63 research outputs found
30-Year-Long Changes in Terrestrial Vertebrate Fauna of Niebieskie ŹródłA (Blue Springs) Nature Reserve in Tomaszów Mazowiecki, Central Poland
The article focuses on changes in terrestrial vertebrate fauna of Niebieskie Źródła (Blue Springs) Nature Reserve that occurred between two censuses carried out in the area. The first census was carried out in the period of 1968-1970, and the second census in the period of 1998-1999. In 1998-1999 the occurrence of four species of amphibians, 41 of birds and 15 of mammals was recorded. In comparison with investigations from 1968-1970 two species of amphibians, two species of mammals, and nine species of birds were found to have disappeared from the reserve. In the census carried out in 1998 and 1999 we recorded 22 new species of vertebrates: one new species of amphibian, five species of mammals, and 16 species of birds. The recent observations showed a decline in the abundance of amphibian species in the reserve, especially in the closest vicinity to the urban development around the city of Tomaszów Mazowiecki. The quantitative data on birds showed an increase in the numbers and abundance, which was mainly pronounced in the group of forest species, especially cavity and shrub nesters. We suggest that these changes are directly related to the succession of forest vegetation and its developing vertical structure, as well as to an increase in the forestation of the reserve area
Pattern of Post-Juvenile Moult in Common Snipe (Gallinago Gallinago) and Its Implications for Ageing of the Species
External ageing of Common Snipe (Gallinago gallinago) still engenders considerable problems. To improve precision of age determination on the basis of plumage characteristics a scheme of post-juvenile moult was investigated in approximately 1200 first-year Common Snipes caught during autumn migration in central Poland. Post-juvenile moult was commenced from body feathers followed by moult of rectrices, lesser/median wing coverts and tertials. Moult sequence showed high inter-individual variability and was started in rectrices (36.9%), wing coverts (25.3%), tertials (8.4%) or simultaneously in several of these tracts of feathers (29.4%). Moult of rectrices was finished before completion of moult of wing coverts and tertials. Moult of tertials finished as the last from all age-indicative tracts of feathers. Consequently, tertials were suggested as the most useful for ageing of first-year Common Snipes in an advanced stage of moult. There was no case of moult of the outermost tertial in first-year birds. The second tertial from distal side of wing was moulted as the last one within this tract of feathers and thereby should be of special interest during plumage examination
Breeding avifauna of Prince Joseph Poniatowski Park in Łódź in 1966-2009
During 1966-2009, in 13 seasons, breeding avifauna were counted in Prince J. Poniatowski
Park (Łódź). The increase of species richness from 25 (1966) to 35 species (2009) was observed. The species started to breed in the Park were: Mallard Anas plathyrynchos, Sparrowhawk Accipiter nisus, Coot Fulica alra, Wood Pigeon Columba palumbus, Thrush Nightingale
Luscinia luscinia, Song Thrush Turdus philom elos, Nuthatch Sitta europaea, Hawfinch Coccothraustes coccothrausles, Goldfinch Carduelis carduelis, Serin Serrinus serinus. Some species disappeared as breeder: Cuckoo Cuculus canorus, Pied Wagtail Molacilla alba, Wood Warbler
Phylloscopus sibilatrix, Willow Warbler Phylloscopus trochilus, Marsh Tit Poecile palustris.
