The Natural Environment Research Council (NERC) is a partner organisation within UK Research and Innovation (UKRI). UKRI is a new entity that brings together nine partners to create an independent organisation with a strong voice for research and innovation and a vision to ensure the UK maintains its world-leading position in research and innovation. The Centre for Ecology & Hydrology (CEH) is part of the Natural Environment Research Council (NERC) and is the UK's Centre of Excellence for integrated research in terrestrial and freshwater ecosystems and their interaction with the atmosphere. Working in partnership with the research community, policy makers, industry and society, CEH undertakes cutting edge research to deliver world class solutions to the most complex environmental challenges facing humankind. CEH has an annual turnover of £35 million and employs staff across four sites; the headquarters is at Wallingford with further sites at Bangor, Edinburgh and Lancaster. CEH's research underpins our understanding of the environment and the processes that support life on Earth. We undertake large-scale monitoring and experimentation to detect and predict the causes and consequences of environmental change. Our science is managed and delivered through integrated science. Study of invasive alien species and their interactions with their environment are central to this.