Wyniki wyszukiwania

1

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

The occurrence of the Dermacentor reticulatus tick - its expansion to new areas and possible causes

100%

Karbowiak G.

Annals of Parasitology

|

2014

|

tom 60

|

nr 1

The ornate dog tick (Dermacentor reticulatus) can be found in the temperate zones of Eurasia. Its area of occurrence is divided into east and west distributions, although the area as a whole is expanding. The initial east-west division was most probably associated with the varied climatic profile of Europe, for example, the range of specific mean winter and summer temperatures: the region where D. reticulatus is absent is characterized by mean winter temperatures between 0°C and 5°C and thin snow cover. The present expansion may be the effect of climate change. The mean temperatures in Europe have increased, the vegetation season has lengthened and positive trends in the number of wet days can be seen. Consequently, northern Europe has become warmer and wetter over the last century. human activity can also influence the spread of D. reticulatus. The liquidation of habitats suitable for D. reticulatus and the eradication of their hosts can play a role, as can changes in agricultural land use, environmental protection and the spread of international tourism and trade. In summary, the expansion of D. reticulatus into new areas could be the synergistic effect of many favourable factors.

2

Female song in birds: moving from a temperate zone bias towards a unisexual theory of song

100%

Tryjanowski P., Osiejuk T. S.

Biological Bulletin of Poznań

|

2000

|

tom 37

|

nr 1

3

Soil sand [soilarenite] and related cohesive detrital deposits: examples from a wet temperate climatic zone

100%

Teisseyre A. K.

Geographia Polonica

|

1992

|

tom 60

4

The annual cycle of molt in the Cape hare Lepus capensis in Northern China: pattern, timing and duration

100%

Lu X.

Acta Theriologica

|

2003

|

tom 48

|

nr 3

Molt is an important life history event for mammals occurring in temperate and cold zones. In the present paper, I investigate the pattern, timing and duration of seasonal molts of the Cape hares Lepus capensis Linnaeus, 1798 in northern China, by tracing and scoring the process of each molt quantitatively. All the seasonal molts in both overwintering and juvenile hares went through a similar order: midback (together with nape), flanks, belly, upper tail, and legs. Yet, there was a relatively confused pattern of replacement during the heaviest molting period of overwintering hares, compared to a relatively uniform pattern among juvenile hares. Overwintering hares experienced a spring and a fall molt. The fall molt was already initiated prior to completion of the spring molt and had a relatively short duration. Juveniles born early in the year (before July), before their fall molt, had undergone a postnatal molt, but those born late (July to September) had not. The juvenile fall molt had already begun when the postnatal molt was at its later stages. These facts suggest that the time budget for fall molt is tight and seasonally constrained. The timing and duration of molts in the overwintering and early-born juvenile hares were independent of individual age. Among overwintering hares, both sexes started spring molt synchronously, but the females were behind the males in late period of this molt and consequently further delayed throughout subsequent fall molt. This may be related to a higher cost of reproduction in females. No sexual difference was found in the molting progress of juvenile hares.

5

Leptospirosis - current risk factors connected with human activity and the environment

84%

Wasinski B., Dutkiewicz J.

Annals of Agricultural and Environmental Medicine

|

2013

|

tom 20

|

nr 2

Leptospirosis is a widespread although recently neglected zoonosis recognized worldwide. The disease seems to be underestimated, especially in countries located in the temperate climatic zone. The presented article concerns the main characteristics of leptospirosis and describes formerly known and recently observed environmental, occupational and recreational risk factors significant in the spreading and pathogenesis of the disease. The aspects of epidemiology significant in the temperate climatic zone are emphasized. The majority of cited articles present cases of the disease reported from Europe or North America. Climatic changes (warming) and extreme weather events such as floods are potential risk factors of leptospirosis. Also, some socio-economic phenomena, such as the intensive migration of people resulting in the transfer of the infections acquired in tropical countries, or worsening of economic status in the cities, increase the probability of disease. Apart from the danger connected with rodents, which are the main vectors of leptospires, occurrence of the disease in dogs and cats can generate a higher risk of infection for humans. Infections may also be acquired during various types of agricultural work and during recreational activities, such as swimming. The results of recent investigations show that ticks are also potential vectors of leptospires. The more frequent emergence of leptospirosis in countries located in the temperate climatic zone emphasize the need to verify knowledge related to the risk of its appearance, and to consider this disease during diagnostic processes.

6

The influence of climate conditions on breeding phenology of the Grey Heron Ardea cinerea L. in Northern Poland

84%

Jakubas D.

