Mgr. Michal Janáč, Ph.D.

Position: post-docs
Research topics: fish sampling methodology
Department: Department of Fish Ecology
Phone: +420 543 422 515
E-mail: janacivb.cz

I am interested in 0+ fish sampling methodology. Main scope of my interest lies in specifying the optimal method and sampling strategy under particular conditions and in the influence of 0+ fish behaviour on efficiency of sampling techniques. My current research activity involves investigations of general fish biology, especially on fish ecology in floodplain areas and ecology of invasive species.

Publications

2012

M. JANÁČ, Z. VALOVÁ, P. JURAJDA: Range expansion and habitat preferences of nonnative 0+ tubenose goby (Proterorhinus semilunaris) in two lowland rivers in the Danube basin, Fundamental and Applied Limnology / Archiv für Hydrobiologie 181 (2012) 73-85.

M. JANÁČ, P. JURAJDA: Diel differences in 0+ fish samples: effect of river size and habitat, River Research and Applications (2012) .

M. POLAČIK, M. JANÁČ, M. VASSILEV, T. TRICHKOVA: Morphometric comparison of native and non-native populations of round goby Neogobius melanostomus from the River Danube, Folia zoologica 61 (2012) 1-8.

2011

M. JANÁČ, P. JURAJDA: Mortality induced by electrofishing and handling in five young-of-the-year cyprinids: effect of the fish size, species and anode size, Journal of Applied Ichthyology 27 (2011) 990-994.

2010

M. JANÁČ, P. JURAJDA: Modified sampling design for age-0 fish electrofishing at beach habitats, North American Journal of Fisheries Management 30 (2010) 1210-1220.

M. JANÁČ, M. ONDRAČKOVÁ, P. JURAJDA, Z. VALOVÁ, M. REICHARD: Flood duration determines the reproduction success of fish in artificial oxbows in a floodplain of a potamal river, Ecology of Freshwater Fish 19 (2010) 644-655.

P. JURAJDA, M. JANÁČ, Z. VALOVÁ, G. STRECK: Fish community in the chronically polluted middle Elbe River, Folia zoologica 59 (2010) 157-168.

P. JURAJDA, Z. ADÁMEK, M. JANÁČ, Z. VALOVÁ: Longitudinal patterns in fish and macrozoobenthos assemblages reflect degradation of water quality and physical habitat in the Bílina river basin, Czech Journal of Animal Science 55 (2010) 123-136.

Z. VALOVÁ, P. JURAJDA, M. JANÁČ, I. BERNARDOVÁ, H. HUDCOVÁ: Spatiotemporal trends of heavy metal concentrations in fish of the River Morava (Danube basin), Journal of Environmental Science and Health Part A-Toxic/Hazardous Substances & Environmental Engineering 45 (2010) 1892-1899.

2009

P. JURAJDA, M. JANÁČ, S.M. WHITE, M. ONDRAČKOVÁ: Small – but not easy: evaluation of sampling methods in floodplain lakes including whole-lake sampling, Fisheries Research 96 (2009) .

M. POLAČIK, M. JANÁČ, P. JURAJDA, Z. ADÁMEK, M. ONDRAČKOVÁ, T. TRICHKOVA, M. VASSILEV: Invasive gobies in the Danube: invasion success facilitated by availability and selection of superior food resources, Ecology of Freshwater Fish 18 (2009) 640-649.

2008

P. LOYKA, Z. ADÁMEK, M. JANÁČ, J. HUML: Nová horní hranice výskytu hrouzka Kesslerova (Gobio kessleri Dybowski, 1862) v řece Moravě (ČR), Bulletin VÚRH Vodňany 44 (2008) 44-47.

M. POLAČIK, M. JANÁČ, T. TRICHKOVA, M. VASSILEV, H. KECKEIS, P. JURAJDA: The distribution and abundance of the Neogobius fishes in their native range (Bulgaria) with notes on the non-native range in the Danube River, Large Rivers 18 (2008) 193-208.

