14 research outputs found

    Global assessment of marine plastic exposure risk for oceanic birds

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    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 migration. However, the spatial overlap between petrels and plastics is poorly understood. Here we combine marine plastic density estimates with individual movement data for 7137 birds of 77 petrel species to estimate relative exposure risk. We identify high exposure risk areas in the Mediterranean and Black seas, and the northeast Pacific, northwest Pacific, South Atlantic and southwest Indian oceans. Plastic exposure risk varies greatly among species and populations, and between breeding and non-breeding seasons. Exposure risk is disproportionately high for Threatened species. Outside the Mediterranean and Black seas, exposure risk is highest in the high seas and Exclusive Economic Zones (EEZs) of the USA, Japan, and the UK. Birds generally had higher plastic exposure risk outside the EEZ of the country where they breed. We identify conservation and research priorities, and highlight that international collaboration is key to addressing the impacts of marine plastic on wide-ranging species

    Global assessment of marine plastic exposure risk for oceanic birds

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    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 migration. However, the spatial overlap between petrels and plastics is poorly understood. Here we combine marine plastic density estimates with individual movement data for 7137 birds of 77 petrel species to estimate relative exposure risk. We identify high exposure risk areas in the Mediterranean and Black seas, and the northeast Pacific, northwest Pacific, South Atlantic and southwest Indian oceans. Plastic exposure risk varies greatly among species and populations, and between breeding and non-breeding seasons. Exposure risk is disproportionately high for Threatened species. Outside the Mediterranean and Black seas, exposure risk is highest in the high seas and Exclusive Economic Zones (EEZs) of the USA, Japan, and the UK. Birds generally had higher plastic exposure risk outside the EEZ of the country where they breed. We identify conservation and research priorities, and highlight that international collaboration is key to addressing the impacts of marine plastic on wide-ranging species.B.L.C., C.H., and A.M. were funded by the Cambridge Conservation Initiative’s Collaborative Fund sponsored by the Prince Albert II of Monaco Foundation. E.J.P. was supported by the Natural Environment Research Council C-CLEAR doctoral training programme (Grant no. NE/S007164/1). We are grateful to all those who assisted with the collection and curation of tracking data. Further details are provided in the Supplementary Acknowledgements. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.Peer reviewe

    Global assessment of marine plastic exposure risk for oceanic birds

    Get PDF
    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 migration. However, the spatial overlap between petrels and plastics is poorly understood. Here we combine marine plastic density estimates with individual movement data for 7137 birds of 77 petrel species to estimate relative exposure risk. We identify high exposure risk areas in the Mediterranean and Black seas, and the northeast Pacific, northwest Pacific, South Atlantic and southwest Indian oceans. Plastic exposure risk varies greatly among species and populations, and between breeding and non-breeding seasons. Exposure risk is disproportionately high for Threatened species. Outside the Mediterranean and Black seas, exposure risk is highest in the high seas and Exclusive Economic Zones (EEZs) of the USA, Japan, and the UK. Birds generally had higher plastic exposure risk outside the EEZ of the country where they breed. We identify conservation and research priorities, and highlight that international collaboration is key to addressing the impacts of marine plastic on wide-ranging species

    An investigation of the seasonality of sudden infant death syndrome in the United States

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    Sudden Infant Death Syndrome (SIDS) is both the most common cause of post-neonatal mortality in developed countries, and of unknown cause. There is a marked winter peak in SIDS, and I investigate the correlates of that peak, to try and elucidate the causes of SIDS. I use vital statistics data sets, which are much larger than most data used in previous studies, allowing more statistical rigour in my analysis. Two sets of data are used: one (which only has death certificate information) has 26,690 SIDS deaths, and the other (which also has information from birth certificates) has 5,279 SIDS deaths. I test previous findings about SIDS before investigating seasonality of SIDS. I confirm that there are strong relationships between measures of disadvantage at the county level and the SIDS rate: poverty, non-white race, the proportion of births that were to teenagers, and the proportion of homes with bad plumbing are all associated with higher levels of SIDS. The effect on SIDS of being a member of a non-white race, however, all but disappeared in later analysis that could control for birth characteristics. Being a young mother is, nevertheless, still significant in the later analysis. I find seasonality in both month of birth and month of exposure patterns of SIDS, though the former may be an interaction of age at observation and month of exposure. I found no strong relationship between general climate of a county and the relative level of winter versus summer SIDS, although I find SIDS is higher in weeks when the temperature is colder. I find SIDS may be associated with viral pneumonia and other respiratory causes of death, judging from the seasonal and age at death patterns of those causes and SIDS. Low birth-weight is a strong predictor of SIDS, but seasonal variation in SIDS is not primarily due to seasonal variation in birth-weight, nor to variation in proportions of births which are premature

