Generalized additive and fuzzy models in environmental flow assessment: A comparison employing the West Balkan trout (Salmo farioides

Human activities have altered flow regimes resulting in increased pressures and threats on river biota. Physical habitat simulation has been established as a standard approach among the methods for Environmental Flow Assessment (EFA). Traditionally, in EFA, univariate habitat suitability curves have...

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Autores: Muñoz Mas, Rafael, Papadaki, Christina, Zogaris, Stamatis, Ntoanidis, Lazaros, Dimitriou, Elias, Martinez-Capel, Francisco|||0000-0003-4991-0251
Tipo de recurso: artículo
Fecha de publicación:2016
País:España
Institución:Universitat Politècnica de València (UPV)
Repositorio:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglés
OAI Identifier:oai:riunet.upv.es:10251/78655
Acceso en línea:https://riunet.upv.es/handle/10251/78655
Access Level:acceso abierto
Palabra clave:Fuzzy kappa
Habitat suitability
Microhabitat
Physical habitat simulation
Salmo farioides
Takagi-Sugeno-Kang fuzzy models
TECNOLOGIA DEL MEDIO AMBIENTE
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network_name_str España
repository_id_str
dc.title.none.fl_str_mv Generalized additive and fuzzy models in environmental flow assessment: A comparison employing the West Balkan trout (Salmo farioides
Karaman, 1938)
title Generalized additive and fuzzy models in environmental flow assessment: A comparison employing the West Balkan trout (Salmo farioides
spellingShingle Generalized additive and fuzzy models in environmental flow assessment: A comparison employing the West Balkan trout (Salmo farioides
Muñoz Mas, Rafael
Fuzzy kappa
Habitat suitability
Microhabitat
Physical habitat simulation
Salmo farioides
Takagi-Sugeno-Kang fuzzy models
TECNOLOGIA DEL MEDIO AMBIENTE
title_short Generalized additive and fuzzy models in environmental flow assessment: A comparison employing the West Balkan trout (Salmo farioides
title_full Generalized additive and fuzzy models in environmental flow assessment: A comparison employing the West Balkan trout (Salmo farioides
title_fullStr Generalized additive and fuzzy models in environmental flow assessment: A comparison employing the West Balkan trout (Salmo farioides
title_full_unstemmed Generalized additive and fuzzy models in environmental flow assessment: A comparison employing the West Balkan trout (Salmo farioides
title_sort Generalized additive and fuzzy models in environmental flow assessment: A comparison employing the West Balkan trout (Salmo farioides
dc.creator.none.fl_str_mv Muñoz Mas, Rafael
Papadaki, Christina
Zogaris, Stamatis
Ntoanidis, Lazaros
Dimitriou, Elias
Martinez-Capel, Francisco|||0000-0003-4991-0251
author Muñoz Mas, Rafael
author_facet Muñoz Mas, Rafael
Papadaki, Christina
Zogaris, Stamatis
Ntoanidis, Lazaros
Dimitriou, Elias
Martinez-Capel, Francisco|||0000-0003-4991-0251
author_role author
author2 Papadaki, Christina
Zogaris, Stamatis
Ntoanidis, Lazaros
Dimitriou, Elias
Martinez-Capel, Francisco|||0000-0003-4991-0251
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Departamento de Ingeniería Hidráulica y Medio Ambiente
Escuela Politécnica Superior de Gandia
Instituto de Investigación para la Gestión Integrada de Zonas Costeras
Ministry of Education, Lifelong Learning and Religious Affairs of the Hellenic Republic
Repositorio Institucional de la Universitat Politècnica de València Riunet
dc.subject.none.fl_str_mv Fuzzy kappa
Habitat suitability
Microhabitat
Physical habitat simulation
Salmo farioides
Takagi-Sugeno-Kang fuzzy models
TECNOLOGIA DEL MEDIO AMBIENTE
topic Fuzzy kappa
Habitat suitability
Microhabitat
Physical habitat simulation
Salmo farioides
Takagi-Sugeno-Kang fuzzy models
TECNOLOGIA DEL MEDIO AMBIENTE
description Human activities have altered flow regimes resulting in increased pressures and threats on river biota. Physical habitat simulation has been established as a standard approach among the methods for Environmental Flow Assessment (EFA). Traditionally, in EFA, univariate habitat suitability curves have been used to evaluate the habitat suitability at the microhabitat scale whereas Generalized Additive Models (GAMs) and fuzzy logic are considered the most common multivariate approaches to do so. The assessment of the habitat suitability for three size classes of the West Balkan trout (Salmo farioides; Karaman, 1938) inferred with these multivariate approaches was compared at three different levels. First the modelled patterns of habitat selection were compared by developing partial dependence plots. Then, the habitat assessment was spatially explicitly compared by calculating the fuzzy kappa statistic and finally, the habitat quantity and quality was compared broadly and at relevant flows under a hypothetical flow regulation, based on the Weighted Usable Area (WUA) vs. flow curves. The GAMs were slightly more accurate and the WUA-flow curves demonstrated that they were more optimistic in the habitat assessment with larger areas assessed with low to intermediate suitability (0.2 0.6). Nevertheless, both approaches coincided in the habitat assessment (the optimal areas were spatially coincident) and in the modelled patterns of habitat selection; large trout selected microhabitats with low flow velocity, large depth, coarse substrate and abundant cover. Medium sized trout selected microhabitats with low flow velocity, middle-to-large depth, any kind of substrate but bedrock and some elements of cover. Finally small trout selected microhabitats with low flow velocity, small depth, and light cover only avoiding bedrock substrate. Furthermore, both approaches also rendered similar WUA-flow curves and coincided in the predicted increases and decreases of the WUA under the hypothetical flow regulation. Although on an equal footing, GAMs performed slightly better, they do not automatically account for variables interactions. Conversely, fuzzy models do so and can be easily modified by experts to include new insights or to cover a wider range of environmental conditions. Therefore, as a consequence of the agreement between both approaches, we would advocate for combinations of GAMs and fuzzy models in fish-based EFA.
