Wyniki wyszukiwania

1

Wader ringing at the Vistula mouth [Baltic Coast, Poland] - a summary of the long-term studies

100%

Gromadzka J.

The Ring

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1998

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tom 20

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nr 1-2

2

The Tatra chamois Rupicapra rupicapra tatrica Blahout, 1971 - environmental and population changes, from the Pleistocene until the present time

84%

Jamrozy G.

Nature Conservation

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2006

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tom 62

53-62

3

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Habitat conditions of the endangered species Salix myrtilloides in Eastern Poland

84%

Serafin A., Pogorzelec M., Banach B., Mielniczuk J.

Dendrobiology

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2015

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tom 73

Changes in habitat conditions in the area of Eastern Poland (Polesie Podlaskie), often associated with anthropopressure, cause a reduction in the number of locations and population size of valuable and rare bog plant species, including a Pleistocene boreal relict, Salix myrtilloides. The aim of this study was to determine the current conditions of occurrence of this species based on the physico-chemical parameters of peatland piezometric groundwater. The results confirm the declining trend in the number of locations and abundance of this species in the past few decades, but at the same time they confirm the wide range of amplitude of the many investigated factors. Among the groundwater parameters studied, the low level of nitrogen fractions, phosphorus fractions, cations, and DOC can be considered to be a set of conditions promoting the preservation of the Salix myrtilloides population. The higher concentrations of phosphates, sulfates, Na, Ca, and Mg as well as higher pH and electrolytic conductivity can be considered to be presumably unfavorable. The lack of significant differences in the values of the piezometric water factors investigated for the sites with different population sizes of the studied species requires the identification of other limiting factors and the implementation of programs for its active protection in Poland.

4

Seasonal home range shift of red deer in a forest-agriculture area in Southern Hungary

84%

Szemethy L., Matrai K., Biro Z., Katona K.

Acta Theriologica

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2003

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tom 48

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nr 4

A long-term radiotelemetry study on red deer Cervus elaphus Linnaeus, 1758 was carried out in a lowland forest-agriculture area in Hungary between 1993-2000. Previous observations suggested seasonal changes in population distribution between forested and agricultural habitat. Red deer concentrated in the forest during winter, but they appeared in the agricultural field during the vegetational period. We investigated the ranging behaviour, testing two alternative hypotheses: home range expansion and home range shift. Weekly radiotelemetry localisations revealed that 9 of 28 hinds showed a clear home range shift from the forest to the agricultural area for a prolonged time during the vegetational period. The remaining portion of the animals used a home range within the forest throughout the entire year. Diet composition analysis using indicator plant species showed that neither daily passages between habitats, nor home range expansion exists. These ranging behaviours were stable hence, if an animal shifted one year it shifted again in consecutive years and vice versa. Our results could be useful for the successful management of red deer populations in such complex habitats and to decrease agricultural damage.

5

Cerasus fruticosa Pall. (Rosaceae) in the region of Kujavia and South Pomerania (N Poland)

84%

Boratynski A., Lewandowska A., Ratynska H.

Dendrobiology

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2003

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tom 49

Cerasus fruticosa is a rare and endangered plant species in Poland. In northern part of the country it occurs on scattered localities of relic, early Holocene (preboreal) character. Most of the species stands known from the end of 19th century have disappeared in the last decades. All data, revised in the field 40 years ago, were checked in 2000-2002. The species survived on 6 localities of 14 ones, confirmed in sixteenth. The hybridization between C. fruticosa and C. vulgaris is one of the main reasons of extinction of the first species. The floristic composition of plant communities with C. fruticosa was examined and compared with relevant literature. The regression of photophilous and thermophilous plant species, characteristic for associations with C. fruticosa and moderate invasion of synanthropic ones were observed.

6

Betula humilis Schrank in the Calowanie" fen distribution dynamics, habitat changes and survival chances of the species in degraded peatland

67%

Jablonska E., Pawlikowski P.

Teka Komisji Ochrony i Kształtowania Środowiska Przyrodniczego

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2004

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tom 01

7

Effect od patch size on habitat loss in sedge warblers Agrocephalus schoenobaenus in the Middle Nida Wetlands [southern Poland]

67%

Bielanski W., Solarz W., Zajac T.

Nature Conservation

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2005

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tom 61

43-51

8

Biology and fishery of barred spiny eel, Macrognathus pancalus Hamilton

67%

Suresh V. R., Biswas B. K., Vinci G. K., Mitra K., Mukherjee A.

Acta Ichthyologica et Piscatoria

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2006

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tom 36

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nr 1

Background. The barred spiny eel, Macrognathus pancalus Hamilton 1822 (known also as the striped spiny eel) has high food- as well as ornamental value in India and its neighbouring countries. The natural resources of this species are declining due to over exploitation and habitat changes. The aim of this study was to provide necessary inputs on food habits, reproductive biology, and fishery of the species for artificial propagation programs and fisheries guidelines for conservation of its natural populations. Materials and Methods. Fish samples were collected monthly, for a period of 12 months, from an oxbow lake, situated in the Ganga River basin, India, during June 2004-May 2005. Food habits, reproductive biology, length-weight relation, fishery resource status, asymptotic length (L∞), length at maturity (Lm) and length at maximum possible yield (Lopt) for the species were studied. Results. The fish subsisted mainly on insect larvae. Fecundity range was 227 (fish: 10.7 cm and 5.03 g) to 8310 (fish: 17 cm and 30.31 g). Length at first maturity calculated through maturity curve was 10-11 cm (males) and 11-12 cm (females) in total length. The breeding period was within March-September. The regression model fitted for length and weight of the fish was Log W = 3.3224 Log L - 6.0793, R2 = 0.9094 for male; Log W = 3.3378 Log L - 6.0716, R2 = 0.9183 for female. The exponent ‘b’ for male and female varied significantly from ‘3’ indicating allometric growth pattern. The relation of fecundity with total length and weight of the fish was Log F = 2.9574 Log L - 3.2055, R2 = 0.3728 and Log F = 0.9684 Log W + 2.0934, R2 = 0.4716. Immature specimens dominated in the catch. The estimates obtained for L∞ = 18.8 cm (s.e. range 15.9-22.3 cm), Lm male = 10.8 cm (s.e. range 7.7-15.1 cm), Lm female = 12.3 cm (s.e. range 9.3-16.3 cm) and Lopt = 11.3 cm (s.e. range 9.6-13.4 cm). Biomass of the species in experimental fishing was high during October-January, which was also the period when immature specimens were lowest. Conclusion. Closed or less intense fishing for the species during March-September and capture of only specimens above 14 cm length would help conservation of the natural stock of the fish in the wetland.

