Hydrobiology

Diet composition and prey selection of vendace Coregonus albula in the mesotrophic, temperate Lake Ostrowite (Northern Poland)

by Paweł Napiórkowski

Evolution of ecohydrological approach during 60 years of hydrobiological activity at Nicholas Copernicus University, Toruń (Poland)

by Paweł Napiórkowski

Nicholaus Copernicus University of Toruń was founded in 1945. In the year that followed Professor Józef St. Mikulski... more Nicholaus Copernicus University of Toruń was founded in 1945. In the year that followed Professor Józef St. Mikulski established the Department of Environmental Protection and Ecology, as part of the Faculty of Mathematics and Natural Sciences. At the same time he initiated research and teaching in the area of hydrobiology. He launched pioneering team research projects of lake Druzno, a natural reservation area, and also, in co-operation with Professor Kazimierz Tarwid, he carried out hydrological research of the Vistula River (the longest river of Poland) with its potential for fishing in view. As a consequence of further developments, which consistently involved the establishment of the Department of Hydrobiology, research was largely focused on such areas as hydrochemistry, zooplankton and zoobenthos, mainly in the regions of Iława and Brodnica Lakeland’s. The Department runs a small hydrological station on Lake Jeziorak (Iława Region). The 1970’s marked considerable involvement in research on biological productivity and in extensive studies on the Koronowo Dam Reservoir. As a result, a number of post-doctoral dissertations were completed by: Andrzej Giziński (faunistic typology and the dynamics of lake water), Ryszard Wiśniewski (the role of resuspension of bottom deposits) and Andrzej Kentzer (phosphorus in lake sediments and relations between lakes and their water-sheds). Professor Mikulski was Head of the Department until 1977, and was succeeded by one of his students, prof.  Andrzej Giziński. Following the year 2003 as. prof. Andrzej Kentzer took the leadership over the Department.
Back in the 1980’s a multi-dimensional research project was launched to study the Włocławek Dam Reservoir on the Vistula, which produced a considerable amount of results concluded in a few dozens of publications. The results provide clear evidence of the Dam’s positive effect on the qualitative parameters of water and biodiversity in the Vistula. Presented paper will provides further details.

Diurnal variability of zooplankton in the limnetic part of the Włocławek Reservoir (Poland).

by Paweł Napiórkowski

published in AUNC Limnological Papers 24

Studies of the diurnal variability of zooplankton were carried out in the deeper (4m.) part of the limnetic zone of... more Studies of the diurnal variability of zooplankton were carried out in the deeper (4m.) part of the limnetic zone of the Włocławek Reservoir on 15 – 16 June  1999. 24 samples were taken at one hour’s intervals at the depth of 1m. and 5 samples at a depth of 3 m.
Our observations showed high variability of the zooplankton’s numbers and biomass (Rotifers and Crustaceans) over 24 hours both at the depth of 1 m. and 3 m.

Influence of hydrological conditions on zooplankton of oxbow lakes (old riverbeds) of the Lower Vistula in the city of Toruń (Poland).

by Paweł Napiórkowski

published  in Limnological Papers v. 4, 2009

The research on zooplankton was being conducted during the vegetation season from April to October 2006, in three... more The research on zooplankton was being conducted during the vegetation season from April to October 2006, in three different types of oxbow lakes of the Lower Vistula – (isolated site 1, site 2 connected with the Vistula River by an inlet, and site 3 artificially isolated by a concrete embankment), as well as in the river - site 4 at the 736th km of its course. Zooplankton of the oxbow lakes was qualitatively and quantitatively much richer as compared to potamoplankton of the Vistula River - a higher number of species (sites 1, 2 and 3 - 44 species and site 4 – 25 species), the count (site 1-3 – on average 426 specimens/dm3 and site 4 – 94 specimens/dm3), as well as biomass (site 1-3 – on average 0.966 mg m.m./dm3 and site 4 – 0.066 mg m.m./dm3). More stable hydrological conditions prevailing in oxbow lakes are favourable to the development of zooplankton.
When investigating the subsequent oxbow lakes, the following was found:
the higher number of species (34 and 29) and higher average frequencies, as well as biomass at the sites isolated from the rapid exchange of water or sites completely isolated - site 2 (721 specimens/dm3, 1.220 mg m.m./dm3) and site 1 (443 specimens/dm3, 1.566 mg m.m./dm3).
Based on the results presented in the publication, a conclusion can be drawn that the more the oxbow lake is isolated from the riverbed (more stable hydrological conditions) the richer the zooplankton gets. Although the delicate washing of the oxbow lake with waters of the Vistula River can enrich it with Rotifera (site 2).

