15 results on '"De Felipe, Fernanda"'
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2. Supporting information S1 to “Methods to detect spatial biases in tracking studies caused by differential representativeness of individuals, populations, and time”
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Morera-Pujol, Virgin [morera.virginia@gmail.com], Morera-Pujol, Virginia, Catry, Paulo, Magalhães, Maria, Perón, Clara, Reyes-González, José M., Granadeiro, José Pedro, Militão, Teresa, Dias, Maria P., Oro, Daniel, Dell'Omo, Giacomo, Müller, Martina, Paiva, Vitor H., Metzger, Benjamin, Neves, Verónica, Navarro, Joan, Karris, Georgios, Xirouchakis, Stavros, Cecere, Jacopo G., Zamora-López, Antonio, Forero, Manuela G., Ouni, Ridha, Romdhane, Mohamed Salah, De Felipe, Fernanda, Zajková, Zuzana, Cruz-Flores, Marta, Grémillet, David, González-Solís, Jacob, Ramos, Raül, Morera-Pujol, Virgin [morera.virginia@gmail.com], Morera-Pujol, Virginia, Catry, Paulo, Magalhães, Maria, Perón, Clara, Reyes-González, José M., Granadeiro, José Pedro, Militão, Teresa, Dias, Maria P., Oro, Daniel, Dell'Omo, Giacomo, Müller, Martina, Paiva, Vitor H., Metzger, Benjamin, Neves, Verónica, Navarro, Joan, Karris, Georgios, Xirouchakis, Stavros, Cecere, Jacopo G., Zamora-López, Antonio, Forero, Manuela G., Ouni, Ridha, Romdhane, Mohamed Salah, De Felipe, Fernanda, Zajková, Zuzana, Cruz-Flores, Marta, Grémillet, David, González-Solís, Jacob, and Ramos, Raül
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- 2023
3. Supporting information S2 to “Methods to detect spatial biases in tracking studies caused by differential representativeness of individuals, populations, and time”
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Morera-Pujol, Virginia, Catry, Paulo, Magalhães, Maria, Perón, Clara, Reyes-González, José M., Granadeiro, José Pedro, Militão, Teresa, Dias, Maria P., Oro, Daniel, Dell'Omo, Giacomo, Müller, Martina, Paiva, Vitor H., Metzger, Benjamin, Neves, Verónica, Navarro, Joan, Karris, Georgios, Xirouchakis, Stavros, Cecere, Jacopo G., Zamora-López, Antonio, Forero, Manuela G., Ouni, Ridha, Romdhane, Mohamed Salah, De Felipe, Fernanda, Zajková, Zuzana, Cruz-Flores, Marta, Grémillet, David, González-Solís, Jacob, Ramos, Raül, Morera-Pujol, Virginia, Catry, Paulo, Magalhães, Maria, Perón, Clara, Reyes-González, José M., Granadeiro, José Pedro, Militão, Teresa, Dias, Maria P., Oro, Daniel, Dell'Omo, Giacomo, Müller, Martina, Paiva, Vitor H., Metzger, Benjamin, Neves, Verónica, Navarro, Joan, Karris, Georgios, Xirouchakis, Stavros, Cecere, Jacopo G., Zamora-López, Antonio, Forero, Manuela G., Ouni, Ridha, Romdhane, Mohamed Salah, De Felipe, Fernanda, Zajková, Zuzana, Cruz-Flores, Marta, Grémillet, David, González-Solís, Jacob, and Ramos, Raül
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- 2023
4. Methods to detect spatial biases in tracking studies caused by differential representativeness of individuals, populations and time
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Agencia Estatal de Investigación (España), European Commission, Ministerio de Economía y Competitividad (España), Ministerio de Ciencia, Innovación y Universidades (España), Morera-Pujol, Virginia, Catry, Paulo, Magalhães, Maria, Perón, Clara, Reyes-González, José M., Granadeiro, José Pedro, Militão, Teresa, Dias, Maria P., Oro, Daniel, Dell'Omo, Giacomo, Müller, Martina, Paiva, Vitor H., Metzger, Benjamin, Neves, Verónica, Navarro, Joan, Karris, Georgios, Xirouchakis, Stavros, Cecere, Jacopo