ArcGIS layers accompanying report Risk assessment of seabird bycatch in UK waters - MB0126

These data layers support the project Risk assessment of seabird bycatch in UK waters1, project MB0126, compiled by WWT Consulting.
This dataset contains shapefile layers for: location of waterbird Special Protection Areas, seabird foraging ranges, survey effort, seabird predicted densities, and associated Confidence Values from modelling, fishing effort, bycatch vulnerability and bycatch risk.
This is just a summary of layers present - please see full report (page 27) for fuller explanation and citation of data layers.
The following layers are included in groups:
❖ Display Layers
➢ UK Coastline polygon
➢ Marine waterbird Special Protection Areas
➢ Foraging ranges (Mean-maximum and Maximum)
➢ The 3km x 3km prediction grid used for modelling
❖ Survey Effort
➢ Survey effort for the English waters project 'SeaMaST' and those data analysed for this project 'MB1026 MRSea' as survey tracklines (with year and month provided as fields to allow queries by date) and summarised by season (summer (‘sum’) or winter (‘win’)) for each 3km x 3km grid cell
❖ Fishing Effort
➢ Mean number of hours for each gear type over the period 2009 to 2013
❖ Fishing effort – summarised
➢ The maximum values from the fishing effort raster layers extracted into each 3km x 3km grid cell by season
➢ The fishing effort summarised by whether the gear presents risk at the surface, pelagic (midwater) or bottom (benthic) for each season
❖ Density
➢ Density predictions on the 3km x 3km grid from the MB0126 MRSea modelling undertaken by CREEM, corrected densities for rarer species and those done for SeaMaST for each species in each season
❖ Confidence Values
➢ Confidence Values associated with the density predictions in each 3km x 3km grid cell from the MB0126 MRSea modelling undertaken by CREEM and that done for SeaMaST for each species in each season
❖ Vulnerability
➢ Six shapefiles showing the relative vulnerability to surface, pelagic or benthic bycatch in summer or winter across the study area summed for all species
❖ Risk
➢ Six shapefiles showing the relative bycatch risk to surface, pelagic or benthic bycatch in summer or winter across the study area for all species combined. These are the product of the vulnerability layers and the fisheries effort layers

http://randd.defra.gov.uk/Default.aspx?Menu=Menu&Module=More&Location=None&ProjectID=18967&FromSear
ch=Y&Publisher=1&SearchText=MB0126&SortString=ProjectCode&SortOrder=Asc&Paging=10#Description Attribution statement: © Crown Copyright

本数据集支持英国水域海鸟误捕风险评估项目（项目编号MB0126），由WWT咨询公司编制。该数据集包含以下矢量图层：水鸟特别保护区域的位置、海鸟觅食范围、调查工作量、海鸟预测密度以及建模、捕捞工作量、误捕易损性和误捕风险相关的置信度值。此仅为图层概述——请参阅完整报告（第27页）以获取更详细的解释和数据图层引用。以下图层被分组包括：❖ 显示图层：➢ 英国海岸线多边形➢ 海洋水鸟特别保护区域➢ 觅食范围（平均值-最大值和最大值）➢ 用于建模的3公里x3公里预测网格❖ 调查工作量：➢ 英格兰水域“SeaMaST”项目以及为本项目“MB1026 MRSea”分析的数据的调查工作量（以年月作为字段提供，以便按日期进行查询）以及按季节（夏季（‘sum’）或冬季（‘win’））对每个3公里x3公里网格单元进行总结❖ 捕捞工作量：➢ 2009年至2013年期间每种渔具类型的平均小时数❖ 捕捞工作量——汇总：➢ 从捕捞工作量栅格图层中提取到每个3公里x3公里网格单元的最大值，按季节汇总➢ 捕捞工作量按渔具是否在水面、上层水域（中层水）或底层（底栖）存在风险进行季节性汇总❖ 密度：➢ 来自CREEM进行的MB0126 MRSea建模的3公里x3公里网格上的密度预测，以及为罕见物种和SeaMaST项目每个物种每个季节进行的校正密度预测❖ 置信度值：➢ 来自CREEM进行的MB0126 MRSea建模以及SeaMaST项目每个物种每个季节的密度预测的置信度值，与每个3公里x3公里网格单元相关❖ 易损性：➢ 六个矢量图层，展示研究区域内对水面、上层水域或底栖误捕的相对易损性，按所有物种汇总❖ 风险：➢ 六个矢量图层，展示研究区域内对所有物种的表面、上层水域或底栖误捕风险的相对风险，这些是易损性图层和渔捞工作量图层的乘积。