987 resultados para MacKay, Barry


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Herbicides, particularly diuron, were correlated with severe and widespread dieback of the dominant mangrove, Avicennia marina (Forsk.) Vieth. var. eucalyptifolia (Val.) N.C. Duke (Avicenniaceae), its reduced canopy condition, and declines in seedling health within three neighbouring estuaries in the Mackay region of NE Australia. This unusual species-specific dieback, first observed in the early 1990s, had gotten notably worse by 2002 to affect > 30km(2) of mangroves in at least five adjacent estuaries in the region. Over the past century, agricultural production has responded well to the demands of increasing population with improvements in farm efficiency assisted by significant increases in the use of agricultural chemicals. However, with regular and episodic river flow events, these chemicals have sometimes found their way into estuarine and nearshore water and sediments where their effects on marine habitats have been largely unquantified. Investigations over the last three years in the Mackay region provide compelling evidence of diuron, and possibly other agricultural herbicides, as the most likely cause of the severe and widespread mangrove dieback. The likely consequences of such dieback included declines in coastal water quality with increased turbidity, nutrients and sediment deposition, as well as further dispersal of the toxic chemicals. The implications of such findings are immense since they describe not only the serious deterioration of protected and beneficial mangrove habitat but also the potential for significant direct and indirect effects on other highly-valued estuarine and marine habitats in the region, including seagrass beds and coral reefs of the Great Barrier Reef lagoon. This article reviews all key findings and observations to date and describes the essential correlative and causative evidence. (c) 2004 Elsevier Ltd. All rights reserved.

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Most Irish people, when asked what they know of the life and death of Kevin Barry, will pause for a moment while they recall the words of a famously maudlin ballad. A few points will emerge: ‘a lad of eighteen summers’ … ‘British soldiers tortured Barry’ … ‘refused to turn informer’ … ‘hanged him like a dog’ … ‘another martyr for old Ireland, another murder for the crown’. That they know anything at all about Kevin Barry is testimony, among other things, to the power of popular music for the making of political propaganda. Along with Father Murphy, Seán South and Fergal O’Hanlon, Kevin Barry figures in the pantheon of nationalist Ireland’s popular historical heroes, largely because somebody happened to write a good song about him. In many ways this is unfortunate, for Barry and the rest were once living people, and the process of iconographifying them in popular balladry, like all forms of political propaganda, serves not to clarify their roles in the historical events in which they played a part, but rather to obscure and distort them. So it is worth reconsidering the story of Kevin Barry, for a number of reasons. To begin with, his short life reached its climax at a vital moment in the long struggle for Irish self-government, a moment when the violence unleashed in 1916 burst forth again with renewed savagery on both British and Irish sides, involving in the Barry case the deaths of four young men aged between fifteen and twenty.

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