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dc.contributor.authorClarkson, Beverley R.en_US
dc.contributor.authorSchipper, Louis A.en_US
dc.contributor.authorClarkson, Bruce D.en_US
dc.date.accessioned2008-03-19T05:11:13Z
dc.date.available2007-05-14en_US
dc.date.available2008-03-19T05:11:13Z
dc.date.issued2004-06-01en_US
dc.identifier.citationClarkson, B. R., Schipper, L. A., & Clarkson, B. D. (2004). Vegetation and peat characteristics of restiad bogs on Chatham Island (Rekohu), New Zealand. New Zealand Journal of Botany. 42(2), 293-312 .en_US
dc.identifier.urihttps://hdl.handle.net/10289/217
dc.description.abstractRestiad bogs dominated by Sporadanthus traversii on Chatham Island, New Zealand, were sampled to correlate vegetation patterns and peat properties, and to compare with restiad systems dominated by Sporadanthus ferrugineus and Empodisma minus in the Waikato region, North Island, New Zealand. Classification and ordination resulted in five groups that reflected a disturbance gradient. The largest S. traversii group, which comprised plots from central, relatively intact bogs, had the lowest levels of total nitrogen (mean 1.20 mg cm-3), total phosphorus (mean 0.057 mg cm-3), total potassium (mean 0.083 mg cm-3), and available phosphorus (mean 18.6 μg cm-3). Modification by drainage, stock, and fires resulted in a decline of S. traversii and an increase of Gleichenia dicarpa fern cover, together with elevated peat nutrient levels and higher bulk density. Compared with peat dominated by Sporadanthus ferrugineus or Empodisma minus in relatively unmodified Waikato restiad bogs, Chatham Island peat under S. traversii has significantly higher total potassium, total nitrogen, available phosphorus, bulk density, and von Post decomposition indices, and significantly lower pH. Sporadanthus traversii and Empodisma minus have similar ecological roles in restiad bog development, occupying a relatively wide nutrient range, and regenerating readily from seed after fire. Despite differences in root morphology, S. traversii and E. minus are the major peat formers in raised restiad bogs on Chatham Island and in Waikato, respectively, and could be regarded as ecological equivalents.en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.publisherRoyal Society of New Zealanden_NZ
dc.relation.urihttp://www.rsnz.org/publish/nzjb/2004/019.phpen_US
dc.rightsThe final, definitive version of this article has been published in the Journal, New Zealand Journal of Botany, 42(2), (2004), (c) Royal Society of New Zealand at the Royal Society of New Zealand Journals Online webpages.en_US
dc.subjectpeaten_US
dc.subjectbogen_US
dc.subjectnutrientsen_US
dc.subjectdisturbance gradienten_US
dc.subjectRestionaceaeen_US
dc.subjectWaikatoen_US
dc.subjectSporadanthus traversii; S. ferrugineus; Empodisma minusen_US
dc.titleVegetation and peat characteristics of restiad bogs on Chatham Island (Rekohu), New Zealanden_US
dc.typeJournal Articleen_US
dc.relation.isPartOfNew Zealand Journal of Botanyen_NZ
pubs.begin-page293en_NZ
pubs.elements-id29942
pubs.end-page312en_NZ
pubs.issue2en_NZ
pubs.volume42en_NZ


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