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Deforestation causes increased dissolved silicate losses in the Hubbard Brook Experimental Forest

Conley, Daniel LU ; Likens, Gene E.; Buso, Donald C.; Saccone, Loredana; Bailey, Scott W. and Johnson, Chris E. (2008) In Global Change Biology 14(11). p.2548-2554
Abstract
Globally significant increases in the riverine delivery of nutrients and suspended particulate matter have occurred with deforestation. We report here significant increases in streamwater transport of dissolved silicate (DSi) following experimental forest harvesting at the Hubbard Brook Experimental Forest, NH, USA. The magnitude of the streamwater response varied with the type of disturbance with the highest DSi export fluxes occurring in the manipulations that left the most plant materials on the soil surface and disturbed the soil surface least. No measurable loss of amorphous silica (ASi) was detected from the soil profile; however, ASi was redistributed within the soil profile after forest disturbance. Mass-balance calculations... (More)
Globally significant increases in the riverine delivery of nutrients and suspended particulate matter have occurred with deforestation. We report here significant increases in streamwater transport of dissolved silicate (DSi) following experimental forest harvesting at the Hubbard Brook Experimental Forest, NH, USA. The magnitude of the streamwater response varied with the type of disturbance with the highest DSi export fluxes occurring in the manipulations that left the most plant materials on the soil surface and disturbed the soil surface least. No measurable loss of amorphous silica (ASi) was detected from the soil profile; however, ASi was redistributed within the soil profile after forest disturbance. Mass-balance calculations demonstrate that some fraction of the DSi exported must come from dissolution of ASi and export as DSi. Land clearance and the development of agriculture may result in an enhanced flux of DSi coupled with enhanced erosion losses of ASi contained in phytoliths. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
balance, mass, Hubbard Brook, deforestation, amorphous silica, biogeochemistry, streamwater export
in
Global Change Biology
volume
14
issue
11
pages
2548 - 2554
publisher
Wiley-Blackwell
external identifiers
  • wos:000260307100007
  • scopus:54449086667
ISSN
1354-1013
DOI
10.1111/j.1365-2486.2008.01667.x
language
English
LU publication?
yes
id
bde17c74-984a-4220-88cc-1884506e6143 (old id 1283915)
date added to LUP
2009-02-10 09:50:53
date last changed
2017-10-22 03:39:37
@article{bde17c74-984a-4220-88cc-1884506e6143,
  abstract     = {Globally significant increases in the riverine delivery of nutrients and suspended particulate matter have occurred with deforestation. We report here significant increases in streamwater transport of dissolved silicate (DSi) following experimental forest harvesting at the Hubbard Brook Experimental Forest, NH, USA. The magnitude of the streamwater response varied with the type of disturbance with the highest DSi export fluxes occurring in the manipulations that left the most plant materials on the soil surface and disturbed the soil surface least. No measurable loss of amorphous silica (ASi) was detected from the soil profile; however, ASi was redistributed within the soil profile after forest disturbance. Mass-balance calculations demonstrate that some fraction of the DSi exported must come from dissolution of ASi and export as DSi. Land clearance and the development of agriculture may result in an enhanced flux of DSi coupled with enhanced erosion losses of ASi contained in phytoliths.},
  author       = {Conley, Daniel and Likens, Gene E. and Buso, Donald C. and Saccone, Loredana and Bailey, Scott W. and Johnson, Chris E.},
  issn         = {1354-1013},
  keyword      = {balance,mass,Hubbard Brook,deforestation,amorphous silica,biogeochemistry,streamwater export},
  language     = {eng},
  number       = {11},
  pages        = {2548--2554},
  publisher    = {Wiley-Blackwell},
  series       = {Global Change Biology},
  title        = {Deforestation causes increased dissolved silicate losses in the Hubbard Brook Experimental Forest},
  url          = {http://dx.doi.org/10.1111/j.1365-2486.2008.01667.x},
  volume       = {14},
  year         = {2008},
}