21 documents found, page 1 of 3
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...
Rice fields play a complementary role within the landscape mosaic supporting st...
Paulino, João; Granadeiro, José Pedro; Matos, Paula; Catry, TeresaThis study aims to understand how the structure and functions of waterbird communities in rice fields compare to those in other habitats within an agricultural landscape encompassing five habitats: saltpans, lakes, intertidal areas, pastures and rice fields. Over 2 years, waterbird counts were conducted every 15 days in these habitats. Non-metric multidimensional scaling was used to compare the composition and ...
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; Manica, AndreaPlastic 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...
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...
Global changes in coastal wetlands of importance for non-breeding shorebirds
Santos, Carlos D.; Catry, Teresa; Dias, Maria P.; Granadeiro, José P.Shorebird declines are occurring worldwide but the causes are not fully understood. Recent literature suggests that the deterioration of habitat quality at their non-breeding areas, mostly located in temperate and tropical coastal wetlands, might be a major contributing factor. However, most studies carried out so far tend to be restricted to a few regions. Remote sensing can help correct such geographical bias...
Foraging movements and important sites for conservation of the West African Cre...
Correia, Edna; Beal, Martin; Gomes, Nélson; Diop, Ngoné; Wambar, Francisco; Dias, Maria P.; Hernandez-Rios, Alfonso; Catry, TeresaAssessing at-sea distributions and behaviour of seabirds to identify critical foraging sites and spatial overlap with potential threats is a major step for delineating conservation guidelines. The West African Crested Tern (Thalasseus albididorsalis) is the most abundant breeding tern in West Africa, nesting from Mauritania to Guinea. Its restricted breeding range and exclusive nesting at coastal low-lying area...
Antipredator benefits of heterospecific colonial breeding for a predominantly s...
Gameiro, João; Franco, Aldina M.A.; Catry, Teresa; M. Palmeirim, Jorge; Catry, InêsPredation risk profoundly shapes how animals behave and is one of the main forces driving the formation or maintenance of groups. For some species, group living may be facultative, and individuals may live solitarily or aggregate with conspecifics or heterospecifics, but the advantages of each strategy are still poorly known. Here, we investigated whether a predominantly solitary breeding species, the European ...
High trophic niche overlap in mixed‐species colonies using artificial nests
Gameiro, João; Catry, Teresa; Marcelino, Joana; Franco, Aldina M.A.; M. Palmeirim, Jorge; Catry, InêsAlthough successful at recovering endangered populations, conservation actions based on nest provisioning seldom consider how they shape the composition of communities and alter interspecific interactions. Specifically, the extent to which dietary overlap within these communities may affect the conservation of target species has rarely been assessed. In Southern Europe, sites of large-scale nest-site provisioni...
Long-term persistence of conservation-reliant species: Challenges and opportuni...
Gameiro, João; Franco, Aldina M.A.; Catry, Teresa; Palmeirim, Jorge; Catry, Inês“Conservation-reliant species” – those fully dependent on continued management actions – are booming and, with limited conservation budgets, securing funds to sustain their long-term viability is becoming overwhelming. This study assesses the degree of dependence on conservation actions of two obligatory cavity-nesters, the Lesser Kestrel Falco naumanni and the European Roller Coracias garrulus, whose populatio...
Evidence for contrasting accumulation pattern of cadmium in relation to other e...
Catry, Teresa; Figueira, Paula; Carvalho, Lina; Monteiro, Rui J. R.; Coelho, Pedro Duarte; Lourenço, Pedro Miguel; Catry, Paulo; Tchantchalam, QuintinoShellfish harvesting in intertidal areas is a widespread and economically important activity in many countries across West Africa. However, in some areas, there is virtually no information concerning the levels of contaminants (and other elements related to nutritional aspects) in the harvested species. We collected sediments and several individuals of the West African bloody cockle Senilia senilis and of the r...