G., Zamora-López, Antonio, Forero, Manuela G., Ouni, Ridha, Romdhane, Mohamed Salah, De Felipe, Fernanda, Zajková, Zuzana, Cruz-Flores, Marta, Grémillet, David, González-Solís, Jacob, Ramos, Raül, Agencia Estatal de Investigación (España), European Commission, Ministerio de Economía y Competitividad (España), Ministerio de Ciencia, Innovación y Universidades (España), Morera-Pujol, Virginia, Catry, Paulo, Magalhães, Maria, Perón, Clara, Reyes-González, José M., Granadeiro, José Pedro, Militão, Teresa, Dias, Maria P., Oro, Daniel, Dell'Omo, Giacomo, Müller, Martina, Paiva, Vitor H., Metzger, Benjamin, Neves, Verónica, Navarro, Joan, Karris, Georgios, Xirouchakis, Stavros, Cecere, Jacopo G., Zamora-López, Antonio, Forero, Manuela G., Ouni, Ridha, Romdhane, Mohamed Salah, De Felipe, Fernanda, Zajková, Zuzana, Cruz-Flores, Marta, Grémillet, David, González-Solís, Jacob, and Ramos, Raül
- Abstract
Aim: 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), en-vironmental 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 vari-ability 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 popu-lation 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 deline-ation 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 h
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- 2023
5. Methods to detect spatial biases in tracking studies caused by differential representativeness of individuals, populations and time
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Morera‐Pujol, Virginia, primary, Catry, Paulo, additional, Magalhães, Maria, additional, Péron, Clara, additional, Reyes‐González, José Manuel, additional, Granadeiro, José Pedro, additional, Militão, Teresa, additional, Dias, Maria P., additional, Oro, Daniel, additional, Dell'Omo, Giacomo, additional, Müller, Martina, additional, Paiva, Vitor H., additional, Metzger, Benjamin, additional, Neves, Verónica, additional, Navarro, Joan, additional, Karris, Georgios, additional, Xirouchakis, Stavros, additional, Cecere, Jacopo G., additional, Zamora‐López, Antonio, additional, Forero, Manuela G., additional, Ouni, Ridha, additional, Romdhane, Mohamed Salah, additional, De Felipe, Fernanda, additional, Zajková, Zuzana, additional, Cruz‐Flores, Marta, additional, Grémillet, David, additional, González‐Solís, Jacob, additional, and Ramos, Raül, additional
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- 2022
- Full Text
- View/download PDF
6. Cory’s, Scopoli’s, and Cabo Verde shearwaters non-breeding locations [Dataset]
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Ramos, Raül [ramos@ub.edu], Morera-Pujol, Virginia, Catry, Paulo, Magalhães, Maria, Perón, Clara, Reyes-González, José M., Granadeiro, José Pedro, Militão, Teresa, Dias, Maria P., Oro, Daniel, Dell'Omo, Giacomo, Müller, Martina, Paiva, Vitor H., Metzger, Benjamin, Neves, Verónica, Navarro, Joan, Karris, Georgios, Xirouchakis, Stavros, Cecere, Jacopo G., Zamora-López, Antonio, Forero, Manuela G., Ouni, Ridha, Romdhane, Mohamed Salah, De Felipe, Fernanda, Zajková, Zuzana, Cruz-Flores, Marta, Grémillet, David, González-Solís, Jacob, Ramos, Raül, Ramos, Raül [ramos@ub.edu], Morera-Pujol, Virginia, Catry, Paulo, Magalhães, Maria, Perón, Clara, Reyes-González, José M., Granadeiro, José Pedro, Militão, Teresa, Dias, Maria P., Oro, Daniel, Dell'Omo, Giacomo, Müller, Martina, Paiva, Vitor H., Metzger, Benjamin, Neves, Verónica, Navarro, Joan, Karris, Georgios, Xirouchakis, Stavros, Cecere, Jacopo G., Zamora-López, Antonio, Forero, Manuela G., Ouni, Ridha, Romdhane, Mohamed Salah, De Felipe, Fernanda, Zajková, Zuzana, Cruz-Flores, Marta, Grémillet, David, González-Solís, Jacob, and Ramos, Raül
