Physical habitat assessment in the Tajuna river (Spain) by means of the MesoHABSIM approach

Physical habitat was assessed in the Tajuña river (Tagus basin, Spain) by means of the MesoHABSIM approach. Long reaches of the Tajuña river are altered by agricultural use of the riverside. The main impacts are river rectification (straightening), channel entrenchment and incision, and degradation...

Full description

Bibliographic Details
Authors: Gortázar, Javier, Parasiewicz, Piotr, Alonso-González, Carlos, García de Jalón, Diego
Format: article
Publication Date:2011
Country:España
Institution:Universitat Autònoma de Barcelona
Repository:Dipòsit Digital de Documents de la UAB
Language:English
OAI Identifier:oai:ddd.uab.cat:89812
Online Access:https://ddd.uab.cat/record/89812
Access Level:Open access
Keyword:MesoHABSIM
Mesohabitat
Hydromorphologic unit (HMU)
Physical habitat
Restoration
Brown trout
Unidad hidromorfológica (HMU)
Hábitat físico
Restauración
Trucha común
id ES_7e033355f30c59bdd90c452cfe6bb35f
oai_identifier_str oai:ddd.uab.cat:89812
network_acronym_str ES
network_name_str España
repository_id_str
dc.title.none.fl_str_mv Physical habitat assessment in the Tajuna river (Spain) by means of the MesoHABSIM approach
Evaluación del hábitat físico en el río Tajuña (España) mediante la metodología MesoHABSIM
title Physical habitat assessment in the Tajuna river (Spain) by means of the MesoHABSIM approach
spellingShingle Physical habitat assessment in the Tajuna river (Spain) by means of the MesoHABSIM approach
Gortázar, Javier
MesoHABSIM
Mesohabitat
Hydromorphologic unit (HMU)
Physical habitat
Restoration
Brown trout
Unidad hidromorfológica (HMU)
Hábitat físico
Restauración
Trucha común
title_short Physical habitat assessment in the Tajuna river (Spain) by means of the MesoHABSIM approach
title_full Physical habitat assessment in the Tajuna river (Spain) by means of the MesoHABSIM approach
title_fullStr Physical habitat assessment in the Tajuna river (Spain) by means of the MesoHABSIM approach
title_full_unstemmed Physical habitat assessment in the Tajuna river (Spain) by means of the MesoHABSIM approach
title_sort Physical habitat assessment in the Tajuna river (Spain) by means of the MesoHABSIM approach
dc.creator.none.fl_str_mv Gortázar, Javier
Parasiewicz, Piotr
Alonso-González, Carlos
García de Jalón, Diego
author Gortázar, Javier
author_facet Gortázar, Javier
Parasiewicz, Piotr
Alonso-González, Carlos
García de Jalón, Diego
author_role author
author2 Parasiewicz, Piotr
Alonso-González, Carlos
García de Jalón, Diego
author2_role author
author
author
dc.subject.none.fl_str_mv MesoHABSIM
Mesohabitat
Hydromorphologic unit (HMU)
Physical habitat
Restoration
Brown trout
Unidad hidromorfológica (HMU)
Hábitat físico
Restauración
Trucha común
topic MesoHABSIM
Mesohabitat
Hydromorphologic unit (HMU)
Physical habitat
Restoration
Brown trout
Unidad hidromorfológica (HMU)
Hábitat físico
Restauración
Trucha común
description Physical habitat was assessed in the Tajuña river (Tagus basin, Spain) by means of the MesoHABSIM approach. Long reaches of the Tajuña river are altered by agricultural use of the riverside. The main impacts are river rectification (straightening), channel entrenchment and incision, and degradation of riparian vegetation, along with important flow depletion and regulation. To our knowledge, this is the first application in Spain of MesoHABSIM, which is a physical habitat model based on the identification of habitat attributes - depth, water velocity, substrate, types of hydromorphologic units (HMU), and types of cover - on the mesohabitat scale. The river was stratified into 16 segments with similar habitat characteristics. Mesohabitats were mapped in one representative site (1-2 km long) within each segment to provide a hydromorphologic model of the river. Biological models were developed for fry, juvenile, and adult brown trout. To do this, preliminary models were generated based on literature about trout habitat requirements, and then they were calibrated with electrofishing data. These models were applied to the hydromorphologic model of the river to quantify the available habitat for brown trout in the current conditions. Finally, restoration action was designed to decrease channel entrenchment, increase river sinuosity, and recover its riparian vegetation. The physical changes after restoration were estimated by expert opinion, and the quantification of the available habitat was done with MesoHABSIM at each site. These results can be used to select the segments that are the best candidates for restoration.
publishDate 2011
