Johan Watz | Karlstads universitet

Forskning

Ekologi i rinnande vatten. Fokus på fiskars beteendeekologi och bevarandebiologi. Terrestra gastropoder.

Undervisning

Olika kurser inom grundläggande ekologi, zoologi och biostatistik, samt avancerade kurser inom rinnande vattnets ekologi och beteendeekologi.

Publikationer

Do predator odours and warmer winters affect growth of salmonid embryos?
Karl Filipsson, Ann Erlandsson, Larry Greenberg, Martin Österling, Johan Watz, Eva Bergman, 2023
Growth and behaviour of juvenile European eel (Anguilla anguilla) in sandy and stony bottom substrates
Roman Motyka, Olle Calles, Lovisa Lind, Johan Watz, 2023
Growth and mortality of sympatric Atlantic salmon and brown trout fry in fluctuating and stable flows
Louis Addo, Mahboobeh Hajiesmaeili, John Piccolo, Johan Watz, 2023
Increased Temperature and Discharge Influence Overwinter Growth and Survival of Juvenile Salmonids in a Hydropeaking River - Simulating Effects of Climate Change Using Individual-Based Modelling
Johan Watz, Joel Schill, Louis Addo, John Piccolo, Mahboobeh Hajiesmaeili, 2023
Individual-based modelling of hydropeaking effects on brown trout and Atlantic salmon in a regulated river
Mahboobeh Hajiesmaeili, Louis Addo, Johan Watz, Railsback Steven F., John Piccolo, 2023
Infiltrating immune cells in prostate cancer tissue after androgen deprivation and radiotherapy
Ann Erlandsson, Marie Lundholm, Johan Watz, Anders Bergh, Elitsa Petrova, Farhood Alamdari, Thomas Helleday, Sabina Davidsson, Ove Andren, Firas Tarish, 2023
Effects of parasitic freshwater mussels on their host fishes - a review
Sebastian L. Rock, Johan Watz, P. Anders Nilsson, Martin Österling, 2022
Egg production in Arion vulgaris: density dependence in A. vulgaris and interspecific effects of Limax maximus
Johan Watz, Sandra Johansson, Daniel Nyqvist, 2022
Guiding migrating salmonid smolts - Experimentally assessing the performance of angled and inclined screens with varying gap widths
Andrew Harbicht, Johan Watz, D. Nyqvist, Tommy Virmaja, Niclas Carlsson, D. Aldven, P. A. Nilsson, Olle Calles, 2022
Hur mycket vatten behöver havsöringen? En jämförelse av en korrelativ och en individbaserad modell för att förutsäga effekter av flöden på strömlevande fiskar - How much water do sea trout need? A comparison between a correlative and an individual-based model to predict effects of flow on stream fish populations
Johan Watz, Mahboobeh Hajiesmaeili, Louis Addo, Olle Calles, Ola Nordblom, Johan Tielman, John Piccolo, 2022
Interspecific competition among terrestrial slugs
Johan Watz, Daniel Nyqvist, 2022
Artificial barriers against arionid slug movement
Johan Watz, Daniel Nyqvist, 2021
Effects of fragmentation per se on slug movement
Johan Watz, Rolf Lutz Eckstein, Daniel Nyqvist, 2021
The suitability of Hester–Dendy macroinvertebrate samplers in fluctuating flows
Mattias Hansson, Lovisa Lind, Andreas Vernby, Larry Greenberg, Johan Watz, 2021
Social behaviour of European grayling before and after flow peaks in restored and unrestored habitats
Johan Watz, David Alvdén, Antonis Apostolos Brouziotis, Niclas Carlsson, Eirini Karathanou, Kristine Lund Bjørnås, Gustav Lundqvist, Martin Österling, John Piccolo, Olle Calles, 2020
Substrate-size choice in European eel (Anguilla anguilla) elvers is not altered by piscivore chemical cues
Per Anders Nilsson, Ivi J. Pettersson, Carl Tamario, Erik Degerman, Jonas Elghagen, Johan Watz, Olle Calles, 2020
Temperature and predator-mediated regulation of plasma cortisol and brain gene expression in juvenile brown trout (Salmo trutta)
Karl Filipsson, Eva Bergman, Larry Greenberg, Martin Österling, Johan Watz, Ann Erlandsson, 2020
Tracking the movement of PIT-tagged terrestrial slugs (Arion vulgaris) in forest and garden habitats using mobile antennas
Daniel Nygvist, Filippa Hedenberg, Olle Calles, Martin Österling, Ted von Proschwitz, Johan Watz, 2020
Climbing the ladder - an evaluation of three different anguillid eel climbing substrata and placement of upstream passage solutions at migration barriers
Johan Watz, 2019
Coastal river connectivity and the distribution of ascending juvenile European eel (Anguilla anguilla L.) - Implications for conservation strategies regarding fish-passage solutions
Carl Tamario, Olle Calles, Johan Watz, Per Anders Nilsson, Erik Degerman, 2019
Effects of temperature and a piscivorous fish on diel winter behaviour of juvenile brown trout (Salmo trutta)
Karl Filipsson, Eva Bergman, Martin Österling, Ann Erlandsson, Larry Greenberg, Johan Watz, 2019
Future rivers, dams and ecocentrism.
John Piccolo, Richard D. Durtsche, Johan Watz, Martin Österling, Olle Calles, 2019
