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Les articles de Lina Lopez-RicaurteLocal climate at breeding colonies influences pre-breeding arrival in a long-distance migrant
de Lina Lopez-Ricaurte, Jesus Hernandez-Pliego, Daniel García-Silveira, Ana Bermejo-Bermejo, Susana Casado, Jacopo G. Cecere, Javier de la Puente, Fernando Garcés-Toledano, Juan Martínez-Dalmau, Michelangelo Morganti, et al.
In Journal of Ornithology, 166(1) (January, 2025)
En ligne : doi.org[...]
The annual cycles of long-distance migrant species are synchronized with the local climatic conditions at their breeding areas, as they impact the availability of food resources. A timely arrival of individuals to the breeding grounds is crucial for achieving high fitness. Variation in factors influencing timing, including climate, may thus impact the life history of individuals. We studied between-individual variation in migration timing, in particular how local breeding climate influences arrival time and how early-arriving individuals achieve a timely arrival. We tracked individual Lesser Kestrel (Falco naumanni) with GPS tags across a gradient of latitude (37°–42° N) and longitude (6.5° W–16.5° E). Arrival time was influenced by the breeding latitude, the breeding longitude, and the local temperature, without any apparent influence of sex. The time of arrival at the breeding grounds was 6 days later for every degree increase in latitude and 2 days later for every degree increase in longitude. Lesser Kestrels from southwestern colonies achieve earlier arrival than conspecifics breeding at northeastern colonies, mostly due to earlier departure from their non-breeding grounds. While we found some effects of travel speed and stopover duration on arrival date, the latter was primarily influenced by food abundance and wind conditions en route. The large effect of departure date from West Africa on arrival date, relative to the more moderate influence of stopover duration close to breeding colonies, supports the idea that geographically uneven climate change may negatively affect fitness via ecological mismatches in the breeding area.Lesser kestrels of the same colony do not overwinter together
de Jorge García-Macía, Munir Chaouni, Sara Morollón, Javier Bustamante, Lina Lopez-Ricaurte, Juan Martínez-Dalmau, Beatriz Rodríguez-Moreno, Vicente Urios
In Current Zoology, 70(4) (August, 2024), 505-512
En ligne : doi.org[...]
Migratory connectivity describes the linkage between breeding and nonbreeding sites, having major ecological implications in birds: 1 season influence the success of an individual or a population in the following season. Most studies on migratory connectivity have used large-scale approaches, often considering regional populations, but fine-scale studies are also necessary to understand colony connectivity. The lesser kestrel Falco naumanni, an insectivorous migratory raptor which form colonies during the breeding period, was considered to have strong connectivity based on regional populations. However, no small-scale studies on migratory connectivity have been conducted. Therefore, we GPS (Global Positioning System)-tracked 40 adult lesser kestrels from 15 different Spanish breeding colonies, estimating the overlap index between home ranges and the distance between their centroids. It was found that lesser kestrels from the same breeding colony placed their nonbreeding areas at 347 ± 281 km (mean ± standard deviation) away from each other (range = 23–990), and their home ranges overlapped by 38.4 ± 23.6%. No differences between intra-colony and inter-colony metrics were found, which suggests that lesser kestrels from the same breeding cluster do not overwinter together, but they spread out and mixed independently of the colony belonging throughout the nonbreeding range of the species. Ultimately, this study highlights the importance of performing connectivity studies using fine-scale approaches.
de Giacomo Assandri, Gaia Bazzi, Ana Bermejo-Bermejo, Anastasios Bounas, Enrico Calvario, Carlo Catoni, Ines Catry, Teresa Catry, Jocelyn Champagnon, Federico De Pascalis, et al.
In Biological Conservation, 293 (May, 2024), 110592
En ligne : www.sciencedirect.com[...]
