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1
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Oznaczanie zawartości 5-alkilorezorcyn w ziarnie i produktach przemiału żyta

100%
Salek M.
Roczniki Państwowego Zakładu Higieny
|
1978
|
tom 29
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nr 2
2
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Występowanie 5-alkilorezorcyn w ziarnach zbóż

100%
Salek M.
Postępy Nauk Rolniczych
|
1979
|
tom 26
|
nr 2
3

Małopolski przełom Wisły od Annopola do Solca

63%
Stempien-Salek M., Salek M.
Przyroda Polska
|
2013
|
nr 08
4
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Composition of alkylresorcins in grains of various species and varieties of cereals

63%
Salek M., Brudzynski A.
Acta Alimentaria Polonica
|
1981
|
tom 07
|
nr 3-4
The paper chromatography method was used for separation and quantitative determination of composition of the group of 5-alkylresorcins present in acetone extracts from the grains of wheat, rye, triticale and harley. In all the examined cereal plants, the presence of six 5-alkylresorcins was stated. The quantitative composition of these substances was the characteristic feature of each of the cereal species.
5

Population decline of the Little Owl [Athene noctua Scop.] in the Chech Republic

63%
Salek M., Schropfer L.
Polish Journal of Ecology
|
2008
|
tom 56
|
nr 3
527-534
A change of land use is often cited as a causal factor in the decline of many species of farmland birds. Populations of the Little Owl (Athene noctua Scop., 1769) have notably decreased throughout Europe in the last 60 years, including the Czech Republic. The aims of this study were to estimate the recent population trend of the Little Owl and to analyze the importance of altitude and grassland habitat within Little Owl territories. The population trend of the Little Owl in the Czech Republic has still decreasing tendency. The population density dropped from 0.33 breeding pairs (bps) 10 km⁻² to 0.12 bps 10 km⁻² in the first (1993–1995) and second (1998–1999) monitoring program, respectively. The decline is apparent also from results from last Little Owl monitoring program which were carried out in 2005–2006 on 35 study plots (4607 km²). The average population density was estimated at 0.1 bps 10 km⁻². A distinct feature of these recent populations is that they occur in the places with relatively high local density (core areas) in comparison to the surroundings, which are unoccupied. At present, the Little Owl rarely breeds in natural tree cavities, but rather the majority of nesting sites are situated in human artifacts, especially within agricultural objects. Areas in which the Little Owl occurs have a significantly larger proportion of grasslands and are situated at lower altitudes. We suggest that the changes in agricultural landscape associated with disappearance of traditional farming management of grassland habitats, forceful pasturage and regular mowing were the main factors in this long-term population decline. The recent decrease of Little Owls could be also the consequence of the existence of small isolated populations in which mortality is not balanced by immigration from surrounding areas.
6

Effects of intergraded farming on herbal and bird species diversity in Czech agricultural landscapes

63%
Stefanova M., Salek M.
Polish Journal of Ecology
|
2014
|
tom 62
|
nr 1
Negative impacts from application of fertilizers and pesticides in agriculture have been observed since the mid-20th century, when their use rapidly increased. This led to decrease in the number of species connected to the agricultural landscape. So-called integrated farming practices are currently being introduced that aim to mitigate negative impacts on the environment and to stabilize the numbers of wild flora and fauna. A number of studies have examined the positive influence of integrate and organic farming as modern agricultural practices in a European perspective. The positive impact of these practices is particularly evident in plants and invertebrates studied in Italy, Austria, Germany and the UK, for example. There is little such data from Central and Eastern Europe, however, even as the region has specific environmental conditions due especially to the more moderate impact of agriculture there during the second half of the 20th century. In this study, we compared the numbers of herbal and bird species on crop fields and meadows managed with conventional versus integrated systems in Southern and Central Bohemia, the Czech Republic. Our analysis included also the effects of land parcel size, position within these parcels and presence of other habitat elements (ditch, tree, field roads, dunghill, field margins – boundaries, bushes, fallow area) in the vicinity of study plots. We found that herbal communities were significantly more species-rich on lands with integrated farming and similar results were obtained in the case of birds, except there was a non-significant effect of integrated farming on bird species richness in meadows. In addition, the species richness of plants decreased as land parcel size increased. In conclusion, herbal and bird communities were shown to benefit more distinctively from integrated farming in Central Europe, where this effect is not considered unambiguous due to the higher overall habitat heterogeneity and historically lower burdening of farmland with pesticides and fertilizers. The results support the idea that it makes sense even here to introduce integrated forms of agricultural practice.
7

