Temat: non-native - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: "They can achieve their aims without native skills in the field of work or studies": Hungarian students views on English as lingua franca
Autorzy:: Kontra, Edit H.
Csizer, Kata
Powiązania:: https://bibliotekanauki.pl/articles/781061.pdf
Data publikacji:: 2011-04
Wydawca:: Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:: English as a lingua franca
EFL users
native and non-native speakers
ELF awareness
native varieties
Opis:: This article explores the potential offered by complexity theories for understanding language learners’ sense of self and attempts to show how the self might usefully be conceived of as a complex dynamic system. Rather than presenting empirical findings, the article discusses existent research on the self and aims at outlining a conceptual perspective that may inform future studies into the self and possibly other individual learner differences. The article concludes by critically considering the merits of a complexity perspective but also reflecting on the challenges it poses for research.
Źródło:: Studies in Second Language Learning and Teaching; 2011, 1, 1; 135-152
2083-5205
2084-1965
Pojawia się w:: Studies in Second Language Learning and Teaching
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: Academic Lecturing through the Medium of a Non-native Language: A Collaborative Endeavour of Lecturers and Students
Autorzy:: Chodkiewicz, Halina
Powiązania:: https://bibliotekanauki.pl/articles/1795804.pdf
Data publikacji:: 2019-11-05
Wydawca:: Katolicki Uniwersytet Lubelski Jana Pawła II. Towarzystwo Naukowe KUL
Tematy:: edukacja międzynarodowa; język nierodzimy; wykład akademicki; style wygłaszania wykładu; struktura wykładu
education internationalization; non-native language; academic lecture; lecture delivery styles; structuring lecture discourse
Opis:: Wykład akademicki w języku nierodzimym jako forma współpracy między wykładowcą i studentem Wykład akademicki odgrywa nadal kluczową rolę w przyswajaniu wiedzy dziedzinowej w środowisku akademickim, zarówno w bardziej tradycyjnej formie monologowej, jak też w formie interaktywnej, wprowadzającej użycie nowych technologii. Umiędzynarodowienie szkolnictwa wyższego sprawia, że w kontekście wielojęzyczności adresatami działań akademickich stają się osoby, które nie zawsze osiągnęły dostatecznie wysoki poziom kompetencji w języku docelowym, niebędącym ich językiem rodzimym. Niniejszy artykuł podejmuje dyskusję na temat najbardziej istotnych kwestii wynikających z potrzeby opracowywania i prezentacji wykładów w taki sposób, aby tacy słuchacze byli w stanie nie tylko skutecznie opanować wiedzę przedmiotową, ale także potrafili wykorzystywać swój potencjał intelektualny, jednocześnie doskonaląc niezbędne umiejętności w zakresie języka docelowego. Szczególną uwagę poświęcono potrzebie współpracy między wykładowcą a studentem poprzez wykorzystywanie optymalnych rozwiązań dydaktycznych, dostosowanych do możliwości studentów w sytuacji pojawiających się trudności na płaszczyźnie językowej.
Academic lectures are implemented as a basic genre in developing students’ disciplinary knowledge in higher education settings. Frequently appearing in their traditional monologic form, they tend to be more interactive nowadays, due to the use of a variety of activities that accompany them, including new technologies. With the internationalization of higher education, numerous lecture attendees are now multilingual students learning through the medium of a non-native language. The aim of this paper is to explore the most vital issues that emerge when lectures are delivered to non-native students at lower language proficiency level so as to enable them to meet their study goals as well as develop their intellectual and language potential. The author argues for the need of effective collaboration between lecturers and their students, based on a better understanding of the complexity of the instructional situation in which students’ language problems can be dealt with by making appropriate adjustments that can improve both lecture comprehensibility and knowledge acquisition.
Źródło:: Roczniki Humanistyczne; 2019, 67, 11; 17-32
0035-7707
Pojawia się w:: Roczniki Humanistyczne
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 3.

