Wyniki wyszukiwania - Biblioteka Nauki

1

Rearing beef cattle in lowland regions on joint pastures with sheep

100%

Zizlavsky J. , Horak F. , Zizlavska S.

Zeszyty Naukowe Akademii Rolniczej we Wrocławiu. Konferencje

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1996

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tom 12

2

Polish investigations on river hydromorphology

75%

Lewandowski P.

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nr 4

EN

The Water Framework Directive (WFD) introduced the obligation to monitor hydromorphological elements of rivers, including hydrological regime, river continuity, and riverbed morphology. It is estimated that by the year 2015 all uniform water bodies in the EU will be ensured at least very good (class I) or good (class II) ecological status plus good ecological potential. European standards define requirements concerning slightly different quality indices as well as methods of their assessment in such studies. In Poland, hydrological valuation has been realized since the early 1990s using different research methods. Within the framework of appraisals applied at that time, the requirements of the WFD, adopted later, were not always considered. This paper presents results of an analysis conducted on the basis of the findings of all studies of the hydromorphological status of Polish rivers conducted and published in 1995-2008. From 2,202 km of watercourses, in which scoring was applied for selected quality elements, a total of 1,588 km, uniform in terms of methodology, were selected from 35 rivers. Statistical analysis determined the distribution of results for analyzed quality elements, constituting the foundation for a new method of hydromorphological monitoring of rivers, adapted to the requirements of the WFD. Moreover, our paper also presents a review of developed research methods for the hydrological valuation of watercourses, applied in Poland and Europe.

3

Phaeophyscia endophoenicea [Ascomycota, Physciaceae] in Polish lowlands

63%

Kubiak D.

Polish Botanical Journal

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2010

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tom 55

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nr 1

223-228

4

The genetical types of caves in the Polish lowlands

63%

Urban J. , Ciborowski T. , Paternoga J. , hercman H. , Sujka G.

Nature Conservation

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2007

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tom 63

85-94

5

Fish selection by riverine Eurasian otters in lowland England

63%

Grant K. R. , Harrington L. A.

Acta Theriologica

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2015

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tom 60

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nr 3

6

Evaluation of criteria of the extent of soil degradation in the vicinity of workings of open cast brown coal mines situated on the central Polish Lowland

63%

Mocek A. , Owczarzak W. , Kaczmarek Z.

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tom 51

EN

In the result of geomechanical transformations associated with the activity of open cast brown coal mining, some changes in air-water relations may occur on arable land adjacent to these regions usually referred to as hvdrological alterations. However, they do not always need to result in soil degradation, i.e. in the deterioration of their production potentials. This will often depend on the distance of fields from the workings, value of the arable land (soil quality class), type of water management, etc. On the basis of long-term studies carried out in the area of operation of two brown coal mines - KWB "Konin" and "Adamów" - on arable land and grasslands of over 60 villages on the total area of 30 thousand hectares it was possible to develop evaluation criteria for the extent of soil degradation and work out principles for compensation payments for farmers. Three zones and appropriate sub-zones of soil susceptibility to drainage were determined and clear and simple criteria for the estimation of the extent of arable land and grassland degradation were worked out. Furthermore, the authors proposed simple and readable systems to calculate compensatory payments to be paid to farmers taking into account the state of soil degradation, value of agricultural land (price of 1 ha of land of appropriate class) and the area of damaged land. The degree of soil degradation, both of arable land and grasslands, ranged from 10 to 30%. In the case of grasslands, additionally, an appropriate sum of money was allocated to compensate for sward recultivation.

7

Palaeoenvironments in the north European lowlands between 50 and 10 ka BP

63%

Kolstrup E.

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tom 38

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nr 1

8

The North Pomeranian Baltic-facing slope as a privileged area for the formation of ice-dammed lakes

63%

Karczewski A.

Quaestiones Geographicae

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1998

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tom 19-20

9

Year-to-year stability of aggregations of Viviparus viviparus [Linnaeus 1758] in littoral zone of lowland, rheophilic reservoir [Central Poland]

63%

Jakubik B.

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2003

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tom 51

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nr 1

EN

The aggregations of V. viviparus were observed in the littoral of Zegrzyński Reservoir (Central Poland), and in the outfalls of its tributaries. They were present over five years of studies (1990-1994), at the same sites. The densities of snails in the aggregations differed among the sites (from over 800 to 500 ind. m⁻² in the reservoir itself), and showed seasonal changes with maximum in summer, and minimum in spring and fall. Swarming of the snails was related to the environmental changes and biology of this species. Tendency to form bigger snail conglomerations in the mouth sections of the rivers results from continuous inflow of organic matter being food supply for these organisms.