The significant increase of breeding pairs was observed for: Blackbird Turdus merula. Blackcap
Sylvia atricapilla, Great Tit Parus major. Blue Tit Cyanistes caeivleus, Finch Fringilla coelebs.Zadanie pt. „Digitalizacja i udostępnienie w Cyfrowym Repozytorium Uniwersytetu Łódzkiego kolekcji czasopism naukowych wydawanych przez Uniwersytet Łódzki” nr 885/P-DUN/2014 dofinansowane zostało ze środków MNiSW w ramach działalności upowszechniającej naukę
Variability of clutch size in Cormorant (Phalacrocorax carbo sinensis) at the Jeziorsko Reservoir (Central Poland) in 2004
The analysis of the clutch size variability in Cormorant (P. carbo sinensis) was based
on study results in colony at the “Jeziorsko Reservoir” (central Poland) in 2004. There were used
328 broods controlled 3-5 times in the season. Number of eggs in a single clutch ranged from
1 to 7, although Cormorants mostly laid 3 to 5 eggs. Mean clutch size was 3.80 (SD = 1.0 0). The
size of clutch depended on time of laying eggs and the part of colony where the nest with brood
was localised. The clutch size was bigger for pairs that started laying eggs earlier and lower for
birds bred in the part of colony where the number of nests and their density were low.Zadanie pt. „Digitalizacja i udostępnienie w Cyfrowym Repozytorium Uniwersytetu Łódzkiego kolekcji czasopism naukowych wydawanych przez Uniwersytet Łódzki” nr 885/P-DUN/2014 dofinansowane zostało ze środków MNiSW w ramach działalności upowszechniającej naukę
Breeding raptors in Łagiewniki forest in 2009-2010
Three breeding species of raptors were observed in Łagiewnicki Forest in 2009-2010
(number of breeding pairs): Common Buzzard Buleo buteo (5-6 pairs), Goshawk Accipiter gentilis
(5 pairs), Sparrowhawk A ccipiter nisus (6 - 8 pairs). In the paper, the changes in raptor’s number
during last 50 years are described and possible reasons of the changes are discussed.Zadanie pt. „Digitalizacja i udostępnienie w Cyfrowym Repozytorium Uniwersytetu Łódzkiego kolekcji czasopism naukowych wydawanych przez Uniwersytet Łódzki” nr 885/P-DUN/2014 dofinansowane zostało ze środków MNiSW w ramach działalności upowszechniającej naukę
The most important bird areas in the Łódź District
The eight areas of European or/and domestic importance for birds of Central
Poland are presented in this paper. Jeziorsko and Sulejów Reservoirs; valleys of Pilica,
Bzura, Ner and Grabia rivers; ponds in Walewice and ponds near Łowicz "Okręt” and "Rydwan” as well as Pilicka Forest and Zaięcze Landscape Park are described in the
respect of bird communities and their potential risk assessment. Criteria for identification
of other areas of local importance are proposed and 10 subsequent areas fulfilling them
are listed.Zadanie pt. „Digitalizacja i udostępnienie w Cyfrowym Repozytorium Uniwersytetu Łódzkiego kolekcji czasopism naukowych wydawanych przez Uniwersytet Łódzki” nr 885/P-DUN/2014 dofinansowane zostało ze środków MNiSW w ramach działalności upowszechniającej naukę
Shortening day length as a previously unrecognized selective pressure for early breeding in a bird with long parental care
Several different selective pressures have been
suggested to explain an intense competition for early return
to breeding grounds in birds. In this study we hypothesized
that shortening day length during summer months may
constitute additional selective force acting towards early
breeding in avian species with long parental care. To test
this hypothesis, we studied time budget and foraging
activities of early-nesting and late-nesting white storks
Ciconia ciconia from the Central-European population. We
found that duration and distance of foraging trips increased
significantly over the course of the reproductive season.
