Ichthyofauna of the Brdy Protected Landscape Area in Central Bohemia

Bc. Anežka Ťuláková

Diplomová práce

Abstract:

The Brdy Protected Landscape Area is situated in the former military area of Brdy in the central part of Czech Republic. The aim of the thesis was to determine the fish species diversity, fish abundance, fish biomass, age structure of selected species from fish scales in the context of different environmental and anthropogenic variables in the Brdy Protected Landscape Area. Particularly, investigation was focused on questions how fish abundance, species diversity and biomass were related to the measured parameters pH, conductivity, water width and to the qualitative parameters type of the stream bed (natural/regulated), presence/absence of aquatic vegetation and presence/absence of pools. Further aim was to compare populations of certain fish species in 2000 and in 2016. The ichthyological survey was conducted by the standard method of electrofishing via battery aggregate. Data were collected from 48 profiles of 18 localities and altogether were detected one lamprey species and 14 fish species: Lampetra planeri, Salmo trutta, Cottus gobio, Perca fluviatilis, Rutilus rutilus, Phoxinus phoxinus, Lota lota, Barbatula barbatula, Esox lucius, Anguilla anguilla, Tinca tinca, Salvelinus fontinalis, Scardinius erythrophtalmus, Tiger trout and Gobio gobio. Finally, it was surveyed that water width and presence of aquatic vegetation had effect on species diversity. It was confirmed that natural type of stream bed, presence of aquatic vegetation and presence of pools increased numbers of individuals of different age groups of certain species on selected profiles. Differences of numbers of individuals of species on selected localities in 2000 and in 2016 were described on common chart, however they were not statistically significant. And then separately for individual fish species as well, where the decline of Eurasian minnows, Stone loaches, Gudgeons and increase of Brown trouts and Bullheads were found. Consequently, study gives a comprehensive and overall review of actual ichthyofauna of the Brdy PLA.

Keywords

fish, protected area, species diversity, abundance, biomass, environment

Jazyk práce: angličtina

Datum vytvoření / odevzdání či podání práce: 27. 4. 2017

Obhajoba závěrečné práce

• Vedoucí: prof. RNDr. Pavla Hejcmanová, Ph.D.
• Oponent: Lukáš Kalous, Ph.D.

Česká zemědělská univerzita v Praze

Fakulta tropického zemědělství

Magisterský studijní program / obor:
Tropické zemědělství / Wildlife Management in Tropics and Subtropics