The Role of Habitat Enhancement in the Return of the European Otter (Lutra lutra) to Northumberland

Riparian habitat enhancement, or 'haven' creation, is considered to be the best way to facilitate the return of the UK's otter population to its former status. Using map and statistical analysis, results of Northumberland county otter surveys and the habitat improvements implemented by the North Northumberland Otter Project are examined and relationships between the two are identified. A statistically significant increase in the incidence of positive survey sites was identified between 1991 and 1995, and this increase was statistically related spatially to the creation of otter havens.