Otter
ECOSA have extensive experience in surveying for otter, including the identification of field signs associated with this species and the use of remote-sensing equipment to confirm presence, and to identify key foraging and commuting habitat.
Using our survey data to devise appropriate mitigation strategies, we have successful attained Natural England licences for development works affecting this species and its resting places. Mitigation works range from the establishment of temporary exclusion zones to the construction of artificial otter holts.
For further details on otter ecology, legal protection and survey methods, please see links below.
Status
The otter population across the UK is steady increasing. In the 1950’s otter populations underwent a significant decline as a result of the first widespread use of organochlorine pesticides. One of the current largest threats is loss of floodplain habitat. Otters require a diversity of wetland habitats for resting, breeding and feeding.
Ecology
Otters are found near rivers, streams, lakes, wetlands and estuaries and are mainly active at night and usually spend the day resting either underground in 'holts' or above ground in 'hovers' (or 'couches').
Protection Under UK Legislation
Otter is protected the Wildlife and Countryside Act, 1981 (as amended) and under the Conservation (Natural Habitats, &c.) Regulations 1994. It is an offence to:
- kill, injure or knowingly disturb an otter;
- to take an otter from the wild;
- to damage/obstruct a place of otter shelter/protection; and
- to disturb an otter while in a place of shelter.
The otter is also a UK Biodiversity Action Plan (BAP) Priority Species and there is a national Species Action Plan (SAP) for its conservation. The Countryside Rights of Way Act, 2000 requires that developers carry out otter surveys prior to obtaining planning permission.
Timing and Survey Methods
There are a number of techniques for the surveying of otter which can be carried out at any time of the year, although surveys are most successful in the summer and autumn periods. Survey methods involve the recording of otter signs such as footprints and spraints and an assessment of the suitability of habitat features.
Links
