The potential risk of injury and/or disturbance to marine mammals exposed to noise has been identified as a key risk. Possible consequences of exposure to underwater noise include: disturbance that could cause marine mammals to either move away or change behaviour, suffer temporary hearing damage or permanent physical injury. The interim PCoD model assesses what the longer term and larger scale impacts of these consequences are to the exposed group(s) of animals as a whole.
Interim Model: This model, written in R, is a protocol for implementing an interim version of the PCoD approach for assessing and quantifying the potential consequences for marine mammal populations of any disturbance and/or injury that may result from offshore energy developments. It has been designed to use the kinds of information that are likely to be provided by developers in their Environmental Statements and Habitats Regulations Assessments.
We emphasise the interim nature of this approach, which was developed to deal with the current situation, where there are limited data on the way in which changes in behaviour and hearing sensitivity may affect the ability of individual marine mammals to survive and to reproduce.