Polish Journal of Ecology

|

2011

|

tom 59

|

nr 1

The breeding phenology of the Grey Heron Ardea cinerea L. was investigated in three colonies situated on the Baltic Sea coast in Poland in 1999–2002. The heronries differ in localization (inland vs coastal) and local climate conditions. In inland location, air temperatures in spring were lower by 1.1–1.5°C and ice cover was present on foraging grounds longer by 19–29 days comparing to coastal ones. Herons occupied all colonies in similar dates (multi-year median date for all colonies: 5 March). However, birds from one coastal heronry tended to start breeding 9–10 days earlier (multi-year median date: 28 February) than birds from other colonies, what might be possible due to early presence of herons in the vicinity. Accessibility of foraging grounds (lack of ice cover) in spring was an important factor affecting the onset of breeding as dates of colony occupation, egg laying and hatching were positively correlated with the dates of last ice cover occurrence on the foraging grounds (r> 0.75, P <0.05). Intercolony differences in hatching dynamics might result from various frequencies of replacement clutches, and nests of late breeding subadults. In one season (2002), the number of medium-aged chicks per nest and fledging success were negatively correlated with the hatching date. Since chick mortality rate during last three weeks before fledging was not correlated with hatching date (suggesting similar food conditions in the course of the season), worse breeding parameters late in the season could be reflected in the lower clutch size or/and hatching success/chick survival rate during the first three weeks in nests of late breeders (i.e. subadults and replacement breeders).

7

Climate warming and the growth of warm water fish in ponds in the temperate zone

84%

Szumiec M. A.

Archives of Polish Fisheries

|

2005

|

tom 13

|

nr 1

In the temperate zone, climate warming improves the environmental conditions of warm water fish in many ways thus stimulating their growth and yield. Warming was observed in fishponds in the mid 1980s when seasonal sums of water temperature above 14°C, i.e. the temperature effective for carp, Cyprinus carpio growth, frequently exceeded the long-term average sum. There was considerable variability in the annual sums of temperature effective for carp growth with a decreasing tendency in the 1958-1980 period and an increasing tendency in the 1980-2003 period. The long-term distribution of the yield of three-year-old carp follows the sums of the effective temperature except in very warm seasons when the empirical yields were below those computed from the model. This implies that it is necessary to introduce into computations the upper temperature of the thermal limit effective for carp growth, which seems to be an average diel temperature of about 25°C. This paper presents the quantitative differentiation in thermal conditions of carp growth between Poland, France, and Bohemia.

8

The role of planktonic organisms in urea metabolism in lakes of temperate zone – case study

84%

Siuda W., Chrost R. J., Kalinowska K., Ejsmont-Karabin J., Kiersztyn B.

Polish Journal of Ecology

|

2016

|

tom 64

|

nr 4

Although urea is the simplest N-containing organic compound ubiquitous in all aquatic environments, its role in N-nutrition of planktonic biota and relevance for eutrophication of freshwater ecosystems is still insufficiently defined and often bypassed. The dynamics of production of autochthonous urea as well as maximal potential net ureolytic activity (net URA Vmax) of phyto- and bacterioplakton were studied in mesocosm experiment and verified during the field studies conducted in the Great Mazurian Lake system (GMLS). Analysis of the obtained results revealed that the proteins were the main autochthonous urea precursors. Urea concentration in the studied mesocosms and in GMLS surface waters was positively correlated with flagellate, ciliate and crustacean biomass and, less evidently, with bacterial biomass (BB). In surface waters of GMLS net URA Vmax, similarly as urea concentrations, increased with their trophic status. Analysis of correlation of potential ureolytic activity with chlorophyllₐ, (Chlₐ) BB and L-leucine aminopeptidase activity (AMP) in lakes of different trophic status suggests that although both groups of planktonic microorganisms participated in urea decomposition processes, in eutrophic ones bacterial decomposition of urea is more evident. In highly eutrophic lakes excess of phosphorus induced higher nitrogen requirement resulting in the increase in protein decomposition rate. Intensified protein degradation resulted faster urea production, which finally induced higher ureolytic activity of planktonic microorganisms. In profundal waters of GMLS potential ureolytic activity was distinctly lower than in surface waters. This was caused by low temperature of hypolymnetic waters, inhibitory effect of hydrogen sulphide and lack of phytoplankton, which is known as a primary urea consumer.

9

Central European habitats inhabited by spiders with disjunctive distributions

84%

Ruzicka V.