Occurrence and habitat use of European eel (Anguilla anguilla) in running waters - lessons for improved monitoring, habitat restoration and stocking
Erik Degerman, Carl Tamario, Johan Watz, Per Anders Nilsson, Olle Calles, 2019
Structural complexity in the hatchery rearing environment affects activity, resting metabolic rate and post‐release behaviour in brown trout Salmo trutta
Johan Watz, 2019
Temperature-dependent competition between juvenile salmonids in small streams
Johan Watz, Y. Otsuki, K. Nagatsuka, K. Hasegawa, I. Koizumi, 2019
Brown trout in ice-covered streams: effects of surface ice on anti-predator behavior and habitat use
Johan Watz, 2018
Enhancing upstream passage solutions for juvenile eels - Effects of climbing substrate and ramp placement
Johan Watz, Per Anders Nilsson, Erik Degerman, Carl Tamario, Olle Calles, 2018
Wood addition in the hatchery and river environments affectspost-releaseperformance of overwintering brown trout
Johan Watz, Olle Calles, Niclas Carlsson, Collin Teemu, Ari Huusko, Johnsson Jörgen, Per Anders Nilsson, Johnny Norrgård, Daniel Nyqvist, 2018
Evaluation of a novel mobile floating trap for collecting migrating juvenile eels, Anguilla anguilla, in rivers
Johan Watz, Jonas Elghagen, Per Anders Nilsson, Olle Calles, 2017
Foraging Behaviour of Brown Trout - A Model Species For Linking Individual Ecology to Population Dynamics?
John Piccolo, Johan Watz, 2017
Overwintering behaviour of stocked brown trout - effects of the rearing environment and river habitat complexity
Johan Watz, 2017
Stress responses of juvenile brown trout under winter conditions in a laboratory stream
Johan Watz, 2017
Winter sheltering by juvenile brown trout (Salmo trutta) - Effects of stream wood and an instream ecothermic predator
Åsa Enefalk, Johan Watz, Larry Greenberg, Eva Bergman, 2017
Ice cover affects the growth of a stream-dwelling fish
Johan Watz, Eva Bergman, John Piccolo, Larry Greenberg, 2016
Ice cover alters the behavior and stress level of brown trout Salmo trutta
Johan Watz, Eva Bergman, Olle Calles, Åsa Enefalk, Stina Gustafsson, Anna Hagelin, P. Anders Nilsson, Johnny Norrgård, Daniel Nyqvist, Martin Österling, John J. Piccolo, Lea Dominique Schneider, Larry Greenberg, Bror Jonsson, 2015
Salmonid behaviour under winter conditions
Johan Watz, 2015
Winter Behavior of Brown Trout - The Presence of Ice Cover Influences Activity, Stress and Growth
Johan Watz, Eva Bergman, John J. Piccolo, Larry Greenberg, 2015
Day and night drift-feeding by juvenile salmonids at low water temperatures
Johan Watz, John Piccolo, Eva Bergman, Larry Greenberg, 2014
Effects of ice cover on the behaviour and growth of brown trout
Johan Watz, Eva Bergman, John Piccolo, Larry Greenberg, 2014
Familiarity with a partner facilitates the movementof drift foraging juvenile grayling (Thymallus thymallus) into a new habitatarea
Paul BJ Hart, Eva Bergman, Olle Calles, Stina Eriksson, Stina Gustafsson, Linnea Lans, Johnny R Norrgård, John J Piccolo, Nina Rees, Johan Watz, Martin Österling, Larry Greenberg, 2014
Fish Migration River Monitoring Plan
Olle Calles, Ben Griffioen, Erwin Winter, Johan Watz, Daniel Nyqvist, Anna Hagelin, Stina Gustafsson, Martin Österling, John Piccolo, Larry Greenberg, Eva Bergman, 2014
Prey capture rates of two species of salmonids (Salmo trutta and Thymallus thymallus) in an artificial stream: effects of temperature on their functional response
Johan Watz, Eva Bergman, John Piccolo, Larry Greenberg, 2014
Brown trout responses to ice cover
Johan Watz, 2013
Effects of ice cover on the diel behaviour and ventilation rate of juvenile brown trout
Johan Watz, Eva Bergman, John Piccolo, Larry Greenberg, 2013
Winter behaviour of stream salmonids: effects of temperature, light, and ice cover
Johan Watz, 2013
Temperature-dependent prey capture efficiency and foraging modes of brown trout Salmo trutta
Johan Watz, John J. Piccolo, Larry Greenberg, Eva Bergman, 2012
The role of temperature in the drift-feeding behaviour of juvenile stream salmonids
Johan Watz, Larry Greenberg, John Piccolo, Eva Bergman, 2012
Experimental Data for Drift-Foraging Models - What's New and What's Next
John Piccolo, Johan Watz, Larry Greenberg, 2011
The role of temperature in the prey capture probability of drift-feeding juvenile brown trout (Salmo trutta)
Johan Watz, John J Piccolo, 2011
The role of water temperature in the foraging behaviour of juvenile stream salmonids
Johan Watz, Larry Greenberg, John Piccolo, Eva Bergman, 2011
Manuscript: Temperature and predator-mediated regulation of cortisol and brain gene expression in juvenile brown trout (Salmo trutta)
Karl Filipsson, Eva Bergman, Larry Greenberg, Martin Österling, Johan Watz, Ann Erlandsson,