9

Morpho-physiological characteristics of Tetrahymena rostrata [Ciliata]. I. Changes during establishment of laboratory strains

67%

Oleszczak B., Szablewski L.

Acta Protozoologica

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1992

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tom 31

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nr 1

10

Feeding habits and trophic niche overlap in a Carnivora community of Hungary

67%

Lanszki J., Kormendi S., Hancz C., Zalewski A.

Acta Theriologica

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1999

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tom 44

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nr 4

The seasonal feeding habits of the red fox Vulpes vulpes (Linnaeus, 1758), the stone marten Martes foina (Erxleben, 1777), the stoat Mustela erminea Linnaeus, 1758, the badger Meles meles (Linnaeus, 1758) and the otter Lutra lutra (Linnaeus, 1758) were studied in south-west Hungary, in the course of four years. The habitat conditions, because of human influences, were different in the first and second two years. Diet was examined by scat analysis (238, 262, 67, 50 and 1033 samples, respectively). Small mammals, mainly rodents, were the most important prey for foxes, stone martens and stoats in winter and spring. In summer and autumn insects and fruit were added to fox and marten diet, while birds were added to stoat diet. The badger's main food resources were invertebrates (mainly insects) and maize and, in autumn, rodents. Domestic animals (mainly poultry and rabbit) occurred in the diet of the foxes and martens in all seasons, carcasses (mainly Cervidae) in the diet of these predators and in that of the badgers. The predominant prey of otters was fish, but when the abundance of fish declined, the consumption of amphibians increased. Predation on game birds and hare was not significant. In all seasons, niche overlap was high between foxes, martens and stoats. Niche overlap between these species and the badger increased from spring to autumn. Niche overlap between terrestrial predators and the otter was low. The diet of predators were different between the 1st and 2nd periods.

11

Effects of alterations in freshwater supply on the abundance and distribution of Engraulis encrasicolus in the Guadiana estuary and adjacent coastal areas of South Portugal

67%

Chicharo L., Chicharo M. A., Esteves E., Andrade J. P., Morais P.

International Journal of Ecohydrology and Hydrobiology

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2001

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tom 01

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nr 3

A reduction of inflow to the Guadiana River on the border between Portugal and Spain may directly contribute to the degradation of fish habitats. Changes are expected to the spawning behaviour of Engraulis encrasicolus adults, to the migration patterns of larvae in the estuary, and to the catches of fisheries in the lower part of the river and adjacent coastal areas. Spawning of E. encrasicolus occurs in the lower part of the estuary and in the adjacent coastal areas. However, high abundances of larvae have been registered in the middle and upper parts of the estuary, the most productive region of the estuary, that with the estuarine turbidity maximum (ETM). In a year of normal inflow, such as the hydrologic year 1987–1988, some retention of larvae occurred in this area. However, in an abnormal hydrologic year with a low inflow (1999–2000), and with an increase in freshwater inflow during the spring months, a disturbance to the migration pattern seems to have affected the survival of larvae in the estuary. High river inflow, probably associated with an increased input of nutrients, appears to have an important and positive effect on adult numbers, because anchovy fishery catches in the adjacent coastal area increased under these conditions.

12

Zmiany warunkow siedliskowych i roslinnosci rezerwatu halofitow 'Owczary'

59%

Kostuch R., Misztal A.

Acta Scientiarum Polonorum. Formatio Circumiectus

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2006

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tom 05

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nr 1

113-122

Ograniczanie wyników

Wader ringing at the Vistula mouth [Baltic Coast, Poland] - a summary of the long-term studies

The Tatra chamois Rupicapra rupicapra tatrica Blahout, 1971 - environmental and population changes, from the Pleistocene until the present time

Habitat conditions of the endangered species Salix myrtilloides in Eastern Poland

Seasonal home range shift of red deer in a forest-agriculture area in Southern Hungary

Cerasus fruticosa Pall. (Rosaceae) in the region of Kujavia and South Pomerania (N Poland)

Betula humilis Schrank in the Calowanie" fen distribution dynamics, habitat changes and survival chances of the species in degraded peatland

Effect od patch size on habitat loss in sedge warblers Agrocephalus schoenobaenus in the Middle Nida Wetlands [southern Poland]

Biology and fishery of barred spiny eel, Macrognathus pancalus Hamilton

Morpho-physiological characteristics of Tetrahymena rostrata [Ciliata]. I. Changes during establishment of laboratory strains

Feeding habits and trophic niche overlap in a Carnivora community of Hungary

Effects of alterations in freshwater supply on the abundance and distribution of Engraulis encrasicolus in the Guadiana estuary and adjacent coastal areas of South Portugal

Zmiany warunkow siedliskowych i roslinnosci rezerwatu halofitow 'Owczary'

Betula humilis Schrank in the Calowanie" fen distribution dynamics, habitat changes and survival chances of the species in degraded peatland