Tytuł:: Alien Rubus species in Hungary: distribution, habitats and threats
Autorzy:: Király, G.
Powiązania:: https://bibliotekanauki.pl/articles/2077919.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:: bramble
forest fringes
herbaria
invasion
non-native species
Opis:: Alien brambles (Rubus, Rosaceae) generate significant ecological and nature conservational threats worldwide, however, the European flora and vegetation is not seriously affected by their impacts. In this study, I report on the distribution and habitats of alien brambles in Hungary, on the basis of comprehensive field studies and complete herbarium revision. The first introduction of a non-native species of bramble (R. phoenicolasius) was reported in 1999 in the country. R. armeniacus was first recognized in 2014 (but it had been present probably decades earlier). It typically occurs in forest-poor landscapes, in regions with larger closed forests it is mainly confined to plantations, but few occurrences in nature-like stand are also found. The occur- rences in the forest steppe region indicate its drought tolerance; besides, it is the only bramble species present in the areas of typical forest-steppe climate. The species is obviously advancing (with more than 100 localities altogether) and constitutes an actual threat for the diversity and structure of fringes and wooded grassland mosaics in drier regions. Two new casual aliens, R. laciniatus and R. occidentalis, are reported here for the first time for Hungary. Another two species, R. odoratus and R. xanthocarpus, are known only from cultivation.
Źródło:: Dendrobiology; 2018, 80; 1-11
1641-1307
Pojawia się w:: Dendrobiology
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 4.

Tytuł:: BUILDING UP THAI EFL STUDENTS’ POSITIVE ATTITUDES TOWARD THEIR NON-NATIVE ENGLISH ACCENTED SPEECH WITH THE USE OF PHONETICS WEBSITE
Autorzy:: Tananuraksakul, Noparat
Powiązania:: https://bibliotekanauki.pl/articles/940855.pdf
Data publikacji:: 2017
Wydawca:: Uniwersytet Marii Curie-Skłodowskiej w Lublinie. IATEFL Poland Computer Special Interest Group
Tematy:: Thai EFL learners
phonetics website
language attitude
non-native English accented speech
Opis:: This paper examined the hypothesis that Thai EFL students’ positive attitudes toward their non-native English accented speech could be promoted by the use of University of Iowa’s Sounds of American English website, known as the “number 1 phonetics website”. Fifty-two undergraduate students in the field of sciences participated in the investigation, which took place at two different stages. The findings of both stages mirrored non-native-like identity they perceptually obtained and native-like identity they socially aspired to possess. The findings of the second stage confirmed the hypothesis to some extent because of their synchronous feelings of slightly decreased embarrassment and increased pride and offer two insightful directions for EFL teachers. Firstly, irrespective of students’ actual English accented speech, there is a need to promote their positive attitudes toward their own accent at an early age. Secondly, helping them understand that speaking intelligibly is more important than sounding like a native speaker.
Źródło:: Teaching English with Technology; 2017, 17, 4; 52-63
1642-1027
Pojawia się w:: Teaching English with Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 5.

Tytuł:: Current state, habitat and potential invasiveness of Montia linearis (Douglas ex Hook.) Greene in Poland
Autorzy:: Dembicz, I.
Kozub, L.
Zaniewski, P.T.
Powiązania:: https://bibliotekanauki.pl/articles/59192.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Botaniczne
Tematy:: present state
habitat
biological invasion
Montia linearis
narrowleaf miner's lettuce
weed dispersal
intensive agriculture
cattle
animal breeding
meadow
non-native species
Polska
Opis:: Montia linearis is a vascular plant originating from western North America. The expansion of this species has been observed for several decades. For the first time M. linearis was found in Europe in 1989. Further six populations were documented by 2004 within the continent: three in Poland, two in Denmark and one in Hungary. Apart from discovering a new population of M. linearis, we confirmed two out of the three previously known localities of the species in Poland. All the currently known populations of M. linearis occupied predominantly meadow habitats, especially intensively managed sites. Some individuals were also found in disturbed sites with bare soil. The studied species inhabited soils of various types with broad range of fertility as well as humidity. Montia linearis populations reached densities up to 87 individuals per 0.04 m2. The number of seeds produced by an individual was between 10 and 55 in 90% of the studied specimens, however much more fertile specimens were also observed. As the previously presented hypothesis of M. linearis dispersal with rail transport seemed not to be well supported, the connection between the M. linearis presence and cattle husbandry is considered. It is possible that the species can be transferred with living animals or manure. The species was able to survive for at least 26 years within once inhabited site. Further spread of M. linearis within Europe is highly probable. The aim of the study is to: (i) describe the current state of populations of M. linearis in Poland, (ii) provide information on habitat preferences and biology of the species, (iii) assess the invasiveness potential of M. linearis in Poland.
Źródło:: Acta Societatis Botanicorum Poloniae; 2015, 84, 3
0001-6977
2083-9480
Pojawia się w:: Acta Societatis Botanicorum Poloniae
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 6.

