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1. first report of round goby, Neogobius melanostomus (Pisces, Gobiidae) in the waters of Slovakia

Creator:
Stráňai, Ivan and Andreji, Jaroslav
Type:
article and TEXT
Subject:
Neogobius melanostomus, Gobiidae, distribution, Slovakia, Danube River, and Hron River
Language:
English
Description:
After Neogobius kessleri, Neogobius gymnotrachelus, and Neogobius fluviatilis, Neogobius melanostomus is the fourth species of Gobiidae to find its way up the River Danube to Slovakia, occurring in our samples near Štúrovo (river km 1720) and in the River Hron (river km 0.82). The fish (male, females, juvenile) were captured along weakly sloped sandy riverbanks with large stones. The mensural and meristic characters of the specimens were similar to those reported elsewhere for the species.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/

2. Identification and assessment of long-term trends of surface water quality determinands in Slovakia for implementation of the EU WFD

Creator:
Pekárová, Pavla, Miklánek, Pavol, Rončák, Peter, Adámková, Juliana, Chriašteľ, Robert, Metelková, Miroslava, and Pekár, Ján
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
long-term trends, water quality, WFD 2000/60/EC, Slovak Republic, Hron River, dlhodobé trendy, kvalita vody, smernica 2000/60/EC, Slovensko, and Hron
Language:
Slovak
Description:
The procedure for identification of the long-term trends in the individual water quality determinands in surface water is described in the study. The methodology is based on requirements of the Directive 2000/60/EC and the existing water quality data in the database of the Slovak Hydrometeorological Institute. The methodology gives guidance for estimation of following issues: - influence of the length of the series on trends of development; - methods for calculation of the statistical characteristics; - methods for identification of the increasing and decreasing trends, as well as of the trend reversal point; - selection of the decision criteria for assessment of the trend significance. The methodology was applied for the trend analysis of the selected pollutants in the middle part of Hron River at Salkova near Banska Bystrica city. The results show that the rapid increase of pollution in 1970`s is followed by gradual improvement of the surface water quality in next period. and V predloženej štúdii je opísaný postup pri identifikácii dlhodobých trendov jednotlivých ukazovateľov kvality vody v povrchových tokoch. Pri vypracovaní metodiky sa vychádzalo z požiadaviek smernice 2000/60/EC a z existujúcich údajov o kvalite vody v databáze Slovenského hydrometeorologického ústavu. Vypracovaná metodika navrhuje konkrétne postupy na určovanie, napr. - vplyvu dĺžky obdobia na vývojové trendy; - spôsobov výpočtu štatistických ukazovateľov; - spôsobov identifikácie trendov rastu a poklesu, ako i bodov obratu trendu; - kritérií na rozhodovanie o významnosti jednotlivých trendov. Navrhnutá metodika bola aplikovaná pri analýze vybraných ukazovateľov kvality vody v mieste odberu Hron-Šalková , situovanom pri Banskej Bystrici. Z výsledkov vyplýva, že po prudkom náraste znečistenia stredného Hrona v sedemdesiatych rokoch dvadsiateho storočia dochádza k postupnému zlepšovaniu kvality povrchových vôd v tomto úseku.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public