Diversity loss to bird communities after regulation of riverine meanders: Is it compensated by growing oaks on fishpond dams?

51%
Salek M., Svobodova J., Zasadil P.
Acta Ornithologica
|
2007
|
tom 42
|
nr 1
89-97
8

House Sparrows Passer domesticus and Tree Sparrows Passer montanus: fine-scale distribution, population densities, and habitat selection in a Central European city

51%
Salek M., Riegert J., Grill S.
Acta Ornithologica
|
2015
|
tom 50
|
nr 2
9

High population density of Little Owl (Athene noctua) in Hortobagy National Park, Hungary, Central Europe

51%
Salek M., Chrenkova M., Kipson M.
Polish Journal of Ecology
|
2013
|
tom 61
|
nr 1
Little Owl is a rapidly declining farmland species across Central Europe, however its population status is poorly known in Hungary. The main aim of this study was to determine the distribution and population density of Little Owl in Hortobagy National Park (northeastern Hungary), which is characterized by a high proportion of grassland habitats. During March and April of 2011–2012, the Little Owl occurrence was surveyed using tape-recorded stimulation in 245 sampling points in an area of 489 km². In total, we recorded 245 calling males with relative positive occurrence of 75.5% in an individual sampling point. The average nearest neighbour distance of two calling males was 553.6 meters (min. = 70 m, max. = 3100 m). The average population density of Little Owls was 5.01 calling males/10 km², however this could reach up to 85.97 calling males/10 km² in 3.06 km² locally. Residential buildings and farms were the main expected breeding places in our study area. High density of the Little Owl in the study area is probably influenced by traditional pastoral management, extensive agriculture and high proportion of grasslands. The particualar role could be atributed to presence of short-sward pastures around human settlements, considered to be crucial for the species survival in Central Europe. Further monitoring of the Little Owl is necessary to assess its current population status across various parts of its distribution range.
10

Large-scale evaluation of carnivore road mortality: the effect of landscape and local scale characteristics

51%
Cervinka J., Riegert J., Grill S., Salek M.
Acta Theriologica
|
2015
|
tom 60
|
nr 3
11

Wpływ średnicy drewna sosnowego na drgania elektrycznej pilarki z piłą łańcuchową Stihl E180 przy przerzynce

51%
Wojcik K., Skarzynski J., Salek M.
Zeszyty Problemowe Postępów Nauk Rolniczych
|
2009
|
tom 543
W pracy zbadano wpływ średnicy przerzynanego drewna (sosna) na drgania występujące na uchwytach przednim (podtrzymującym) i tylnym (sterującym) pilarki z piłą łańcuchową napędzaną silnikiem elektrycznym. Zakres pracy obejmował pomiar drgań na obu uchwytach pilarki przy przerzynce drewna o średnicach 5, 10, 15, 20 i 25 cm dolną i górną stroną prowadnicy. Otrzymane wyniki poddano analizie statystycznej z zastosowaniem programu Statistica 8.0 PL firmy Statsoft.
12

Age structure and reproduction rates of the ring-necked pheasant (Phasianus colchicus L.) population in agricultural landscape (Czech Republic)