Tytuł:: Detection of Non-native Speaker Status from Backwards and Vocoded Content-masked Speech
Erkennung eines fremden Akzents in der vokodierten und rückwärts gerichteten Sprache
Autorzy:: Rojczyk, Arkadiusz
Porzuczek, Andrzej
Powiązania:: https://bibliotekanauki.pl/articles/1182407.pdf
Data publikacji:: 2021-01-18
Wydawca:: Wydawnictwo Uniwersytetu Śląskiego
Tematy:: accent detection
non-native accent
content-masked speech
vocoded speech
backwards speech
akzenterkennung
nicht-muttersprachlicher akzent
rückwärts gerichtete
sprache
vokodierte sprache
Opis:: This paper addresses the issue of speech rhythm as a cue to non-native pronunciation. In natural recordings, it is impossible to disentangle rhythm from segmental, subphonemic or suprasegmental features that may influence nativeness ratings. However, two methods of speech manipulation, that is, backwards content-masked speech and vocoded speech, allow the identification of native and non-native speech in which segmental properties are masked and become inaccessible to the listeners. In the current study, we use these two methods to compare the perception of content-masked native English speech and Polish-accented speech. Both native English and Polish-accented recordings were manipulated using backwards masked speech and 4-band white-noise vocoded speech. Fourteen listeners classified the stimuli as produced by native or Polish speakers of English. Polish and English differ in their temporal organization, so, if rhythm is a significant contributor to the status of non-native accentedness, we expected an above-chance rate of recognition of native and non-native English speech. Moreover, backwards content-masked speech was predicted to yield better results than vocoded speech, because it retains some of the indexical properties of speakers. The resultsshow that listeners are unable to detect non-native accent in Polish learners of English from backwards and vocoded speech samples.
Die Studie befasst sich mit der Erkennung eines fremden Akzents in der englischen vokodierten und rückwärts gerichteten Sprache. Beide Verarbeitungsverfahren eliminieren eine semantische Information und teilweise (rückwärts gerichtete Sprache) oder vollständig (vokodierte Sprache) eine Spektralinformation, während die rhythmischen Merkmale der Sprache beibehalten werden, die als Differenzierungsgrad der Dauer von prosodischen Einheiten verstanden werden, die zur Unterscheidung von Proben des einheimischen und fremden Akzents dienen könnten. An der Untersuchung nahmen englische Muttersprachler und Polen teil, die diese Sprache auf fortgeschrittenem Niveau gebrauchen. Die Ergebnisse zeigten, dass weder Engländer noch Polen in der Lage sind, einen fremden Akzent in den verarbeiteten Sprachproben nur aufgrund der zeitlichen Verteilung der Akzente (vokodierte Sprache) und des Differenzierungsgrades der Länge von prosodischen Einheiten (rückwärts gerichtete Sprache) zu erkennen.
Źródło:: Theory and Practice of Second Language Acquisition; 2020, 6, 2; 87-105
2450-5455
2451-2125
Pojawia się w:: Theory and Practice of Second Language Acquisition
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 7.

