8 documents found, page 1 of 1
Fixed-plot monitoring as a tool to assess population trends of underground nest...
Catry, Paulo; Dias, Maria P.; Menezes, Dília; Oliveira, Paulo; Lopes, Daniel; Alho, Maria; Campioni, Letizia; Catry, Teresa; Gatt, Marie ClaireMedium to small petrels that mostly nest in burrows or crevices represent a large fraction of the world’s seabirds, yet their population trends are largely unknown. This lack of knowledge, which has implications for conservation planning, results mostly from methodological difficulties and from the approaches that have been used for their monitoring. Here, we present the surveying scheme created to monitor Cory...
Monitoring of mercury in the mesopelagic domain of the Pacific and Atlantic oce...
Furtado, Ricardo; Granadeiro, José Pedro; Gatt, Marie Claire; Rounds, Rachel; Horikoshi, Kazuo; Paiva, Vítor H.; Menezes, Dilia; Pereira, EduardaGlobal mercury pollution has markedly and consistently grown over the past 70 years (although with regional variations in trends) and is a source of major concern. Mercury contamination is particularly prevalent in biota of the mesopelagic layers of the open ocean, but these realms are little studied, and we lack a large scale picture of contamination in living organisms of this region. The Bulwer's petrel Bulw...
Sex‐specific telomere length and dynamics in relation to age and reproductive s...
Bauch, Christina; Gatt, Marie Claire; Granadeiro, José Pedro; Verhulst, Simon; Catry, PauloIndividuals in free-living animal populations generally differ substantially in reproductive success, lifespan and other fitness-related traits and the molecular mechanisms underlying this variation are poorly understood. Telomere length and dynamics are candidate traits explaining this variation, as long telomeres predict a higher survival probability and telomere loss has been shown to reflect experienced "li...
Generalist seabirds as biomonitors of ocean mercury: The importance of accurate...
Gatt, Marie Claire; Reis, Bianca; Granadeiro, José Pedro; Pereira, Eduarda; Catry, PauloMonitoring mercury concentration in the marine environment is pivotal due to the risks that mercury intake poses to the ecosystem and human health. It is therefore of interest to make reliable, comparative measurements over large geographic areas. Here, the utility of wide-ranging generalist seabirds as mercury biomonitors at an ocean basin scale was assessed, using the Cory's Shearwater as a model species. The...
Costs of reproduction and migration are paid in later return to the colony, not...
Gatt, Marie Claire; Versteegh, Maaike; Bauch, Christina; Tieleman, Irene; Granadeiro, José Pedro; Catry, PauloLife history theory suggests a trade-off between costly activities such as breeding and migration and somatic self-maintenance. However, how the short-term cost of parental effort is expressed in species with a slow pace-of-life is not well understood. Also, investigating carry-over effects of migration is most meaningful when comparing migratory strategies within the same population, but this has rarely been d...
Generalist seabirds as biomonitors of ocean mercury: the importance of accurate...
Gatt, Marie Claire; Reis, Bianca; Granadeiro, José Pedro; Pereira, Eduarda; Catry, PauloMonitoring mercury concentration in the marine environment is pivotal due to the risks that mercury intake poses to the ecosystem and human health. It is therefore of interest to make reliable, comparative measurements over large geographic areas. Here, the utility of wide-ranging generalist seabirds as mercury biomonitors at an ocean basin scale was assessed, using the Cory's Shearwater as a model species. The...
Invasive Argentine ants prey on Bulwer’s petrels nestlings on the desertas isla...
Boieiro, Mário; Catry, Paulo; Jardim, Carolina S.; Menezes, Dília; Silva, Isamberto; Coelho, Nádia; Oliveira, Paulo; Gatt, Marie ClaireInvasive ants have the potential to cause severe impacts on the structure and composition of native invertebrate communities and interfere with the natural processes of pollination and seed dispersal. Less frequently reported, direct and indirect impacts on vertebrates, namely birds, are also known to occur. The Argentine ant Linepithema humile is one of the worst invasive species worldwide, and is responsible ...
Brood-guarding behaviour in Bulwer's Petrel (Bulweria bulwerii)at two East Atla...
Pinto, Maria Gomes Ribeiro Teixeira; Catry, Teresa; Pedro, Patrícia I.; Gatt, Marie Claire; Dias, Maria P.We characterized the brood-guarding behaviour of the Bulwer’s Petrel Bulweria bulwerii at two Atlantic colonies. Our results suggest that predation avoidance might be a major factor driving broodguarding duration on this species.