La Tour du Valat

Article

Lowering the cost of citizen science: can we reduce the number of sampling visits in a constant ringing effort-based monitoring program?

Juan Arizaga, Auteur ; Arine Crespo, Auteur ; Agurtzane Iraeta, Auteur

Dans Journal of Ornithology (164(1) January, 2023)

Volunteer-based (i.e., citizen science) monitoring schemes constitute a basic piece for the long-term monitoring of bird populations. This work aims to determine whether we can reduce the sampling effort, in terms of number of sampling journeys [...]

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Article

Yearly variation in the structure and diversity of a non-breeding passerine bird community in a Mediterranean wetland

Juan Arizaga, Auteur ; Daniel Alonso, Auteur ; Arine Crespo, Auteur ; Xabier Esparza, Auteur ; Efrén Fernández, Auteur ; Iñigo López, Auteur ; David Martín, Auteur ; Antonio Vilches, Auteur

Dans Avian Research (11(1) March, 2020)

The dynamics and structure of many bird communities are changing due to the global warming and changes in the land use and management. The Ebro Valley constitutes one of the chief wintering areas for several passerine species in Iberia, and the [...]

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Article

Site- and species-specific fuel load of European-Afrotropical passerines on arrival at three oases of southeast Morocco during spring migration

Juan Arizaga, Auteur ; Ivan Maggini, Auteur ; Fadwa Hama, Auteur ; Arine Crespo, Auteur ; Gabriel Gargallo, Auteur

Dans Bird Study (60(1) FEB 1 2013)

Capsule Arrival fuel load of migratory passerine birds after the Sahara crossing in spring varied between oases of different habitat quality. Aims To test: (1) if spring migrants reaching northern Africa with low fuel stopover in oases of specie[...]

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