scholarly journals Evaluation of the Composition of Ichthyofauna in Lakes Free from Commercial Use in a Tightly Protected Area of the Wolin National Park (Poland)

Water ◽  
2021 ◽  
Vol 13 (18) ◽  
pp. 2530
Author(s):  
Marcin Biernaczyk ◽  
Konrad Wrzecionkowski ◽  
Arkadiusz Nędzarek ◽  
Katarzyna Stepanowska
Keyword(s):  
National Park ◽  
Perca Fluviatilis ◽  
Rutilus Rutilus ◽  
Abundant Species ◽  
Predatory Fish ◽  
Roach Rutilus Rutilus ◽  
Triturus Cristatus ◽  
Lissotriton Vulgaris ◽  
Bream Abramis Brama ◽  
Perch Perca Fluviatilis

The ichthyological biodiversity of Polish lakes is poorly understood, even in lakes not used for fishing and those under strict protection. With this in mind, the aim of this study was to conduct a comprehensive ichthyological survey of several lakes in the Wolin National Park (Poland). The study was conducted in Domysławskie and Gardno lakes and the anthropogenic Stara Kredownia reservoir. Each fishing exercise was conducted using benthic nets over a 12 h period. The fish caught were measured and weighed, and the species identified. Shannon-Wiener (H) and Simpson biodiversity indices were determined. The catch comprised a total of 4580 fish (of which 4391 were caught in Domysławskie Lake) belonging to 15 species, with a combined weight of 98,165 g. In general, the most prevalent species were non-predatory fish: roach (Rutilus rutilus), freshwater bream (Abramis brama), white bream (Blicca bioerkna), bleak (Alburnus alburnus), and rudd (Scardinius erythrophthalmus). Individually, perch (Perca fluviatilis) and roach (Rutilus rutilus) were the most abundant species. Ichthyofauna diversity varied greatly between the studied water bodies, with 15 species found in Domysławskie Lake and only 6 species in Gardno Lake. In Stara Kredownia Reservoir, no fish were caught, but amphibians were observed, such as great crested newts (Triturus cristatus) and common newts (Lissotriton vulgaris). Based on the results obtained, Lake Domysławskie had a higher species ichthyofauna diversity than the other ‘tench and pike’ lakes. Gardno Lake had a much lower biodiversity.

Influence of Water Clarity on the Catchability of Six Freshwater Fish Species in Bottom Trawls

1992 ◽  
Vol 49 (5) ◽  
pp. 885-893 ◽  
Author(s):  
Anthone D. Buijse ◽  
Leendert A. Schaap ◽  
Tammo P. Bust
Keyword(s):  
Light Intensity ◽  
Fish Species ◽  
Perca Fluviatilis ◽  
Rutilus Rutilus ◽  
Water Clarity ◽  
Roach Rutilus Rutilus ◽  
Bream Abramis Brama ◽  
Perch Perca Fluviatilis ◽  
Class Strength ◽  
Influence Of Water

Bottom trawl surveys are carried out every autumn to estimate the relative abundance of six major fish species, especially that of pikeperch (Stizostedion lucioperca) and Eurasian perch (Perca fluviatilis), in the 182 000-ha Lake IJssel, The Netherlands. The catchability of these species is influenced by light intensity at the bottom and therefore by water clarity and water depth. In autumn, water clarity can differ greatly from day to day because of wind-mediated resuspension of sediments. Catchability of ruffe (Gymnocephalus cernua) and age 0 pikeperch showed a significant inverse relationship with light intensity at the bottom, and therefore, a correction should be made when catch data for these species are used to estimate population size or year-class strength. Results were not consistent for perch, while for smelt (Osmerus eperlanus), roach (Rutilus rutilus), and bream (Abramis brama) the influence of light intensity on catchability was not significant. Corrected and uncorrected estimates of the abundance of age 0 pikeperch, based on trawl samples, were compared to demonstrate the effect of water clarity on the estimation of year-class strength. Increased water clarity can lead to zero catches and consequently diminish the effectiveness of sampling programmes.

scholarly journals Ichthyofauna of some reservoirs of local significance in Aksu district, Pavlodar region

2021 ◽  
Vol 2 ◽  
pp. 28-52
Author(s):  
Zh. Kabdolov ◽  
◽  
K. Tursunkhanov ◽  
A. Kasymkhanov ◽  
I. Pritykin ◽  
...  
Keyword(s):  
Silver Carp ◽  
Perca Fluviatilis ◽  
Rutilus Rutilus ◽  
Roach Rutilus Rutilus ◽  
Bream Abramis Brama ◽  
Perch Perca Fluviatilis ◽  
The Republic ◽  
Tench Tinca Tinca ◽  
Golden Carp ◽  
Local Significance

In 2020, research works were carried out on seven reservoirs of local significance in Aksu district, Pavlodar region. These are Lake Komendant, Lake Krasnoe, Lake Lesnoe, Lake Topalevoe, Lake Kara Murza, Lake Baltazhar and the Karasu Channel. In these reservoirs, the ichthyological composition was studied, such fish species as pike (Esox lucius L., 1758), silver carp (C. gibelio (Bloch, 1782)), golden carp (Carassius carassius (L., 1758)), rotan (Perccottus glenii Dybowski), tench (Tinca tinca (L., 1758)), perch (Perca fluviatilis L. ,1758), roach (Rutilus rutilus (L., 1758)), carp (Cyprinus carpio L.,1758), and bream (Abramis brama (L., 1758)). The species of fish included in the Red Book of the Republic of Kazakhstan, as well as rare or endangered, are not marked in the research catches of the studied reservoirs.

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