The Experts below are selected from a list of 1542 Experts worldwide ranked by ideXlab platform
Lauren Roman - One of the best experts on this subject based on the ideXlab platform.
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Ecological drivers of marine debris ingestion in Procellariiform Seabirds
Scientific Reports, 2019Co-Authors: Lauren Roman, Elizabeth Bell, Britta Denise Hardesty, Chris Wilcox, Mark A. HindellAbstract:Procellariiform seabirds are both the most threatened bird group globally, and the group with the highest incidence of marine debris ingestion. We examined the incidence and ecological factors associated with marine debris ingestion in Procellariiformes by examining seabirds collected at a global seabird hotspot, the Australasian - Southern Ocean boundary. We examined marine debris ingestion trends in 1734 individuals of 51 Procellariform species, finding significant variation in the incidence of marine debris abundance among species. Variation in the incidence of marine debris ingestion between species was influenced by the taxonomy, foraging ecology, diet, and foraging range overlaps with oceanic regions polluted with marine debris. Among the ecological drivers of marine debris ingestion variability in Procellariiformes, we demonstrate that the combination of taxonomy, foraging method, diet, and exposure to marine debris are the most important determinants of incidence of ingestion. We use these results to develop a global forecast for Procellariiform taxa at the risk of highest incidence of marine debris ingestion. We find seabirds that forage at the surface; especially by surface seizing, diving and filtering, those with a crustacean dominant diet, and those that forage in or near marine debris hotspots are at highest risk of debris ingestion. We predict that family with the highest risk are the storm petrels (Hydrobatidae and Oceanitidae). We demonstrate that the greater the exposure of high-risk groups to marine debris while foraging, the greater the incidence and number of marine debris items will be ingested.
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Anthropogenic Debris Ingestion by Avifauna in Eastern Australia
PloS one, 2016Co-Authors: Lauren Roman, Britta Denise Hardesty, Qamar Schuyler, Kathy A. TownsendAbstract:Anthropogenic debris in the world’s oceans and coastal environments is a pervasive global issue that has both direct and indirect impacts on avifauna. The number of bird species affected, the feeding ecologies associated with an increased risk of debris ingestion, and selectivity of ingested debris have yet to be investigated in most of Australia’s coastal and marine birds. With this study we aim to address the paucity of data regarding marine debris ingestion in Australian coastal and marine bird species. We investigated which Australian bird groups ingest marine debris, and whether debris-ingesting groups exhibit selectivity associated with their taxonomy, habitat or foraging methods. Here we present the largest multispecies study of anthropogenic debris ingestion in Australasian avifauna to date. We necropsied and investigated the gastrointestinal contents of 378 birds across 61 species, collected dead across eastern Australia. These species represented nine taxonomic orders, five habitat groups and six feeding strategies. Among investigated species, thirty percent had ingested debris, though ingestion did not occur uniformly within the orders of birds surveyed. Debris ingestion was found to occur in orders Procellariiformes, Suliformes, Charadriiformes and Pelecaniformes, across all surveyed habitats, and among birds that foraged by surface feeding, pursuit diving and search-by-sight. Procellariiformes, birds in pelagic habitats, and surface feeding marine birds ingested debris with the greatest frequency. Among birds which were found to ingest marine debris, we investigated debris selectivity and found that marine birds were selective with respect to both type and colour of debris. Selectivity for type and colour of debris significantly correlated with taxonomic order, habitat and foraging strategy. This study highlights the significant impact of feeding ecology on debris ingestion among Australia’s avifauna.
Mark A. Hindell - One of the best experts on this subject based on the ideXlab platform.
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Ecological drivers of marine debris ingestion in Procellariiform Seabirds
Scientific Reports, 2019Co-Authors: Lauren Roman, Elizabeth Bell, Britta Denise Hardesty, Chris Wilcox, Mark A. HindellAbstract:Procellariiform seabirds are both the most threatened bird group globally, and the group with the highest incidence of marine debris ingestion. We examined the incidence and ecological factors associated with marine debris ingestion in Procellariiformes by examining seabirds collected at a global seabird hotspot, the Australasian - Southern Ocean boundary. We examined marine debris ingestion trends in 1734 individuals of 51 Procellariform species, finding significant variation in the incidence of marine debris abundance among species. Variation in the incidence of marine debris ingestion between species was influenced by the taxonomy, foraging ecology, diet, and foraging range overlaps with oceanic regions polluted with marine debris. Among the ecological drivers of marine debris ingestion variability in Procellariiformes, we demonstrate that the combination of taxonomy, foraging method, diet, and exposure to marine debris are the most important determinants of incidence of ingestion. We use these results to develop a global forecast for Procellariiform taxa at the risk of highest incidence of marine debris ingestion. We find seabirds that forage at the surface; especially by surface seizing, diving and filtering, those with a crustacean dominant diet, and those that forage in or near marine debris hotspots are at highest risk of debris ingestion. We predict that family with the highest risk are the storm petrels (Hydrobatidae and Oceanitidae). We demonstrate that the greater the exposure of high-risk groups to marine debris while foraging, the greater the incidence and number of marine debris items will be ingested.
