Otter havens in norfolk & suffolk, England

Abstract

The aims and basic principles underlying the establishment of otter havens are set out. Two types are described, one giving maximum protection to both the otter and its habitat (M Areas) and the other less rigid protection in areas where the habitat is not so suitable owing to lack of cover (P Areas). River management is discussed and the conclusion drawn that the establishment of otter havens is likely to be practical and effective only in the upper, privately owned stretches of a river, although public bodies may be encouraged to keep the otter's needs in mind when planning works on the lower, publicly owned and navigable stretches. The successful establishment of havens requires the co-operation of riparian owners, farmers, fishing interests, the Regional Water Authority and Internal Drainage Boards. The procedure adopted by the Otter Trust in succesfully establishing havens on three river systems in East Anglia is described and details given for the Rivers Waveney, Wissey and Thet. The importance of regular monitoring of otter movements before and after the establishment of havens is stressed. It is emphasised that the establishment of otter havens is a long term action with little possibility of quick results. Furthermore the techniques developed are still in the experimental stage and only time and regular monitoring combined with population surveys will show whether they can make a practical contribution towards otter conservation. Freedom from disturbance and plenty of cover are the key factors for a successful haven.