13 documents found, page 1 of 2
Exposure of an endangered seabird species to persistent organic pollutants: Ass...
Campioni, Letizia; Oró-Nolla, Bernat; Granadeiro, José P.; Silva, Monica C.; Madeiros, Jeremy; Gjerdrum, Carina; Lacorte, SilviaOcean contamination, particularly from persistent organic pollutants (POPs), remains a significant threat to marine predators that occupy high trophic positions. Long-lived procellariform seabirds are apex predators in marine ecosystems and tend to accumulate contaminants. Prolonged exposure to pollutants negatively affects their fitness including reproductive success. Low breeding success may represent a hurdl...
Oceanic seabirds chase tropical cyclones
Ventura, Francesco; Sander, Neele; Catry, Paulo; Wakefield, Ewan; De Pascalis, Federico; Richardson, Philip L; Granadeiro, José P.; Silva, Monica C.In late summer and autumn, the passage of intense tropical cyclones can profoundly perturb oceanic and coastal ecosystems. Direct negative effects on individuals and marine communities can be dramatic, especially in the coastal zone,1–4 but cyclones can also enhance pelagic primary and secondary production.5–9 However, cyclone impacts on open ocean marine life remain poorly understood. Here, we investigate thei...
Allochrony is shaped by foraging niche segregation rather than adaptation to th...
Ventura, Francesco; Granadeiro, José P.; Catry, Paulo; Gjerdrum, Carina; De Pascalis, Federico; Viveiros, Filipe; Silva, Isamberto; Menezes, DiliaEcological segregation allows populations to reduce competition and coexist in sympatry. Using as model organisms two closely related gadfly petrels endemic to the Madeira archipelago and breeding with a two month allochrony, we investigated how movement and foraging preferences shape ecological segregation in sympatric species. We tested the hypothesis that the breeding allochrony is underpinned by foraging ni...
Exposure of an endangered seabird species to persistent organic pollutants: Ass...
Campioni, Letizia; Oró-Nolla, Bernat; Granadeiro, José P.; Silva, Monica C.; Madeiros, Jeremy; Gjerdrum, Carina; Lacorte, SilviaOcean contamination, particularly from persistent organic pollutants (POPs), remains a significant threat to marine predators that occupy high trophic positions. Long-lived procellariform seabirds are apex predators in marine ecosystems and tend to accumulate contaminants. Prolonged exposure to pollutants negatively affects their fitness including reproductive success. Low breeding success may represent a hurdl...
Diet of non-breeding leach’s storm-petrels (Hydrobates leucorhous) in the sub-p...
Silva, Monica C.; Catry, Paulo; Newton, Jason; Nunes, Vera L.; Wakefield, Ewan D.n order to understand the drivers of the distribution and abundance of pelagic seabirds it is necessary to know what they eat, yet there remains little detailed, geo-referenced information on the diets of pelagic seabird. In particular, due to sampling difficulties, information is lacking for non-breeding stages, smaller species, such as storm-petrels, and remote oceanic areas, which may include important diver...
Oceanic seabirds chase tropical cyclones
Ventura, Francesco; Sander, Neele; Catry, Paulo; Wakefield, Ewan; De Pascalis, Federico; Richardson, Philip L.; Granadeiro, José P.; Silva, Monica C.In late summer and autumn, the passage of intense tropical cyclones can profoundly perturb oceanic and coastal ecosystems. Direct negative effects on individuals and marine communities can be dramatic, especially in the coastal zone,1,2,3,4 but cyclones can also enhance pelagic primary and secondary production.5,6,7,8,9 However, cyclone impacts on open ocean marine life remain poorly understood. Here, we invest...
No evidence of inbreeding depression despite a historical severe bottleneck in ...
Afonso, Rita O.; Pina-Martins; Friesen, Vicki; SUN, ZHENGXIN; Letizia, Campioni; Madeiros, Jeremy; Silva, Monica C.The Bermuda petrel Pterodroma cahow is an island endemic seabird that belongs to the Procellariiformes, one of the most endangered orders of birds. Historical records suggest a significant population size decline following human settlement in Bermuda, bringing the species to near extinction. Since the 1950s, the population has been recovering aided by the implementation of an ongoing conservation plan. However,...
Global assessment of marine plastic exposure risk for oceanic birds
Clark, Bethany L.; Carneiro, Ana P. B.; Pearmain, Elizabeth J.; Rouyer, Marie-Morgane; Clay, Thomas A.; Cowger, Win; Phillips, Richard A.Plastic pollution is distributed patchily around the world’s oceans. Likewise, marine organisms that are vulnerable to plastic ingestion or entanglement have uneven distributions. Understanding where wildlife encounters plastic is crucial for targeting research and mitigation. Oceanic seabirds, particularly petrels, frequently ingest plastic, are highly threatened, and cover vast distances during foraging and m...
Combining bio-logging, stable isotopes and DNA metabarcoding to reveal the fora...
Campioni, L; Ventura, F; Granadeiro, J.P.; Madeiros, J; Gjerdrum, C; Silva, Monica C.The foraging range of central-place predators is limited by spatiotemporal and energetic constraints. Gadfly petrels Pterodroma spp. are seabirds well adapted to travel vast distances in oceans with sustained wind conditions, although our understanding of their foraging ecology in these heterogeneous and highly dynamic environments is still limited. We studied the foraging behaviour, habitat use, ecological nic...
Contrasting patterns of population structure of Bulwer’s petrel (Bulweria bulwe...
Silva, Monica C.; Catry, Paulo; Bried, Joël; Kawakami, Kazuto; Flint, Elizabeth; Granadeiro, José P.The patterns of population divergence of mid-latitude marine birds are impacted by only a few biogeographic barriers to dispersal and the effect of intrinsic factors, such as fidelity to natal colonies or wintering grounds, may become more conspicuous. Here we describe, for the first time, the phylogeographic patterns and historical demography of Bulwer’s petrel Bulweria bulwerii and provide new insights regard...