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dc.contributor.authorMarx, Samuel K
dc.contributor.authorMcGowan, Hamish A
dc.contributor.authorKamber, Balz S
dc.contributor.authorKnight, Jon M
dc.contributor.authorDenholm, John
dc.contributor.authorZawadzki, Atun
dc.date.accessioned2017-05-03T11:45:50Z
dc.date.available2017-05-03T11:45:50Z
dc.date.issued2014
dc.date.modified2014-08-26T05:50:14Z
dc.identifier.issn2169-9003
dc.identifier.doi10.1002/2013JF002948
dc.identifier.urihttp://hdl.handle.net/10072/62008
dc.description.abstractAustralia, the last continent to undergo industrial development, is an ideal environment in which to quantify the magnitude of human-induced environmental change during the Anthropocene because its entire agricultural and industrial history has occurred within this period. Analysis of an alpine peat mire showed that rapid industrial and agricultural development (both pastoral and cropping) over the past 200 years has resulted in significant environmental change in Australia. Beginning in the 1880s, rates of wind erosion and metal enrichment were up to 10 and 30 times that of background natural conditions, respectively. Increased dust deposition and an expansion in dust source areas were found to map the progression of European farming across the continent,while dust deposition pulses in the mire matched known land degradation events. After 1990 dust deposition decreased, returning to pre-1880 rates. This was attributed to three factors: net soil loss following more than a century of agricultural activity, increased environmental awareness and soil conservation, and changing windiness. Metal enrichment in the mire reached approximately 2 times natural background accumulation rates by the 1980s as Australia's mining industry expanded. However, metal enrichment continued to increase after the 1980s reaching an average of ~5 times background rates by 2006 and reflecting increased mineral resource development in Australia. Collectively, the results show that changes to Australia's geochemical and sedimentary systems, as a result of agricultural and industrial development, have profoundly changed the Australian environment during the past two centuries.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.format.extent2161146 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglish
dc.language.isoen_US
dc.publisherWiley-Blackwell Publishing
dc.publisher.placeUnited States
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom45
dc.relation.ispartofpageto61
dc.relation.ispartofissue1
dc.relation.ispartofjournalJournal of Geophysical Research: Earth Surface
dc.relation.ispartofvolume119
dc.rights.retentionY
dc.subject.fieldofresearchInorganic Geochemistry
dc.subject.fieldofresearchSurface Processes
dc.subject.fieldofresearchcode040202
dc.subject.fieldofresearchcode040607
dc.titleUnprecedented wind erosion and perturbation of surface geochemistry marks the Anthropocene in Australia
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.rights.copyright© 2014 American Geophysical Union. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
gro.date.issued2014
gro.hasfulltextFull Text
gro.griffith.authorKnight, Jon M.


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