Migração altitudinal

Os carneiros-selvagens migram entre os cumes das montanhas, onde se encontram a salvo de predadores, e os vales, onde existe comida no inverno.

A migração altitudinal é uma migração animal de curta distância de menores altitudes para maiores altitudes e vice-versa.[1][2] Pensa-se que ocorra em resposta às alterações no clima e na disponibilidade de comida e, cada vez mais, devido ao impacto antropogénico.[3][4] These migrations can occur both during reproductive and non-reproductive seasons.[5] A migração de aves altitudinal é bastante comum, verificando-se também noutros vertebrados e em alguns invertebrados.[3][6]

Referências

  1. ↑ Boyle, Alice W.; Conway, Courtney J.; Bronstein, Judith L. (13 de julho de 2013). «Why do some, but not all, tropical birds migrate? A comparative study of diet breadth and fruit preference». Evolutionary Ecology. 25: 219–236. doi:10.1007/s10682-010-9403-4 
  2. ↑ Boyle, Alice W.; Norris, Ryan D.; Guglielmo, Christopher G. (2010). «Storms drive altitudinal migration in a tropical bird». Proc. R. Soc. B. 277: 2511–2519. doi:10.1098/rspb.2010.0344 
  3. ↑ a b Hobson, Keith A.; Wassenaar, Len I.; Milá, Borja; Lovette, Irby; Dingle, Caroline; Smith, Thomas B. (20 de maio de 2003). «Stable isotopes as indicators of altitudinal distributions and movements in an Ecuadorean hummingbird community». Community Ecology. 136: 302–308. doi:10.1007/s00442-003-1271-y. Consultado em 2 de dezembro de 2014 
  4. ↑ Fothergill, Alastair (2006). Planet Earth: The Future-Saving Species. BBC Natural History Unit 
  5. ↑ Park, Chris (2007). A Dictionary of Environment and Conservation. University of Florida: Oxford University Press. ISBN 9780198609957. Consultado em 2 de dezembro de 2014. (pede subscrição (ajuda)) 
  6. ↑ McGuire, Liam P.; Boyle, Alice W. (11 de março de 2013). «Altitudinal migration in bats: evidence, patterns, and drivers». Biological Reviews. 88 (4): 767–786. doi:10.1111/brv.12024. Consultado em 2 de dezembro de 2014 
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