caa a22 4500 606219013 CHVBK 20210128101116.0 cr unu---uuuuu 210128e20150601xx s 000 0 eng 10.1007/s11104-015-2432-6 doi (NATIONALLICENCE)springer-10.1007/s11104-015-2432-6 Response of belowground communities to short-term phosphorus addition ina phosphorus-limited woodland [Elektronische Daten] [Uffe Nielsen, Samantha Prior, Brendan Delroy, Jennifer Walker, David Ellsworth, Jeff Powell] Aims: Soil biota regulate essential ecosystem processes but our understanding of how soil fertility constrains biotic interactions remains limited. We investigated belowground responses to short-term phosphorus (P) fertilization in a P-limited woodland. Methods: Ten Eucalyptus tereticornis were randomly selected and five fertilized with superphosphate equivalent to 50kg P ha−1 over 6months. We estimated aboveground (understory) and belowground plant biomass, and collected samples for soil chemistry, arbuscular mycorrhizal (AM) root colonization, soil fungal abundance and community composition, and extraction of nematodes and microarthropods. Results: P-fertilization increased root biomass, abundance of non-AM fungi, and abundances of Collembola, and altered fungal community structure, but was associated with a decrease in predatory nematodes. Structural equation modelling indicated that effects on Collembola and fungal abundances were mediated by direct effects of the fertilizer treatment and/or indirect effects via root biomass responses. However, fungal community compositional changes and reductions in predatory nematodes resulted primarily due to fertilization-mediated changes in soil pH. Conclusion: Our study shows that understory plant communities and soil biota are P-limited at the study site but that some biotic groups appear to be more sensitive to changes in soil pH than to increases in P availability. Springer International Publishing Switzerland, 2015 Cumberland plain woodland nationallicence Fungi nationallicence Microarthropods nationallicence Nematoda nationallicence Phosphorus fertilization nationallicence pH nationallicence Nielsen Uffe Hawkesbury Institute for the Environment, University of Western Sydney, Penrith, NSW, Australia aut Prior Samantha Hawkesbury Institute for the Environment, University of Western Sydney, Penrith, NSW, Australia aut Delroy Brendan Hawkesbury Institute for the Environment, University of Western Sydney, Penrith, NSW, Australia aut Walker Jennifer Hawkesbury Institute for the Environment, University of Western Sydney, Penrith, NSW, Australia aut Ellsworth David Hawkesbury Institute for the Environment, University of Western Sydney, Penrith, NSW, Australia aut Powell Jeff Hawkesbury Institute for the Environment, University of Western Sydney, Penrith, NSW, Australia aut Plant and Soil Springer International Publishing 391/1-2(2015-06-01), 321-331 0032-079X 391:1-2<321 2015 391 11104 https://doi.org/10.1007/s11104-015-2432-6 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11104-015-2432-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nielsen Uffe Hawkesbury Institute for the Environment, University of Western Sydney, Penrith, NSW, Australia aut NATIONALLICENCE 700 1- Prior Samantha Hawkesbury Institute for the Environment, University of Western Sydney, Penrith, NSW, Australia aut NATIONALLICENCE 700 1- Delroy Brendan Hawkesbury Institute for the Environment, University of Western Sydney, Penrith, NSW, Australia aut NATIONALLICENCE 700 1- Walker Jennifer Hawkesbury Institute for the Environment, University of Western Sydney, Penrith, NSW, Australia aut NATIONALLICENCE 700 1- Ellsworth David Hawkesbury Institute for the Environment, University of Western Sydney, Penrith, NSW, Australia aut NATIONALLICENCE 700 1- Powell Jeff Hawkesbury Institute for the Environment, University of Western Sydney, Penrith, NSW, Australia aut NATIONALLICENCE 773 0- Plant and Soil Springer International Publishing 391/1-2(2015-06-01), 321-331 0032-079X 391:1-2<321 2015 391 11104