Mark I. A. Yeldham
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View article: Migration Delays at Head-of-Tide Weirs are a Function of Tidal Cycles and River Flows in Anadromous Twaite Shad Alosa fallax
Migration Delays at Head-of-Tide Weirs are a Function of Tidal Cycles and River Flows in Anadromous Twaite Shad Alosa fallax Open
Riverine barriers can have significant negative impacts on the spawning migrations of anadromous fishes, with barriers of low passage efficiency limiting access to upstream spawning areas. Even fish that pass a barrier can be negatively af…
View article: Contrasting responses to riverine barrier modification and fish pass provision in two anadromous non‐salmonid species during their spawning migrations
Contrasting responses to riverine barrier modification and fish pass provision in two anadromous non‐salmonid species during their spawning migrations Open
Anthropogenic in‐river structures represent barriers to migrating fishes. Fish pass designs usually focus on passing anadromous salmonids, and fish pass studies usually focus on site‐scale metrics, failing to consider the wider effects. We…
View article: The winter movements of two fish species in a temperate lowland river
The winter movements of two fish species in a temperate lowland river Open
Winter involves long periods of low water temperatures, with the activities and movements of many temperate fish species being reduced compared with summer. In very cold periods, individuals can become winter quiescent. The extent to which…
View article: Restoration of river connectivity enables long-distance spawning migrations in a potamodromous fish
Restoration of river connectivity enables long-distance spawning migrations in a potamodromous fish Open
Rivers across the world are increasingly fragmented due to anthropogenic barriers, with the restoration of connectivity often using fish passes. Fish passes are, however, usually designed for anadromous species, despite ecologically import…
View article: Variability in the summer movements, habitat use and thermal biology of two fish species in a temperate river
Variability in the summer movements, habitat use and thermal biology of two fish species in a temperate river Open
View article: Emigration of post‐spawned twaite shad <i>Alosa fallax</i>, an anadromous and iteroparous fish, in a highly fragmented river
Emigration of post‐spawned twaite shad <i>Alosa fallax</i>, an anadromous and iteroparous fish, in a highly fragmented river Open
Anthropogenic barriers are widely known to negatively impact the spawning migrations of anadromous fishes, by delaying or preventing passage upstream. Although the impacts of barriers on emigrating post‐spawned adults are less well studied…
View article: Individual repeatability in the timing of river entry indicates the strong influence of photoperiod in the spawning migrations of iteroparous twaite shad Alosa fallax
Individual repeatability in the timing of river entry indicates the strong influence of photoperiod in the spawning migrations of iteroparous twaite shad Alosa fallax Open
The timing of entry into freshwater by mature anadromous fishes is an important component of their migration phenology. In iteroparous anadromous species, identifying the migration cues that influence the timing of entry into freshwater, a…