Wyniki wyszukiwania

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Diet composition and spatial patterns of food caching in wintering Great Grey Shrikes [Lanius excubitor] in Bulgaria

100%

Nikolov B. P., Kodzhabashev N. D., Popov V. V.

Biological Letters

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2004

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tom 41

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nr 2

119-133

2

Klab zimowy - sposob na przetrwanie

100%

Wrobel S.

Biuletyn Informacyjno-Handlowy. Ośrodek Doradztwa Rolniczego Boguchwała

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1997

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nr 12

5-6

3

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Overwintering of the apple rust mite Aculus Schlechtendali (Nal.) (Acarina: Eriophyoidea)

100%

Kozlowski J., Boczek J.

Prace Naukowe Instytutu Ochrony Roślin

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1987-1988

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tom 29

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nr 1

4

Effect of the ploughing depth and the weed control method on the winter oilseed rape yield

100%

Jankowski K. J., Budzynski W. S.

Acta Scientiarum Polonorum. Agricultura

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2003

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tom 02

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nr 1

The effect of differentiated pre-sow ploughing depth (30, 20 and 10 cm) and weed control method (mechanical, chemical, combined mechanical and chemical) on the overwintering, weed infestation, yield and quality of seeds of oilseed rape was tested. Shallower ploughing worsened the main traits of the autumn condition of rape plants. Rape plants treated chemically had better-formed rosettes than those treated mechanically. Ploughing made to the depth of 30 and 20 cm did not significantly differentiate the yield of rape plants. However, a significant decrease (9-13%) in the yield occurred when the ploughing depth went down to 10 cm. The highest yield was obtained from the rape controlled chemically against weeds. The yield-protective effect of the combined mechanical and chemical weed control was comparable to that of mechanical method.

5

Microbiological studies of carp [Cyprinus carpio L.] fingerlings wintered in cooling waters

100%

Zmyslowska I., Guziur J., Wozniak M., Harnisz M.

Archives of Polish Fisheries

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2002

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tom 10

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nr 1

The study was carried out in the winter of 1999/2000 at the fishing base of the Olsztyn Fishing Farm. The base was comprised of 48 fish cages (15 m³ each) suspended in a post-cooling water canal of the Ostrołęka thermal-electric power station. During the 190 days of observations (31 October 1999 - 15 May 2000), the following factors were analysed: bacteriological contamination of skin, muscle and gastric contents of carp fingerlings produced in cages from summer fry (July fry; 3-5 g body weight). Bacteriological analyses consisted of determining the total count of bacteria cultured on agar (TVC 20 °C and TłVC 37°C), the total count of colic bacteria (Escherichia coli) on Endo medium (Enterobactriacea) and bacteria that is potentially pathogenic to fish and humans (Aeromonas hydrophila, Pseudomonas fluorescens, P. aeruginosa, Staphylococcus aureus). The identification of microorganisms was carried out using the biochemical tests Api 20 NE, Api 2E and Api Staph (bioMérieux). Statistical analysis showed significant differences in the number of all the bacteria assayed between the muscle tissue versus digestive tract and skin mucus. The counts of all the groups of bacteria determined in the carp were permissible and did not exceed Polish hygiene norms.

6

Comparison of different honeybee races under the conditions of South-Western Finland

100%

Honko S., Jasinski Z.

Journal of Apicultural Science

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2002

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tom 46

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nr 2

7

Healthfulness of honeybee colonies [Apis mellifera L.] wintering on the stores with addition of honeydew honey

100%

Pohorecka K., Skubida P.

Bulletin of the Veterinary Institute in Puławy

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2004

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tom 48

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nr 4

8

Comparison of different methods to measure the infestation level of wintering honeybee colonies by the spores of Nosema apis Z.

100%

Pohorecka K., Muszynska J.

Pszczelnicze Zeszyty Naukowe

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1996

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tom 40

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nr 1

9

Habitat use and hunting behaviour of Common Buzzards Buteo buteo wintering in south-western Poland

84%

Wuczynski A.

