A population viability analysis modelling tool for seabird species.

Published online
18 Jul 2022
Published by
Natural England
Content type

Searle, K. & Mobbs, D. & Daunt, F. & Butler, A.

Publication language


This report discusses a project which aims to develop a Population Viability Analysis (PVA) modelling framework, applicable to seabirds at a variety of scales, with a front-end, interactive web application user interface to allow users to set-up and run their own PVA models for seabird species without the need for access to specific software. The tool can be used to assess any type of impact that changes survival or productivity rates, or as a cull or harvest of a fixed size per year. The tool also allows users to conduct PVAs at a range of scales (breeding colony to SPA or region). The tool produces a range of tabular and graphical outputs for interpreting outputs from PVAs, and a facility for using pre-set demographic rates for 15 species of seabirds based on currently available demographic data.

Key words