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https://hdl.handle.net/1959.11/13500
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DC Field | Value | Language |
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dc.contributor.author | Rutherford, Susan | en |
dc.contributor.author | Griffith, Stephen John | en |
dc.contributor.author | Warwick, Nigel W | en |
dc.date.accessioned | 2013-10-04T16:51:00Z | - |
dc.date.issued | 2013 | - |
dc.identifier.citation | Australian Journal of Botany, 61(4), p. 254-265 | en |
dc.identifier.issn | 1444-9862 | en |
dc.identifier.issn | 0067-1924 | en |
dc.identifier.uri | https://hdl.handle.net/1959.11/13500 | - |
dc.description.abstract | The present study examined the water relations of wallum dry sclerophyll woodland on the lower north coast of New South Wales (NSW). Wallum is the regionally distinct vegetation of Quaternary dunefields and beach ridge plains along the eastern coast of Australia. Wallum sand masses contain large aquifers, and previous studies have suggested that many of the plant species may be groundwater dependent. However, the extent of this dependency is largely unknown, despite an increasing reliance on the aquifers for groundwater extraction. Fifteen species from five growth-form categories and seven plant families were investigated. The pre-dawn and midday xylem water potential (Ψₓ) of all species was monitored over a 20-month period from December 2007 to July 2009. Pressure-volume curve traits were determined for each species in late autumn 2008, including the osmotic potential at full (π₁₀₀) and zero (π₀) turgor, and bulk modulus of elasticity (ε). Carbon isotope ratios (δ¹³C) were determined in mid-autumn 2008 to measure water use efficiency (WUE). Comparative differences in water relations could be loosely related to growth forms. A tree (Eucalyptus 'racemosa' subsp. 'racemosa') and most large shrubs had low midday Ψₓ, π₁₀₀ and π₀, and high ε and WUE; whereas the majority of small and medium shrubs had high midday Ψₓ, π₁₀₀ and π₀, and low ε and WUE.However, some species of similar growth form displayed contrasting behaviour in their water relations (e.g. the herbs 'Caustis recurvata' var. 'recurvata' and 'Hypolaena fastigiata'), and such differences require further investigation. The results suggest that 'E. racemosa' subsp. 'racemosa' is likely to be groundwater dependent, and large shrubs such as 'Banksia aemula' may also utilise groundwater. Both species are widespread in wallum, and therefore have the potential to play a key role in monitoring ecosystem health where aquifers are subject to groundwater extraction. | en |
dc.language | en | en |
dc.publisher | CSIRO Publishing | en |
dc.relation.ispartof | Australian Journal of Botany | en |
dc.title | Water relations of selected wallum species in dry sclerophyll woodland on the lower north coast of New South Wales, Australia | en |
dc.type | Journal Article | en |
dc.identifier.doi | 10.1071/BT13037 | en |
dc.subject.keywords | Ecosystem Function | en |
dc.subject.keywords | Plant Physiology | en |
dc.subject.keywords | Environmental Monitoring | en |
local.contributor.firstname | Susan | en |
local.contributor.firstname | Stephen John | en |
local.contributor.firstname | Nigel W | en |
local.subject.for2008 | 050206 Environmental Monitoring | en |
local.subject.for2008 | 060705 Plant Physiology | en |
local.subject.for2008 | 050102 Ecosystem Function | en |
local.subject.seo2008 | 960902 Coastal and Estuarine Land Management | en |
local.subject.seo2008 | 960802 Coastal and Estuarine Flora, Fauna and Biodiversity | en |
local.subject.seo2008 | 960503 Ecosystem Assessment and Management of Coastal and Estuarine Environments | en |
local.profile.school | School of Environmental and Rural Science | en |
local.profile.email | sgriff41@une.edu.au | en |
local.profile.email | nwarwick@une.edu.au | en |
local.output.category | C1 | en |
local.record.place | au | en |
local.record.institution | University of New England | en |
local.identifier.epublicationsrecord | une-20130927-105025 | en |
local.publisher.place | Australia | en |
local.format.startpage | 254 | en |
local.format.endpage | 265 | en |
local.identifier.scopusid | 84879825787 | en |
local.peerreviewed | Yes | en |
local.identifier.volume | 61 | en |
local.identifier.issue | 4 | en |
local.contributor.lastname | Rutherford | en |
local.contributor.lastname | Griffith | en |
local.contributor.lastname | Warwick | en |
dc.identifier.staff | une-id:sgriff41 | en |
dc.identifier.staff | une-id:nwarwick | en |
local.profile.orcid | 0000-0001-7009-3183 | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.identifier.unepublicationid | une:13712 | en |
dc.identifier.academiclevel | Academic | en |
dc.identifier.academiclevel | Academic | en |
local.title.maintitle | Water relations of selected wallum species in dry sclerophyll woodland on the lower north coast of New South Wales, Australia | en |
local.output.categorydescription | C1 Refereed Article in a Scholarly Journal | en |
local.search.author | Rutherford, Susan | en |
local.search.author | Griffith, Stephen John | en |
local.search.author | Warwick, Nigel W | en |
local.uneassociation | Unknown | en |
local.year.published | 2013 | en |
local.subject.for2020 | 410599 Pollution and contamination not elsewhere classified | en |
local.subject.for2020 | 310802 Plant biochemistry | en |
local.subject.for2020 | 410203 Ecosystem function | en |
local.subject.seo2020 | 180299 Coastal and estuarine systems and management not elsewhere classified | en |
local.subject.seo2020 | 180203 Coastal or estuarine biodiversity | en |
local.subject.seo2020 | 180601 Assessment and management of terrestrial ecosystems | en |
Appears in Collections: | Journal Article |
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