- Abstract
on-breeding locations of Cory’s shearwaters (Calonectris borealis), Scopoli’s shearwaters (C. diomedea), and Cabo Verde shearwaters (C. edwardsii) tracked from the colonies of Berlenga, Chafarinas, Corvo, Faial, Graciosa, Montaña Clara, Pico, Selvagem, Sisargas, Terreros, Timanfaya, Veneguera, and Vila for Cory’s shearwaters; Cala Morell, Chafarinas, Filfla, Frioul, Giraglia, Gozo, Lavezzi, Linosa, Malta, Na Foradada, Na Pobra, Palomas, Pantaleu, Paximada, Porquerolles, Riou, Strofades, Tremiti, and Zembra for Scopoli’s shearwaters; and Curral Velho and Raso for Cabo Verde’s shearwaters. Animals were tracked between the years of 2006 and 2016, and data includes species, colony, unique identifiers for each bird and trip, latitude, longitude, year of tracking (1st year, 2nd year, etc.), and an ordering column that allows the positions to be ordered to form a track.
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- 2022
7. Double‐tagging scores of seabirds reveals that light‐level geolocator accuracy is limited by species idiosyncrasies and equatorial solar profiles
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Halpin, Luke R., primary, Ross, Jeremy D., additional, Ramos, Raül, additional, Mott, Rowan, additional, Carlile, Nicholas, additional, Golding, Nick, additional, Reyes‐González, José Manuel, additional, Militão, Teresa, additional, De Felipe, Fernanda, additional, Zajková, Zuzana, additional, Cruz‐Flores, Marta, additional, Saldanha, Sarah, additional, Morera‐Pujol, Virginia, additional, Navarro‐Herrero, Leia, additional, Zango, Laura, additional, González‐Solís, Jacob, additional, and Clarke, Rohan H., additional
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- 2021
- Full Text
- View/download PDF
8. Global political responsibility for the conservation of albatrosses and large petrels
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Beal, Martin, Dias, Maria P., Phillips, Richard A., Oppel, Steffen, Hazin, Carolina, Pearmain, Elizabeth J., Adams, Josh, Anderson, David J., Antolos, Michelle, Arata, Javier A., 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, Cruz-flores, Marta, 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, José Pedro, Hedd, April, Hodum, Peter, Igual, José Manuel, Jaeger, Audrey, Landers, Todd J., Le Corre, Mathieu, Makhado, Azwianewi, Metzger, Benjamin, Militão, Teresa, Montevecchi, William A., Morera-pujol, Virginia, Navarro-herrero, Leia, 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, R. Paul, Shaffer, Scott A., 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, Paulo, Beal, Martin, Dias, Maria P., Phillips, Richard A., Oppel, Steffen, Hazin, Carolina, Pearmain, Elizabeth J., Adams, Josh, Anderson, David J., Antolos, Michelle, Arata, Javier A., 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, Cruz-flores, Marta, 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, José Pedro, Hedd, April, Hodum, Peter, Igual, José Manuel, Jaeger, Audrey, Landers, Todd J., Le Corre, Mathieu, Makhado, Azwianewi, Metzger, Benjamin, Militão, Teresa, Montevecchi, William A., Morera-pujol, Virginia, Navarro-herrero, Leia, 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, R. Paul, Shaffer, Scott A., 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, and Catry, Paulo
- Abstract
Migratory 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.
