Event Abstract Back to Event Monitoring of water quality in the Rega River and its tributaries and their usefulness for fish species of high habitat requirements Arkadiusz Nędzarek1, Agnieszka Tórz1, Małgorzata Bonisławska1, Adam Tański1, Agata Korzelecka-Orkisz1, Beata Więcaszek1 and Krzysztof Formicki1* 1 West Pomeranian University of Technology, Poland Threats to natural value of coastal rivers of the southern Baltic results from physical factors (e.g. damming, channel reconstruction, hydro power plants), chemical (wastewater discharge) and biological (e.g. infection with VHS virus from fish farms) factors. In this context, it is advisable to monitor their water quality. The Rega River is among the main rivers of the region: length 168 km, surface area 2725 km2, mean annual flow at the estuary 20.6 m3/s. The aim of the study was assessment of water quality in the Rega River and its largest tributaries in annual cycle, in order to identify the physico-chemical factors which cause a significant deterioration in the living conditions of fishes, especially salmonids. The procedures used followed the recommendations contained in the Act of the Minister of Environment of October 4th 2002 regarding requirements for inland waters which are fish habitats in natural conditions (Dz. U. Nr 176, poz. 1455). The water quality indices were determined following the Standard Methods for Examination of Water and Wastewater (American Public Health Association, 2005). The water of the studied rivers was characterised by moderate salinity (electrolytic conductivity of 150-400 S cm-1), moderate hardness (>300 mg CaCO3 dm-3) and a wide range of values of total suspension (from 10 to 310 mg dm-3) – in winter the last index usually exceeded the recommended values. In the group of determined indices, water temperature (range of temperature in summer was 10.8-18.4oC), acidity (pH in all the study period ranging from 6 to 9), as well as ammonium nitrogen and total phosphorus (respective concentrations of >0.78 mgN dm-3 and >0.2 mgP dm-3) always met the requirements for waters as habitats of species of the genus Salmo, family Coregonidae or the grayling (Thymallus thymallus). However, the concentration of dissolved oxygen (mostly exceeding 7 mgO2 dm-3) and content of organic matter (BOD5 values usually below 3 mgO2 dm-3) sporadically failed to meet the standards recommended for fish species with high habitat requirements. The index which sporadically disqualified the water in the monitored rivers was nitrite nitrogen, however the concentration of N-NO2- was usually within 0.1 to 0.3 mg dm-3 – optimum for cyprinid species (Cyprinidae) as well as such species as pike (Esox Lucius), perch (Perca fluviatilis) and eel (Anguilla anguilla). In conclusion it can be said that the studied waters may constitute adequate environment for fish species with high habitat requirements, but the quality of the habitat conditions is deteriorated by periodic increase in the content of nitrite nitrogen and episodic deterioration of oxygen conditions resulting from increased content of organic matter. Acknowledgements The study was done within the project no 00001-6521.1-OR1600002/17/18 financed by Sectoral Operational Programme "Fisheries and See 2014-2020" Keywords: Salmo spp., Water Pollution, dissolved oxygen, Nitrogen, Phosphorus, , total suspended solids Conference: XVI European Congress of Ichthyology, Lausanne, Switzerland, 2 Sep - 6 Sep, 2019. Presentation Type: Poster Topic: ECOLOGY AND LIFE CYCLES Citation: Nędzarek A, Tórz A, Bonisławska M, Tański A, Korzelecka-Orkisz A, Więcaszek B and Formicki K (2019). Monitoring of water quality in the Rega River and its tributaries and their usefulness for fish species of high habitat requirements. Front. Mar. Sci. Conference Abstract: XVI European Congress of Ichthyology. doi: 10.3389/conf.fmars.2019.07.00019 Copyright: The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers. They are made available through the Frontiers publishing platform as a service to conference organizers and presenters. The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated. Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed. For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions. Received: 30 May 2019; Published Online: 14 Aug 2019. * Correspondence: Mx. Krzysztof Formicki, West Pomeranian University of Technology, Szczecin, West Pomeranian, 70-310, Poland, Krzysztof.Formicki@zut.edu.pl Login Required This action requires you to be registered with Frontiers and logged in. To register or login click here. Abstract Info Abstract The Authors in Frontiers Arkadiusz Nędzarek Agnieszka Tórz Małgorzata Bonisławska Adam Tański Agata Korzelecka-Orkisz Beata Więcaszek Krzysztof Formicki Google Arkadiusz Nędzarek Agnieszka Tórz Małgorzata Bonisławska Adam Tański Agata Korzelecka-Orkisz Beata Więcaszek Krzysztof Formicki Google Scholar Arkadiusz Nędzarek Agnieszka Tórz Małgorzata Bonisławska Adam Tański Agata Korzelecka-Orkisz Beata Więcaszek Krzysztof Formicki PubMed Arkadiusz Nędzarek Agnieszka Tórz Małgorzata Bonisławska Adam Tański Agata Korzelecka-Orkisz Beata Więcaszek Krzysztof Formicki Related Article in Frontiers Google Scholar PubMed Abstract Close Back to top Javascript is disabled. Please enable Javascript in your browser settings in order to see all the content on this page.
The aim of the study was to specify the concentration of selected chemical elements in surface waters of King George Island, off the western coast of the Antarctic Peninsula. The research encompassed six streams, a lake and an artificial water reservoir located on the western coast of Admiralty Bay. Measured hydrochemical parameters included pH, conductivity, total dissolved solids (TDS), and total and dissolved forms elements such as Al, Co, Ni, Cu, Zn, Cd, Pb, Mn, Fe, As and Se. The values of pH, conductivity and TDS had the following ranges: 6.09–8.21, 6.0–875 µS cm−1 and 7.0–975 mg/L, respectively, and were typical for surface waters of Antarctica. Wide disparities were discovered regarding concentrations of the investigated elements, ranging from <0.01 µg/L for Cd to 510 µg/L for Fe, and differing from one water body to another. The investigated elements are discussed with reference to environmental conditions and anthropogenic factors. Concentrations of total and dissolved forms of elements are considered in connection with the composition of soil in their surroundings and with atmospheric deposition, mostly such as that took place locally. The increased levels of Pb and Zn concentrations in the immediate proximity of a research station suggested anthropogenic contamination.Keywords: Antarctic surface waters; total and dissolved elements; baseline elements values; anthropogenic metal contamination(Published: 21 March 2014)To access the supplementary material for this article, please see Supplementary files in the column to the right (under Article Tools).Citation: Polar Research 2014, 33, 21417, http://dx.doi.org/10.3402/polar.v33.21417
The influence of intensive fish nutrition on the quality of cooling waters The aim of the present paper is to present the results of a study on the impact intensive carp ( Cyprinus carpio L.), feeding with extruded commercial feed has on the quality of cooling waters. The feed studied had varied fat and carbohydrate contents. The study also revealed the optimal hydrochemical conditions of cooling waters for carp farming. Cage farming caused growing loads of organic matter, nitrogen, and phosphorus in the water. Experimental extraction of feed from the water revealed that high fat fish feed was more stable in comparison to high carbohydrate fish feed. Intensive carp farming with these two feeds led to considerable fish weight gain in both feed groups, but the weight gain for the carp fed with high fat feed, in comparison with that of carp fed with high carbohydrate fish feed, was significantly greater (p<0.01).