Acta Ornithologica

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2005

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tom 40

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nr 2

147-154

During seven winter seasons (1993/1994-1999/2000) 107 roadside counts (28 km each) in agricultural area of south-western Poland were conducted. From among 1526 Buzzards, 1293 were recorded in winter months (November-February) and 233 in March. Birds were non-randomly distributed on nine vegetation types met along the transect route. Permanent papilionaceous crops, along with cereal stubbles, margin habitats, meadows and maize stubbles were preferentially used, whereas bare tillage and winter cereals were avoided. In general, Buzzards preferred habitats of the least amount in the studied area and avoided those which dominated. These data support the idea of high importance of small landscape structures for the biodiversity protection in intensively used farmland. During winter months, most Buzzards (59.5%) were perched when first sighted, most often on trees and in the middle part of their height. The percent of birds sitting on the ground amounted to 34.7%. The smallest amount of individuals (5.8%) was observed flying (flap-sailing, hovering and soaring), however this activity significantly increased in March (up to 17.1%). The significance of various hunting methods for wintering Buzzards is discussed. Even though it is a typical perch hunting raptor, the method of hunting from the ground seems to be particularly suitable for the conditions of winter farmland: common scarcity of perches, poor and low vegetation, local and temporary prey concentrations.

10

Home range and habitat use by Aquatic Warblers Acrocephalus paludicola on their wintering grounds in Northwestern Senegal

84%

Arbeiter S., Tegetmeyer C.

Acta Ornithologica

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2011

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tom 46

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nr 2

The Aquatic Warbler Acrocephalus paludicola was once a common breeding bird in mesotrophic fen mires all over Central and Western Europe. In the last century large parts of its habitat have been destroyed by wetland drainage and agricultural intensification. Besides protecting the remaining breeding habitats, it is of great importance to preserve suitable migration stopover habitats and wintering grounds to avert the extinction of the species. We determined home-range size and the use of vegetation associations of Aquatic Warblers on the wintering grounds in a flooded plain north of the Djoudj National Park in Senegal. Individual birds (11) were caught in mist nets and equipped with radio transmitters. Locations were assessed by radiotelemetry and a compositional analysis was conducted to determine which vegetation types were preferred within home ranges. Similar to their behaviour on the breeding grounds, the Aquatic Warblers showed no territorial behaviour in their winter quarters. They used home ranges that averaged 4 ha in size, which they shared with conspecifics and other warblers. The home ranges overlapped 54% on average, with a maximum of 90% in an area used by four individuals. The vegetation structure of the wintering habitat is similar to breeding grounds and stopover sites of the species. Preferential vegetation had 80% to 100% cover and consisted of 60 to 90 cm high stands of Oryza longistaminata, Scirpus maritimus or Eleocharis mutata. Most birds stayed more often near the edge of open water, probably for foraging. A constant inundation seems essential, because Aquatic Warblers never occurred in desiccated parts of the study site.

11

Fidelity to roost sites and diet composition of wintering male urban Common Kestrels Falco tinnunculus

84%

Riegert J., Fuchs R.

Acta Ornithologica

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2011

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tom 46

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nr 2

During harsh winters, partially migratory raptors face to making a decision whether leave their breeding sites or not. However, decision to leave brings advantages for maintaining own body condition, but also disadvantages for further reproduction. We studied individual variability in fidelity to roost sites during two winters. The kestrel males in České Budějovice (Southern Bohemia) roost near their breeding sites for most of the winter. Individuals occupy the same roost site continuously, unless they temporarily leave the city. We collected pellets at the males' roost sites from November to April in 1996/1997 and 1997/1998. We analysed the factors that affect males' presence (proportion of days with snow cover — PSC, snow depth and mean temperature). There were fewer absences, overall, in 1997/1998 than in 1996/1997, probably due to milder weather conditions, and better prey availability. Individuals responded differently to periods of snow cover; some males left the city but others remained. Males that remained had a higher proportion of non-vole prey (birds, insectivors and insects) in their diet compared to those that left. Moreover, the proportion of birds in diet was positively correlated with PSC in males that stayed at roost sites during the period with snow cover. We suggest that males able to feed on birds during snow cover could remain in the city in harsh winters, and this would give them an advantage during competition for breeding sites in the following spring.