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- 2021
- Full Text
- View/download PDF
9. Sexual segregation in the foraging behaviour of a slightly dimorphic seabird: Influence of the environment and fishery activity
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Reyes-González, José Manuel, De Felipe, Fernanda, Morera-Pujol, Virginia, Soriano-Redondo, Andrea, Navarro-Herrero, Leia, Zango, Laura, García-Barcelona, Salvador, Ramos, Raúl, González-Solís, Jacob, Reyes-González, José Manuel, De Felipe, Fernanda, Morera-Pujol, Virginia, Soriano-Redondo, Andrea, Navarro-Herrero, Leia, Zango, Laura, García-Barcelona, Salvador, Ramos, Raúl, and González-Solís, Jacob
- Abstract
1. Sexual segregation in foraging strategies has been little studied in marine species with slight sexual size dimorphism (SSD), particularly regarding the role of environmental conditions and fishery activities. Sexual differences in fishery attendance are of particular concern because uneven mortality associated with bycatch may exacerbate impacts in wildlife populations. 2. Using a seabird species with slight SSD, the Scopoli's shearwater Calonectris diomedea, we assessed sexual differences in foraging strategies and evaluated whether annual environmental conditions and fishery activity shaped such differences. 3. We used a 4-year dataset combining bird GPS tracking, stable isotope analysis, the North Atlantic Oscillation index (NAO, as main proxy of the annual environmental conditions), and fishing vessel positioning data (Vessel Monitoring System, VMS) from the North Western Mediterranean, a region under intense fishery pressure. 4. From 2012 to 2015, we tracked 635 foraging trips from 78 individuals. Females showed a greater foraging effort, a lower fishery attendance, a lower trophic level, and a narrower isotopic niche width than males. Moreover, in years with unfavourable environmental conditions, both sexes showed a lower fishery attendance and increased foraging effort compared to the year with most favourable conditions. 5. Our results revealed that environmental conditions influence space use, feeding resources and fishery attendance differently in males and females, overall suggesting competitive exclusion of females by males from main foraging areas and feeding resources, particularly in unfavourable environmental conditions. We highlight the importance of evaluating sexual segregation under disparate environmental conditions, particularly in species with slight SSD, since segregation may pass otherwise unnoticed if only years with similar environmental conditions are considered. The higher fishery attendance of males likely explains the malebiased by
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- 2021
10. Global political responsibility for the conservation of albatrosses and large petrels
- Author
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European Commission, National Science Foundation (US), Universidad de Barcelona, Ministerio de Educación y Ciencia (España), Ministerio de Ciencia e Innovación (España), Ministerio de Economía y Competitividad (España), Generalitat de Catalunya, Beal, Martin, Dias, Maria P., Phillips, Richard A., Oppel, Steffen, Hazin, Carolina, Pearmain, Elizabeth J., Adams, Josh, Anderson, David J., Antolos, Michelle, Arata, Javier A., 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, Cruz-Flores, Marta, 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, José Pedro, Hedd, April, Hodum, Peter, Igual, José Manuel, Jaeger, Audrey, Landers, Todd J., Le Corre, Matthieu, Makhado, Azwianewi, Metzger, Benjamin, Militão, Teresa, Montevecchi, William A., Morera-Pujol, Virginia, Navarro-Herrero, Leia, Nel, Deon, Nicholls, David, Oro, Daniel, Ouni, Ridha, Ozaki, Kiyoaki, Quintana, Flavio, Ramos, Raül, Reid, Tim, Reyes-González, José M., Robertson, Christopher, Robertson, Graham, Romdhane, Mohamed Salah, Ryan, Peter G., Sagar, Paul, Sato, Fumio, Schoombie, Stefan, Scofield, R. Paul, Shaffer, Scott A., 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 M., Waugh, Susan M., Weimerskirch, Henri, Yamamoto, Takashi, Zajková, Zuzana, Zango, Laura, Catry, Paulo, European