10

The use of AFLP markers in conservation genetics - a case study on Pulsatilla vernalis in the Polish lowlands

63%

Ronikier M.

Cellular and Molecular Biology Letters

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2002

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tom 07

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nr 2B

EN

Pulsatilla vernalis is a rare species in the Polish lowlands, strongly threatened by anthropogenic disturbance of its habitats. A grave decrease in its populations has been observed during the past 60-80 years (analogous populations in Eastern Austria and the Czech Republic are almost or completely extinct). An analysis of the genetic diversity of populations in the Polish lowlands was performed to estimate its level and distribution. The AFLP method was used for the study of seven populations. An analysis using five pairs of selective primers revealed 446 scorable fragments; 62.1% of them were polymorphic. The average gene diversity indices was 0.17 (the mean value for all the populations), ranging from 0.139 to 0.204. A weak relationship between diversity and population size was revealed. Most of the genetic diversity was contributed to by the within-population level (AMOVA) and only a weak geographical structure was shown by UPGMA clustering. Four populations formed population-specific clusters while three others (from one region) were intermixed. These preliminary results show a moderate genetic diversity of the studied populations, which was still rather high when compared with their size. This result, together with the low between-population differentiation in the region, suggests that these populations are the remnants of larger populations that, only a few decades ago, were much less isolated.

11

Morphogenesis of the Znin channel as an example of a subglacial channel of complex origin in the Polish lowland

63%

Niewiarowski W.

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tom 03

12

Textural features and petrography of glacial sediments in the southern Great Poland Lowland [Wloszakowice]

63%

Gorska M.

Quaestiones Geographicae

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1998

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tom 19-20

13

Mountain vascular plants in the Polish lowlands

63%

Zajac M.

Polish Botanical Studies

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1996

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tom 11

14

Sukcesja roślinna na odłogowanych gruntach ornych

51%

Kostuch R.

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2003

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tom T. 3, z. 2

57--78

PL

Na podstawie ponad 10 lat badań i obserwacji przedstawiono sukcesję roślinną na odłogowanych gruntach ornych w warunkach niżu i terenów górskich w Polsce. Stwierdzono, że tempo sukcesji roślinnej w górach jest szybsze niż na niżu. W warunkach odłogowania gleb bardziej wilgotnych już w początkowym stadium sukcesji dominują trawy. Początkowe stadium sukcesji w górach trwa krócej (2 lata) niż na niżu (4 lata). W górach w początkowym stadium sukcesji dominują trawy a na niżu - rośliny dwuliścienne. Na proces sukcesji wpływa też rodzaj przedplonu; po uprawie zbóż szybciej wkraczają trawy, a po okopowych dwuliścienne. W stadium optymalnym sukcesji trawy eliminują rośliny dwuliścienne. Siewki drzew szybciej zasiedlają odłogowane grunty po uprawach okopowych niż zbóż. W górach młody las tworzy się po 5-6 latach odłogowania, a na niżu po 8-10 latach.

EN

On the base of more than 10 years long studies and observations of the fallowed arable lands in lowland and mountain regions in Poland the author presents the course of plant succession. Plant succession was found to proceed faster in the mountain region than in lowlands. This results first of all from better soil moisture, and preferences for grass development. Therefore, the initial stage of plant succession in mountain regions is shorter (2 years) than on lowlands (4 years). In the mountains the first stage of plant succession is dominated mainly by grasses and on lowlands - by dicotyledons. On the running the plant succession influences also forecrop. Grasses develop faster after harvesting cereals while dicotyledons - after root crops. The grasses eliminated many dicotyledon species from plant communities at the beginning of the second stage (optimal) of plant succession. Selfafforestation of fallowed arable lands proceeds faster after root crop tillage than cereals. After 5-6 years in the mountains and 8-10 years on lowlands we have already the young forest.

15

Reactions of oribatid mites (Acari: Oribatida) to changed forestry methods in the lowlands of northeastern Germany

51%

Kreibich E. , Alberti G.

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nr 2

16

Soil environment of Pulsatilla vernalis (L.) Mill. at selected sites in the Polish lowland

51%

Grzyl A. , Niewiadomski A. , Woziwoda B.

Acta Societatis Botanicorum Poloniae

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2013

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tom 82

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nr 4

EN

The paper presents soil conditions of Pulsatilla vernalis in the Polish lowland. There were determined species preferences in relation to physical and chemical properties, grain size composition and the type of soil. It has been found that P. vernalis prefers very poor sandy, acid, dry and permeable soils, with small water capacity. The range of habitat parameters at the lowland sites differs, however, from the conditions at the mountain sites. Due to specific habitats of the species, new ecological indicator values were proposed for the lowland sites of P. vernalis. The results of soil analysis presented in this paper, as well as other data related to biology of the species, should be accounted for in the active protection plan, including the processes of reintroduction and introduction of the species.