publishDate 2016
dc.date.none.fl_str_mv 2016
2016-06-01
dc.type.none.fl_str_mv journal 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://riunet.upv.es/handle/10251/78655
url https://riunet.upv.es/handle/10251/78655
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Ministry of Education, Lifelong Learning and Religious Affairs of the Hellenic Republic https://doi.org/10.13039/501100006409 GSRI Fish habitat use and ecological flows in Greece
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reserva de todos los derechos
http://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
Reserva de todos los derechos
http://rightsstatements.org/vocab/InC/1.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
instname:Universitat Politècnica de València (UPV)
instname_str Universitat Politècnica de València (UPV)
reponame_str RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
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spelling Generalized additive and fuzzy models in environmental flow assessment: A comparison employing the West Balkan trout (Salmo farioidesKaraman, 1938)Muñoz Mas, RafaelPapadaki, ChristinaZogaris, StamatisNtoanidis, LazarosDimitriou, EliasMartinez-Capel, Francisco|||0000-0003-4991-0251Fuzzy kappaHabitat suitabilityMicrohabitatPhysical habitat simulationSalmo farioidesTakagi-Sugeno-Kang fuzzy modelsTECNOLOGIA DEL MEDIO AMBIENTEHuman activities have altered flow regimes resulting in increased pressures and threats on river biota. Physical habitat simulation has been established as a standard approach among the methods for Environmental Flow Assessment (EFA). Traditionally, in EFA, univariate habitat suitability curves have been used to evaluate the habitat suitability at the microhabitat scale whereas Generalized Additive Models (GAMs) and fuzzy logic are considered the most common multivariate approaches to do so. The assessment of the habitat suitability for three size classes of the West Balkan trout (Salmo farioides; Karaman, 1938) inferred with these multivariate approaches was compared at three different levels. First the modelled patterns of habitat selection were compared by developing partial dependence plots. Then, the habitat assessment was spatially explicitly compared by calculating the fuzzy kappa statistic and finally, the habitat quantity and quality was compared broadly and at relevant flows under a hypothetical flow regulation, based on the Weighted Usable Area (WUA) vs. flow curves. The GAMs were slightly more accurate and the WUA-flow curves demonstrated that they were more optimistic in the habitat assessment with larger areas assessed with low to intermediate suitability (0.2 0.6). Nevertheless, both approaches coincided in the habitat assessment (the optimal areas were spatially coincident) and in the modelled patterns of habitat selection; large trout selected microhabitats with low flow velocity, large depth, coarse substrate and abundant cover. Medium sized trout selected microhabitats with low flow velocity, middle-to-large depth, any kind of substrate but bedrock and some elements of cover. Finally small trout selected microhabitats with low flow velocity, small depth, and light cover only avoiding bedrock substrate. Furthermore, both approaches also rendered similar WUA-flow curves and coincided in the predicted increases and decreases of the WUA under the hypothetical flow regulation. Although on an equal footing, GAMs performed slightly better, they do not automatically account for variables interactions. Conversely, fuzzy models do so and can be easily modified by experts to include new insights or to cover a wider range of environmental conditions. Therefore, as a consequence of the agreement between both approaches, we would advocate for combinations of GAMs and fuzzy models in fish-based EFA.This study was supported by the ECOFLOW project funded by the Hellenic General Secretariat of Research and Technology in the framework of the NSRF 2007-2013. We are grateful for field assistance of Dimitris Kommatas, Orfeas Triantafillou and Martin Palt and to Alcibiades N. Economou for assistance in discussions on trout biology and ecology.ElsevierDepartamento de Ingeniería Hidráulica y Medio AmbienteEscuela Politécnica Superior de GandiaInstituto de Investigación para la Gestión Integrada de Zonas CosterasMinistry of Education, Lifelong Learning and Religious Affairs of the Hellenic RepublicRepositorio Institucional de la Universitat Politècnica de València Riunet20162016-06-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttps://riunet.upv.es/handle/10251/78655reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)InglésengMinistry of Education, Lifelong Learning and Religious Affairs of the Hellenic Republic https://doi.org/10.13039/501100006409 GSRI Fish habitat use and ecological flows in Greeceopen accesshttp://purl.org/coar/access_right/c_abf2Reserva de todos los derechoshttp://rightsstatements.org/vocab/InC/1.0/info:eu-repo/semantics/openAccessoai:riunet.upv.es:10251/786552026-06-13T07:49:27Z
score 15.301629

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