Non Native Species Across Wales (1989 to 2012)

This dataset contains species distrubution for non native species across Wales. Any non-native species present in a sample were recorded when they were of the target group, for example Signal Crayfish (Pacifastacus lenisculus) in a benthic invertebrate sample or Canadian pondweed (Elodea Canadensis) in a plant survey. Other non-native species are recorded when seen at or around monitoring sites. At the time of surveying between 1970s and 2012, non-native species did not have a specific monitoring programme. Formally known as AfA 226.本数据集涵盖威尔士全境的非本土物种分布情况。若样品中出现的非本土物种隶属于目标类群，则会被记录在册，例如底栖无脊椎动物样品中的信号螯虾（Signal Crayfish，学名Pacifastacus lenisculus），或是植物调查中的加拿大伊乐藻（Canadian pondweed，学名Elodea Canadensis）。其余非本土物种若在监测点位及其周边被观测到，同样会被记录。在1970年代至2012年的调查周期内，彼时尚未针对非本土物种设立专门的监测计划。该数据集正式编号为AfA 226。