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Tesi etd-03042021-193959


Tipo di tesi
Tesi di laurea magistrale
Autore
CUTRONEO, ALICE
URN
etd-03042021-193959
Titolo
Migratory strategies of Stone-curlew Burhinus oedicnemus populations breeding in continental and Mediterranean regions of Italy
Dipartimento
BIOLOGIA
Corso di studi
CONSERVAZIONE ED EVOLUZIONE
Relatori
relatore Prof. Giunchi, Dimitri
Parole chiave
  • Burhinus oedicnemus
  • GPS tracking
  • migration
  • migratory phenology
Data inizio appello
23/03/2021
Consultabilità
Completa
Riassunto
Bird migration shows a great variability between species, populations and individuals, with multiple factors affecting its mechanisms. Routes and timings are endogenously regulated; however, birds should also consider environmental cues to cope with the interannual climatic variability. Migratory tendency varies both between populations occupying different geographical ranges and within the same population (i.e. partial migration). Furthermore, it is known the climatic influence on migratory phenologies, especially among short-distance migrants. We aimed to describe the migratory behavior of the partial migrant Eurasian stone-curlew Burhinus oedicnemus, by investigating different populations breeding in continental and Mediterranean Italy. GSM/GPS data were used to analyse the migratory tendency and to compare the time of departure, migratory speed and length among areas and seasons. Moreover, the possible role of exogenous factors on autumn departure time was investigated. Stone-curlews traveled short distance in a few days. Routes, wintering sites and autumn departures showed a large inter-individual variability. Departure probability appeared to increase with conditions hindering both foraging on soil invertebrates and a cheap bird thermoregulation (low temperature), and was probably influenced by those favoring weather (high atmospheric pressure). This study provides new data regarding the stone-curlew migratory strategies and could be useful for predicting how the species will react to the ongoing climate change.
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