An assessment of survey methods to estimate spring density of two ptarmigan species in arctic Norway

• Main Authors: Delaye, Aurélie, Strømeng, Marita Anti
• Format: Master Thesis
• Language: English
• Published: UiT Norges arktiske universitet 2016
• Subjects: Ecology; Lagopus lagopus; Lagopus muta; inter-specific comparison; density estimation; distance sampling; detection probability; Survey design; spring survey; point count; VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488; VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488; BIO-3950; Arctic; Norway; Survey Point; Climate change; rock ptarmigan; Tundra
• Online Access: https://hdl.handle.net/10037/9260

Both Willow ptarmigan (Lagopus lagopus) and Rock ptarmigan (Lagopus muta) are important game species in mainland Norway, but were recently added to the Norwegian Red List due to long-term population declines. Yet the knowledge about the population dynamics and the underlying drivers of both species...