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@ARTICLE{vonBlanckenburg:902416,
      author       = {von Blanckenburg, Friedhelm and Schuessler, Jan A. and
                      Bouchez, Julien and Frings, Patrick J. and Uhlig, David and
                      Oelze, Marcus and Frick, Daniel A. and Hewawasam, Tilak and
                      Dixon, Jeannie and Norton, Kevin},
      title        = {{R}ock weathering and nutrient cycling along an
                      erodosequence},
      journal      = {American journal of science},
      volume       = {321},
      number       = {8},
      issn         = {1945-452X},
      address      = {New York, NY},
      reportid     = {FZJ-2021-04238},
      pages        = {1111 - 1163},
      year         = {2021},
      abstract     = {How flowing water and organisms can shape Earth's surface,
                      the Critical Zone, depends on how fast this layer is turned
                      over by erosion. To quantify the dependence of rock
                      weathering and the cycling of elements through ecosystems on
                      erosion we have used existing and new metrics that quantify
                      the partitioning and cycling of elements between rock,
                      saprolite, soil, plants, and river dissolved and solid
                      loads. We demonstrate their utility at three sites along a
                      global transect of mountain landscapes that differ in
                      erosion rates – an “erodosequence”. These sites are
                      the Swiss Central Alps, a rapidly-eroding, post-glacial
                      mountain belt; the Southern Sierra Nevada, USA, eroding at
                      moderate rates; and the slowly-eroding tropical Highlands of
                      Sri Lanka. The backbone of this analysis is an extensive
                      data set of rock, saprolite, soil, water, and plant
                      geochemical and isotopic data. This set of material
                      properties is converted into process rates by using regolith
                      production and weathering rates from cosmogenic nuclides and
                      river loads, and estimates of biomass growth. Combined,
                      these metrics allow us to derive elemental fluxes through
                      regolith and vegetation. The main findings are: 1) the rates
                      of weathering are set locally in regolith, and not by the
                      rate at which entire landscapes erode; 2) the degree of
                      weathering is mainly controlled by regolith residence time.
                      This results in supply-limited weathering in Sri Lanka where
                      weathering runs to completion in the regolith, and
                      kinetically-limited weathering in the Alps and Sierra Nevada
                      where soluble primary minerals persist; 3) these weathering
                      characteristics are reflected in the sites' ecosystem
                      processes, namely in that nutritive elements are intensely
                      recycled in the supply-limited setting, and directly taken
                      up from soil and rock in the kinetically settings; 4) the
                      weathering rates are not controlled by biomass growth; 5) at
                      all sites we find a deficit in river solute export when
                      compared to solute production in regolith, the extent of
                      which differs between elements. Plant uptake followed by
                      litter export might explain this deficit for biologically
                      utilized elements of high solubility, and rare,
                      high-discharge flushing events for colloidal-bound elements
                      of low solubility. Our data and new metrics have begun to
                      serve for calibrating metal isotope systems in the
                      weathering zone, the isotope ratios of which depend on the
                      flux partitioning between the compartments of the Critical
                      Zone. We demonstrate this application in several isotope
                      geochemical companion papers.},
      cin          = {IBG-3},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {2173 - Agro-biogeosystems: controls, feedbacks and impact
                      (POF4-217)},
      pid          = {G:(DE-HGF)POF4-2173},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000719873400002},
      doi          = {10.2475/08.2021.01},
      url          = {https://juser.fz-juelich.de/record/902416},
}