Britta Denise Hardesty - One of the best experts on this subject based on the ideXlab platform.
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Ecological drivers of marine debris ingestion in Procellariiform Seabirds
Scientific Reports, 2019Co-Authors: Lauren Roman, Elizabeth Bell, Britta Denise Hardesty, Chris Wilcox, Mark A. HindellAbstract:Procellariiform seabirds are both the most threatened bird group globally, and the group with the highest incidence of marine debris ingestion. We examined the incidence and ecological factors associated with marine debris ingestion in Procellariiformes by examining seabirds collected at a global seabird hotspot, the Australasian - Southern Ocean boundary. We examined marine debris ingestion trends in 1734 individuals of 51 Procellariform species, finding significant variation in the incidence of marine debris abundance among species. Variation in the incidence of marine debris ingestion between species was influenced by the taxonomy, foraging ecology, diet, and foraging range overlaps with oceanic regions polluted with marine debris. Among the ecological drivers of marine debris ingestion variability in Procellariiformes, we demonstrate that the combination of taxonomy, foraging method, diet, and exposure to marine debris are the most important determinants of incidence of ingestion. We use these results to develop a global forecast for Procellariiform taxa at the risk of highest incidence of marine debris ingestion. We find seabirds that forage at the surface; especially by surface seizing, diving and filtering, those with a crustacean dominant diet, and those that forage in or near marine debris hotspots are at highest risk of debris ingestion. We predict that family with the highest risk are the storm petrels (Hydrobatidae and Oceanitidae). We demonstrate that the greater the exposure of high-risk groups to marine debris while foraging, the greater the incidence and number of marine debris items will be ingested.
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Anthropogenic Debris Ingestion by Avifauna in Eastern Australia
PloS one, 2016Co-Authors: Lauren Roman, Britta Denise Hardesty, Qamar Schuyler, Kathy A. TownsendAbstract:Anthropogenic debris in the world’s oceans and coastal environments is a pervasive global issue that has both direct and indirect impacts on avifauna. The number of bird species affected, the feeding ecologies associated with an increased risk of debris ingestion, and selectivity of ingested debris have yet to be investigated in most of Australia’s coastal and marine birds. With this study we aim to address the paucity of data regarding marine debris ingestion in Australian coastal and marine bird species. We investigated which Australian bird groups ingest marine debris, and whether debris-ingesting groups exhibit selectivity associated with their taxonomy, habitat or foraging methods. Here we present the largest multispecies study of anthropogenic debris ingestion in Australasian avifauna to date. We necropsied and investigated the gastrointestinal contents of 378 birds across 61 species, collected dead across eastern Australia. These species represented nine taxonomic orders, five habitat groups and six feeding strategies. Among investigated species, thirty percent had ingested debris, though ingestion did not occur uniformly within the orders of birds surveyed. Debris ingestion was found to occur in orders Procellariiformes, Suliformes, Charadriiformes and Pelecaniformes, across all surveyed habitats, and among birds that foraged by surface feeding, pursuit diving and search-by-sight. Procellariiformes, birds in pelagic habitats, and surface feeding marine birds ingested debris with the greatest frequency. Among birds which were found to ingest marine debris, we investigated debris selectivity and found that marine birds were selective with respect to both type and colour of debris. Selectivity for type and colour of debris significantly correlated with taxonomic order, habitat and foraging strategy. This study highlights the significant impact of feeding ecology on debris ingestion among Australia’s avifauna.
Mironov S.v. - One of the best experts on this subject based on the ideXlab platform.
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REDESCRIPTION OF THE FEATHER MITE SPECIES, ZACHVATKINIA PUFFINI (BUCHHOLZ, 1869) (ACARIFORMES: AVENZOARIIDAE), FROM ITS TYPE HOST, THE GREY PETREL PROCELLARIA CINEREA (Procellariiformes: PROCELLARIIDAE)
2020Co-Authors: Stefan L. M., Mironov S.v.Abstract:The feather mite species, Zachvatkinia puffini (Buchholz, 1869) (Acariformes: Avenzoariidae), the type species of the genus Zachvatkinia Dubinin, 1949, is redescribed based on specimens collected from its type host, the Grey Petrel Procellaria cinerea Gmelin, 1789 (Procellariiformes: Procellariidae). Zachvatkinia robusta Mironov, 1991 syn. n. from P. aequinoctialis Linnaeus, 1758 is synonymized with Z. puffini
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A NEW FEATHER MITE OF THE GENUS PROMEGNINIA GAUD ET ATYEO, 1967 (ACARIFORMES: AVENZOARIIDAE) FROM THE GRAY-HEADED ALBATROSS THALASSARCHE CHRYSOSTOMA (Procellariiformes: DIOMEDEIDAE)
2020Co-Authors: Mironov S.v.Abstract:A new feather mite species Promegninia thalassarche sp. n. (Avenzoariidae: Bonnetellinae) is described from the Gray-headed Albatross Thalassarche chrysostoma (Forster) (Procellariiformes: Diomedeidae) from South Georgia Island. The new species is morphologically close to the type species of the genus, P. pedimana (Trouessart, 1899), and most clearly differsfrom that species by having the terminal lamellae bidentate in males and the hysteronotal and humeral shields fused in females
Rosalinda Carmela Montone - One of the best experts on this subject based on the ideXlab platform.
