Integrating Habitat and Partial Survey Data to Estimate the Regional Population of a Globally Declining Seabird Species, the Sooty Shearwater
Global Ecology and Conservation 17 (2019) e00554 Contents lists available at ScienceDirect Global Ecology and Conservation journal homepage: http://www.elsevier.com/locate/gecco Original Research Article Integrating habitat and partial survey data to estimate the regional population of a globally declining seabird species, the sooty shearwater * Tyler J. Clark a, , 1, Jason Matthiopoulos a, Anne-Sophie Bonnet-Lebrun b, c, Letizia Campioni d, Paulo Catry d, Ilaria Marengo e, Sally Poncet f, Ewan Wakefield a a Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, G12 8QQ, UK b Department of Zoology, University of Cambridge, Cambridge, CB2 3EJ, UK c Centre d’Ecologie Fonctionnelle et Evolutive CEFE UMR 5175, CNRS - Universite de Montpellier - Universite Paul-Valery Montpellier e EPHE, France d MARE e Marine and Environmental Sciences Centre, ISPA - Instituto Universitario, 1149-041, Lisboa, Portugal e SAERI - South Atlantic Environmental Research Institute, Stanley, Falkland Islands, FIQQ 1ZZ, UK f The Antarctic Research Trust, Stanley, Falkland Islands, FIQQ 1ZZ, UK article info abstract Article history: Many animal populations are thought to be in flux due to anthropogenic impacts. How- Received 21 November 2018 ever, censusing organisms to understand such changes is often impractical. For example, Accepted 3 February 2019 while it is thought that over half of pelagic seabird populations are declining, most breed in burrows or on cliffs, in large, remote colonies, making them difficult to count. Burrow- Keywords: nesting sooty shearwaters (Ardenna grisea) are abundant but declining in their core (South Ardenna grisea Pacific) breeding range, potentially due to introduced rodents and habitat loss. In contrast, Burrowing petrels Kidney Island, their largest colony in the Falkland Islands (Southwest Atlantic), purportedly Habitat preference Puffinus griseus grew by several orders of magnitude since the mid-1900s.
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