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Coral record of increased sediment flux to the inner Great Barrier Reef since European settlement

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dc.contributor Australian Institute Of Marine Science
dc.contributor Australian National University
dc.contributor Australian Natl Univ
dc.contributor Australian Inst Marine Sci
dc.contributor Res Sch Earth Sci
dc.contributor Australian Institute Of Marine Science (aims) en BARNES, D MCCULLOCH, M FALLON, S WYNDHAM, T HENDY, E LOUGH, J 2017-03-21T01:16:22Z 2017-03-21T01:16:22Z 2013-02-28T06:48:05Z 2020-07-20T00:46:24Z 2017-03-21T01:16:22Z 2017-03-21T01:16:22Z 2013-02-28T06:48:05Z 2020-07-20T00:46:24Z 2003-02-13
dc.identifier 6422 en
dc.identifier.citation McCulloch MT, Fallon S, Wyndham T, Hendy EJ, Lough JM and Barnes DJ (2003) Coral record of increased sediment flux to the inner Great Barrier Reef since European settlement. Nature. 421: 727-730. en
dc.identifier.issn 0028-0836
dc.description.abstract The effect of European settlement on water quality in the Great Barrier Reef of Australia is a long-standing and controversial issue(1-6). Erosion and sediment transport in river catchments in this region have increased substantially since European settlement(6-10), but the magnitude of these changes remains uncertain(1-10). Here we report analyses of Ba/Ca ratios in long-lived Porites coral from Havannah Reef-a site on the inner Great Barrier Reef that is influenced by flood plumes from the Burdekin river-to establish a record of sediment fluxes from about 1750 to 1998. We find that, in the early part of the record, suspended sediment from river floods reached the inner reef area only occasionally, whereas after about 1870-following the beginning of European settlement-a five- to tenfold increase in the delivery of sediments is recorded with the highest fluxes occurring during the drought-breaking floods. We conclude that, since European settlement, land-use practices such as clearing and overstocking have led to major degradation of the semi-arid river catchments, resulting in substantially increased sediment loads entering the inner Great Barrier Reef.
dc.language English
dc.language en en
dc.relation.ispartof Null
dc.relation.ispartof Nature - pages: 421: 727-730 en
dc.subject Phase-shifts
dc.subject Science & Technology - Other Topics
dc.subject Issues
dc.subject Multidisciplinary Sciences
dc.subject Australia
dc.subject Bands
dc.subject Estuary
dc.subject Massive Corals
dc.subject Water
dc.subject Perspectives
dc.title Coral record of increased sediment flux to the inner Great Barrier Reef since European settlement
dc.type journal article en
dc.identifier.doi 10.1038/nature01361
dc.identifier.wos WOS:000180938000039

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