4,348 research outputs found

    ed-hawkins/weather-rescue-data: Weather Rescue Data v2.2

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    <p>Version 2.2 of a dataset containing weather observations recovered from various projects. Most files are in SEF format - see https://datarescue.climate.copernicus.eu/node/80 for details.</p&gt

    Graham. Hawkins

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    An editorial cartoon by Ed Gamble, the cartoon references Bob Graham being chased by Ronald Reagan and Paula Hawkins on a bicycle. Box: 3 Folder: 2https://digitalcommons.unf.edu/ed_gamble/1369/thumbnail.jp

    Interactive effects of losing key grazers and ecosystem engineers vary with environmental context

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    Loss of biodiversity may cause significant changes to ecosystem structure and functioning. Evidence from long-term in situ removal experiments is rare but important in determining the effects of biodiversity loss against a background of environmental variation. Limpets and mussels are thought to be important in controlling community structure on wave-exposed shores in the UK: limpets as key grazers, mussels as ecosystem engineers. A long-term factorial removal experiment revealed interactive effects that varied between 2 shores in SW England. At one site (Harlyn), removing limpets caused a significant shift in community structure, but where limpets were lost, the presence or absence of mussels made little difference. Where limpets were present, however, the removal of mussels changed the structure and variability of the community. At the other site (Polzeath), the loss of mussels caused significant changes in community structure, and limpets played a less important role. At Harlyn, fucoid algae were abundant throughout the year. There were fewer algae at Polzeath, and cover was dominated by the summer bloom of ephemerals. At Harlyn, the limpets played a major role in controlling algae, but their effects were mediated by the presence of mussels. Other grazers were not able to fulfil their role. At Polzeath, mussels were far more important, and ephemeral algae grew on them regardless of the presence or loss of limpets. These findings emphasise the need to assess spatial and temporal variation in the effects of biodiversity loss and the importance of interactive effects of loss of multiple species from different functional groups

    [Portrait of Ed Hawkins]

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    Photograph of a young man that is in an oval shape with a rectangular frame. Notes on the back of the photograph identify him as Ed Hawkins and state the image was taken in the late 1800s. His hair is combed to the side and he is wearing a dark suit and tie. An accompanying caption states that he married Lucy Seal between 1908-10

    Florida Senator Hawkins Confronts Congressional Earmarks And Pet Projects!

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    “Before I vote on this crucial issue… I’m going to ask my advisor!” “Senator Hawkins” “Taxi – Wash. D.C.” “…And those turkeys better shape up or we’ll vote ‘em out!” “Great… is that a gobble, gobble turkey?” An editorial cartoon by Ed Gamble, the cartoon references U.S. Senator from Florida Paula Hawkins.https://digitalcommons.unf.edu/ed_gamble/2126/thumbnail.jp

    DONALD T. HAWKINS, ed., Personal Archiving: Preserving Our Digital Heritage

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    Personal Archiving: Preserving Our Digital Heritage. DONALD T. HAWKINS, ed. Medford, NJ: Information Today, Inc., 2013. xx, 299 pp. ISBN 978-1-57387-480-9
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