    Thoughts and spirits by wireless: imagining and building psychic telegraphs in America and Britain, circa 1900-1930

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    This is the author accepted manuscript. The final version is available from Taylor & Francis via the DOI in this record.This paper revises current understandings of the connections between electrical and psychic forms of communication in the early twentieth century. It builds on and moves beyond scholarly studies that explore the metaphorical and analogical uses of electrical communication in understanding telepathy, spiritualism and other psychic phenomena. I argue that in American and British cultures of wireless telegraphy, electrical experimentation, psychical research and spiritualism, there were sincere attempts to extend electrical-psychic analogies into technological thinking and realisation. Inspired by debates about telepathy, brain waves and other psychic effects, members of these cultures imagined and constructed electrical communication technologies that would address a range of psychic puzzles. Although the technological solutions to psychic puzzles ultimately proved inconclusive, they provide historians with striking insights into the role of ‘irrational’ topics in shaping imagined and actual technological development

    Thoughts and spirits by wireless: imagining and building psychic telegraphs in America and Britain, circa 1900–1930

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    Permanent Genetic Resources added to Molecular Ecology Resources Database 1 June 2010 - 31 July 2010

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    Correspondance: Molecular Ecology Resources Primer Development Consortium, E-mail: [email protected] audienceThis article documents the addition of 512 microsatellite marker loci and nine pairs of Single Nucleotide Polymorphism (SNP) sequencing primers to the Molecular Ecology Resources Database. Loci were developed for the following species: Alcippe morrisonia morrisonia, Bashania fangiana, Bashania fargesii, Chaetodon vagabundus, Colletes floralis, Coluber constrictor flaviventris, Coptotermes gestroi, Crotophaga major, Cyprinella lutrensis, Danaus plexippus, Fagus grandifolia, Falco tinnunculus, Fletcherimyia fletcheri, Hydrilla verticillata, Laterallus jamaicensis coturniculus, Leavenworthia alabamica, Marmosops incanus, Miichthys miiuy, Nasua nasua, Noturus exilis, Odontesthes bonariensis, Quadrula fragosa, Pinctada maxima, Pseudaletia separata, Pseudoperonospora cubensis, Podocarpus elatus, Portunus trituberculatus, Rhagoletis cerasi, Rhinella schneideri, Sarracenia alata, Skeletonema marinoi, Sminthurus viridis, Syngnathus abaster, Uroteuthis (Photololigo) chinensis, Verticillium dahliae, Wasmannia auropunctata, and Zygochlamys patagonica. These loci were cross-tested on the following species: Chaetodon baronessa, Falco columbarius, Falco eleonorae, Falco naumanni, Falco peregrinus, Falco subbuteo, Didelphis aurita, Gracilinanus microtarsus, Marmosops paulensis, Monodelphis Americana, Odontesthes hatcheri, Podocarpus grayi, Podocarpus lawrencei, Podocarpus smithii, Portunus pelagicus, Syngnathus acus, Syngnathus typhle,Uroteuthis (Photololigo) edulis, Uroteuthis (Photololigo) duvauceli and Verticillium albo-atrum. This article also documents the addition of nine sequencing primer pairs and sixteen allele specific primers or probes for Oncorhynchus mykiss and Oncorhynchus tshawytscha; these primers and assays were cross-tested in both species
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