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Effects of changing the supply of nitrogen and phosphorus on growth and interactions between Eucalyptus globulus and Acacai mearnsii in a pot trial

Forrester, David I.; Cowie, Annette; Bauhus, Juergen; Wood, Jeffrey; Forrester, Robert

Description

Significant increases in aboveground biomass production have been observed in mixed plantations of Eucalyptus globulus and Acacia mearnsii when compared to monocultures. However, this positive growth response may be enhanced or lost with changes in resource availability. Therefore this study examined the effect of the commonly limiting resources soil N, P and moisture on the growth of E. globulus and A. mearnsii mixtures in a pot trial. Pots containing two E. globulus plants, two A. mearnsii...[Show more]

dc.contributor.authorForrester, David I.
dc.contributor.authorCowie, Annette
dc.contributor.authorBauhus, Juergen
dc.contributor.authorWood, Jeffrey
dc.contributor.authorForrester, Robert
dc.date.accessioned2015-12-10T23:00:30Z
dc.date.available2015-12-10T23:00:30Z
dc.identifier.issn0032-079X
dc.identifier.urihttp://hdl.handle.net/1885/61378
dc.description.abstractSignificant increases in aboveground biomass production have been observed in mixed plantations of Eucalyptus globulus and Acacia mearnsii when compared to monocultures. However, this positive growth response may be enhanced or lost with changes in resource availability. Therefore this study examined the effect of the commonly limiting resources soil N, P and moisture on the growth of E. globulus and A. mearnsii mixtures in a pot trial. Pots containing two E. globulus plants, two A. mearnsii plants or one of each species were treated with high and low levels of N and P fertiliser. After 50 weeks, E. globulus plants grew more aboveground biomass in mixtures than monocultures. A. mearnsii were larger in mixtures only at low N, where both species were similar in size and the combined aboveground biomass of both species in mixture was greater than that of monocultures. At high N and both high and low levels of P fertiliser E. globulus appeared to dominate and suppress A. mearnsii. In these treatments, the faster growth of E. globulus in mixture did not compensate the reduced growth of A. mearnsii, so mixtures were less productive than (or not significantly different from) E. globulus monocultures. The greater competitiveness of E. globulus in these situations may have resulted from its higher N and P use efficiency and greater growth response to N and P fertilisers compared to A. mearnsii. This trial indicates that the complex interactions between species in mixtures, and thus the success of mixed plantations, can be strongly influenced by site factors such as the availability of N and P.
dc.publisherKluwer Academic Publishers
dc.sourcePlant and Soil
dc.subjectKeywords: aboveground biomass; facilitation; growth; nitrogen; phosphorus; Acacia; Acacia mearnsii; Eucalyptus; Eucalyptus globulus Acacia mearnsii; Competition; Eucalyptus globulus; Facilitation; Mixed-species
dc.titleEffects of changing the supply of nitrogen and phosphorus on growth and interactions between Eucalyptus globulus and Acacai mearnsii in a pot trial
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume280
dc.date.issued2006
local.identifier.absfor070599 - Forestry Sciences not elsewhere classified
local.identifier.ariespublicationU4105084xPUB607
local.type.statusPublished Version
local.contributor.affiliationForrester, David I., University of Melbourne
local.contributor.affiliationCowie, Annette, NSW Department of Primary Industries
local.contributor.affiliationBauhus, Juergen, University of Freiburg
local.contributor.affiliationWood, Jeffrey, College of Medicine, Biology and Environment, ANU
local.contributor.affiliationForrester, Robert, College of Physical and Mathematical Sciences, ANU
local.bibliographicCitation.startpage267
local.bibliographicCitation.lastpage277
local.identifier.doi10.1007/s11104-005-3228-x
dc.date.updated2015-12-10T08:20:36Z
local.identifier.scopusID2-s2.0-33644606053
CollectionsANU Research Publications

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