The relative frequency of foraging trips increased at the
expense of other activities, such as resting, plumage
maintenance, and nest maintenance. Mean daily foraging
duration increased with increasing day length in the early
part of the season, with 0.68 h of foraging per individual
per 13.16 h of day length in mid-April increasing to 7.42 h
of foraging per individual during solstice (16.61 h of day
length). Afterwards, mean foraging duration continued
increasing in spite of decreasing day length, reaching
11.63 h of foraging per individual per 14.92 h of day
length at the end of the season in mid-August, when storks
were forced to continue foraging after sunset in order to
meet energy requirements of fledglings. The results suggest
that shortening day length during summer months may constitute a serious time constraint on food delivery rates to offspring for late-breeding pairs of white storkEuropean Social Fund and the Polish National Budget in the
D-RIM project of the Human Capital Programm
Environmental evaluation of Łódź basing on breeding avifauna composition
The evaluation was conducted using the bird species richness and occurrence of the
key species. The key species were:
1. Species endangered globally according to IU CN/BirdLife International criteria,
2. Species of European Conservation Concern (C ategory 1-3),
3. Species from Annex I of Council Directive on the Convention of Wild Birds (79/409/EEC)
4. Species from Polish Red Animal Book,
5. Species which frequency of occurrence in Poland is < 10% according to Atlas of Breeding
Birds in Poland data,
6 . Species which number of Polish breeding population is less than 1000 pairs.
The key species breed in all kinds of habitats in Łódź. The most valuable habitats are weakly
urbanized areas of river valleys and forest habitats with old tree-stands. Among the habitats the
most endangered by changes are: river valleys and farmland areas.Zadanie pt. „Digitalizacja i udostępnienie w Cyfrowym Repozytorium Uniwersytetu Łódzkiego kolekcji czasopism naukowych wydawanych przez Uniwersytet Łódzki” nr 885/P-DUN/2014 dofinansowane zostało ze środków MNiSW w ramach działalności upowszechniającej naukę
Current knowledge of the Łódź Upland avifauna
The authors evaluated the state of the knowledge of the Łódź Upland (about
18 000 km 2) avifauna. The total of 278 bird species was recorded by authors in the study
area since the last century. After 1945, the total of 267 species were recorded, including 180
breeding species. According to the authors’ estimates about 11% of the area was investigated
more preciously. The best investigated regions are: the Bzura river valley, 219 species were
recorded including 165 breeding ones, the Pilica river valley, where the respective values are
211 and 158, region of the Jeziorsko Reservoir - 247 observed species and 152 breeding ones,
the vicinities of the locality of Rogów with 118 breeding species and the Łódź city area with
125 breeding species. The Łódź Upland has been the place o f breeding for some rare birds
in Poland: Cormorant, Purple Heron, Lesser Spotted Eagle, Hen Harrier, Montague’s Harrier,
Curlew, Ruff, Herring Gull, White-winged Tern, Whiskered Tern, Crane, Stonechat, Collared
Flycatcher, Aquatic Warbler, Bearded Tit.Zadanie pt. „Digitalizacja i udostępnienie w Cyfrowym Repozytorium Uniwersytetu Łódzkiego kolekcji czasopism naukowych wydawanych przez Uniwersytet Łódzki” nr 885/P-DUN/2014 dofinansowane zostało ze środków MNiSW w ramach działalności upowszechniającej naukę
The effect of intensive and extensive production systems on carcass quality in New Zealand White rabbits
[EN] Forty New Zealand White rabbits weaned at 30 days were divided into 2 groups and reared under intensive or extensive production system till slaughter age (90 days of age). In the extensive production system, rabbits were housed in free-standing cages on straw litter and fed farm-made feed ad libitum. Control rabbits were raised intensively in wire mesh slatted floor cages, indoors and on a commercial pellet ad libitum. Hot carcass weight was 16,6% lower (P0.05). The higher carcass weight of the control rabbits led to heavier primal cuts, including head (P0.05) and the fore part, intermediate part and hind part of the carcass (P0.01). However, expressed as % of carcass weight, a significantly higher ratio was only found for the head (P0.01) and edible offal (P0.05) in intensively produced rabbits. The production systems investigated had no significant (P>0.05) effect on the chemical composition, physicochemical properties and organoleptic characteristics of meat from New Zealand White rabbits.Daszkiewicz, T.; Gugolek, A.; Janiszewski, P.; Kubiak, D.; Czoik, M. (2012). The effect of intensive and extensive production systems on carcass quality in New Zealand White rabbits. World Rabbit Science. 20(1):25-33. doi:10.4995/wrs.2012.945SWORD253320
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