RammSanderson Ecology provide a comprehensive service including a range of survey techniques for bats. We are proud to announce that our licensed bat ecologists are able to complete roped access tree assessments to assess features on trees for their potential to support roosting bats and to seek out evidence of bat roosts.
Our CS38 qualified tree climbers hold Natural England Bat Survey licences and this allows us to undertake more in depth, at height assessments of trees for their potential to support roosting bats.
Preliminary Ecological Appraisals and Ground Level Tree Assessments in accordance with the Chartered Institute of Ecological and Environmental Management (CIEEM) and the Bat Conservation Trust (BCT) are used to identify if trees, from ground level, contain suitable features for roosting bats. These ground level surveys can be limited and despite best efforts using torches and binoculars, features such as branch collar rot holes can, from ground appear to offer suitability for bats triggering the need for nocturnal surveys. By being able to climb trees and inspect from close range, often such features can be discounted as being unsuitable for roosting ruling out the need for further nocturnal surveys which are constrained by the bat active survey window of May to September.
Also, by climbing trees features identified from the ground can be closely visually inspected and where necessary and endoscope survey performed to confirm suitability or even the presence of a roost.
Tree climbing surveys can be undertaken at any time of the year removing potential delays to a project where a roped assessment can identify the tree as having negligible potential for roosting bats by being able to closely inspect features.
This service also enables RammSanderson to undertake mitigation projects under European Protected Species Licence for bats by fitting features such as bat exclusion devices, as well as installing compensatory bat boxes within trees.
Tree climbing is a cost effective way to survey multiple trees and between 8 and 10 trees can be climbed in a single day. Where these trees are discounted from the need for nocturnal survey therefore, a client can have a significant savings by comparison to nocturnal surveys of 10 trees requiring multiple separate visits per tree.