Journal Article

FZJ-2016-06141

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Dissolved and colloidal phosphorus fluxes in forest ecosystems-an almost blind spot in ecosystem research

Bol, R.FZJ* ; Julich, D. ; Brödlin, D. ; Siemens, J. ; Kaiser, K. ; Dippold, M. A. ; Spielvogel, S. ; Zilla, T. ; Mewes, D. ; von Blanckenburg, F. ; Puhlmann, H. ; Holzmann, S. ; Weiler, M. ; Amelung, W.FZJ* ; Lang, F. ; Kuzyakov, Y. ; Feger, K.-H. ; Gottselig, N.FZJ* ; Klumpp, E.FZJ* ; Missong, A.FZJ* ; Winkelmann, C. ; Uhlig, D. ; Sohrt, J. ; von Wilpert, K. ; Wu, B. (Corresponding author)FZJ* ; Hagedorn, F.

2016
Wiley-VCH Weinheim

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Please use a persistent id in citations: http://hdl.handle.net/2128/12779  doi:10.1002/jpln.201600079

Abstract: Understanding and quantification of phosphorus (P) fluxes are key requirements for predictions of future forest ecosystems changes as well as for transferring lessons learned from natural ecosystems to croplands and plantations. This review summarizes and evaluates the recent knowledge on mechanisms, magnitude, and relevance by which dissolved and colloidal inorganic and organic P forms can be translocated within or exported from forest ecosystems. Attention is paid to hydrological pathways of P losses at the soil profile and landscape scales, and the subsequent influence of P on aquatic ecosystems. New (unpublished) data from the German Priority Program 1685 “Ecosystem Nutrition: Forest Strategies for limited Phosphorus Resources” were added to provide up-to-date flux-based information.Nitrogen (N) additions increase the release of water-transportable P forms. Most P found in percolates and pore waters belongs to the so-called dissolved organic P (DOP) fractions, rich in orthophosphate-monoesters and also containing some orthophosphate-diesters. Total solution P concentrations range from ca. 1 to 400 µg P L−1, with large variations among forest stands. Recent sophisticated analyses revealed that large portions of the DOP in forest stream water can comprise natural nanoparticles and fine colloids which under extreme conditions may account for 40–100% of the P losses. Their translocation within preferential flow passes may be rapid, mediated by storm events. The potential total P loss through leaching into subsoils and with streams was found to be less than 50 mg P m−2 a−1, suggesting effects on ecosystems at centennial to millennium scale. All current data are based on selected snapshots only. Quantitative measurements of P fluxes in temperate forest systems are nearly absent in the literature, probably due to main research focus on the C and N cycles. Therefore, we lack complete ecosystem-based assessments of dissolved and colloidal P fluxes within and from temperate forest systems.

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Contributing Institute(s):

1. Agrosphäre (IBG-3)

Research Program(s):

1. 255 - Terrestrial Systems: From Observation to Prediction (POF3-255) (POF3-255)

Appears in the scientific report 2016

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Database coverage:
; ; ; BIOSIS Previews ; Current Contents - Agriculture, Biology and Environmental Sciences ; IF < 5 ; JCR ; NCBI Molecular Biology Database ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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