Polish Journal of Ecology

|

2011

|

tom 59

|

nr 2

The purpose of the study is to find which habitats within Central Europe support the persistence of isolated populations of spider species of both boreal and Alpine origins. Twenty-five species exhibited disjunctive distributions with their main sub-area in the tundra or boreal forest, and isolated sub-areas in the temperate zone of Central Europe. Six species exhibited disjunctive distributions with their main sub-area in the Alps, and isolated sub-areas in the temperate zone in Central Europe. Only (approximately) one-third of the species of boreal origin have the same habitat, as in the boreal zone. Twothirds of the species inhabit different habitats, or have narrowed their ecological valency. Screes play an important role in the survival of these isolated populations of species of boreal origin in the temperate zone, together with mountain summits, mountain forests, and peat bogs. Extensive complexes of sandstone rocks also enables the survival of isolated populations of species of boreal origin.

10

Linking the historical research with the growth simulation model of hardwood floodplain forests

84%

Simon J., Machar I., Bucek A.

Polish Journal of Ecology

|

2014

|

tom 62

|

nr 2

Hardwood floodplain forests of lowland rivers in the temperate zone of Europe represent important refugia for biota in the cultural landscape. Most of these habitats that are in near natural state are included in the system of protected areas and ecological networks. This paper presents the results of an innovative method for the assessment of hardwood floodplain forest management strategy. This method is based on combining the analysis of historical development of the forest ecosystem with the growth simulation model of the forest. The method allows us to understand (explain) the current state of the hardwood floodplain forest ecosystem and to predict its future development taking into account the applied forest management strategy. Application of this method is promising especially in protected areas because it allows us to assess the suitability of the chosen strategy that is included in the protected area management plan. The research was conducted in the area of ‘Bahna’ in Litovelské Pomoraví protected landscape area (Czech Republic). The current management strategy applied on the hardwood floodplain forest ecosystem in the study site is based on a strict non-intervention protection regime. Historical research of the forest ecosystem showed that the studied floodplain forest habitat is a relic of coppice with standards system and thus is the result of intensive forest management in the past. Growth simulation model showed that in the future 40 years the assessed management strategy will not lead to significant changes in the structure or diversity of the tree layer. Considering the conservation objectives of the reserve (maintenance of biodiversity and the present character of the forest ecosystem dominated by ash and oak), the current management plan does not require any significant corrections. The presented results can be applied in discussions about optimal management strategies in protected areas containing hardwood floodplain forest ecosystems, which belong to priority natural habitat types in the Natura 2000 network.

11

Variability of fluvial transport of the upper Wieprz river

84%

Stepniewska S., Stepniewski K.

Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

|

2008

|

tom 39

This paper shows variability of fluvial transport of the Wieprz river. The catchment of the upper Wieprz river to profile at Guciów located in Central Roztocze Region. In Wieprz during the hydrological years 1996–2006 average annual flow is 1.32 m3⋅s–1, which correspond to the outflow – 41.5 Mm3⋅a–1. Extreme values of the flows varied from 0.5 m3⋅s–1 to 13,1 m3⋅s–1. Outflow the Wieprz river has feature for the snow-rainy hydrological regime. During the study the annual average suspended load amounted 737 Mg. The annual average dissolved load amounted 10 343 Mg. The bed load estimated of the dissolved load and 1% of the suspended load. The monthly average suspended load and dissolved load were least in the November and were highest in the April. During the period of researches, the average mechanical denudation rates 2.4 Mg⋅km–2⋅a–1. Chemical denudation rates were much higher –36.1 Mg⋅km–2⋅a–1. Their differentiation are similar in other regions of Poland.

12

Bee pollination of fruit trees: recent advances and research perspectives II.

84%

Benedek P.

Journal of Apicultural Science

|

2003

|

tom 47

|

nr 1

13

Bee pollination of fruit trees: recent advances and research perspectives I.

84%

Benedek P.

Journal of Apicultural Science

|

2003

|

tom 47

|

nr 1

14

Slow soil movement as a global phenomenon

84%

Jahn A.

Geographia Polonica

|

1992

|

tom 60

15

Climatic and human impact on episodic alluviation in small mountain valleys, the Sudetes

84%

Klimek K., Malik I., Owczarek P., Zygmunt E.

Geographia Polonica

|

2003

|

tom 76

|

nr 2

16

Critical times of the year for Myotis myotis, a temperate zone bat: roles of climate and food resources

67%

Zahn A., Rodrigues L., Rainho A., Palmeirim J. M.