Commission, National Science Foundation (US), Universidad de Barcelona, Ministerio de Educación y Ciencia (España), Ministerio de Ciencia e Innovación (España), Ministerio de Economía y Competitividad (España), Generalitat de Catalunya, Beal, Martin, Dias, Maria P., Phillips, Richard A., Oppel, Steffen, Hazin, Carolina, Pearmain, Elizabeth J., Adams, Josh, Anderson, David J., Antolos, Michelle, Arata, Javier A., 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, Cruz-Flores, Marta, 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, José Pedro, Hedd, April, Hodum, Peter, Igual, José Manuel, Jaeger, Audrey, Landers, Todd J., Le Corre, Matthieu, Makhado, Azwianewi, Metzger, Benjamin, Militão, Teresa, Montevecchi, William A., Morera-Pujol, Virginia, Navarro-Herrero, Leia, Nel, Deon, Nicholls, David, Oro, Daniel, Ouni, Ridha, Ozaki, Kiyoaki, Quintana, Flavio, Ramos, Raül, Reid, Tim, Reyes-González, José M., Robertson, Christopher, Robertson, Graham, Romdhane, Mohamed Salah, Ryan, Peter G., Sagar, Paul, Sato, Fumio, Schoombie, Stefan, Scofield, R. Paul, Shaffer, Scott A., 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 M., Waugh, Susan M., Weimerskirch, Henri, Yamamoto, Takashi, Zajková, Zuzana, Zango, Laura, and Catry, Paulo
- Abstract
Migratory 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.
- Published
- 2021
11. Sexual segregation in spatial and feeding ecology of seabirds
- Author
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Pereira de Felipe, Fernanda, González-Solís, Jacob, Ramos i Garcia, Raül, and Universitat de Barcelona. Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals
- Subjects
Birds ,Ocells ,Animal ecology ,Ecología animal ,Ecologia animal ,Birds migration ,Migració d'ocells ,Aves ,Migración de aves ,Ciències Experimentals i Matemàtiques - Abstract
[eng] Sexual Segregation (SS) is a phenomenon that occurs across a wide range of animal species, and that had been broadly categorized in spatial/habitat segregation and social segregation. SS of a given species is often related quantitatively to its Sexual Size Dimorphism (SSD), which frequently drives to sexual differences that can work as a mechanism to avoid competition between individuals of opposite sex. SS has been widely studied among terrestrial birds. The few existing studies on SS involving pelagic seabirds have focused on the breeding period, and the extent of SS in relation to environmental conditions and fisheries and its persistence during the non-breeding period remains poorly understood in this taxa. In this thesis, we aimed to understand the causes and consequences of SS in spatio-temporal distribution (inferred through geolocation and GPS-tracking data), migratory phenology (inferred through light-level data from geolocators), behaviour (inferred through immersion data from geolocators) and feeding ecology (inferred through Stable Isotope Analysis (SIA)) of three closely-related shearwaters: Scopoli’s, Cory’s and Cape Verde shearwaters (Calonectris diomedea, C. borealis, and C. edwardsii, respectively). To assess and understand potential sex differences within or between breeding (for Scopoli’s shearwater) and non-breeding periods (for the three Calonectris shearwaters), we adopted a multidisciplinary approach combining geolocation, immersion data, GPS-tracking, spatial modelling and SIA. Our findings pointed out that during the breeding period, females of Scopoli’s shearwater seem to be outcompeted by males and forced to increase their foraging effort, especially under unfavourable conditions. This result suggests unfavourable conditions induced an inter-sexual competition for limiting resources, and males forced females to forage further from the colony. Furthermore, males interacted with fishing vessels to a greater extent, profiting from discards more than females. Otherwise, during the non-breeding period, both sexes of the three Calonectris shearwaters shared the same non-breeding areas, suggesting competitive exclusion does not promote spatial segregation throughout the annual cycle. Sexual differences in the migratory phenology were subtle for the three species, with males