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Throughfall enrichment and stream nutrient chemistry in small headwater catchments with different land cover in southern Chile

Pedro Alejandro Hervé Fernández, Carlos E Oyarzún and Stefan Woelfl (2016) HYDROLOGICAL PROCESSES. 30(26). p.4944-4955
abstract
Land cover changes have a great impact on nitrogen (N) and phosphorous (P) fluxes catchments. In this study, we wanted to compare different land covers: deciduous (D), evergreen (E) (both native forests), and exotic Eucalyptus globulus plantation (EP), affected precipitation, and stream discharge on N and P species concentrations and fluxes, under a low deposition climate in south‐central Chile. For this, we collected bulk precipitation, throughfall, and stream water samples after 41 rainfall events in E and EP, during the period June 2009–March 2011, and 31 rainfall events in D, during the period October 2009–March 2011. The highest canopy enrichment of N and P species for throughfall was observed in deciduous forest, while E. globulus showed the minimum enrichment. Total nitrogen (total‐N) discharge in EP was about 8.6 times higher than that of E and D catchments. Total‐N annual retention was positive only in E and D catchments. However, EP catchment showed a net loss (−4.79 kg N ha/year). The biggest difference was observed in nitrate stream concentrations, which showed low values for E (3.4 ± 1.3 μg/L), while EP and D showed higher nitrate concentrations (84.9 ± 16.7 and 134.7 ± 36.7 μg/L, for EP and D, respectively). Total phosphorous (total‐P) discharge flux was low in EP (0.4 kg P ha/year), and negligible in E and D forests (<0.1 kg P ha/year). Total‐P annual retention was near to 1.0 kg N ha/year (on E and D), while a net loss (−1.5 kg N ha/year) was observed for EP. We attribute the observed differences in nutrient throughfall enrichment due to high multi‐stratified canopies in the native forests. Both deciduous and evergreen native forest‐covered catchments showed the highest retention of total‐N and total‐P, in contrast to Eucalyptus‐covered plantation.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
Eucalyptus globulus, evergreen forest, Nothofagus obliqua, nutrient fluxes, southern Chile, EXOTIC PLANTATIONS, FOREST ECOSYSTEMS, RAIN-FOREST, NITROGEN, WATER, RETENTION, MECHANISMS, FLUXES, EUTROPHICATION, LANDSCAPE
journal title
HYDROLOGICAL PROCESSES
Hydrol. Process.
volume
30
issue
26
pages
4944 - 4955
Web of Science type
Article
Web of Science id
000392866700004
JCR category
WATER RESOURCES
JCR impact factor
3.014 (2016)
JCR rank
11/88 (2016)
JCR quartile
1 (2016)
ISSN
0885-6087
DOI
10.1002/hyp.11001
language
English
UGent publication?
yes
classification
U
copyright statement
I have transferred the copyright for this publication to the publisher
id
8521193
handle
http://hdl.handle.net/1854/LU-8521193
date created
2017-05-23 10:32:49
date last changed
2017-08-18 11:21:44
@article{8521193,
  abstract     = {Land cover changes have a great impact on nitrogen (N) and phosphorous (P) fluxes catchments. In this study, we wanted to compare different land covers: deciduous (D), evergreen (E) (both native forests), and exotic Eucalyptus globulus plantation (EP), affected precipitation, and stream discharge on N and P species concentrations and fluxes, under a low deposition climate in south\unmatched{2010}central Chile. For this, we collected bulk precipitation, throughfall, and stream water samples after 41 rainfall events in E and EP, during the period June 2009--March 2011, and 31 rainfall events in D, during the period October 2009--March 2011. The highest canopy enrichment of N and P species for throughfall was observed in deciduous forest, while E. globulus showed the minimum enrichment. Total nitrogen (total\unmatched{2010}N) discharge in EP was about 8.6 times higher than that of E and D catchments. Total\unmatched{2010}N annual retention was positive only in E and D catchments. However, EP catchment showed a net loss (\ensuremath{-}4.79 kg N ha/year). The biggest difference was observed in nitrate stream concentrations, which showed low values for E (3.4 {\textpm} 1.3 \ensuremath{\mu}g/L), while EP and D showed higher nitrate concentrations (84.9 {\textpm} 16.7 and 134.7 {\textpm} 36.7 \ensuremath{\mu}g/L, for EP and D, respectively). Total phosphorous (total\unmatched{2010}P) discharge flux was low in EP (0.4 kg P ha/year), and negligible in E and D forests ({\textlangle}0.1 kg P ha/year). Total\unmatched{2010}P annual retention was near to 1.0 kg N ha/year (on E and D), while a net loss (\ensuremath{-}1.5 kg N ha/year) was observed for EP. We attribute the observed differences in nutrient throughfall enrichment due to high multi\unmatched{2010}stratified canopies in the native forests. Both deciduous and evergreen native forest\unmatched{2010}covered catchments showed the highest retention of total\unmatched{2010}N and total\unmatched{2010}P, in contrast to Eucalyptus\unmatched{2010}covered plantation.},
  author       = {Herv{\'e} Fern{\'a}ndez, Pedro Alejandro and Oyarz{\'u}n, Carlos E and Woelfl, Stefan},
  issn         = {0885-6087},
  journal      = {HYDROLOGICAL PROCESSES},
  keyword      = {Eucalyptus globulus,evergreen forest,Nothofagus obliqua,nutrient fluxes,southern Chile,EXOTIC PLANTATIONS,FOREST ECOSYSTEMS,RAIN-FOREST,NITROGEN,WATER,RETENTION,MECHANISMS,FLUXES,EUTROPHICATION,LANDSCAPE},
  language     = {eng},
  number       = {26},
  pages        = {4944--4955},
  title        = {Throughfall enrichment and stream nutrient chemistry in small headwater catchments with different land cover in southern Chile},
  url          = {http://dx.doi.org/10.1002/hyp.11001},
  volume       = {30},
  year         = {2016},
}

Chicago
Hervé Fernández, Pedro Alejandro, Carlos E Oyarzún, and Stefan Woelfl. 2016. “Throughfall Enrichment and Stream Nutrient Chemistry in Small Headwater Catchments with Different Land Cover in Southern Chile.” Hydrological Processes 30 (26): 4944–4955.
APA
Hervé Fernández, P. A., Oyarzún, C. E., & Woelfl, S. (2016). Throughfall enrichment and stream nutrient chemistry in small headwater catchments with different land cover in southern Chile. HYDROLOGICAL PROCESSES, 30(26), 4944–4955.
Vancouver
1.
Hervé Fernández PA, Oyarzún CE, Woelfl S. Throughfall enrichment and stream nutrient chemistry in small headwater catchments with different land cover in southern Chile. HYDROLOGICAL PROCESSES. 2016;30(26):4944–55.
MLA
Hervé Fernández, Pedro Alejandro, Carlos E Oyarzún, and Stefan Woelfl. “Throughfall Enrichment and Stream Nutrient Chemistry in Small Headwater Catchments with Different Land Cover in Southern Chile.” HYDROLOGICAL PROCESSES 30.26 (2016): 4944–4955. Print.