Tytuł:: Determining critical amino acid contacts for knotted protein folding
Autorzy:: Dąbrowski-Tumański, P.
Niewieczerzał, S.
Sułkowska, J. I.
Powiązania:: https://bibliotekanauki.pl/articles/1954247.pdf
Data publikacji:: 2022-02-01
Wydawca:: Politechnika Gdańska
Tematy:: knotted protein
slipknot
2efv folding
contact map
native
non-native
Opis:: Proteins with a non-trivial topological structure are currently well recognized, while a knotted protein chain represents a new motif in protein three dimensional folds. Recent comprehensive analysis of the Protein Data Base shows that knotted proteins represent 1.5% of known protein structures. Determination of a free energy landscape of knotted proteins, and its understanding provides a serious challenge for both experimentalists and theoreticians. Moreover the role of a knot for biological activity of protein still remains elusive. In this work we study the smallest knotted proteins ( PDB code 2efv) to understand/investigate their free energy landscape, by means of extensive molecular dynamics simulations. We explore the dependence of the thermodynamics, kinetics and protein folding pathways on the native-likes contact maps and on the length of the chain. We analyze two sets of native-like contacts , which differ by a number of long range interactions, and we consider the 2efv protein with two different lengths of its C-terminus end. We identify the subset of native contacts sufficient to explore the entire free energy landscape. Then, we analyze the influence of the remaining set of native contacts – we show that the set of additional contacts may enhance folding kinetics, and that it has an influence on folding pathways.
Źródło:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2014, 18, 3; 265--279
1428-6394
Pojawia się w:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 8.

Tytuł:: Discourse markers in non-native EFL teacher talk
Autorzy:: Vickov, Gloria
Jakupčević, Eva
Powiązania:: https://bibliotekanauki.pl/articles/780467.pdf
Data publikacji:: 2017
Wydawca:: Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:: discourse markers
non-native (Croatian) EFL teachers
classroom discourse
Opis:: The present study aims to investigate the use of discourse markers (DMs) in non-native (Croatian) EFL teachers´ talk with primary and secondary school students. The study concentrates on the occurrences and frequencies of DMs, but it also provides an account of the function distribution of the three most frequently used DMs (ok, so, and). The quantitative and qualitative analyses of the recorded transcriptions reveal that the teachers use a variety of DMs, almost exclusively the ones typical of classroom management and classroom discourse organization, with no significant differences in the patterns of DM use with the primary and secondary school students. The DMs fulfill a number of structural and interpersonal functions mainly aimed at providing coherent and stimulating classroom discourse. The findings of this study might contribute to raising awareness of the diversified functions of DMs, which could facilitate non-native EFL teachers´ overall lesson organization and structuring of particular teaching segments.
Źródło:: Studies in Second Language Learning and Teaching; 2017, 7, 4; 649-671
2083-5205
2084-1965
Pojawia się w:: Studies in Second Language Learning and Teaching
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 9.

Tytuł:: Ecological significance of some kenophytes in Lower Silesian national parks
Autorzy:: Fabiszewski, J
Brej, T.
Powiązania:: https://bibliotekanauki.pl/articles/58362.pdf
Data publikacji:: 2008
Wydawca:: Polskie Towarzystwo Botaniczne
Tematy:: Impatiens glandulifera
plant ecology
biological invasion
Lower Silesian national park
invasiveness
environmental problem
non-native species
Reynoutria japonica
national park
botany
invasive species
habitat preference
Sudetes Mountains
Opis:: The paper presents the results of several years investigations (2003-2007) on two invaders: the Himalayans Impatiens glandulifera and Asiatic Reynoutria japonica. The Sudety Mountains and their national parks are under strong pressure of both species, threatening the local vegetation. The four-year investigations have been carried out in field, glasshouse and in laboratory. Invasive species have their peculiar life histories which help them to occupy new areas. Those are above all the specific generative reproduction strategies (Impatiens) or vegetative reproduction strategies (Reynoutria). Both strategies secure the reproductive success and to capture more and more highly situated areas of the mountains. Very significant characteristics connected with the expansion of invaders is the excessively over and above the average production of seeds (Impatiens) and a huge annual increment aboveground biomass (Reynoutria). The investigated invasive species are probably not equipped with influence of allelopatic type as of greater importance is their competitive strength. The invaders can eliminate a part of the early spring flora belonging to the geophyte group and impoverish the regional biological diversity. Both the invasive plants enter also into some moist mountain forest communities.
Źródło:: Acta Societatis Botanicorum Poloniae; 2008, 77, 2
0001-6977
2083-9480
Pojawia się w:: Acta Societatis Botanicorum Poloniae
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 10.

