Maria I Laranjeiro

Experimental anthropogenic food restrictions drive short-term foraging and immuno-haematological changes in sympatric breeding gulls

Jorge M. Pereira, Jaime A. Ramos, Adriana Domingues, Ana Almeida et autres

Fishery discards and landfills provide major subsidies to scavenging seabirds, shaping their foraging behaviour and population dynamics. However, few studies have compared the behaviour and health of individuals with and without access to such predictable anthropogenic food subsidies (PAFS). We assessed the …

pt, au, Kenya, fr, es (code pays fourni par la source)

Spatial and interspecific differences of trace element concentrations in the feathers of pelagic and coastal seabirds from the Northeast Atlantic Ocean and the Western Mediterranean Sea

Maria I Laranjeiro, Joan Navarro, Albert Bertolero, Lara R Cerveira et autres

Coastal ecosystems face increasing contamination threats due to urbanisation and consequent human pressure worldwide. This study assessed exposure to 15 trace elements (Al, Cd, Co, Cr, Cu, Fe, Hg, Mn, Ni, Pb, Se, Sr, Ti, V, Zn) across the Northeast Atlantic and …

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Seabirds as bioindicators of environmental health in the Northeast Atlantic and western Mediterranean

Maria I Laranjeiro

Memoria de tesis doctoral presentada por Maria Inês Laranjeiro Gouveia Santos para obtener el título de Doctora en Biociências, especialização em Ecologia por la Universidade de Coimbra (UC), realizada bajo la dirección del Dr. Filipe Rafael dos Santos Ceia y la Dra. …

The role of seabird foraging strategies on the uptake of mercury: A case study using gulls and shearwaters from the Portuguese coast

Ivo dos Santos, Jaime A. Ramos, Filipe R. Ceia, Joana Pais de Faria et autres

Mercury (Hg) is a non-essential element that bioaccumulates and biomagnifies in food webs through site-specific biogeochemical processes. Seabirds are valuable bioindicators of Hg contamination, yet certain regions, like the Portuguese coast, remain underrepresented. This study measured Hg concentrations in the blood of …

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Calonectris shearwaters reveal a gradient of mercury contamination along the Atlantic and Mediterranean waters of the Iberian Peninsula

Maria I Laranjeiro, José Seco, Ivo dos Santos, Albert Bertolero et autres

This study examines blood mercury (Hg) concentrations in Calonectris spp. shearwaters from three colonies along the Atlantic and Mediterranean waters of the Iberian Peninsula (southwestern Europe), investigating their relationship with foraging ecology through GPS tracking and stable isotopes ( δ 15 N …

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Foraging in contrasting oceanographic regions impacts the fatty acid profile of two closely related pelagic seabirds

Maria I Laranjeiro, Tiago Simões, Jaime A. Ramos, Ivo dos Santos et autres

Coastal urbanisation negatively affects marine ecosystems through habitat degradation and pollution. Cory's (Calonectris borealis) and Scopoli's (C. diomedea) shearwaters are closely related species inhabiting the Northeast Atlantic Ocean and the Mediterranean Sea, respectively. This study assesses the fatty acid profile, with the …

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Assessing the impacts of trace element contamination on the physiology and health of seabirds breeding along the western and southern coasts of Portugal

Ivo dos Santos, Vítor H. Paiva, Ana Cláudia Norte, Carine Churlaud et autres

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Stable isotope data of a community of mid‑trophic level epipelagic species in the North Atlantic

Filipe R. Ceia, Yves Cherel, Andreia V Silva, Susana Garrido et autres

A total of 495 individuals from a guild of 14 species (fishes, squids and crustaceans) were sampled along the west and south Iberia (Portuguese coast) aboard a research vessel during 2014, 2016 and 2017. Two seasonal oceanographic surveys were conducted each year …

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Stable isotope data of a community of mid‑trophic level epipelagic species in the North Atlantic

Filipe R. Ceia, Yves Cherel, Andreia V Silva, Susana Garrido et autres

A total of 495 individuals from a guild of 14 species (fishes, squids and crustaceans) were sampled along the west and south Iberia (Portuguese coast) aboard a research vessel during 2014, 2016 and 2017. Two seasonal oceanographic surveys were conducted each year …

pt, fr (code pays fourni par la source)

Drivers of niche partitioning in a community of mid-trophic level epipelagic species in the North Atlantic

Filipe R. Ceia, Yves Cherel, Andreia V. Silva, Susana Garrido et autres

Abstract According to the principles of community ecology, sympatric species may suffer a selective pressure to decrease their niche overlap through mechanisms of niche partitioning. However, there is still a gap in knowledge of the main drivers influencing niche differentiation, particularly in …

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Seabirds as Indicators of Metal and Plastic Pollution

Catarina S. Lopes, Maria I Laranjeiro, Jennifer L. Lavers, Annett Finger et autres

As top predators, seabirds are highly sensitive to widespread plastic and metal pollution. These bioindicators interact with plastics and metals in many different ways which can lead to several deleterious effects, measurable through different techniques, and ultimately to death. Still, seabirds’ vulnerability …

Variation among species and populations in bill shape and size in three planktivorous petrels

Maria I Laranjeiro, Marc Farré, Richard A. Phillips, Petra Quillfeldt et autres

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