consistently returning earlier to breeding colonies, and male Cory’s shearwaters remaining resident in a larger proportion than females, likely due to sex-specific reproductive roles at early stages of the breeding period. For both breeding and non-breeding periods, males consistently feed on higher trophic levels (inferred from higher δ15N) than females, suggesting that sexual differences in diet may persist year-round. For the breeding period, we found an increase of δ15N values correlated with fishing vessel attendance, indicating that sexual differences observed may mostly emerge from differential fishing vessel attendance and consumption of fishery discards between males and females. However, the influence of SSD in bill size in determining differences in diet remains unclear. Overall, we found consistent differences in foraging movements, migratory phenology, and resource use between sexes, indicating a robust SS during breeding and non-breeding periods in shearwater species. Furthermore, our results indicated that SS in foraging strategies of Scopoli’s shearwater may lead to unbalanced exposure of males and females to bycatch in the North-Western Mediterranean, which could reduce effective population size and compromise the population viability of the species. This thesis increase our knowledge about SS in Calonectris species, and show that species with slight SSD also present well-marked SS and that intrinsic and extrinsic factors can promote inter-sexual differences throughout the annual cycle. Furthermore, we highlight that SS in distribution and foraging behaviour of Scopoli’s shearwater, and probably in other seabird species, should be taken into consideration when implementing specific conservation plans in the marine environment., [spa] La segregación sexual (SS) es un fenómeno habitual en animales, como consecuencia de diferencias entre sexos en la distribución espacio-temporal, el comportamiento o la ecología trófica. En aves marinas, el estudio de la SS se ha centrado principalmente en el período reproductivo. En cambio, su alcance e implicaciones en relación a las condiciones ambientales, así como su ocurrencia fuera del período reproductivo, han sido menos estudiadas. Nuestro objetivo fue comprender las causas y consecuencias de la SS en la distribución, fenología migratoria, comportamiento y ecología trófica de tres especies emparentadas: la pardela cenicienta mediterránea, cenicienta atlántica y de Cabo Verde (Calonectris diomedea, C. borealis y C. edwardsii, respectivamente). Para ello evaluamos las diferencias sexuales en el periodo reproductivo (en la pardela cenicienta mediterránea) y de invernada, y discutimos si dichas diferencias se extienden a lo largo del ciclo anual. Para el periodo reproductivo, nuestros resultados indicaron que las hembras de pardela cenicienta mediterránea son menos competitivas que los machos, viéndose obligadas a incrementar el esfuerzo de búsqueda de alimento, especialmente ante condiciones ambientales desfavorables. Además, los machos fueron más proclives a interaccionar con barcos pesqueros, haciendo mayor uso de descartes, pero exponiéndose a un mayor riesgo de captura accidental, lo que podría comprometer el tamaño efectivo de la población y su viabilidad en el Mediterráneo noroccidental. Fuera del periodo reproductivo, ambos sexos compartieron las zonas de invernada en las tres especies, indicando que la exclusión competitiva no causa, al menos a escala espacial, SS a lo largo del año. Ambos sexos se alimentaron en diferentes niveles tróficos, sugiriendo que la segregación trófica persiste a lo largo del año. Encontramos sutiles diferencias en el calendario migratorio, siendo los machos los primeros en retornar a las colonias, y un mayor porcentaje de machos que de hembras de la pardela cenicienta atlántica no migró, probablemente como estrategia ventajosa de cara a las etapas iniciales del periodo reproductivo. En general, encontramos evidencias de SS en los movimientos de búsqueda de alimento, fenología migratoria y ecología trófica, tanto durante el período reproductivo como en el período de invernada en las tres especies de pardela.
