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Título
Upstream migration of anadromous and potamodromous brown trout: patterns and triggers in a 25-year overview
Autor
Año del Documento
2021
Editorial
Springer
Descripción
Producción Científica
Documento Fuente
Hydrobiologia, 2021, vol. 849, p. 197-213
Resumen
River fragmentation and alterations in
flow and thermal regimes are the main stressors
affecting migrating fish, which could be aggravated by
climate change and increasing water demand. To
assess these impacts and define mitigation measures, it
is vital to understand fish movement patterns and the
environmental variables affecting them. This study
presents a long-term (1995–2019) analysis of
upstream migration patterns of anadromous and
potamodromous brown trout in the lower River
Bidasoa (Spain). For this, captures in a monitoring
station were analyzed using Survival Analysis and
Random Forest techniques. Results showed that most
upstream movements of potamodromous trout
occurred in October–December, whereas in June–July
for anadromous trout, although with differences
regarding sex and size. Both, fish numbers and dates
varied over time and were related to the environmental
conditions, with different influence on each ecotype.
The information provided from comparative studies
can be used as a basis to develop adaptive management
strategies to ensure freshwater species conservation.
Moreover, studies in the southern distribution range
can be crucial under climate warming scenarios, where
species are expected to shift coldwards.
Materias Unesco
31 Ciencias Agrarias
Palabras Clave
Salmo trutta
Sea trout
Riverine trout
Fish migration
ISSN
0018-8158
Revisión por pares
SI
Patrocinador
Proyecto de innovación docente de la Universidad de Valladolid (PIF-UVa 2017)
Ministerio de Ciencia, Innovación y Universidades (grant PTQ2018-010162)
Publicación en abierto financiada por el Consorcio de Bibliotecas Universitarias de Castilla y León (BUCLE), con cargo al Programa Operativo 2014ES16RFOP009 FEDER 2014-2020 DE CASTILLA Y LEÓN, Actuación:20007-CL - Apoyo Consorcio BUCLE
Ministerio de Ciencia, Innovación y Universidades (grant PTQ2018-010162)
Publicación en abierto financiada por el Consorcio de Bibliotecas Universitarias de Castilla y León (BUCLE), con cargo al Programa Operativo 2014ES16RFOP009 FEDER 2014-2020 DE CASTILLA Y LEÓN, Actuación:20007-CL - Apoyo Consorcio BUCLE
Version del Editor
Propietario de los Derechos
© 2021 The Authors
Idioma
eng
Tipo de versión
info:eu-repo/semantics/publishedVersion
Derechos
openAccess
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