Tytuł:: Effects of two teaching methods of connected speech in a Polish EFL classroom
Autorzy:: Kul, Małgorzata
Powiązania:: https://bibliotekanauki.pl/articles/620647.pdf
Data publikacji:: 2016
Wydawca:: Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:: connected speech
Negotiation of Form instruction
non-native speakers
pronunciation pedagogy
EFL
Opis:: Abe (2010) argues that the Negotiation of Form (NF) instruction exerts positive effects on learning of connected speech by Japanese learners of English, finding that the progres achieved with NF was more significant than for the traditional treatment. The study reported here seeks to uncover the acquisitional value of NF in a Polish classroom. The study hypothesizes that NF, in comparison with the deductive teaching method, effectively promotes learning of assimilation, elision and weak forms. The hypothesis was tested by investigating production and perception of 50 Polish students of English. As for evaluating the effects of the two types of instructions, a classic pretest-posttest design was used. With regard to methodology, acoustic analysis was performed. The results demonstrate that in general, NF proved more effective than NNF. With regard to individual processes of connected speech, NF was more effective in production, whereas no such effect was found for perception.
Źródło:: Research in Language; 2016, 14, 4
1731-7533
Pojawia się w:: Research in Language
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 11.

Tytuł:: Epibiotic mites associated with the invasive Chinese mitten crab Eriocheir sinensis – new records of Halacaridae from Poland
Autorzy:: Normant, M.
Zawal, A.
Chatterjee, T.
Wojcik, D.
Powiązania:: https://bibliotekanauki.pl/articles/48732.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: epibiotic mite
mite
Chinese mitten crab
Eriocheir sinensis
Halacaridae
non-native species
Oribatida
Hydrachnidia
Polska
Źródło:: Oceanologia; 2013, 55, 4
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 12.

Tytuł:: Feeding ecology of the American crab Rhithropanopeus harrisii (Crustacea, Decapoda) in the coastal waters of the Baltic Sea
Autorzy:: Hegele-Drywa, J.
Normant, M.
Powiązania:: https://bibliotekanauki.pl/articles/47763.pdf
Data publikacji:: 2009
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: Rhithropanopeus harrisii
stomach content
Baltic Sea
Crustacea
brackish water
coastal water
non-native species
Decapoda
feeding ecology
American crab
Opis:: The feeding ecology of the American crab Rhithropanopeus harrisii Gould, 1841 from brackish waters of the Baltic Sea was studied by analyses of the stomach repletion index (SRI) and stomach content with regard to sex, size and habitat (Dead Vistula River and the Gulf of Gdańsk). Neither the sex nor the size of an individual crab had a significant (P>0.05) influence on the SRI or on the diversity of food items found in the stomachs of R. harrisii. But the type of food consumed was significantly (P<0.05) dependent on the locality inhabited: the greater the biodiversity of the habitat, the richer the dietary composition. In Baltic coastal waters this species feeds on detritus, and also on animal and plant matter. Remains of Chlorophyta, Amphipoda, Ostracoda, Polychaeta, Gastropoda and Bivalvia were found in the stomachs of the specimens analysed.
Źródło:: Oceanologia; 2009, 51, 3; 361-375
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 13.

Tytuł:: Gonad maturity in female Chinese mitten crab Eriocheir sinensis from the Southern Baltic Sea – the first description of ovigerous females and the embryo developmental stage
Autorzy:: Wojcik, D.
Normant, M.
Powiązania:: https://bibliotekanauki.pl/articles/47779.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: gonad maturity
Chinese mitten crab
Eriocheir sinensis
female
non-native species
embryo
development stage
Baltic Sea
Źródło:: Oceanologia; 2014, 56, 4
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 14.

