9 Critical unknowns in the cycling of P in forest, grassland and wetland ecosystems
Chair:
Mark Bakker (FR),
Else Bünemann (CH)
Dienstag, 12:10 - Donnerstag, 10:40, H20
Our understanding of P cycling in ecosystems is still limited, mainly due to methodological problems. In this session, we would like to identify critical knowledge gaps in P cycling processes, such as the role of microbial P turnover and soil organic P in plant P uptake, the role of soil structure and the contribution of roots to soil organic P stabilization, forms and quantities of P losses from ecosystems, and others. We welcome presentations on new approaches and analytical techniques to quantify pools and fluxes (isotopes, molecular tools, modelling, element stoichiometry, spectroscopic tools etc.). The session aims to span all levels from the molecular to the ecosystem scale, and to provide recommendations on how to define best possible management practices with minimal inputs and losses of P.
Session key note speaker:
| Reiner Giesler (SE) | Time to re-define available P; hints from molecular approaches and landscape patterns in boreal forests |
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Poster
| P 9.1 | Mark Bakker, David Achat, Laurent Augusto, Anne Gallet-Budynek, Christian Morel Biogeochemistry of P in the southwest of France – case studies from Pinus pinaster forests on sandy soils |
| P 9.2 | Peggy Bierbaß, Martin Kohler, Jürgen Bauhus Variation of P concentrations in growth rings of Norway spruce (Picea abies) as indicators of P availability in forest ecosystems |
| P 9.3 | Petr Capek, Petr Kotas, Stefano Manzoni, Hana Santruckova What is the threshold carbon to phosphorus resource ratio of soil microbial community demand? |
| P 9.4 | Anna Frymark-Szymkowiak, Barbara Kieliszewska-Rokicka Activity of soil phosphatases in the rhizosphere of Populus alba L. in riparian forests |
| P 9.5 | Christine Heuck, Marie Spohn Microbial nutrient limitation, C:N:P stoichiometry and organic phosphorus mineralization in temperate forest soils |
| P 9.6 | Xiaoqian Jiang, Roland Bol, Sabine Willbold, Wulf Amelung, Erwin Klumpp Speciation and quantification of P and Fe (Al) (hydr)oxide associates in particle size fractions of an arable soil |
| P 9.7 | Dorit Julich, Jianhong Liang, Karl-Heinz Feger P transport and accumulation along preferential flow pathways in forest soils |
| P 9.8 | Nina Koele New approaches to study soil P |
| P 9.9 | Friederike Lang, Jürgen Bauhus, Emmanuel Frossard, Klaus Kaiser, Jaane Krüger, Andrea Polle, Jörg Prietzel, Heinz Rennenberg Ecosystem Nutrition: Forest Strategies for limited Phosphorus Resources An introduction to the DFG/SNF Priority Programme 1685 |
| P 9.10 | Anna Missong, Nischwitz Volker, Willbold Sabine, Bol Roland, Klumpp Erwin On the role of colloids and nanoparticles for the distribution of phosphorus in a forest topsoil |
| P 9.11 | Jörg Niederberger, Martin Kohler, Jürgen Bauhus Plant availability of Phosphorus in forest soils - is not soluble not available? |
| P 9.12 | Petr Porcal Phosphorus sorption on photochemically induced particles |
| P 9.13 | Irantzu Primicia, J. Bosco Imbert, Maitane Unzu, Susana García, F. Javier Arricibita, M Carmen Traver, Federico J. Castillo Below-aboveground phosphorus dynamics in a pine-beech Mediterranean forest |
| P 9.14 | Marie Spohn, Tibor Novák, Incze Jozsef, Luise Giani Dynamics of soil phosphorus fractions after land-use abandonment in relation to carbon and nitrogen |
| P 9.15 | Ulrike Talkner Organically bound and microbial phosphorus in the topsoil of 20 European beech (Fagus sylvativa L.) stands in Germany and its potential role in forest phosphorus nutrition |
| P 9.16 | Lin Yu, Salim Belyazid PhosFors – a dynamic numerical model of the phosphorus cycle in forest ecosystems |
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