli\u003EBenchmark densities for each strata (i.e. mean densities expected for the sample frame within a strata)\u003C\/li\u003E\n\u003Cli\u003EFrame lengths for each strata (this is required to correct \/ adjust sample weights)\u003C\/li\u003E\n\u003C\/ol\u003E\n\u003Cp\u003E\u003Cstrong\u003EImportant notes on sites list use\u003C\/strong\u003E\u003Cbr \/\u003E\n\u2022   The site list is ordered by strata and site name.\u003Cbr \/\u003E\n\u2022   Sites which were replaced by oversamples in the first year of the survey (2023) have been removed from the sample list.\u003Cbr \/\u003E\n\u2022   The panel column currently assumes a 9-year rotating panel design with annual sites, 3-year and 9-year panel rotation. For example, in a region with 30 sites the coding is as follows; 10 annual sites (to be fished each year), 10 3-year sites (panel 3.1, first year of the 3-year rotating panel) and 10 9-year sites (panel 9.1, first year of the 9-year rotating panel). This design was chosen to balance trend detection and spatial coverage consistent with the objectives of NEPS. However, the survey could be used in other ways e.g. the same sites could be fished each year to improve trend detection. Such considerations would need to be addressed in subsequent analysis.\u003Cbr \/\u003E\n\u2022   The number of sites that are sampled in a given year is resource dependent and may also reflect choices around panel rotations. However, it is critical that sites are sampled sequentially down the sites list to maintain the integrity of the survey. Sites cannot be \u201cchosen\u201d within a survey.\u003Cbr \/\u003E\n\u2022   Where local managers make use of the NEPS survey design it is important that meta-data are retained to document any panel rotations and over sample requirements (and reasons). This information may be important for future data analysis depending on objectives.\u003Cbr \/\u003E\n\u2022   Site weights should be adjusted prior to analysis (see spsurvey documentation).\u003C\/p\u003E\n","url":"https:\/\/data.marine.gov.scot\/dataset\/national-electrofishing-programme-scotland-neps-2023-survey-design-data","state":"Active","private":true,"revision_timestamp":"Tue, 07\/01\/2025 - 16:09","metadata_created":"Tue, 07\/01\/2025 - 16:00","metadata_modified":"Tue, 07\/01\/2025 - 16:09","creator_user_id":"ef1d5231-9817-4ea3-875e-aadc55addee0","type":"Dataset","resources":[{"id":"5177ad5f-0f86-42a3-a6d7-732d50285ebc","revision_id":"","url":"https:\/\/data.marine.gov.scot\/sites\/default\/files\/\/NEPS_2023_Survey.csv","description":"\u003Cp\u003EUsers should refer to Jackson et al. (2025) for full details of the NEPS 2023 survey design. In brief, the survey is an unequal probability Generalised Random Tessellation Stratified (GRTS) survey design with a panel design for survey over time and oversamples. The target population encompasses all rivers that are accessible to Atlantic salmon, where there are registered fisheries and where sampling by wading and electrofishing is possible. The survey had 54 separate strata, including SACs and index monitoring sites. Sample site selection is weighted towards rivers where higher juvenile salmon densities were expected, based on the salmon benchmark model predictions from Malcolm et al (2019a), with a targeted minimum distance of 75 metres between sites. Sample numbers reflected scientific requirements, available resources, and an expectation of oversample requirements based on previous surveys and practical considerations.\u003Cbr \/\u003E\nThe survey design was generated using R version 4.2.0 (R Core Team, 2022) and spsurvey version 5.3.0 (Dumelle et al., 2023).