Browsing by Author "Oro, Daniel"
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- Global phenological insensitivity to shifting ocean temperatures among seabirdsPublication . Keogan, Katharine; Daunt, Francis; Wanless, Sarah; Phillips, Richard A.; Walling, Craig A.; Agnew, Philippa; Ainley, David G.; Anker-Nilssen, Tycho; Ballard, Grant; Barrett, Robert T.; Barton, Kerry J.; Bech, Claus; Becker, Peter; Berglund, Per-Arvid; Bollache, Loïc; Bond, Alexander L.; Bouwhuis, Sandra; Bradley, Russell W.; Burr, Zofia M.; Camphuysen, Kees; Catry, Paulo; Chiaradia, Andre; Christensen-Dalsgaard, Signe; Cuthbert, Richard; Dehnhard, Nina; Descamps, Sébastien; Diamond, Tony; Divoky, George; Drummond, Hugh; Dugger, Katie M.; Dunn, Michael J.; Emmerson, Louise; Erikstad, Kjell Einar; Fort, Jérôme; Fraser, William; Genovart, Meritxell; Gilg, Olivier; González-Solís, Jacob; Granadeiro, José Pedro; Grémillet, David; Hansen, Jannik; Hanssen, Sveinn A.; Harris, Mike; Hedd, April; Hinke, Jefferson; Igual, José Manuel; Jahncke, Jaime; Jones, Ian; Kappes, Peter J.; Lang, Johannes; Langset, Magdalene; Lescroël, Amélie; Lorentsen, Svein-Håkon; Lyver, Phil O’B.; Mallory, Mark; Moe, Børge; Montevecchi, William A.; Monticelli, David; Mostello, Carolyn; Newell, Mark; Nicholson, Lisa; Nisbet, Ian; Olsson, Olof; Oro, Daniel; Pattison, Vivian; Poisbleau, Maud; Pyk, Tanya; Quintana, Flavio; Ramos, Jaime A.; Ramos, Raül; Reiertsen, Tone Kirstin; Rodríguez, Cristina; Ryan, Peter G.; Sanz-Aguilar, Ana; Schmidt, Niels M.; Shannon, Paula; Sittler, Benoit; Southwell, Colin; Surman, Christopher; Svagelj, Walter S.; Trivelpiece, Wayne; Warzybok, Pete; Watanuki, Yutaka; Weimerskirch, Henri; Wilson, Peter R.; Wood, Andrew G.; Phillimore, Albert B.; Lewis, SueReproductive timing in many taxa plays a key role in determining breeding productivity1, and is often sensitive to climatic conditions2. Current climate change may alter the timing of breeding at different rates across trophic levels, potentially resulting in temporal mismatch between the resource requirements of predators and their prey3. This is of particular concern for highertrophic- level organisms, whose longer generation times confer a lower rate of evolutionary rescue than primary producers or consumers4. However, the disconnection between studies of ecological change in marine systems makes it difficult to detect general changes in the timing of reproduction5. Here, we use a comprehensive meta-analysis of 209 phenological time series from 145 breeding populations to show that, on average, seabird populations worldwide have not adjusted their breeding seasons over time (− 0.020 days yr−1) or in response to sea surface temperature (SST) (− 0.272 days °C−1) between 1952 and 2015. However, marked between-year variation in timing observed in resident species and some Pelecaniformes and Suliformes (cormorants, gannets and boobies) may imply that timing, in some cases, is affected by unmeasured environmental conditions. This limited temperature-mediated plasticity of reproductive timing in seabirds potentially makes these top predators highly vulnerable to future mismatch with lower-trophic-level resources.
- Global political responsibility for the conservation of albatrosses and large petrelsPublication . Beal, Martin; Dias, Maria P.; Phillips, Richard A.; Oppel, Steffen; Hazin, Carolina; Pearmain, Elizabeth J.; Adams, Josh; Anderson, David J.; Antolos, Michelle; Arata, Javier; Arcos, José Manuel; Arnould, John P. Y.; Awkerman, Jill; Bell, Elizabeth; BELL, Mike; Carey, Mark; Carle, Ryan; Clay, Thomas A.; Cleeland, Jaimie; Colodro, Valentina; Conners, Melinda; Flores, Marta Cruz; Cuthbert, Richard; Delord, Karine; Deppe, Lorna; Dilley, Ben J.; Dinis, Herculano; Elliott, Graeme; De Felipe, Fernanda; Felis, Jonathan; Forero, Manuela G.; Freeman, Amanda; Fukuda, Akira; González-Solís, Jacob; Granadeiro, J. P.; Hedd, April; Hodum, Peter; Igual, Jose Manuel; Jaeger, Audrey; Landers, Timothy; Le Corre, Matthieu; Makhado, Azwianewi; Metzger, Benjamin; Militão, Teresa; Montevecchi, William A.; Pujol, Virginia Morera; Herrero, Leia Navarro; Nel, Deon; Nicholls, David; Oro, Daniel; Ouni, Ridha; Ozaki, Kiyoaki; Quintana, Flavio; Ramos, Raül; Reid, Tim; Reyes-González, José Manuel; Robertson, Christopher; Robertson, Graham; Romdhane, Mohamed Salah; Ryan, Peter G.; Sagar, Paul; Sato, Fumio; Schoombie, Stefan; Scofield, Richard; Shaffer, Scott; Shah, Nirmal Jivan; Stevens, Kim L.; Surman, Christopher; Suryan, Robert M.; Takahashi, Akinori; Tatayah, Vikash; Taylor, Graeme; Thompson, David R.; Torres, Leigh; Walker, Kath; Wanless, Ross; Waugh, Susan M.; Weimerskirch, Henri; Yamamoto, Takashi; Zajkova, Zuzana; Zango, Laura; Catry, PauloMigratory marine species cross political borders and enter the high seas, where the lack of an effective global management framework for biodiversity leaves them vulnerable to threats. Here, we combine 10,108 tracks from 5775 individual birds at 87 sites with data on breeding population sizes to estimate the relative year-round importance of national jurisdictions and high seas areas for 39 species of albatrosses and large petrels. Populations from every country made extensive use of the high seas, indicating the stake each country has in the management of biodiversity in international waters. We quantified the links among national populations of these threatened seabirds and the regional fisheries management organizations (RFMOs) which regulate fishing in the high seas. This work makes explicit the relative responsibilities that each country and RFMO has for the management of shared biodiversity, providing invaluable information for the conservation and management of migratory species in the marine realm.