12

Morphometric characteristic of the caecum in long-tailed ducks Clangula hyemalis wintering on the Polish Baltic coast

84%

Dziala-Szczepanczyk E.

Electronic Journal of Polish Agricultural Universities. Series Biology

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2006

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tom 09

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nr 4

13

An attempt to compare two methods to determine population size of pine foliophages wintering in forest litter

84%

Korczynski I., Remenda K.

Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria

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2007

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tom 06

|

nr 2

14

How many individuals survive winter in intact colonies of Apis mellifera L. [Hymenoptera, Apidae] ?

84%

Ptacek V., Cermak K.

Pszczelnicze Zeszyty Naukowe

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2000

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tom 44

|

nr 2

15

Wintering of the White Storks [Ciconia ciconia] in Bulgaria

84%

Nankinov D. N.

The Ring

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1994

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tom 16

|

nr 1-2

16

Sanitary and bacteriological studies of water and European catfish [Silurus glanis L.] during wintering

84%

Golas I., Lewandowska D., Zmyslowska I., Teodorowicz M.

Archives of Polish Fisheries

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2002

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tom 10

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nr 2

Sanitary and bacteriological studies were conducted during European catfish (Silurus glanis L.) wintering from January 3, 2001 to March 7, 2001. Samples of water, skin and digestive tract contents were collected every two weeks. Qualitative analyses included culturing heterotrophic bacteria on a broth-agar medium at temperatures of 4ºC for 7 days of incubation (TVC 4ºC), 22°C for 72 hours of incubation (TVC 22°C) and 37°C for 24 hours of incubation (TVC 37° C). The total number of coliforms (TC), the total number of fecal coliforms (FC) and the total number of fecal streptococci (FS) were determined. The results obtained confirmed that the sanitary and bacteriological state of the water in the wintering pond was good. The number of microbes per cm² of skin varied from 10³ to 10⁴ , and in 1 g of digestive tract contents from 10³ to 10⁵ .

17

Studies of Colletotrichum gloeosporioides Penz. wintering in infected shoots of yellow lupin [Lupinus luteus L.]

84%

Jeske M.

Acta Scientiarum Polonorum. Biologia

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2006

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tom 05

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nr 1-2

18

Seasonal and spatial pattern of shelter use by badgers Meles meles in Białowieża Primeval Forest (Poland)

84%

Kowalczyk R., Zalewski A., Jedrzejewska B.

Acta Theriologica

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2004

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tom 49

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nr 1

In 1997-2001, we investigated the use of day-time shelters by radio-collared badgers Meles meles (Linnaeus, 1758) in the Białowieża Primeval Forest, eastern Poland. Each social group of badgers utilised, on average, 9 different shelters per territory (range: 4-20). The main setts, occupied for breeding and winter sleep, were also most frequently used for day-time rest throughout the year (73% of days). Badgers living in the pristine oldgrowth stands utilised larger number of shelters and spent more days in hollow trees (mainly lime Tilia cordata), compared to badgers inhabiting younger secondary tree stands. Number of shelters used by individuals varied between seasons and depended on sex and age of animals. In summer, badgers used more shelters than in spring and autumn. In winter, they stayed in their main setts only. Adult males occupied more shelters and spent fewer days in the main sett than other badgers. In spring, females rearing young used only the main setts. The average underground space used by badgers within the main sett was 128 m2. It was largest in summer and smallest in winter, and also varied between males and females. We proposed that, in a low-density population, badgers used several setts and other daily shelters to reduce energy expenditure when exploring their large territories and foraging. Furthermore, setts may play a role of marking sites. Analysis of the biogeographical pattern of sett use by European badgers showed that the number of setts used by social groups increased with increasing territory size, whereas the density of setts (n setts/km2) was negatively correlated with territory size. We proposed that different factors could shape the utilisation of setts by badgers in low- and high-density populations.