Pollen, diatom and plant macrofossil assemblages indicate a low water level phase of Lake Peipsi at the beginning of the Holocene

by Volli Kalm

Assessing the Risks of Aquatic Species Invasions via European Inland Waterways: From Concepts to Environmental Indicators

by Michal Grabowski

A new record of the freshwater jellyfish Craspedacusta sowerbii Lankester, 1880 (Hydrozoa) in Southeastern Anatolia Turkey

by Memet VAROL

We report the first record of the invasive freshwater jellyfish Craspedacusta sowerbii Lankester in Kralkızı Dam Lake,... more We report the first record of the invasive freshwater jellyfish Craspedacusta sowerbii Lankester in Kralkızı Dam Lake, Southeastern Anatolia. The medusa was found only in August, 2008 when average surface water temperatures were 26.9 C.

The Distribution and Ecology of Hydropsyche Bulgaroma-Norum and Hydropsyche Contubernalis (Trichoptera: Ну-Dropsychidae) In Poland and Belarus

by Stanislaw Czachorowski

Differentiation of the Habitats of Hydropsychidae Larvae (Insecta: Trichoptera) In the Pasleka River As a Result of Avoidance of Trophic Competition

by Stanislaw Czachorowski

Analysis of the Distribution of Caddis Larvae (Trichoptera) In the Elodeid Zone of Two Lakes of East Poland, Based on the Concept of Habitatual Islands

by Stanislaw Czachorowski

Pol. Arch. Hydrobiol., 40: 165-180.

The Macroinvertebrate Fauna of Some Byelorussian, Karelian, and Altaian Springs and Its Relation With Certain Factors

by Stanislaw Czachorowski

Caddis Flies (Trichoptera) of the River Pasleka (Northern Poland)

by Stanislaw Czachorowski

Vertical distribution of Trichoptera in three Masurian lakes - results of preliminary studies

by Stanislaw Czachorowski

Pol. Arch. Hydrobiol., 36, (3): 351 - 358

Chruściki (Trichoptera) Jezior Polski: Charakterystyka Rozmieszczenia Larw

by Stanislaw Czachorowski

Chrusciki (Trichoptera) Parku Krajobrazowego Lasy Janowskie

by Stanislaw Czachorowski

co-authors Buczyński, R. Stryjecki,, Parki Nar. Rez. Przyr., 19: 65-84.

Caddisfly fauna of the Janowskie Forests Landscape Park (SE Poland) is characterised, basing on author’s materials... more Caddisfly fauna of the Janowskie Forests Landscape Park (SE Poland) is characterised, basing on author’s materials from the years 1995-98 and on a small collection from the years 1959-60. 63 species were collected. Species composition, naturality, ecological state of park’s fauna and their probable changes in past and future of are analysed and discussed. There are observed impoverishment of aquatic fauna in result of anthropogenic transformations of water environments and renaturalisation of the fauna in some habitats during the last years. Basing on collected data, the postulate creation of national park is supported.

The Importance of Aquatic Insects for Landscape Integration In the Catchment Area of River Gizela (Masurian Lake, District, Northeastern Poland)

by Stanislaw Czachorowski