M. POLAČIK, M. JANÁČ, P. JURAJDA, M. VASSILEV, T. TRICHKOVA: The sampling efficiency of electrofishing for Neogobius species in a riprap habitat: a field experiment, Journal of Applied Ichthyology 24 (2008) 601-604.

M. POLAČIK, T. TRICHKOVA, M. JANÁČ, M. VASSILEV, P. JURAJDA: The ichthyofauna of the shoreline zone in the longitudinal profile of the Danube River, Bulgaria, Acta zoologica bulgarica 60 (2008) 77-88.

2007

M. JANÁČ, P. JURAJDA: A comparison of point abundance and continuous sampling by electrofishing for age-0 fish in a channelized lowland river, North American Journal of Fisheries Management 27 (2007) 1119-1125.

P. JURAJDA, Z. ADÁMEK, M. JANÁČ, Z. VALOVÁ: Fish and macrozoobenthos in the Vlára stream drainage area (Bílé Karpaty Mountains), Czech Journal of Animal Science 52 (2007) 214-225.

2006

Z. VALOVÁ, P. JURAJDA, M. JANÁČ: Spatial distribution of 0+ juvenile fish in differently modified lowland rivers, Folia zoologica 55 (2006) 293-308.

2005

M. JANÁČ, P. JURAJDA: Inter-calibration of three electric fishing techniques to estimate 0+ juvenile fish densities on sandy river beaches, Fisheries Management and Ecology 12 (2005) 161-167.

P. JURAJDA, J. ČERNÝ, M. POLAČIK, Z. VALOVÁ, M. JANÁČ, R. BLAŽEK, M. ONDRAČKOVÁ: The recent distribution and abundance of non-native Neogobius fishes in the Slovak section of the River Danube, Journal of Applied Ichthyology 21 (2005) 319-323.


