Response of fish communities in rivers subjected to a high sediment load

Valero, Celia and Alonso González, Carlos and Miguel, Ramón, J. de and Fernández-Delgado, Carlos and García de Jalón Lastra, Diego (2017). Response of fish communities in rivers subjected to a high sediment load. "Limnologica - Ecology and Management of Inland Waters" (n. 62); pp. 142-150. ISSN 0075-9511. https://doi.org/10.1016/j.limno.2016.04.002.

Description

Title: Response of fish communities in rivers subjected to a high sediment load
Author/s:
  • Valero, Celia
  • Alonso González, Carlos
  • Miguel, Ramón, J. de
  • Fernández-Delgado, Carlos
  • García de Jalón Lastra, Diego
Item Type: Article
Título de Revista/Publicación: Limnologica - Ecology and Management of Inland Waters
Date: 2017
ISSN: 0075-9511
Subjects:
Freetext Keywords: Fish species; Olive grove; Sediment impacts; Sediment yield Soil erosion
Faculty: E.T.S.I. Montes, Forestal y del Medio Natural (UPM)
Department: Sistemas y Recursos Naturales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Erosion and sediment yield are a significant problem in the Guadalquivir River basin. Such phenomenaare largely driven by a land use devoted to intensive cultivation of olive trees, with a large socioeconomicinfluence in Andalusia. This sediment overload in rivers causes serious impacts on all fluvial ecosystemcomponents.In this study we assess the chronic effect of sediment yield on fish communities at 104 river sites locatedin two different sub-catchments ? the Bembézar and Guadajoz rivers ? both with different lithologicalcomposition and erosion rates. Sediment yield was estimated using a semi-quantitative Factorial ScoreModel (FSM), developed specifically for Spanish rivers. The fish populations of both basins were evaluatedin composition and abundances by the study of Fernández-Delgado et al., 2014. The influence of sedimentyield on the fish community was analyzed using General Additive Models.The sediment yield was higher in the Guadajoz basin (921 T/Km2 per year) than in Bembézar(701 T/Km2 per year). In the former, fish communities were poorer in both fish density and diversity,with Luciobarbus sclateri as the only substantially present species and a significant relationship betweensediment yield and load, and fish density. In contrast, in the Bembézar basin, sediment yield was cor-related with total fish density, including Luciobarbus sclateri, Pseudochondrostoma willkommii, Cobitispaludica, Iberochondrostoma lemmingii, Anaecypris hispanica, and Cyprinus carpio. Intermediate values ofsediment yield led to maximum densities, while those higher decreased the density of these species.

Funding Projects

TypeCodeAcronymLeaderTitle
FP7282656REFORMUnspecifiedREstoring rivers FOR effective catchment Management

More information

Item ID: 50096
DC Identifier: http://oa.upm.es/50096/
OAI Identifier: oai:oa.upm.es:50096
DOI: 10.1016/j.limno.2016.04.002
Official URL: https://www.sciencedirect.com/science/article/pii/S0075951116301773
Deposited by: Memoria Investigacion
Deposited on: 12 Apr 2018 11:07
Last Modified: 25 Mar 2019 14:01
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