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Study on elements concentrations on seabird feathers by instrumental neutron activation analysis
Brazilian Journal of Radiation Sciences, 2019Co-Authors: Carolina Yume Sawamura Theophilo, Fernanda I. Colabuono, Rosalinda Carmela Montone, Rubens Cesar Lopes Figueira, Edson G. MoreiraAbstract:Seabirds are very sensitive to environmental changes and due to their large longevity they are also sensitive to cumulative impacts. These birds usually occupy the higher trophic levels. White-chinned petrel ( Procellaria aequinoctialis ) and black-browed albatross ( Thalassarche melanophris ) are Procellariiformes, which is a seabird order, composed of 4 families. In the last years, researches are being done and actions are being taken to reduce the mortality of albatrosses and petrels caused by human activities. Due to the great ecological importance of these birds and the developed work with Procellariiformes, this study purpose was to quantify the Br, Cl, Cu, K, Mg, Mn, Na and V elements in white-chinned petrel and black-browed albatross feathers. Bird specimens were killed accidentally by pelagic longline fisheries operating off southern Brazil. Feathers were cleaned with acetone and then milled in a cryogenic mill. Instrumental Neutron Activation Analysis (INAA) was used for quantification of the element concentrations and measurements of induced activities were performed in a High Purity Germanium (HPGe) detector for gamma ray spectrometry. The obtained results on feathers showed that concentrations in these birds are not higher than others studies with the same species and, with exception of Br, there are no significant differences between elements mean concentrations in the two seabirds.
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Organochlorine contaminants in albatrosses and petrels during migration in South Atlantic Ocean.
Chemosphere, 2011Co-Authors: Fernanda I. Colabuono, Satie Taniguchi, Rosalinda Carmela MontoneAbstract:Abstract Albatrosses and petrels (Procellariiformes) are migratory oceanic birds of considerable conservational interest. Polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) were assessed in the subcutaneous fat, liver and muscle of 100 birds belonging to eight species of Procellariiformes collected during their migration period in southern Brazil, one of the most important feeding areas for these species. Although the profiles of PCBs and OCPs were similar among the individuals, with predominance of penta, hexa and heptachlorobiphenyls and p ′ p- DDE, organochlorine concentrations exhibited a high degree of intra-species variability. The influence of body condition during the migration period in the distribution of organochlorine contaminants was also evaluated, showing that it is a significant factor in the variation and redistribution of these compounds in the tissues of these birds. The intense use of lipid reserves associated to the contamination from organochlorine compounds could be a troubling factor for seabirds with extended breeding periods and that spend most of their lives at sea migrating long distances, such as most of Procellariiformes. Studies on contamination are necessary to improve the knowledge of the threats to these birds and their populations as well as to contribute with information about persistent organic pollutants in the South Atlantic marine environment.
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Polychlorinated biphenyls and organochlorine pesticides in plastics ingested by seabirds.
Marine pollution bulletin, 2010Co-Authors: Fernanda I. Colabuono, Satie Taniguchi, Rosalinda Carmela MontoneAbstract:Abstract The occurrence of plastic objects in the digestive tract was assessed in eight species of Procellariiformes collected in southern Brazil and the occurrence of polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) in the ingested plastics pellets and plastic fragments was evaluated. PCBs were detected in plastic pellets (491 ng g−1) and plastic fragments (243–418 ng g−1). Among the OCPs, p,p′-DDE had the highest concentrations, ranging from 68.0 to 99.0 ng g−1. The occurrence of organic pollutants in post-consumer plastics supports the fact that plastics are an important source carrying persistent organic pollutants in the marine environment. Although transfer through the food chain may be the main source of exposure to POPs to seabirds, plastics could be an additional source for the organisms which ingest them, like Procellariiformes which are the seabirds most affected by plastic pollution.
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Plastic ingestion by Procellariiformes in Southern Brazil.
Marine pollution bulletin, 2008Co-Authors: Fernanda I. Colabuono, Viviane Barquete, Beatrizes S Domingues, Rosalinda Carmela MontoneAbstract:The Procellariiformes are the birds most affected by plastic pollution. Plastic fragments and pellets were the most frequent items found in the digestive tract of eight species of Procellariiformes incidentally caught by longline fisheries as well as beached birds in Southern Brazil. Plastic objects were found in 62% of the petrels and 12% of the albatrosses. The Great shearwater, Manx shearwater, Cory’s shearwater and Antarctic fulmar were found to have greater quantities and frequencies of occurrence of plastic. There was no significant difference in the number of plastics between the birds from longline fisheries and beached birds. No correlation was found between the number of prey and number of plastics in the digestive tract of the birds analyzed, but this does not discard the hypothesis that, in some cases, the presence of plastic in the digestive tract has a negative effect on the feeding efficiency of these birds.