39%
Zika T., Salek M., Hola M., Hanzal V., Hart V., Kusta T., Jezek M.
Polish Journal of Ecology
|
2014
|
tom 62
|
nr 4
Detailed knowledge of demographic parameters (such as age structure and reproduction rates) is crucial for guiding conservation and management decisions regarding wildlife populations. Such parameters of wild ring-necked pheasant populations in the current agricultural landscape remain very poorly described. We researched age structure and reproduction rates of predominantly wild populations of the ring-necked pheasant (Phasianus colchicus L.) across the intensively managed agricultural landscape of the Czech Republic. The study area is influenced only marginally by hand-reared pheasants (i.e. as shown by comparison of the average number of released individuals in the study area: 0.3 ♂/yr/1km2 and 0.9 ♀/yr/1km2 and average number of released individuals and harvested in the study area: 8.6 ♂/yr/1km2) and there is a long-term huntable pheasant population. To determine the age of individuals, we used proximal primary feather shaft diameters of 1487 feather samples from males hunted between 2009 and 2011. Moreover, we evaluated the age structure of females as well as both sexes together based on the sex ratio and annual game census. We found a relatively high proportion of adults in the population in comparison with other studies. However, the number of adults decreased throughout the years: 2009 (♂ 44.7%; ♀ 69.5%; ♂♀ 60.7%), 2010 (♂ 35.2%; ♀ 61.3%; ♂♀ 51.5%), 2011 (♂ 29.8%; ♀ 57.4%; ♂♀ 47.0%). The decrease of adults went hand in hand with increase of juveniles and reproduction rates of the study population: 2009 (♂ 124%; ♀ 44%; ♂♀ 65%), 2010 (♂ 184%; ♀ 63%; ♂♀ 94%), 2011 (♂ 236%; ♀ 74%; ♂♀ 113%). Only males were hunted in the study area so we determined higher proportions of females in population for all years. This is the main reason why the reproduction rate of females was lower in percentage expression. Generally, our results showed lower productivity of pheasants in the Czech agricultural landscape in comparison with earlier published studies conducted in the US and UK. However, these studies were published many years ago and thus do not reflect the actual environmental conditions and changes which took place recently (i.e. agricultural intensification).
13

Population status, habitat associations, and distribution of the steppe polecat Mustela eversmanii in Europe

39%
Salek M., Spassov N., Andera M., Enzinger K., Ottlecz B., Hegyeli Z.
Acta Theriologica
|
2013
|
tom 58
|
nr 3
The steppe polecat Mustela eversmanii is a medium-sized mustelid species whose European population has significantly declined over the past century. However, due to the lack of systematic surveys, little is known about its status and distribution. In this paper, we review the current distribution, habitat associations, and population trends of steppe polecats in Europe and assess the main factors associated with these trends. Our results reveal ongoing population declines in most of the studied countries, which led to fragmentation and local population extinctions at the beginning of the twenty-first century. The species was assessed as rapidly declining in Austria, Czech Republic, Moldova, Slovakia, and Ukraine; declining in Bulgaria; and stable in Hungary. Due to insufficient data, its status was not evaluated for Romania, Poland, and Serbia. M. eversmanii naturally occurs in steppe habitats, but recently seems to have adopted open agricultural landscapes consisting of a mosaic of grasslands, small fields with hedges, and dry embankments. Its distribution often coincides with populations of ground squirrels and hamsters. However, in intensively used agricultural landscapes, smaller rodents (especially voles) could also be an important dietary component. Intensive agricultural production, habitat loss, the degradation of steppe and grassland habitats, and significant declines in the availability of its main prey are the crucial factors for the species’ current population decline. Further research is urgently needed to fill the gaps in our knowledge of its distribution, population densities, feeding ecology, habitat associations, and population genetics. This would enable first steps towards its effective conservation and management strategies.
14
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Successful surgical treatment in a patient with a giant pituitary macroadenoma accompanied by obstructive hydrocephalus

39%
Rawska A., Salek M., Nowakowska M., Bak M., Jamroz-Wisniewska A., Rejdak K.
Journal of Pre-Clinical and Clinical Research
|
2019
|
tom 13
|
nr 3
15
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Rare cause of rapidly progressive dementia – Creutzfeldt-Jakob disease (CJD) with negative 14-3-3 protein – Case Report