19

Relative abundance and flock size of wintering Common Crossbills Loxia curvirostra L. in Western Carpathians: a habitat influence

67%

Ciach M., Bylicka M.

Polish Journal of Ecology

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2009

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tom 57

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nr 1

181-189

A study of wintering Common Crossbills (Loxia curvirostra L.) was conducted in the winter periods 2002/2003–2006/2007 in the Western Carpathians. Birds were surveyed on transects in natural mountain European beech (Fagus sylvatica L.)-Silver fir (Abies alba Mill.)- Norway spruce (Picea abies (L.) Karst.) forests of the Tatra Mts, Pieniny Mts, Babia Góra Mt. and Gorce Mts (total length 41.4 km) as well as in a habitat mosaic with Scots pine (Pinus sylvestris L.) and Mountain pine (Pinus mugo Mill.) stands in the Kotlina Orawsko-Nowotarska valley (total length 31.5 km). Birds mean density underwent annual changes from 1.9 to 15.5 ind. 10 km⁻¹ in the natural mountain forests and from 0.9 to 12.1 ind. 10 km⁻¹ in the habitat mosaic. The median flock size in the natural mountain forests was 2, and it varied from 1 to 4 in subsequent seasons. They were smaller than flocks recorded in the habitat mosaic in the valley – median 2.5 (from 2 to 7 in subsequent seasons). The size of foraging and flying flocks did not differ significantly in natural mountain forest nor in the valley habitat mosaic. In the natural mountain forests, birds preferred habitats dominated by Norway spruce, and avoided European beech-Silver fir forests. The median flock size was 2 in habitats with Norway spruce, and 8 in stands where Norway spruce was absent. The variation in bird density presumably reflected the changes in quantity and location of food resources. Birds moved within stands with varying proportions of Norway spruce in the mountains as well as between the mountains and the valley, where habitat with mosaics of Scots pine and Mountain pine dominated.

20

Migracje mszyc ze szklarni na pole i z pola do szklarni oraz miejsca zimowania tych owadow

67%

Cichocka E.

Progress in Plant Protection

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1997

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tom 37

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nr 1

105-108

Ograniczanie wyników

Diet composition and spatial patterns of food caching in wintering Great Grey Shrikes [Lanius excubitor] in Bulgaria

Klab zimowy - sposob na przetrwanie

Overwintering of the apple rust mite Aculus Schlechtendali (Nal.) (Acarina: Eriophyoidea)

Effect of the ploughing depth and the weed control method on the winter oilseed rape yield

Microbiological studies of carp [Cyprinus carpio L.] fingerlings wintered in cooling waters

Comparison of different honeybee races under the conditions of South-Western Finland

Healthfulness of honeybee colonies [Apis mellifera L.] wintering on the stores with addition of honeydew honey

Comparison of different methods to measure the infestation level of wintering honeybee colonies by the spores of Nosema apis Z.

Habitat use and hunting behaviour of Common Buzzards Buteo buteo wintering in south-western Poland

Home range and habitat use by Aquatic Warblers Acrocephalus paludicola on their wintering grounds in Northwestern Senegal

Fidelity to roost sites and diet composition of wintering male urban Common Kestrels Falco tinnunculus

Morphometric characteristic of the caecum in long-tailed ducks Clangula hyemalis wintering on the Polish Baltic coast

An attempt to compare two methods to determine population size of pine foliophages wintering in forest litter

How many individuals survive winter in intact colonies of Apis mellifera L. [Hymenoptera, Apidae] ?

Wintering of the White Storks [Ciconia ciconia] in Bulgaria

Sanitary and bacteriological studies of water and European catfish [Silurus glanis L.] during wintering

Studies of Colletotrichum gloeosporioides Penz. wintering in infected shoots of yellow lupin [Lupinus luteus L.]

Seasonal and spatial pattern of shelter use by badgers Meles meles in Białowieża Primeval Forest (Poland)

Relative abundance and flock size of wintering Common Crossbills Loxia curvirostra L. in Western Carpathians: a habitat influence

Migracje mszyc ze szklarni na pole i z pola do szklarni oraz miejsca zimowania tych owadow