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Article
Maria Mateos-Rodriguez, Auteur ; Len Thomas, Auteur ; Gonzalo M. Arroyo, AuteurIn some conservation situations, there is a need for estimates of numbers of seabirds migrating past a specific site, such as sites of proposed offshore wind farms. Migration counts from points strategically located on the coast can be a reliabl[...]
Article
Rob Williams, Auteur ; Len Thomas, AuteurTop predators are often rare, subject to anthropogenic mortality, and possess life-history traits that make them inherently vulnerable to extinction. IUCN criteria recognise populations as Critically Endangered when abundance is
Article
Tiago A. Marques, Auteur ; Len Thomas, Auteur ; Stephen W. Martin, Auteur ; David K. Mellinger, Auteur ; Susan Jarvis, Auteur ; Ronald P. Morrissey, Auteur ; Carroll-Anne Ciminello, Auteur ; Nancy DiMarzio, AuteurEstimation of cetacean abundance or density using visual methods can be cost-ineffective under many scenarios. Methods based on acoustic data have recently been proposed as an alternative, and could potentially be more effective for visually elu[...]
