Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Jan Błachuta"'
Publikováno v:
Acta Societatis Botanicorum Poloniae, Vol 78, Iss 3, Pp 241-246 (2011)
Azolla filiculoides has been an ephemeral plant in Poland since the end of the 20th century. In the last 15 years this species appeared in 5 locations in south-west Poland. Habitat and plants of two populations became destroyed, three other still exi
Externí odkaz:
https://doaj.org/article/61c374a371b54e8faea6c6c830fd2761
Autor:
Andrzej Witkowski, Jacek Stefaniak, Jan Kotusz, Jan Błachuta, Margin Popiołek, Krzysztof Wawer
Publikováno v:
Annales Zoologici. 65:287-293
A hybrid Leuciscus leuciscus × Alburnus alburnus was found during the ichthyofaunistic studies in the Bystrzyca River, a left-bank tributary of the Odra River (SW Poland). The hybrid was identified on the basis of its intermediate features and chara
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a6e02f08a23cba132da2111f1d3f0ca9
https://doi.org/10.3161/00034541anz2015.65.2.010
https://doi.org/10.3161/00034541anz2015.65.2.010
Publikováno v:
ResearcherID
The aim of the study was to demonstrate the relationship between macroinvertebrate assemblages and aquatic vegetation interacting with chemical and geomorphological factors. The survey was carried out in the catchment of a lowland river in Poland in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5323f273f2832e8f9aaf79954c4c13d
https://doi.org/10.3161/104.062.0111
https://doi.org/10.3161/104.062.0111
Publikováno v:
Fragmenta Faunistica. 55:49-74
The ichthyofauna of the Odra River, its major tributaries (Olawa, Widawa, Bystrzyca, Śleza) and selected reservoirs (sand and clay pits, city park ponds, recreational reservoirs, city moat) within the city of Wroclaw is described on the basis of dat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3c3b66f0e7e9c1cbc83128c5e167bb72
https://doi.org/10.3161/00159301ff2012.55.1.049
https://doi.org/10.3161/00159301ff2012.55.1.049
Autor:
Jacek Morzuch, Władysław Borowski, Rafał Bernaś, Jan Błachuta, Andrzej Witkowski, Erkki Ikonen, Andrzej Kapusta, Andis Mitans, Bronius Bradauskas, Anna Garbacik-Wesołowska, Ryszard Bartel
Publikováno v:
Archives of Polish Fisheries. 18
A comparative study of the size distribution of river lamprey, Lampetra fluviatilis (L.), was conducted in several rivers in the Baltic Sea basin. Total length and weight data were collected from 7503 lamprey individuals. Sex ratio distributions were
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b35897a7f2f049320e05de303b74fd1
https://doi.org/10.2478/v10086-010-0028-6
https://doi.org/10.2478/v10086-010-0028-6
Publikováno v:
Acta Ichthyologica et Piscatoria 19(2): 3-19
The studies were carried out on the material of 308 individuals from 18 upland river of moraine character, in north-western Poland. The growth rate, growth intensity, condition factor and the dependence between body weight and total length were estim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2037c6771b786fb39bae306cb3917caf
https://doi.org/10.3750/aip1989.19.2.01
https://doi.org/10.3750/aip1989.19.2.01
Autor:
Państwowe Wydawnictwo Naukowe, Jan Błachuta, Polska Akademia Nauk. Instytut Zoologii, Andrzej Witkowski
Publikováno v:
Fragmenta Faunistica. 31:459-504
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ec4e4e33e84e189eac2a5ca1c66de4f
https://doi.org/10.3161/00159301ff1988.31.17.459
https://doi.org/10.3161/00159301ff1988.31.17.459
Publikováno v:
Acta Ichthyologica et Piscatoria 19(2): 21-28
The most intense growth of grayling ovaries takes place in autumn and winter (September-March), of testes-in summer (July-September). Older females and males all seasons have a higher GSI, and the diameter of developing eggs is higher.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::098ff5d75acc1353d25d2a9461db8ee0
https://doi.org/10.3750/aip1989.19.2.02
https://doi.org/10.3750/aip1989.19.2.02