Tytuł:: Growth Rate, Age and Size Structure of the Alien Pumpkinseed, Lepomis gibbosus (L., 1758) Population from a Heated-water Discharge Canal of a Power Plant in the Lower Stretch of the Oder River, Poland
Tempo wzrostu, wiek i struktura populacji nierodzimego bassa słonecznego, Lepomis gibbosus (L., 1758) z wód pochłodniczych dolnej Odry, Polska
Autorzy:: Domagała, J.
Czerniejewski, P.
Pilecka-Rapacz, M.
Powiązania:: https://bibliotekanauki.pl/articles/1813938.pdf
Data publikacji:: 2016
Wydawca:: Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:: non-native fish
pumpkinseed
population structure
growth rate
Odra River
ryby nierodzime
bass słoneczny
struktura populacji
tempo wzrostu
rzeka Odra
Opis:: In 2010-2013, 1077 pumpkinseed individuals were caught using an electric pulse device and subjected to population studies aimed to determine their sex, length and age structure, as well as biological studies assessing fish growth rate and condition. Moreover, an annual cycle of seasonal changes in these parameters was demonstrated. In the sex structure of the population, males prevailed over females, constituting 57.38% and 33.43%, respectively, while individuals of unspecified sex were 9.19% (including 3.9% of juvenile individuals). The mean total length (TL) of the caught fish was 162.62 mm, with the mean weight per individual of 83.21 g. Among the caught fish, males represented 70.07% and females represented 29.93%. As regards the age structure, most individuals belonged to the groups aged 3+ and 4+, which together constituted 58.31% of the fish. The mean weight per individual of the caught pumpkinseed was 41.65 g (SD = 24.81), with a total length of 11.98 cm (SD = 2.97). The largest annual increments in the length of the investigated fish were observed in the first year of life (5.87 cm), with increments nearly 3 times lower in the following years. The growth rate of the pumpkinseed was significantly higher in comparison to the populations inhabiting other European waters and was similar to the fast-growing populations occurring in the natural range of occurrence. The probable factor allowing the higher growth rate of the pumpkinseed in the Warm Canal is water temperature much higher than that in natural waters.
Bass słoneczny jest gatunkiem obcym w wodach Europy, a występowanie populacji jest punktowe i ograniczone tylko do wód o korzystnych warunkach środowiskowych dla tego gatunku. W Polsce rozsiedlony jest w wodach kanału ciepłego elektrowni Dolna Odra, o termice wody znacznie wyższej niż w wodach naturalnych. W latach 2010-2013, przy pomocy elektrycznego urządzenia impulsowego, do badań złowiono 1077 bassów słonecznych, które poddano badaniom populacyjnym określając struktury płci, długości i wieku oraz biologicznych, oceniając tempo wzrostu długości i kondycję ryb. Ponadto wskazano sezonowe zmiany tych parametrów w cyklu rocznym. W strukturze płci dominowały samce, stanowiące 57,38%, samice stanowiły 33,43%, natomiast osobniki z nieoznaczoną płcią 9,19%, w tym osobniki juwenilne 3,9 %. Średnia długość całkowita (TL) złowionych ryb wyniosła 162,62 mm, przy średniej masie jednostkowej 83,21 g. Wśród złowionych ryb dominowały samce stanowiące 70,07% ryb, samice stanowiły 29,93%, W strukturze wieku ryb najwięcej osobników stwierdzono w grupach wieku 3+ i 4+, które stanowiły łącznie 58,31% ryb. Średnia masa jednostkowa złowionych bassów wyniosła 41,65 g (SD = 24,81), przy długości całkowitej 11,98 cm (SD = 2,97). Największe roczne przyrosty długości u badanych ryb zanotowano w pierwszym roku życia (5,87cm), podczas gdy w kolejnych przyrosty były blisko 3 krotnie niższe. Tempo wzrostu długości bassów słonecznych było zdecydowanie wyższe w porównaniu do populacji zamieszkujących inne wody Europy i zbliżone do szybkorosnących populacji występujących w naturalnym zasięgu występowania. Prawdopodobnie czynnikiem warunkującym szybki wzrost bassów z wód kanału ciepłego jest woda o podwyższonej termice w stosunku do wód naturalnych.
Źródło:: Rocznik Ochrona Środowiska; 2016, Tom 18, cz. 1; 273-290
1506-218X
Pojawia się w:: Rocznik Ochrona Środowiska
Dostawca treści:: Biblioteka Nauki