dc.date.none.fl_str_mv 2
2011-01-01
2011
2011-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/89812
url https://ddd.uab.cat/record/89812
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://rightsstatements.org/vocab/InC/1.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://rightsstatements.org/vocab/InC/1.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869411706182041600
spelling Physical habitat assessment in the Tajuna river (Spain) by means of the MesoHABSIM approachEvaluación del hábitat físico en el río Tajuña (España) mediante la metodología MesoHABSIMGortázar, JavierParasiewicz, PiotrAlonso-González, CarlosGarcía de Jalón, DiegoMesoHABSIMMesohabitatHydromorphologic unit (HMU)Physical habitatRestorationBrown troutUnidad hidromorfológica (HMU)Hábitat físicoRestauraciónTrucha comúnPhysical habitat was assessed in the Tajuña river (Tagus basin, Spain) by means of the MesoHABSIM approach. Long reaches of the Tajuña river are altered by agricultural use of the riverside. The main impacts are river rectification (straightening), channel entrenchment and incision, and degradation of riparian vegetation, along with important flow depletion and regulation. To our knowledge, this is the first application in Spain of MesoHABSIM, which is a physical habitat model based on the identification of habitat attributes - depth, water velocity, substrate, types of hydromorphologic units (HMU), and types of cover - on the mesohabitat scale. The river was stratified into 16 segments with similar habitat characteristics. Mesohabitats were mapped in one representative site (1-2 km long) within each segment to provide a hydromorphologic model of the river. Biological models were developed for fry, juvenile, and adult brown trout. To do this, preliminary models were generated based on literature about trout habitat requirements, and then they were calibrated with electrofishing data. These models were applied to the hydromorphologic model of the river to quantify the available habitat for brown trout in the current conditions. Finally, restoration action was designed to decrease channel entrenchment, increase river sinuosity, and recover its riparian vegetation. The physical changes after restoration were estimated by expert opinion, and the quantification of the available habitat was done with MesoHABSIM at each site. These results can be used to select the segments that are the best candidates for restoration.Se ha evaluado el hábitat físico en el río Tajuña (cuenca del Tajo, España) mediante la metodología MesoHABSIM. Una parte importante del río Tajuña está alterada por los usos agrícolas de las riberas. Los principales impactos son la rectificación, el encajonamiento e incisión del cauce, y la degradación de la vegetación riparia, junto con una importante extracción y regulación del caudal. Hasta donde conocemos, ésta es la primera aplicación de MesoHABSIM en España. Se trata de un modelo de hábitat físico, basado en la identificación de los atributos del h'abitat -profundidad, velocidad del agua, sustrato, tipo de unidad hidromorfológica (HMU) y tipo de cobertura o refugio- en la escala del mesohábitat. Se estratificó el río en 16 segmentos con características similares de hábitat. En cada segmento se muestrearon los mesohábitats en un tramo representativo de 1-2 km de largo, construyendo así un modelo hidromorfológico del río. Se generaron modelos biológicos para alevines, juveniles y adultos de trucha común. Para ello, se construyeron unos modelos preliminares a partir de bibliografía acerca de los requerimientos de hábitat de la trucha, y después se calibraron con datos obtenidos mediante pesca eléctrica. Estos modelos fueron aplicados al modelo hidromorfológico para cuantificar el hábitat disponible para la trucha común en las condiciones actuales. Finalmente se diseño una acción de restauración con el objetivo de disminuir el encajonamiento del cauce, aumentar su sinuosidad y recuperar su vegetación riparia. Los cambios tras la restauración se estimaron por opinión de experto, y la evaluación del hábitat resultante se realizó mediante MesoHABSIM. Estos resultados pueden emplearse para elegir los segmentos más apropiados para realizar la restauración propuesta. 22011-01-0120112011-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/89812reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengopen accesshttp://purl.org/coar/access_right/c_abf2Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.https://rightsstatements.org/vocab/InC/1.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:898122026-06-06T12:50:31Z
score 15.301603

Similar Items