4f4c4942-4343-5764-6473-313234383037 eng dataset Natural Resources Wales (NRW) 0300 065 3000 Maes-y-Ffynnon LL57 2DW enquiries@naturalresourceswales.gov.uk pointOfContact 2023-02-01 Gemini 2.2 urn:ogc:def:crs:EPSG::WGS84 OGP Marine Invasive Non-Native Species (INNS) Pathways Heatmaps for Wales 2020 ABPmer INNS Pathway Maps Mapiau Gwres o Lwybrau Rhywogaethau Estron Goresgynnol Morol ar gyfer Cymru 2020 2020-09-01 publication 124807 https://naturalresources.wales Heatmaps (geodatabases) were created for invasive non-native species pathways in Welsh waters including commercial shipping, recreational boating, aquaculture, fishing and offshore activities. Heatmaps were produced at both 2km x 2km and 5km x 5km resolutions and have associated symbology layers. An overall heatmap was also produced to highlight key areas which are likely most at risk from invasion of invasive non-native species. This assessment provides a valuable insight into hotspots related to each potential pathway of introduction, the areas where the main areas of risk overlap for the different pathways and their overlap with protected areas. The outputs from this assessment can form the basis to underpin biosecurity planning. It should be noted, however, that this was a national scale mapping exercise based only on freely available datasets, which themselves have limitations and possible inaccuracies due to incomplete coverage, both temporally and spatially. The scorings applied to the input datasets and weightings applied to the introduction pathways are also based on available literature and expert judgement. Site-specific activities and conditions will always be an important consideration, as well as temporal variations. Natural Resources Wales (NRW) 0300 065 3000 Maes-y-Ffynnon LL57 2DW enquiries@naturalresourceswales.gov.uk owner Natural Resources Wales (NRW) 0300 065 3000 Maes-y-Ffynnon LL57 2DW enquiries@naturalresourceswales.gov.uk originator notPlanned Geographic Information System Land use GEMET - INSPIRE themes, version 1.0 2023-02-02 publication © CNC/NRW All rights Reserved. © RYA. © Crown Estate. © ABPmer. © Cefas. Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and copyright of the owners. It is the recipient's responsibility to ensure the data is fit for the intended purpose. otherRestrictions There are no access restrictions on this data. NRW may release, publish or disseminate it freely. eng environment ISO3166 Countries 2023-02-02 publication Wales (WLS) -5.77774100 -2.60886500 51.24082900 53.51306700 2019-01-01 2019-12-31 Dewey, N., Pack, K, Williamson, D, Walsh, A. 2020. Welsh Marine Invasive Non-Native Pathways Assessment NRW Evidence Report No: 459, 105pp, Natural Resources Wales, Bangor Natural Resources Wales (NRW) 0300 065 3000 Maes-y-Ffynnon LL57 2DW enquiries@naturalresourceswales.gov.uk distributor https://datamap.gov.wales/layergroups/geonode:nrw_marine_inns_pathways_heatmaps_for_wales_2020 View and Download https://datamap.gov.wales/capabilities/layergroup/3602/?access_token=ROzgOepbAX9fb1nAj3w5G2Jf4xCIAl&ows_service=wms Web Service dataset The approach applied in this study, used data acquired from readily available, open licence sources where possible. A hexagonal grid, clipped to the extent of the Welsh marine planning area, with cell size of 5 km2 was created in ArcGIS and this was spatially joined to input data layers, representative of the introduction pathways, to create heatmaps. A series of heatmaps were created for each of the introduction pathways, using a scaled scoring method. A final combined heatmap of all introduction pathways was also created by applying weightings to the different pathways. Figures of all heatmaps were created, as well as figures of designated sites overlying the final combined heatmap to show sites at potentially greater risk from the introduction of marine INNS . The Celtic Sea (including Welsh and Irish waters) has approximately two to three new introductions of non-indigenous species every year (European Environment Agency (EEA), 2015; 2019a). Identifying coastal areas where invasive non-native species (INNS) are more likely to be introduced is a valuable tool which will help to focus management efforts and identify sensitive areas which may be at a higher risk. Mapping the intensity of introduction pathway activities can aid the identification of these higher risk areas. This report provides an update to the work carried out by Tidbury et al. in 2014, which considered the potential for the introduction of INNS in coastal areas of UK and Ireland using a 50 km x 50 km grid. This study focuses only on Welsh waters and at a higher spatial reso lution than the original study.