39%
Bak M., Jamroz-Wisniewska A., Nowakowska M., Ciesielka M., Salek M., Rawska A., Rejdak K.
Journal of Pre-Clinical and Clinical Research
|
2019
|
tom 13
|
nr 3
16

Alcathoe bat (Myotis alcathoe) in the Czech Republic: distributional status, roosting and feeding ecology

27%
Lucan R. K., Andreas M., Benda P., Bartonicka T., Brezinova T., Hoffmannova A., Hulova S., Hulva P., Neckarova J., Reiter A., Svacina T., Salek M., Horacek I.
Acta Chiropterologica
|
2009
|
tom 11
|
nr 1
Between 2001 and 2008, we recorded Myotis alcathoe at nine sites within three distant areas in the Czech Republic. The species identification was confirmed with cyt b sequences and four distinct haplotypes were identified. All the localities exhibit surprisingly uniform habitat characteristics: (1) old full-grown oak-hornbeam forests, with (2) numerous large trees in advanced stages of decay are present, and (3) a very small to large water bodies and/or patches of riparian vegetation surrounded by the forest. Using radiotracking techniques, we discovered 27 day roosts of M. alcathoe, located mostly in big oak, birch and lime trees inside extensive forest stands. All roosts were fissures or small cavities in a tree trunk and in branches in the canopies, some 16 m above the ground. Bats preferred trees that were higher, had higher canopy and canopy basement and had larger diameter at breast height than other available trees. Roost trees were surrounded by lower trees with lower canopy basements than available trees. Roost trees were in a poorer condition than other available trees. Roosts were occupied by up to 83 individuals in July but usually single individuals were found in the roosts in September. In contrast to syntopic M. mystacinus and M. brandtii, M. alcathoe has never been found in an anthropogenic roost (except for a fissure in concrete electricity pole). Preliminary analysis of the diet showed that nematoceran flies were the most important prey item along with spiders, caddis flies, small moths and neuropterans. In the observed ecological characteristics, M. alcathoe markedly differs from other European species of the genus Myotis. Its restricted habitat requirements are perhaps responsible for an islet-like pattern of its distribution and suggest an essential conservation value of the habitats of its occurrence.
17

Foraging habitat, home-range size and diet of a Mediterranean bat species, Savi's pipistrelle

27%
Kipson M., Salek M., Lucan R., Uhrin M., Maxinova E., Bartonicka T., Andreas M., Kipson K., Pusic A., Rnjak D., Naďo L., Horacek I.
Acta Chiropterologica
|
2018
|
tom 20
|
nr 2
The Mediterranean is considered one of the richest biodiversity regions in Europe, and bats contribute to this species richness. Within the last two decades, certain bat species traditionally considered as representatives of the Mediterranean have spread northwards and colonized areas outside this region. In our study, we focused on ecological requirements of one of these bat species, the Savi's pipistrelle (Hypsugo savii). We used radio-telemetry and diet analysis to describe habitat use, home-range size and diet composition of reproductive females of Savi's pipistrelle in the traditional core of its distribution range in the Mediterranean region. Our results indicate that Savi's pipistrelle is able to fly long distances and utilize a wide range of habitats within its home-range, with affinities for particular habitats depending on its reproductive status. In particular, pregnant females favoured rocky pastures and forest areas, followed by meadows and riparian habitat, whereas the affinity for riparian habitat increased in lactating females, followed closely by meadows, forest and rocky pastures. The larger affinity for riparian habitats during lactation might indicate its importance for successful rearing of young, which could be influenced in the future by increasing droughts and water shortage in the Mediterranean region. Nevertheless, based on our radio-telemetry and diet analysis the species shows a high degree of flexibility, as an opportunistic forager that flies across large areas on a nightly basis, which may be a good predisposition for colonizing new areas.
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