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HOME GENERAL INFORMATION STRUCTURE OF IVB STAFF PUBLICATIONS PROJECTS BOARD OF INSTITUTE SUPERVISORY BOARD FOLIA ZOOLOGICA NEWS PRESS RELEASE CONFERENCE LINKS BIENNIAL REPORT LECTURE HALL	Mgr. Michal Janáč, Ph.D. Position: post-docs Research topics: fish sampling methodology Department: Department of Fish Ecology Phone: +420 543 422 515 E-mail: janacivb.cz I am interested in 0+ fish sampling methodology. Main scope of my interest lies in specifying the optimal method and sampling strategy under particular conditions and in the influence of 0+ fish behaviour on efficiency of sampling techniques. My current research activity involves investigations of general fish biology, especially on fish ecology in floodplain areas and ecology of invasive species. Publications 2012 M. JANÁČ, Z. VALOVÁ, P. JURAJDA: Range expansion and habitat preferences of nonnative 0+ tubenose goby (Proterorhinus semilunaris) in two lowland rivers in the Danube basin, Fundamental and Applied Limnology / Archiv für Hydrobiologie 181 (2012) 73-85. M. JANÁČ, P. JURAJDA: Diel differences in 0+ fish samples: effect of river size and habitat, River Research and Applications (2012) . M. POLAČIK, M. JANÁČ, M. VASSILEV, T. TRICHKOVA: Morphometric comparison of native and non-native populations of round goby Neogobius melanostomus from the River Danube, Folia zoologica 61 (2012) 1-8. 2011 M. JANÁČ, P. JURAJDA: Mortality induced by electrofishing and handling in five young-of-the-year cyprinids: effect of the fish size, species and anode size, Journal of Applied Ichthyology 27 (2011) 990-994. 2010 M. JANÁČ, P. JURAJDA: Modified sampling design for age-0 fish electrofishing at beach habitats, North American Journal of Fisheries Management 30 (2010) 1210-1220. M. JANÁČ, M. ONDRAČKOVÁ, P. JURAJDA, Z. VALOVÁ, M. REICHARD: Flood duration determines the reproduction success of fish in artificial oxbows in a floodplain of a potamal river, Ecology of Freshwater Fish 19 (2010) 644-655. P. JURAJDA, M. JANÁČ, Z. VALOVÁ, G. STRECK: Fish community in the chronically polluted middle Elbe River, Folia zoologica 59 (2010) 157-168. P. JURAJDA, Z. ADÁMEK, M. JANÁČ, Z. VALOVÁ: Longitudinal patterns in fish and macrozoobenthos assemblages reflect degradation of water quality and physical habitat in the Bílina river basin, Czech Journal of Animal Science 55 (2010) 123-136. Z. VALOVÁ, P. JURAJDA, M. JANÁČ, I. BERNARDOVÁ, H. HUDCOVÁ: Spatiotemporal trends of heavy metal concentrations in fish of the River Morava (Danube basin), Journal of Environmental Science and Health Part A-Toxic/Hazardous Substances & Environmental Engineering 45 (2010) 1892-1899. 2009 P. JURAJDA, M. JANÁČ, S.M. WHITE, M. ONDRAČKOVÁ: Small – but not easy: evaluation of sampling methods in floodplain lakes including whole-lake sampling, Fisheries Research 96 (2009) . M. POLAČIK, M. JANÁČ, P. JURAJDA, Z. ADÁMEK, M. ONDRAČKOVÁ, T. TRICHKOVA, M. VASSILEV: Invasive gobies in the Danube: invasion success facilitated by availability and selection of superior food resources, Ecology of Freshwater Fish 18 (2009) 640-649. 2008 P. LOYKA, Z. ADÁMEK, M. JANÁČ, J. HUML: Nová horní hranice výskytu hrouzka Kesslerova (Gobio kessleri Dybowski, 1862) v řece Moravě (ČR), Bulletin VÚRH Vodňany 44 (2008) 44-47. M. POLAČIK, M. JANÁČ, T. TRICHKOVA, M. VASSILEV, H. KECKEIS, P. JURAJDA: The distribution and abundance of the Neogobius fishes in their native range (Bulgaria) with notes on the non-native range in the Danube River, Large Rivers 18 (2008) 193-208. M. POLAČIK, M. JANÁČ, P. JURAJDA, M. VASSILEV, T. TRICHKOVA: The sampling efficiency of electrofishing for Neogobius species in a riprap habitat: a field experiment, Journal of Applied Ichthyology 24 (2008) 601-604. M. POLAČIK, T. TRICHKOVA, M. JANÁČ, M. VASSILEV, P. JURAJDA: The ichthyofauna of the shoreline zone in the longitudinal profile of the Danube River, Bulgaria, Acta zoologica bulgarica 60 (2008) 77-88. 2007 M. JANÁČ, P. JURAJDA: A comparison of point abundance and continuous sampling by electrofishing for age-0 fish in a channelized lowland river, North American Journal of Fisheries Management 27 (2007) 1119-1125. P. JURAJDA, Z. ADÁMEK, M. JANÁČ, Z. VALOVÁ: Fish and macrozoobenthos in the Vlára stream drainage area (Bílé Karpaty Mountains), Czech Journal of Animal Science 52 (2007) 214-225. 2006 Z. VALOVÁ, P. JURAJDA, M. JANÁČ: Spatial distribution of 0+ juvenile fish in differently modified lowland rivers, Folia zoologica 55 (2006) 293-308. 2005 M. JANÁČ, P. JURAJDA: Inter-calibration of three electric fishing techniques to estimate 0+ juvenile fish densities on sandy river beaches, Fisheries Management and Ecology 12 (2005) 161-167. P. JURAJDA, J. ČERNÝ, M. POLAČIK, Z. VALOVÁ, M. JANÁČ, R. BLAŽEK, M. ONDRAČKOVÁ: The recent distribution and abundance of non-native Neogobius fishes in the Slovak section of the River Danube, Journal of Applied Ichthyology 21 (2005) 319-323.