Organic Phosphorus 2013 - Integration across ecosystems

Detailed Program

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Monday 4 February 2013

8:40–8:50: Ben Turner, Smithsonian Tropical Research Institute, Panama
Welcome and introduction

Session 1: Controls on the amounts and forms of soil organic phosphorus

8:50–9:10 David Nash, Victorian Department of Primary Industries, Australia
A meta-analysis of climate and soil effects on forms of soil organic phosphorus

9:10–9:30 Martin Blackwell, Rothamsted Research, UK
Isolating the influence of pH on the amounts and forms of soil organic phosphorus

9:30–9:50 Andrea Vincent, Swedish University of Agricultural Sciences
Speciation of soil organic phosphorus in tropical and boreal forests: effects of litterfall, metals, and time

9:50–10:10 Charlotte Jørgensen, University of Southern Denmark
Binding sites for inositol phosphates in soil and effects on their mobility

10:10–10:40 Coffee break

Session 2: Stability and bioavailability of organic phosphorus in soil

10:40–11:00 Luisella Celi, Università di Torino, Italy
Role of iron oxides in the fate of inositol phosphates in soil

11:00–11:20 Reiner Giesler, Umeå University, Sweden
Approaching near-surface processes in studying organic phosphorus

11:20–11:40 Tegan Darch, Rothamsted Research, UK
Using plant exudates and enzyme hydrolysis to determine plant available phosphorus in tropical soils

11:40–12:00 Courtney Giles, University of Vermont, USA
The role of plant and bacterial organic anion production in plant access to insoluble organic phosphorus

12:00–13:10 Lunch

Session 3: Organic phosphorus in agroecosystems

13:10–13:30 Leo Condron, Lincoln University, New Zealand
Soil organic phosphorus mineralization in managed grassland and forest ecosystems

13:30–13:50 Tandra Fraser, University of Guelph, Canada
Soil phosphorus turnover in long-term organic and conventional management systems

13:50–14:10 Yuki Audette, University of Guelph, Canada
Effect of animal manure composts on soil phosphorus chemistry

14:10–14:30 William Roberts, Lancaster University, UK
Organic phosphorus retention in riparian vegetated buffer strip soils

14:30–16:00 Posters and coffee (see page 8 for a list of poster presentations)

Session 4: Forms and dynamics of organic phosphorus in wetlands

16:00–16:20 Alexander Cheesman, Smithsonian Tropical Research Institute, Panama
Organic phosphorus forms and composition in palustrine wetland soils

16:20–16:40 Susan Newman, South Florida Water Management District, USA
Phosphorus transformations in emergent and submersed macrophyte dominated wetlands

16:40–17:00 William Cooper, Florida State University, USA
Linking phosphorus sequestration to carbon humification in wetland soils

17:00–18:00 Drinks

Tuesday 5 February 2013

8:40–8:50 Ben Turner, Smithsonian Tropical Research Institute
Introduction and BCI logistics

Session 5: Microbes, genes, and organic phosphorus acquisition

8:50–9:10 Else Bünemann, ETH Zurich, Switzerland
The role of microbial processes in soil phosphorus cycling: approaches and outcomes

9:10–9:30 Milko Jorquera, Universidad de La Frontera, Chile
Bacillus β-propeller phytase genes in pasture rhizosphere and volcanic soils from southern Chile

9:30–9:50 Elise Morrison, University of Florida, USA
The composition and abundance of phosphorus-utilizing genes within Everglades microbial communities

9:50–10:10 Curt Richardson, Duke University, USA
Differential nutrient limitation of soil microbes across ecosystems: Does phosphorus really matter?