- Published
- 2020
12. Global political responsibility for the conservation of albatrosses and large petrels
- Author
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Beal, Martin, primary, Dias, Maria P., additional, Phillips, Richard A., additional, Oppel, Steffen, additional, Hazin, Carolina, additional, Pearmain, Elizabeth J., additional, Adams, Josh, additional, Anderson, David J., additional, Antolos, Michelle, additional, Arata, Javier A., additional, Arcos, José Manuel, additional, Arnould, John P. Y., additional, Awkerman, Jill, additional, Bell, Elizabeth, additional, Bell, Mike, additional, Carey, Mark, additional, Carle, Ryan, additional, Clay, Thomas A., additional, Cleeland, Jaimie, additional, Colodro, Valentina, additional, Conners, Melinda, additional, Cruz-Flores, Marta, additional, Cuthbert, Richard, additional, Delord, Karine, additional, Deppe, Lorna, additional, Dilley, Ben J., additional, Dinis, Herculano, additional, Elliott, Graeme, additional, De Felipe, Fernanda, additional, Felis, Jonathan, additional, Forero, Manuela G., additional, Freeman, Amanda, additional, Fukuda, Akira, additional, González-Solís, Jacob, additional, Granadeiro, José Pedro, additional, Hedd, April, additional, Hodum, Peter, additional, Igual, José Manuel, additional, Jaeger, Audrey, additional, Landers, Todd J., additional, Le Corre, Matthieu, additional, Makhado, Azwianewi, additional, Metzger, Benjamin, additional, Militão, Teresa, additional, Montevecchi, William A., additional, Morera-Pujol, Virginia, additional, Navarro-Herrero, Leia, additional, Nel, Deon, additional, Nicholls, David, additional, Oro, Daniel, additional, Ouni, Ridha, additional, Ozaki, Kiyoaki, additional, Quintana, Flavio, additional, Ramos, Raül, additional, Reid, Tim, additional, Reyes-González, José Manuel, additional, Robertson, Christopher, additional, Robertson, Graham, additional, Romdhane, Mohamed Salah, additional, Ryan, Peter G., additional, Sagar, Paul, additional, Sato, Fumio, additional, Schoombie, Stefan, additional, Scofield, R. Paul, additional, Shaffer, Scott A., additional, Shah, Nirmal Jivan, additional, Stevens, Kim L., additional, Surman, Christopher, additional, Suryan, Robert M., additional, Takahashi, Akinori, additional, Tatayah, Vikash, additional, Taylor, Graeme, additional, Thompson, David R., additional, Torres, Leigh, additional, Walker, Kath, additional, Wanless, Ross, additional, Waugh, Susan M., additional, Weimerskirch, Henri, additional, Yamamoto, Takashi, additional, Zajkova, Zuzana, additional, Zango, Laura, additional, and Catry, Paulo, additional
- Published
- 2021
- Full Text
- View/download PDF
13. Sexual segregation in the foraging behaviour of a slightly dimorphic seabird: Influence of the environment and fishery activity
- Author
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Reyes‐González, José Manuel, primary, De Felipe, Fernanda, additional, Morera‐Pujol, Virginia, additional, Soriano‐Redondo, Andrea, additional, Navarro‐Herrero, Leia, additional, Zango, Laura, additional, García‐Barcelona, Salvador, additional, Ramos, Raül, additional, and González‐Solís, Jacob, additional
- Published
- 2021
- Full Text
- View/download PDF
14. Does sexual segregation occur during the nonbreeding period? A comparative analysis in spatial and feeding ecology of threeCalonectrisshearwaters
- Author
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De Felipe, Fernanda, primary, Reyes‐González, José M., additional, Militão, Teresa, additional, Neves, Verónica C., additional, Bried, Joël, additional, Oro, Daniel, additional, Ramos, Raül, additional, and González‐Solís, Jacob, additional
- Published
- 2019
- Full Text
- View/download PDF
15. Migración y ecología espacial de las poblaciones españolas de pardela cenicienta
- Author
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Reyes-González, José Manuel, primary, Zajková, Zuzana, additional, Morera-Pujol, Virginia, additional, de Felipe, Fernanda, additional, Militão, Teresa, additional, Dell’Ariccia, Gaia, additional, Ramos, Raül, additional, Igual, José Manuel, additional, Arcos, José Manuel, additional, and González-Solís, Jacob, additional
- Published
- 2017
- Full Text
- View/download PDF
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