Unsustainable fossil fuel emissions have prompted a global shift towards renewable energy sources, such as wind. This has led to a strong expansion of wind power generation infrastructures, often conflicting with biodiversity conservation. Relatively large flying animals, such as birds and bats, have frequently been reported to collide with wind turbines, resulting in casualties that can depress population size and lead to local extinctions. Migratory species that move across continents through their year-round displacements may be especially at risk. We comprehensively assessed wind turbine exposure for a colonial migratory raptor of European conservation interest, the lesser kestrel Falco naumanni, based on the distribution and size of >1800 colonies and a large GPS-tracking dataset (>350 individuals) for three distinct biogeographical populations (from Iberian, Italian, and Balkan peninsulas). 26 % of the European population has at least one wind turbine within the foraging areas around colony sites, Italian colonies being most at risk. The main European network of protected areas, the Natura 2000 network, failed to mitigate the potential negative impact of wind turbines on breeding populations. GPS-tracking revealed that exposure was negligible in the African non-breeding areas (Sahel region), particularly high during migration, and lower during breeding for Iberian and Balkan individuals but not for Italian ones. Different countries should prioritize different measures to mitigate collision risk with wind power generation infrastructures. This case study can be leveraged by conservationists and renewable energy stakeholders to mitigate conflicts between biodiversity conservation and expected wind energy infrastructure development in the near future.Itinerant lifestyle and congregation of lesser kestrels in West Africa
de Lina Lopez-Ricaurte, Wouter M. G. Vansteelant, Jesus Hernandez-Pliego, Daniel García-Silveira, Susana Casado, Fernando Garcés-Toledano, Juan Martínez-Dalmau, Alfredo Ortega, Beatriz Rodríguez-Moreno, Javier Bustamante
In Journal of Avian Biology, Online November (November, 2023), e03063
En ligne : onlinelibrary.wiley.com[...]
Trans-Saharan migrants often spend a large proportion of their annual cycle wintering in the Sahel. Advances in fieldwork and tracking technology have greatly enhanced our ability to study their ecol...
de Daniel García-Silveira, Lina Lopez-Ricaurte, Jesus Hernandez-Pliego, Javier Bustamante
In Journal of Raptor Research, 56(3) (August, 2022), 346-355
En ligne : bioone.org[...]
Los datos de anillamientos y recuperaciones a nivel europeo reflejan un gradiente en el comportamiento migratorio de Falco tinnunculus, desde poblaciones estrictamente migratorias en el norte y centro de Europa hasta poblaciones residentes en el sur y este del continente, con poblaciones parcialmente migratorias en zonas intermedias. En la mitad meridional de la Península Ibérica la especie está descrita como residente. Gracias al uso de emisores GPS solares de alta resolución colocados en 17 individuos de F. tinnunculus (siete machos y 10 hembras) en dos áreas del suroeste de España, documentamos cuatro desplazamientos de larga distancia realizados entre 2018 y 2019. Tres hembras realizaron estos movimientos durante la época no reproductiva, pero no hubo relación entre estos movimientos y el sexo de los individuos marcados. Detectamos un alto grado de variación individual en la duración, dirección, distancia y temporalidad de los movimientos. Nuestros resultados sugieren que F. tinnunculus es un migrador parcial en el suroeste peninsular. La variación observada en los patrones de movimiento se asemeja a la documentada en los migrantes dispersivos. Este estudio es el primero en describir movimientos estacionales en F. tinnunculus mediante datos espaciales de alta resolución. [Traducción de los autores editada]Barrier crossings and winds shape daily travel schedules and speeds of a flight generalist
de Lina Lopez-Ricaurte, Wouter M. G. Vansteelant, Jesus Hernandez-Pliego, Daniel García-Silveira, Ana Bermejo-Bermejo, Susana Casado, Jacopo G. Cecere, Javier de la Puente, Fernando Garcés-Toledano, Juan Martínez-Dalmau, et al.
In Scientific Reports, 11(1) (January, 2021), 12044
En ligne : www.nature.com[...]
External factors such as geography and weather strongly affect bird migration influencing daily travel schedules and flight speeds. For strictly thermal-soaring migrants, weather explains most seasonal and regional differences in speed. Flight generalists, which alternate between soaring and flapping flight, are expected to be less dependent on weather, and daily travel schedules are likely to be strongly influenced by geography and internal factors such as sex. We GPS-tracked the migration of 70 lesser kestrels (Falco naumanni) to estimate the relative importance of external factors (wind, geography), internal factors (sex) and season, and the extent to which they explain variation in travel speed, distance, and duration. Our results show that geography and tailwind are important factors in explaining variation in daily travel schedules and speeds. We found that wind explained most of the seasonal differences in travel speed. In both seasons, lesser kestrels sprinted across ecological barriers and frequently migrated during the day and night. Conversely, they travelled at a slower pace and mainly during the day over non-barriers. Our results highlighted that external factors far outweighed internal factors and season in explaining variation in migratory behaviour of a flight generalist, despite its ability to switch between flight modes.Broad-front migration leads to strong migratory connectivity in the lesser kestrel (Falco naumanni)
de Maurizio Sara, Salvatore Bondi, Ana Bermejo, Mathieu Bourgeois, Mathias Bouzin, Javier Bustamante, Javier de la Puente, Angelos Evangelidis, Annagrazia Frassanito, Egidio Fulco, et al.