10:10–10:40 Coffee

Session 6: Phosphorus and tropical forest productivity

10:40–11:00 Xiaojuan Yang, Oak Ridge National Laboratory, USA
Modeling phosphorus dynamics and phosphorus limitation on productivity in tropical forests

11:00–11:20 Kasper Reitzel, University of Southern Denmark
Soil solution organic and condensed inorganic phosphorus in lowland tropical forests

Session 7: Organic phosphorus in the marine environment

11:20–11:40 Adina Paytan, University of California Santa Cruz, USA
Oxygen isotope of phosphate as an indicator of organic phosphorus utilization in the ocean

11:40–12:00 Jason Chin, The Queen’s University of Belfast, UK
Phosphate insensitive aminoalkylphosphonate degradation in marine environments

12:00–13:10 Lunch

Session 8: Organic phosphorus in freshwater ecosystems

13:10–13:30 Barbara Cade-Menun, Agriculture and Agri-Food Canada
Characterizing dissolved and particulate phosphorus forms in runoff from agricultural lands

13:30–13:50 Julia Paraskova, Uppsala University, Sweden
Can phospholipids and nucleic acids shed light on organic phosphorus turnover in lake sediment?

13:50–14:10 Philip Haygarth, Lancaster University, UK
Organic phosphorus compounds in riverbed sediment from source to estuary

14:10–14:40 Coffee

Session 9: Phosphorus in sewage and wastewater

14:40–15:00 Will Brownlie, NERC Centre for Ecology and Hydrology, UK
The impact of human domestic behavior on phosphorus compounds in private sewage systems in the Loch Leven catchment (Scotland, UK)

15:00–15:20 Darragh Hobbs, The Queen’s University of Belfast, UK
Can environmental stress be exploited for enhanced biological phosphorus removal?

15:20–15:40 Bryan Spears, NERC Centre for Ecology and Hydrology, UK
Assessing the impact of a rural development policy on the phosphorus load from septic tanks to the Loch Leven catchment (Scotland, UK)

16:00 Depart for Barro Colorado Island

Poster Presentations

Poster 1: Soil phosphorus forms and distribution determined by 31P NMR spectroscopy
influenced by tillage practices
Dalel Abdi, Université Laval, Canada

Poster 2: Isolation of phytase-producing rhizobacteria from different natural ecosystems and agro-ecosystems of northern, central and southern Chile
Jacquelinne Acuña, Universidad de La Frontera, Chile

Poster 3: Soil phosphorus fertility under organic nutrient management
Yuki Audette, University of Guelph, Canada

Poster 4: Delays, degrees and degradation: Evaluating the effects of experimental parameters on 31P NMR results
Barbara Cade-Menun, Agriculture and Agri-Food Canada

Poster 5: Improved peak identification in 31P NMR spectra with a standardized method and peak library
Barbara Cade-Menun, Agriculture and Agri-Food Canada

Poster 6: Improving bioavailability of phosphorus from cattle dung by using phosphatase immobilized on natural clay and nanoclay
Marcela Calabi-Floody, Universidad de La Frontera, Chile

Poster 7: A new solution 31P NMR extraction procedure for sediment samples with low phosphorus content
Delphine Defforey, University of California Santa Cruz, USA

Poster 8: Changes in soil organic phosphorus and their relationship with nutrient limitation in Chilean temperate forests
Aurora Gaxiola, Institute of Ecology and Biodiversity and Pontificia Universidad Católica de Chile

Poster 9: Characterization of particulate phosphorus in a hydrologic transect of the Lake
Champlain Basin, Vermont, USA: phosphorus species analysis and enzyme lability
Courtney Giles, University of Vermont, USA

Poster 10: Phosphorus lability and speciation in two agricultural soils by sequential fractionation, solution 31P NMR, and phosphorus K-edge XANES spectroscopy
Jin Liu, Zhejiang University, China
(presented by Barbara Cade-Menun, Agriculture and Agri-Food Canada)

Poster 11: Distribution and hydrolyzability of organic phosphorus in aggregates of highly weathered tropical soils
M. Nesper, ETH Zurich, Switzerland
(presented by Else Bünemann, ETH Zurich, Switzerland)

Poster 12: Linking soil partitioning, crop acquisition and compositions of novel phosphorus fertilizers to improve phosphorus resource management
Marc Stutter, The James Hutton Institute, UK
(presented by Martin Blackwell, Rothamsted Research, UK)

Poster 13: Contribution of recalcitrant phosphorus to phosphorus fractionation in an Andisol
Gabriela Velásquez, Universidad de La Frontera, Chile

Poster 14: Fate and transport of phosphorus compounds in the River Eden, UK
Ying Wang, Lancaster University, UK