17

Electrosaving system of stable management of crop cultivation in highlands and lowlands

51%

Veranyan G. , Mkhoyan A. , Tokmajyan V. , Bayunts H.

Budownictwo o Zoptymalizowanym Potencjale Energetycznym

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2018

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tom Vol. 7 Nr 2

Bibliogr. 4 poz.

EN

Agriculture is one of the strategic spheres of the economy in highland and lowland regions, the main impact of its development by farmers is the management of stable regimes of cultivating crops. Nowadays in Armenia and Artsakh, agriculture develops mainly due to enlarging mostly agricultural crop lands. As a means of solving the main task, one method of calculating the parameters of irrigation regimes is suggested in the case of drip and sprinkle irrigation.

18

Seasonal activity patterns of seven vespertilionid bat species in Polish lowlands

51%

Ciechanowski M. , Zajac T. , Zielinska A. , Dunajski R.

Acta Theriologica

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2010

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tom 55

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nr 4

EN

Data on seasonal dynamics of bat activity in central Europe are scarce, mostly restricted to either summer period or autumn swarming. Few studies provide extensive interspecific comparisons of temporal activity patterns. Through broadband ultrasound detection, temporal variation of flight activity was studied in seven insectivorous bat species in N Poland for the first time. Seasonal activity pattern ofMyotis daubentonii (Kuhl, 1817) was clearly bimodal with the higher peak of activity in April and the second, smaller peak in August–September. The first peak is possibly associated with post-hibernal restoration of fat reserves, while the second one might result either from pre-hibernal fat accumulation, increase in energy demands of males during spermatogenesis or from dispersal of newly weaned juveniles. The highest flight activity ofNyctalus, Eptesicus andPipistrellus bats was noted in summer months, reflecting mainly an increase in energy demands between pregnancy and lactation. However, a distinct, second peak in activity ofN. noctula appeared at the end of September, probably matching the late migration wave of individuals from E Europe. The cluster analysis of species’ activity patterns reflected division on different hunting tactics, but not migratory behaviour.

19

Degradation of chitin in natural environment: role of actinomycetes

51%

Swiontek B. M. , Lalke-Porczyk E. , Donderski W. , Walczak M.

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nr 2

229-238

EN

The actinomycetes in water samples and bottom sediments of lowland, eutrophic lake as well as in soil (farmland, sandy) of the lake basin were studied. Chitin-degrading actinomycetes were isolated (with a plate technique) from each habitat; subsequently, their chitinolytic activity (with the fluorometric method) was determined in relation to temperature (10–50°C) and the physical type of chitinous substance (colloidal chitin, chitin powder, and shrimp shells). This study demonstrated that actinomycetes were the most abundant in soil samples (average of 18 × 10³ CFU g⁻¹ in farmland soil, 9 × 10³ CFU g⁻¹ in sandy soil), and the least abundant in water samples (average of 2.7 × 10¹ CFU mL⁻¹ in lake water at neutral pH, 0.6 × 10¹ CFU mL⁻¹ in lake water with alkaline pH). The highest percentage of chitinolytic actinomycetes was observed in soil (average of 80% in sandy soil and 85% in farmland soil). Chitinolytic actinomycetes also made up a large fraction of total actinomycetes in water samples (average of 73%). In silt and sandy sediments, percentages of chitinolytic actinomycetes equaled 23 and 15%, respectively. Actinomycetes collected in soil were characterized by the highest activity (average of 14 nmol MUF mg⁻¹ of protein h⁻¹ in farmland soil, 8.5 nmol MUF mg⁻¹ protein h⁻¹ in sandy soil). The lowest activity was observed among benthic actinomycetes (average of 5.4 nmol MUF mg⁻¹ of protein h⁻¹ in silt, 0.65 nmol MUF mg⁻¹ protein h⁻¹ in sandy sediments). The impact of temperature and the type of chitinous substrate on the activity of chitinases produced by actinomycetes demonstrated that their activity peaked at 40°C and in the presence of colloidal chitin. Observed differences in actinomycetales number and activity in the lake and the soil may be explained by higher accumulation of chitin substances in the soil. This polymer allows microorganisms to continually synthesize chitinolytic enzymes and take active part in that compound decomposition.

20

Taxonomical revision of selected pollen and spores taxa from Neogene deposits

51%

Ziembinska-Tworzydlo M. , Grabowska I. , Kohlman-Adamska A. , Skawinska K. , Slodkowska B. , Stuchlik L. , Sadowska A. , Wazynska H.

Acta Palaeobotanica. Supplementum

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1994

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tom 01