- Methods to detect spatial biases in tracking studies caused by differential representativeness of individuals, populations and timePublication . Pujol, Virginia Morera; Catry, Paulo; Magalhães, Maria; Peron, Clara; Reyes‐González, José Manuel; Granadeiro, José P.; Militão, Teresa; Dias, Maria P.; Oro, Daniel; Dell'Omo, Giacomo; Müller, Martina; Paiva, Vitor H.; Metzger, Benjamin; Neves, V C; Navarro, Joan; Karris, Georgios; Xirouchakis, Stavros; Cecere, Jacopo G.; Zamora‐López, Antonio; Forero, Manuel G.; Ouni, Ridha; Romdhane, Mohamed Salah; De Felipe, Fernanda; Zajková, Zuzana; Cruz‐Flores, Marta; Grémillet, David; González‐Solís, Jacob; Ramos, RaülAim Over the last decades, the study of movement through tracking data has grown exceeding the expectations of movement ecologists. This has posed new challenges, specifically when using individual tracking data to infer higher-level distributions (e.g. population and species). Sources of variability such as individual site fidelity (ISF), environmental stochasticity over time, and space-use variability across species ranges must be considered, and their effects identified and corrected, to produce accurate estimates of spatial distribution using tracking data. Innovation We developed R functions to detect the effect of these sources of variability in the distribution of animal groups when inferred from individual tracking data. These procedures can be adapted for their use in most tracking datasets and tracking techniques. We demonstrated our procedures with simulated datasets and showed their applicability on a real-world dataset containing 1346 year-round migratory trips from 805 individuals of three closely related seabird species breeding in 34 colonies in the Mediterranean Sea and the Atlantic Ocean, spanning 10 years. We detected an effect of ISF in one of the colonies, but no effect of the environmental stochasticity on the distribution of birds for any of the species. We also identified among-colony variability in nonbreeding space use for one species, with significant effects of population size and longitude. Main conclusions This work provides a useful, much-needed tool for researchers using animal tracking data to model species distributions or establish conservation measures. This methodology may be applied in studies using individual tracking data to accurately infer the distribution of a population or species and support the delineation of important areas for conservation based on tracking data. This step, designed to precede any analysis, has become increasingly relevant with the proliferation of studies using large tracking datasets that has accompanied the globalization process in science driving collaborations and tracking data sharing initiatives.
- Migratory Connectivity and Non‐Breeding Habitat Segregation Across Biogeographical Scales in Closely Related Seabird TaxaPublication . Morera‐Pujol, Virginia; Catry, Paulo; Magalhães, Maria; Péron, Clara; Reyes‐González, José Manuel; Granadeiro, José Pedro; Militão, Teresa; Dias, Maria P.; Oro, Daniel; Igual, José Manuel; Dell'Omo, Giacomo; Müller, Martina; Paiva, Vitor H.; Metzger, Benjamin; Neves, Verónica; Navarro, Joan; Karris, Georgios; Xirouchakis, Stavros; Cecere, Jacopo G.; Zamora‐Marín, José Manuel; Forero, Manuela G.; Afán, Isabel; Ouni, Ridha; Romdhane, Mohamed Salah; Felipe, Fernanda De; Zajková, Zuzana; Cruz‐Flores, Marta; Grémillet, David; González‐Solís, Jacob; Ramos, RaülIn highly mobile species, Migratory Connectivity (MC) has relevant consequences in population dynamics, genetic mixing, conservation and management. Additionally, in colonially breeding species, the maintenance of the breeding geographical structure during the non‐breeding period, that is, a strong MC, can promote isolation and population divergence, which ultimately can affect the process of lineage sorting. In geographically structured populations, studying the MC and differences in environmental preferences among colonies, populations, or taxa can improve our understanding of the ecological divergence among them.We investigated the MC and non‐breeding ecological niche of three seabird taxa from the genus colonies, we assess the level (from taxa to colony) at which MC and non‐breeding spatial and environmental segregation emerge. At a taxon level, we found a clear difference in the non‐breeding distributions between Cory's. and Scopoli's shearwaters, and a clear ecological divergence between Cory's and Cape Verde shearwaters. At an intermediate aggregation level, we found that birds breeding in proximity had similar non‐breeding habitat preferences, while birds breeding in very distant colonies (and therefore classified in different populations) had different non‐breeding habitat preferences. Furthermore, within each taxon, we found more structure (i.e. stronger MC) and non‐breeding divergence at an intermediate aggregation level than at the colony scale, where MC was weak. Main Conclusions These results suggest that conspecifics from nearby colonies mix in common non‐breeding areas, but not with birds from more distant colonies or different taxa. These results support the need for management and conservation strategies that take into account this structure when dealing with migratory species with high connectivity.