In Journal of Biogeography, (Online version) (October, 2019), NIL_1-NIL_15
En ligne : www.webofscience.com[...]
Aim Migratory animals regularly move between often distant breeding and non-breeding ranges. Knowledge about how these ranges are linked by movements of individuals from different populations is crucial for unravelling temporal variability in population spatial structuring and for identifying environmental drivers of population dynamics acting at different spatio-temporal scales. We performed a large-scale individual-based migration tracking study of an Afro-Palaearctic migratory raptor, to determine the patterns of migratory connectivity of European breeding populations. Location Europe, Africa. Methods Migration data were recorded using different devices (geolocators, satellite transmitters, Global Positioning System dataloggers) from 87 individuals breeding in the three core European populations, located in the Iberian, Italian and Balkan peninsulas. We estimated connectivity by the Mantel correlation coefficient (r(M)), and computed both the degree of separation between the non-breeding areas of individuals from the same population (i.e. the population spread) and the relative size of the non-breeding range (i.e. the non-breeding range spread). Results European lesser kestrels migrated on a broad front across the Mediterranean Sea and Sahara Desert, with different populations using different routes. Iberian birds migrated to western Sahel (Senegal, Mauritania, western Mali), Balkan birds migrated chiefly to central-eastern Sahel (Niger, Nigeria, Chad), whereas Italian ones spread from eastern Mali to Nigeria. Spatial differentiation of non-breeding areas led to a strong migratory connectivity (r(M) = .58), associated with a relatively high population (637 km) and non-breeding range (1,149 km) spread. Main conclusions Our comprehensive analysis of the non-breeding distribution of European lesser kestrel populations revealed a strong migratory connectivity, a rare occurrence in long-distance avian migrants. The geographical conformation of the species' breeding and non-breeding ranges, together with broad-front migration across ecological barriers, promoted the differentiation of migratory routes and non-breeding areas. Strong connectivity could then arise because of both high population spread and broad non-breeding range.
de Thomas Blanchon, Jocelyn Champagnon, Yves Kayser, Lina Lopez-Ricaurte, Paul Isenmann
In Alauda, 85(3) (oct 2017), 231-233Impacts of oil palm expansion on avian biodiversity in a Neotropical natural savanna
de Lina Lopez-Ricaurte, David P. Edwards, Nabhi Romero-Rodríguez, James J. Gilroy
In Biological Conservation, 213 (September, 2017), 225-233
En ligne : www.sciencedirect.com[...]
The consequences of converting tropical rainforest to oil palm are well-documented, but the impacts of oil palm conversion on natural savanna landscapes remain little-known. Natural savannas in South America have been identified as fertile grounds for future oil palm expansion, partly due to perceived low biodiversity impacts relative to forest systems. We quantify the impacts of oil palm conversion for bird communities inhabiting natural savannas in the Colombian Llanos. Bird species richness and abundance were significantly reduced at sampling points in oil palm relative to adjacent natural savannas, with marked concomitant shifts in community composition. Aquatic, forest and grassland specialists all showed significantly lower abundances in oil palm habitat relative to savanna, as did migratory species and carnivorous/insectivorous dietary guilds. In both habitats, point-level species richness and total bird abundance increased with proximity to remnant forest patches. Within savanna, total bird abundance also decreased with proximity to adjacent oil palm, though species richness was not significantly affected. Within oil palm, point-level abundance increased with proximity to savanna, suggesting that communities in both habitats may be impacted by reciprocal edge or spill-over effects. Point-level abundance in oil palm also increased significantly with the presence of an invasive vine ‘kudzu’, a species introduced in some plantations as a soil protection measure, although species richness was not affected. Our work underlines the need for careful monitoring of further large-scale agro-industrial conversion in the Llanos. In particular, we suggest greater efforts to direct oil palm expansion towards already degraded lands (e.g. improved grassland areas currently used for intensive cattle grazing) to ensure remaining natural savannas are spared.