\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Tue, 07\/01\/2025 - 16:09","name":"NEPS 2023 Survey","mimetype":"text\/csv","size":"1.19 MB","created":"Tue, 07\/01\/2025 - 16:02","resource_group_id":"f96d4bd9-9492-4e8a-b459-d66dfec8d920","last_modified":"Date changed  Tue, 07\/01\/2025 - 16:09"},{"id":"8b6a5012-eb8a-4113-960e-c9a5af2c7d38","revision_id":"","url":"https:\/\/data.marine.gov.scot\/sites\/default\/files\/\/Strata_Reporting_Benchmarks.csv","description":"\u003Cp\u003ESalmon (Malcolm et al., 2019a) and trout benchmark densities (Malcolm et al., in prep) were obtained from models relating fish densities to habitat proxies derived from spatial data. The benchmark densities represent the average densities that would be expected for a particular habitat if populations were \u201chealthy\u201d. Benchmarks can thus be considered similar in concept to \u201cintrinsic habitat potential\u201d (Burnett et al., 2007). Benchmark densities for both salmon and trout, fry (0+) and parr (\u0026gt;0+) were predicted across the river network.\u003Cbr \/\u003E\nRegional benchmarks (for each strata) were calculated by estimating the mean benchmark density across the sample frame within each strata (See Jackson et al., 2025 for details).  These strata benchmarks can be compared to mean density estimates for individual strata (from the GRTS survey) to assess regional performance.\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Tue, 07\/01\/2025 - 16:09","name":"Strata Reporting Benchmarks","mimetype":"text\/csv","size":"10.37 KB","created":"Tue, 07\/01\/2025 - 16:03","resource_group_id":"f96d4bd9-9492-4e8a-b459-d66dfec8d920","last_modified":"Date changed  Tue, 07\/01\/2025 - 16:09"},{"id":"24d9f166-4468-48bb-912b-5bb89e1e7a2f","revision_id":"","url":"https:\/\/data.marine.gov.scot\/sites\/default\/files\/\/Strata_Framesizes.csv","description":"\u003Cp\u003ESample frame sizes (river length in metres) for each stratum in the NEPS 2023 Survey were calculated from the licensed CEH 1:50,000 scale river centre-line network. These frame sizes should be used to adjust sample weights.\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Tue, 07\/01\/2025 - 16:09","name":"NEPS 2023 Strata Framesizes","mimetype":"text\/csv","size":"1.75 KB","created":"Tue, 07\/01\/2025 - 16:05","resource_group_id":"f96d4bd9-9492-4e8a-b459-d66dfec8d920","last_modified":"Date changed  Tue, 07\/01\/2025 - 16:09"}],"tags":[{"id":"a6fdf7e2-3aa5-47db-a496-c4da2e63dc61","vocabulary_id":"2","name":"Fisheries and aquaculture"},{"id":"fc20b7d9-2390-42c9-a98b-8a4218f7515b","vocabulary_id":"2","name":"Habitat"},{"id":"f043f5db-ed1d-4341-a643-d044205d66bd","vocabulary_id":"2","name":"environment"},{"id":"4f6ab1e2-5570-4ecd-86b2-4118655e451d","vocabulary_id":"2","name":"fish"}],"groups":[{"description":"\u003Cp\u003EMarine Directorate undertakes a wide range of monitoring covering many aspects of the Scottish marine ecosystem.\u003C\/p\u003E\n\u003Cp\u003EMonitoring is undertaken in Scottish Inshore Waters, using networks of volunteers and automatic recording equipment, as well as in Scottish Offshore Waters, using the MSS research vessels MRV Alba na Mara and MRV Scotia.\u003C\/p\u003E\n\u003Cp\u003EMarine Scotland Science also participates national monitoring programmes, such as:\u003C\/p\u003E\n\u003Cul\u003E\n\u003Cli\u003EUK Marine Monitoring and Assessment Strategy (UKMMAS)\u003C\/li\u003E\n\u003Cli\u003EUK Marine Environmental Change Network (MECN)\u003C\/li\u003E\n\u003Cli\u003EUK Marine Environmental Data and Information Network (MEDIN)\u003C\/li\u003E\n\u003C\/ul\u003E\n\u003Cp\u003EThis group provides published data from monitoring these activities. For many activities, there are national or international standards for how the monitoring is undertaken.\u003C\/p\u003E\n","id":"f96d4bd9-9492-4e8a-b459-d66dfec8d920","image_display_url":"https:\/\/data.marine.gov.scot\/sites\/default\/files\/\/button%20220%20_1-02_1.png","title":"Monitoring","name":"group\/monitoring"},{"description":"\u003Cp\u003EData and reports from the Freshwater Laboratory in Marine Directorate.\u003C\/p\u003E\n","id":"31be76ba-0c93-4b89-92cd-afa54780775d","image_display_url":"https:\/\/data.marine.gov.scot\/sites\/default\/files\/\/button%20220i-16.png","title":"Freshwater","name":"group\/freshwater"}]}]}