Long-term P fertilisation of pasture soil did not increase soil organic matter stocks but increased microbial biomass and activity
dc.contributor.author | Wakelin, SA | |
dc.contributor.author | Condron, LM | |
dc.contributor.author | Gerard, E | |
dc.contributor.author | Dignam, BEA | |
dc.contributor.author | Black, Amanda | |
dc.contributor.author | O Callaghan, M | |
dc.date.accessioned | 2017-10-30T00:34:05Z | |
dc.date.available | 2017-06-02 | |
dc.date.issued | 2017-07 | |
dc.date.submitted | 2017-05-22 | |
dc.description.abstract | The soil organic matter (OM) content of soils in a long-term fertiliser field trial (Winchmore, New Zealand) are similar (P > 0.05) despite >60 years application of different phosphorus (P) rates. As the net primary productivity increased with P addition, greater losses of carbon (C) occur concomitantly with increased P fertility. Several hypotheses have been proposed to explain the mechanisms, including C leaching, increased earthworm activity or elevated rates of microbial activity. In this study, we found support for both direct and secondary effects of soil P on soil C through impacts on the soil microbial community. Microbial biomass, inferred through quantification of hot water extractable C, increased with soil P status and decreased with C/P ratio (P < 0.001). However, the microbial biomass had no relationship with soil organic C content (P = 0.485). Mineralisation of C substrates added to soil also increased with soil P status (total P, R² = 0.84; P < 0.001). These results indicated potential conditioning of the microbial community for rapid C cycling. Utilisation of different C compounds was clustered by cophenetic similarity; a distinct group of ten carbon compounds was identified for which rates of mineralisation were strongly associated with soil P status and microbial biomass. However, this alteration of microbial community size and activity was not reflected in abundances of selected oligotrophic and copiotrophic taxa. As such, the alteration may be due to changes in the abundances of all taxa, i.e. a general community response. | |
dc.format.extent | pp.511-521 | |
dc.identifier | https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=elements_prod&SrcAuth=WosAPI&KeyUT=WOS:000403352800005&DestLinkType=FullRecord&DestApp=WOS_CPL | |
dc.identifier.citation | Wakelin et al. (2017). Long-term P fertilisation of pasture soil did not increase soil organic matter stocks but increased microbial biomass and activity. Biology and Fertility of Soils, 53(5), 511-521. doi:10.1007/s00374-017-1212-2 | |
dc.identifier.doi | 10.1007/s00374-017-1212-2 | |
dc.identifier.eissn | 1432-0789 | |
dc.identifier.issn | 0178-2762 | |
dc.identifier.other | EX6LC (isidoc) | |
dc.identifier.uri | https://hdl.handle.net/10182/8717 | |
dc.language | en | |
dc.language.iso | en | |
dc.publisher | Springer Verlag on behalf of International Society of Soil Science | |
dc.relation | The original publication is available from Springer Verlag on behalf of International Society of Soil Science - https://doi.org/10.1007/s00374-017-1212-2 - http://dx.doi.org/10.1007/s00374-017-1212-2 | |
dc.relation.isPartOf | Biology and Fertility of Soils | |
dc.relation.uri | https://doi.org/10.1007/s00374-017-1212-2 | |
dc.rights | © Springer-Verlag Berlin Heidelberg 2017 | |
dc.subject | MicroResp | |
dc.subject | microbial biomass | |
dc.subject | organic matter | |
dc.subject | phosphorus | |
dc.subject | microbial activity | |
dc.subject | copiotroph | |
dc.subject | oligotroph | |
dc.subject.anzsrc2020 | ANZSRC::30 Agricultural, veterinary and food sciences | |
dc.subject.anzsrc2020 | ANZSRC::31 Biological sciences | |
dc.subject.anzsrc2020 | ANZSRC::41 Environmental sciences | |
dc.title | Long-term P fertilisation of pasture soil did not increase soil organic matter stocks but increased microbial biomass and activity | |
dc.type | Journal Article | |
lu.contributor.unit | LU | |
lu.contributor.unit | LU|Agriculture and Life Sciences | |
lu.contributor.unit | LU|Agriculture and Life Sciences|SOILS | |
lu.contributor.unit | LU|Research Management Office | |
lu.contributor.unit | LU|Research Management Office|OLD QE18 | |
lu.contributor.unit | LU|Centre of Excellence for One Biosecurity Research, Analysis and Synthesis | |
lu.identifier.orcid | 0000-0001-7302-0895 | |
pubs.issue | 5 | |
pubs.publication-status | Published | |
pubs.publisher-url | http://dx.doi.org/10.1007/s00374-017-1212-2 | |
pubs.volume | 53 |