Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Brown trout thermal niche and climate change: expected changes in the distribution of cold-water fish in central Spain
Year:2015
Research Areas
  • Natural sciences and health sciences,
  • Climate change,
  • Ecology,
  • Aquatic ecology
Information
Abstract
This paper addresses the determination of the realized thermal niche and the effects of climate change on the range distribution of two brown trout populations inhabiting two streams in the Duero River basin (Iberian Peninsula) at the edge of the natural distribution area of this species. For reaching these goals, new methodological developments were applied to improve reliability of forecasts. Water temperature data were collected using 11 thermographs located along the altitudinal gradient, and they were used to model the relationship between stream temperature and air temperature along the river continuum. Trout abundance was studied using electrofishing at 37 sites to determine the current distribution. The RCP4.5 and RCP8.5 change scenarios adopted by the International Panel of Climate Change for its Fifth Assessment Report were used for simulations and local downscaling in this study. We found more reliable results using the daily mean stream temperature than maximum daily temperature and their respective seven days moving-average to determine the distribution thresholds. Thereby, the observed limits of the summer distribution of brown trout were linked to thresholds between 18.1ºC and 18.7ºC. These temperatures characterise a realised thermal niche narrower than the physiological thermal range. In the most unfavourable climate change scenario, the thermal habitat loss of brown trout increased to 38% (Cega stream) and 11% (Pirón stream) in the upstream direction at the end of the century; however, at the Cega stream, the range reduction could reach 56% due to the effect of a ?warm-window? opening in the piedmont reach.
International
Si
JCR
Si
Title
Ecohydrology
ISBN
1936-0584
Impact factor JCR
2,634
Impact info
Datos JCR del año 2013
Volume
pendiente
10.1002/eco.1653
Journal number
pendiente
From page
1
To page
15
Month
SIN MES
Ranking
Participants
  • Autor: Jose Maria Santiago Saez (UPM)
  • Autor: Diego M Garcia de Jalon Lastra (UPM)
  • Autor: Carlos Alonso Gonzalez (UPM)
  • Autor: Joaquin Solana Gutierrez (UPM)
  • Autor: Jaime Rybalaigua Batalla (Fundación para la Investigación del Clima)
  • Autor: Javier Pórtoles (Fundación para la Investigación del Clima)
  • Autor: Robert Monjo (Fundación para la Investigación del Clima)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Hidrobiología
  • Departamento: Ingeniería y Gestión Forestal y Ambiental
  • Departamento: Sistemas y Recursos Naturales
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)