Soares Costa, RM.; Martinez-Capel, F.; Muñoz Mas, R.; Alcaraz-Hernández, JD.; Garófano-Gómez, V. (2012). Habitat suitability modelling at mesohabitat scale and effects of dam operation on the endangered Júcar nase, Parachondrostoma arrigonis (River Cabriel, Spain). River Research and Applications. 28(6):740-752. doi:10.1002/rra.1598
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/33332
Title:
|
Habitat suitability modelling at mesohabitat scale and effects of dam operation on the endangered Júcar nase, Parachondrostoma arrigonis (River Cabriel, Spain)
|
Author:
|
Soares Costa, Rui Manuel
Martinez-Capel, Francisco
Muñoz Mas, Rafael
Alcaraz-Hernández, Juan Diego
Garófano-Gómez, Virginia
|
UPV Unit:
|
Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres
Universitat Politècnica de València. Departamento de Ingeniería Hidráulica y Medio Ambiente - Departament d'Enginyeria Hidràulica i Medi Ambient
|
Issued date:
|
|
Abstract:
|
Habitat degradation has reduced the complexity of the Mediterranean streams in Spain and contributed to decreasing the historical range of the endangered Júcar nase, Parachondrostoma arrigonis. This species is endemic to ...[+]
Habitat degradation has reduced the complexity of the Mediterranean streams in Spain and contributed to decreasing the historical range of the endangered Júcar nase, Parachondrostoma arrigonis. This species is endemic to the Júcar River Basin (Spain), and most of its populations live in the Cabriel River, which is divided into two segments by the large Contreras Dam. The main objective of this study was to develop a multivariate habitat suitability model (HSM) for this species that can be used to evaluate environmental flows and water management scenarios for the Cabriel River. We first assessed the fish densities (from 2006 to 2008) and compared the habitat characteristics and variability among eight study sites based on the physical characteristics of hydromorphological units (HMUs) or mesohabitats. The abundance of the Júcar nase then was related to the HMU type, and generalized additive models of fish abundance were developed for the sites for both small and large fish. Both models showed acceptable or good performance (adjusted R 2 of 69.4 for small fish and 72.4 for large fish), and fish abundance was used as an indicator of potential habitat quality ['potential nase habitat' (PNH)] for the Júcar nase. The final step was to apply the HSM to evaluate environmentally friendly flow regimens. Hydraulic simulations were used to estimate the PNH under two flow regimen scenarios and in the actual flow regimen for the regulated study site located below the large dam. This article supports the need for new management actions in the Cabriel River, such as implementation of an environmental flow regimen, and illustrates a procedure for the practical application of habitat selection models at the mesohabitat scale.
[-]
|
Subjects:
|
Dam effects
,
Environmental flow regimen
,
GAM
,
Habitat suitability model
,
Hydromorphological units
,
Júcar nase
,
Mediterranean rivers
,
Mesohabitat
,
Cyprinid
,
Dam
,
Ecological impact
,
Endangered species
,
Habitat conservation
,
Habitat quality
,
Modeling
,
River management
,
Jucar River
,
Spain
|
Copyrigths:
|
Reserva de todos los derechos
|
Source:
|
River Research and Applications. (issn:
1535-1459
)
|
DOI:
|
10.1002/rra.1598
|
Publisher:
|
Wiley-Blackwell
|
Publisher version:
|
http://dx.doi.org/10.1002/rra.1598
|
Project ID:
|
Spanish Government (Ministerio de Medio Ambiente y Rural y Marino, Confederacion Hidrografica del Jucar)
Spanish Ministry of Education and Science (POTECOL) [CGL2007-66412]
|
Thanks:
|
This study was partially funded by the Spanish Government (Ministerio de Medio Ambiente y Rural y Marino, Confederacion Hidrografica del Jucar) and partly by the Spanish Ministry of Education and Science (POTECOL, ...[+]
This study was partially funded by the Spanish Government (Ministerio de Medio Ambiente y Rural y Marino, Confederacion Hidrografica del Jucar) and partly by the Spanish Ministry of Education and Science (POTECOL, CGL2007-66412). We especially thank Matias Peredo and Aina Hernandez for the co-operation in the field work and suggestions on data analysis; we also thank Rafa Casas, Marta Bargay, Pau Lucio, Merce Arenas and the students that cooperated in the field work. Thanks to Colin Custard for the academic review of English. We also acknowledge the comments and suggestions of the reviewers on this paper.
[-]
|
Type:
|
Artículo
|