BUSCADOR RECOLECTA

This is a capture-recapture database of adult Scopoli’s shearwaters Calonectris diomedea breeding at the Aire islet, Menorca, from 1999 to 2018., Capture-recapture database of Scopoli’s shearwaters Calonectris diomedea diomedea breeding at the Aire islet, Menorca., Peer reviewed

Hibernation has been selected for increasing survival in harsh climatic environments. Seasonal variability in temperature may push body temperature of hibernating animals across boundaries of alternative states between euthermic temperature and torpor temperature, typical of either hibernation or summer dormancy. Nowadays, wearable electronics open a promising avenue to analyse the dynamics of criticality of physiological systems, such as body temperature fluctuating between activity and hibernation. We deployed temperature loggers to two hibernating edible dormice during a whole year under Mediterranean mild climate. Highly stochastic dynamical body temperatures with sudden switches allowed us to assess the occurrence of leading indicators of tipping points when approaching a critical transition. Hibernation dynamics showed flickering, which signalled the emergence of alternative attractors. More particularly, body temperature shifted between the alternative states far from the separating bifurcation points, which indicated the existence of long transients in hibernation dynamics. Flickering increased when body temperatures approached bifurcations. Gradual changes in air temperature drove saddle-node bifurcations in body temperatures between activity and hibernation, and the system showed hysteresis. Most metric- and model-based indicators anticipated critical transitions. For hibernating animals, hysteresis may increase resilience to end hibernation earlier than the optimal time, which may occur in regions where temperatures are sharply rising, especially during winter. Temporal changes in early indicators of critical transitions in hibernation dynamics may help to understand the effects of climate on evolutionary life histories and the plasticity of hibernating organisms to cope with shortened hibernation due to global warming., Peer reviewed

Data: Stable isotope values of the 13th secondary feather as a proxy of trophic level and diet; Geolocation-immersion loggers data to infer spatio-temporal distribution and migratory phenology., Localització: Las colonias de cría de las aves estudiadas en el artículo son en España (Pantaleu islet, Balearic Islands; Montaña Clara, Canary Islands; Veneguera, Canary Islands), Portugal (Vila islet, Azores Islands) y Cabo Verde (Curral Velho islet)., Dades primàries associades a l'article publicat a Ecology and Evolution, vol 9, núm. 18, p. 10145-10162, 2019 disponible a https://doi.org/10.1002/ece3.5501, We evaluated the degree of sexual segregation (SS) in the feeding ecology, in the choice of main non-breeding areas, in behaviour and in migratory phenology of three closely related shearwaters: Scopoli’s, Cory’s and Cape Verde shearwaters (Calonectris diomedea, C. borealis and C. edwardsii, respectively) during the non-breeding period in relation to the conditions of their different life strategies. The main objective of the study is to better understand the ecological and evolutionary role of sex on the spatial, behavioural and feeding ecology of birds during the non-breeding period, since most studies on birds have focused on the breeding period. The referred issues were addressed through a multidisciplinary approach combining geolocation and stable isotope data.