YAPS

Predicting aquatic animal movements and behavioural states from acoustic telemetry arrays

1. Fine-scale tracking with passive acoustic telemetry can yield great insights into the movement ecology of aquatic animals. To predict fine-scale positions of tagged animals in continuous space from spatially-discrete detection data, state-space …

Validation of a Swimming Direction Model for the Downstream Migration of Atlantic Salmon Smolts

Fish swimming performance is strongly influenced by flow hydrodynamics, but little is known about the relation between fine‐scale fish movements and hydrodynamics based on in‐situ investigations. In the presented study, we validated the …

Can Energy Depletion of Wild Atlantic Salmon Kelts Negotiating Hydropower Facilities Lead to Reduced Survival?

Repeat spawners constitute an important component of Atlantic salmon populations, but survival of post-spawning individuals (kelts) are often compromised by anthropogenic structures such as hydropower plants (HPPs). Potential effects of HPPs include …

The effects of hydrodynamics on the three-dimensional downstream migratory movement of Atlantic salmon

Anthropogenic structures in rivers are major threats for fish migration and effective mitigation is imperative given the worldwide expansion of such structures. Fish behaviour is strongly influenced by hydrodynamics, but little is known on the relation …

Modelling mitigation measures for smolt migration at dammed river sections

There is no generic solution to establish safe passage of downstream‐migrating fish passed hydropower facilities, and mitigation measures are species and site specific. Development of solutions is thus often based on “trial and error,” and …

Positioning of aquatic animals based on time-of-arrival and random walk models using YAPS (Yet Another Positioning Solver)

Aquatic positional telemetry offers vast opportunities to study in vivo behaviour of wild animals, but there is room for improvement in the data quality provided by current procedures for estimating positions. Here we present a novel positioning …

YAPS - Yet Another Positioning Solver

Open-Source fine-scale 2D/3D positioning of aquatic animals