Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/38260
Título : Variation in stream C, N and P uptake along an altitudinal gradient: a space-for-time analogue to assess potential impacts of climate change
Autor : Martí, Eugènia, Fonollà, P., Von Schiller, D., Sabater, Francesc, Argerich, A., Ribot, Miquel, Riera, Joan L.
Palabras clave : Streams
Pyrenees
Europe
Southern Europe
Iberian Peninsula
Ebro Basin
Spanish Pyrenees
Spain
Hydraulics
Hydrochemistry
Phosphates
Solutes
Stream transport
Thermal regime
Altitude
Biomass
Glycine
Acetate
Nitrates
Ammonium
Drainage basins
Phosphorus
Nitrogen
Carbon
Nutrients
Atmospheric precipitation
Climate change
Fecha de publicación : 2009
Editor: IWA Publishing
Citación : Hydrology research 40(2-3) : 123-137 (2009)
Resumen: A space-for-time substitution approach was used to evaluate potential effects of climate change on stream nutrient uptake by examining the relationship between stream environmental parameters and carbon (C), nitrogen (N) and phosphorus (P) uptake along an altitudinal gradient. The study was carried out in 14 streams located in the Central Pyrenees (NE Spain) draining calcareous catchments that cover an altitudinal range of 700―2,100ma.s.l. In these streams, uptake of inorganic (soluble reactive phosphorus (SRP), ammonium and nitrate) and organic (acetate and glycine) nutrients was estimated. Additionally, several physical, chemical and biological parameters were measured. Results showed higher uptake for both SRP, a potentially limiting nutrient in these streams, and glycine, a labile source of dissolved organic N, than for the rest of the nutrients. Uptake of SRP, nitrate, glycine and acetate varied along stream environmental gradients associated with changes in stream hydromorphology, SRP availability and epilithic biomass. However, these gradients did not vary with altitude. These results indicate that climate change effects on stream nutrient uptake are more likely to be driven by indirect effects on hydromorphology and nutrient availability induced by shifts in the precipitation and run-off regime than by direct modifications in the thermal regime.
Versión del editor: http://cat.inist.fr/?aModele=afficheN&cpsidt=21657657
URI : http://hdl.handle.net/10261/38260
ISSN: 1998-9563
Appears in Collections:(CEAB) Artículos

Files in This Item:
There are no files associated with this item.
Show full item record
 
CSIC SFX LinksSFX Query

Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.