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@ARTICLE{Gottselig:829875,
author = {Gottselig, Nina and Nischwitz, Volker and Meyn, Thomas and
Amelung, Wulf and Bol, Roland and Halle, Cynthia and
Vereecken, Harry and Siemens, Jan and Klumpp, Erwin},
title = {{P}hosphorus {B}inding to {N}anoparticles and {C}olloids in
{F}orest {S}tream {W}aters},
journal = {Vadose zone journal},
volume = {16},
number = {3},
issn = {1539-1663},
address = {Madison, Wis.},
publisher = {SSSA},
reportid = {FZJ-2017-03491},
pages = {0 -},
year = {2017},
abstract = {Elemental contents in catchment headwaters are indicative
of the load of nutrients and minerals cycled or released
from ecosystems, yet little is known about natural colloids
(1–1000 nm) and especially natural nanoparticles (NNP,
1–100 nm) as nutrient carriers in forested headwater
streams. We hypothesize that the majority of P is bound to
NNP in forest streams but that their size and composition
varies for different forested headwater systems. Four
forested sites in Germany and one in Norway, which differ in
total P content, were sampled for stream water and analyzed
for colloids. The samples were fractionated using field flow
fractionation coupled to inductively coupled plasma–mass
spectrometry and an organic C detector. The results showed
that NNP and colloids from all sites could be separated into
three distinct fractions (approximately 1–20 nm, >20–60
nm, and >60 nm). The elemental concentrations of P, organic
C, Al, Si, Fe, and Mn in the fractions differed among the
five sites. However, cluster analysis showed that each
fraction had unique elemental signatures with different
preferential P binding partners. Phosphorus was
preferentially associated with Fe in the smallest size
fraction, with an increasing contribution of
organic-C-associated P as the fraction size increased. The
largest fraction was dominated by clay minerals. Also, the
data indicated that the relative contribution of the NNP and
colloidal fractions for ecosystem nutrient supply rises as
total P concentrations decline. The study highlighted the
still underestimated importance of NNP for matter transport
in forest streams and thus P cycling.},
cin = {IBG-3 / ZEA-3},
ddc = {550},
cid = {I:(DE-Juel1)IBG-3-20101118 / I:(DE-Juel1)ZEA-3-20090406},
pnm = {255 - Terrestrial Systems: From Observation to Prediction
(POF3-255)},
pid = {G:(DE-HGF)POF3-255},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000397092300001},
doi = {10.2136/vzj2016.07.0064},
url = {https://juser.fz-juelich.de/record/829875},
}