Acta Chiropterologica

|

2007

|

tom 09

|

nr 1

In highly seasonal temperate zones climate may cause fluctuations in the accessibility of prey for insectivorous bats. The main objective of this project was to evaluate if these fluctuations can result in resource bottlenecks that affect the body condition of a temperate zone bat — Myotis myotis. Seasonal changes in body condition followed different patterns in Portugal and Germany, which have different climates. In Germany bats use thermally better hibernacula, which allow them to minimize energy expenditure, but because of the longer winters they emerge from hibernation in poorer condition. Except during the hibernation period, food was always abundant in Germany, but the condition of the animals was poor when bad weather constrained foraging, particularly in early spring. In Portugal food was limiting during the long dry summer, and this affected the condition of the animals for several months. The conclusion that food resources can act as a limiting factor is relevant for conservation because, like other bat species, M. myotis forages mostly in agricultural and forestry habitats, and can be affected by practices that accentuate resource bottlenecks. Where necessary, the management of agroecosystems near colonies of M. myotis and of other threatened bats should aim at minimizing seasonal food bottlenecks.

17

Significance of the breeding season for autumnal nest-site selection by Tree Sparrows Passer montanus

67%

Pinowski J., Pinowska B., Barkowska M., Jerzak L., Zduniak P., Tryjanowski P.

Acta Ornithologica

|

2006

|

tom 41

|

nr 1

18

Exposure and respiratory health in farming in temperate zones - a review of the literature

67%

Omland O.

Annals of Agricultural and Environmental Medicine

|

2002

|

tom 09

|

nr 2

19

Phytoplankton of humo-eutrophic Lake Plotycze [Sobiborski Landscape Park, Eastern Poland]

67%

Peczula W., Zykubek A.

Oceanological Studies

|

1998

|

tom 27

|

nr 2

20

Practical applications of the multi-component marine photosynthesis model (MCM)

67%

Ficek D., Majchrowski R., Ostrowska M., Kaczmarek S., Wozniak B., Dera J.

Oceanologia

|

2003

|

tom 45

|

nr 3

This paper describes the applications and accuracy analyses of our multi-component model of marine photosynthesis, given in detail in Woźniak et al. (2003). We now describe an application of the model to determine quantities characterising the photosynthesis of marine algae, especially the quantum yield of photosynthesis and photosynthetic primary production. These calculations have permitted the analysis of the variability of these photosynthesis characteristics in a diversity of seas, at different seasons, and at different depths. Because of its structure, the model can be used as the ‘marine part’ of a ‘satellite’ algorithm for monitoring primary production in the sea (the set of input data necessary for the calculations can be determined with remote sensing methods). With this in mind, in the present work, we have tested and verified the model using empirical data. The verification yielded satisfactory results: for example, the statistical errors in estimates of primary production in the water column for Case 1 Waters do not exceed 45%. Hence, this model is far more accurate than earlier, less complex models hitherto applied in satellite algorithms.

Ograniczanie wyników

The occurrence of the Dermacentor reticulatus tick - its expansion to new areas and possible causes

Female song in birds: moving from a temperate zone bias towards a unisexual theory of song

Soil sand [soilarenite] and related cohesive detrital deposits: examples from a wet temperate climatic zone

The annual cycle of molt in the Cape hare Lepus capensis in Northern China: pattern, timing and duration

Leptospirosis - current risk factors connected with human activity and the environment

The influence of climate conditions on breeding phenology of the Grey Heron Ardea cinerea L. in Northern Poland

Climate warming and the growth of warm water fish in ponds in the temperate zone

The role of planktonic organisms in urea metabolism in lakes of temperate zone – case study

Central European habitats inhabited by spiders with disjunctive distributions

Linking the historical research with the growth simulation model of hardwood floodplain forests

Variability of fluvial transport of the upper Wieprz river

Bee pollination of fruit trees: recent advances and research perspectives II.

Bee pollination of fruit trees: recent advances and research perspectives I.

Slow soil movement as a global phenomenon

Climatic and human impact on episodic alluviation in small mountain valleys, the Sudetes

Critical times of the year for Myotis myotis, a temperate zone bat: roles of climate and food resources

Significance of the breeding season for autumnal nest-site selection by Tree Sparrows Passer montanus

Exposure and respiratory health in farming in temperate zones - a review of the literature

Phytoplankton of humo-eutrophic Lake Plotycze [Sobiborski Landscape Park, Eastern Poland]

Practical applications of the multi-component marine photosynthesis model (MCM)