Circumpolar status of Arctic ptarmigan: Population dynamics and trends.
Ambio
; 49(3): 749-761, 2020 Mar.
Article
em En
| MEDLINE
| ID: mdl-31073984
ABSTRACT
Rock ptarmigan (Lagopus muta) and willow ptarmigan (L. lagopus) are Arctic birds with a circumpolar distribution but there is limited knowledge about their status and trends across their circumpolar distribution. Here, we compiled information from 90 ptarmigan study sites from 7 Arctic countries, where almost half of the sites are still monitored. Rock ptarmigan showed an overall negative trend on Iceland and Greenland, while Svalbard and Newfoundland had positive trends, and no significant trends in Alaska. For willow ptarmigan, there was a negative trend in mid-Sweden and eastern Russia, while northern Fennoscandia, North America and Newfoundland had no significant trends. Both species displayed some periods with population cycles (short 3-6 years and long 9-12 years), but cyclicity changed through time for both species. We propose that simple, cost-efficient systematic surveys that capture the main feature of ptarmigan population dynamics can form the basis for citizen science efforts in order to fill knowledge gaps for the many regions that lack systematic ptarmigan monitoring programs.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Galliformes
Limite:
Animals
País/Região como assunto:
America do norte
/
Asia
/
Europa
Idioma:
En
Revista:
Ambio
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
Noruega