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  • Author: Radoslaw Kaczmarek x
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Radosław Włodarczyk, Krzysztof Kaczmarek and Rafał Bargiel

Fifteen years of the Common Snipe (Gallinago gallinago) study at the Jeziorsko reservoir with some notes about weight and moult

The Students's Section from University of Łódź organises ringing camp at the dam reservoir every year. The aim of the camp is wader and duck ringing. One of the most numerous species of bird ringed is the Common Snipe. During 15 years (1989-2003) of studies 4142 individuals of this species were ringed. Age ratio differed among years, but every year young birds represented more that 80% of all ringed individuals. Snipes caught in September caused problems with age identification and that impeded to obtain correct age ratio each year. Analysis of weight of caught birds revealed between-years variation in juvenile birds, adults were excluded from analysis due to small sample size. Throughout the autumn months the increase in mean body mass in young birds was observed. Data about moult suggest that adult birds show two main strategies of primary moult: traditional moult and suspended moult. Both of them are of the same frequency. Tail feathers are moulted by juveniles as well as by adults simultaneously.

Open access

Radosław Włodarczyk, Tomasz Janiszewski, Krzysztof Kaczmarek, Piotr Minias and Anna Kleszcz

Sexing Common Snipe (Gallinago gallinago) in the Field - is there any Simple Method?

There are a few methods used for sex determination in the Common Snipe. However, all proposed methods are based on data obtained from dead birds. The most important feature is the total length of the outermost tail feather. The performed analysis showed that the vane length was strongly correlated with the total length of this feather. It allowed to predict this measurement having only the vane length. Because the measurement procedure influences the vane length, new ranges of vane length typical for each sex are proposed. However, the analysis of the vane length distribution suggested that there were no two homogenous groups that would represent the two sexes. This supports the prediction that the total feather length should be used rather cautiously as a simple sex trait in the Common Snipe. Also the second trait based on the tail feather colour resulted in overestimation of the proportion of females.

Open access

Piotr Minias, Krzysztof Kaczmarek, Radosław Włodarczyk and Tomasz Janiszewski

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.

Open access

Laura Savini, Radoslaw Kaczmarek, Declan Noone, Paul Giangrande, Geoffrey Dusheiko and Brian O’Mahony

Abstract

In the 1980s and 1990s, thousands of people with bleeding disorders (PWBD) across the world were infected with HIV and hepatitis C virus (HCV) through contaminated treatment products. The extent of the infection, as well as the needs of those still living with HCV, were never properly assessed. The purpose of our survey was to identify how many PWBD were infected with HCV in Europe, as well as their health status and needs. HCV infection was defined as any person with a bleeding disorder who was exposed to the virus and seroconverted to become anti-HCV antibody positive. The survey also looked at testing and treatment availability. Between December 2016 and March 2017, the survey was distributed to 45 national patient organisations in the European Haemophilia Consortium (EHC), who were encouraged to respond with the support of a local hepatologist. The data gathered led us to estimate that some 15,000 people with bleeding disorders were infected with HCV in the 30 countries that responded. Although some countries have detailed records of patients with HCV, most - including some with national haemophilia registries - were unable to provide exact numbers of initial infections, HIV coinfection, survival and SVR rates. Responding countries reported varying degrees of monitoring for disease progression, as well as extremely divergent access to new direct-acting antivirals, with only eight countries prioritising PWBD for treatment. With liver disease and hepatocellular carcinoma being among the main causes of death in an aging bleeding disorders population, this survey identifies a clear gap in care. It is a frustrating paradox that today, in many European countries PWBD, such as haemophilia, may live long and productive lives due to much-improved access to factor replacement therapy, yet die prematurely of a curable disease such as hepatitis C. It has been demonstrated that HCV eradication in PWBD can be achieved through national commitment, especially when the patient population is limited and HCV eradication could be achieved in the short-term. The eradication of HCV in PWBD in Europe is an idea whose time has come.

Open access

Mateusz Ściborski, Włodzimierz Meissner, Robert Krupa, Radosław Włodarczyk, Krzysztof Kaczmarek, Rafał Bargiel, Adam Wojciechowski, Aleksandra Raniczkowska, Radosław Kozik and Juliusz Pietrasik

Fieldwork results of wader research stations working in Poland in 2002-2003

Open access

Łukasz Kaczmarek, Radosław Mieszkowski, Marek Woźniak and Tomasz Dybciak

Abstract

The paper presents the analysis of the II Underground Line construction’s impact on the Warsaw Scarp with the use of the electrical resistivity imaging (ERI, also known as the electrical resistivity tomography) and further total station position measurements.The underground passes under the scarp perpendicular in the area of Dynasy Street 6, in Down-town district.The electrical resistivity imaging was performed for recognition of the geological structure and a potential land slide surface or zone.The gradient system was used during the prospection. In these analyses, the longitudinal section was 40 m long, and the depth of survey amounted to 6 m. In the case of the 200 m long transverse section, the resulted depth of survey was 30 m.The geophysical image of the longitudinal section,does not contain loosening soil zones,which could indicates lip surface.Next, total station measurements, which were tied to the archival geodetic observations’ results, were carried out. The aim of the measurements was to verify the activity of the horizontal and vertical displacements. The TBM excavation process led to summary vertical displacements up to approx. 24 mm and horizontal displacements amounting to approx. 13 mm. To sum up, the current land surveys reveals minor under ground line’ s construction impact on the scarp displacement. Nevertheless, the sensitive urban environment requires further monitoring, especially that the operation loads can result in displacement rate change.

Open access

Łukasz Kaczmarek, Radosław Mieszkowski, Marcin Kołpaczyński and Grzegorz Pacanowski

Abstract

The article shows the results of geophysical surveys performed by using Electrical Resistivity Tomography (ERT) method on selected region of Płock slope of a Tumski hill near Basilica of Assumption of the Blessed Virgin Mary in Płock and in Maszewo by the Vistula River a few kilometers north of Płock. The above-mentioned sections were selected due to landslide phenomena observed there. Geophysical surveys were conducted in order to verify the state of the distribution of electrical resistivity in the sectors where mass movement was identified. The electrofusion cross-section near Cathedral Basilica shows clays and sands. Also in ERT prospection a zone of loose soils with high resistance is clearly visible. The results of the ERT method from Maszewo, indicates historical land surface of a landslide and that the slope in Maszewo consists of cohesive deposits. In order to describe these particular issues, geological cross-sections and safety factor obtained by calculation are presented for the analyzed parts of the slope. The safety factor shows that probability of landslide activity near Cathedral Basilica is very unlikely and in Maszewo is very high

Open access

Włodzimierz Meissner, Małgorzata Krupa, Magdalena Remisiewicz, Robert Krupa, Piotr Minias, Krzysztof Kaczmarek, Tomasz Janiszewski, Radosław Włodarczyk, Radosław Kozik, Piotr Rydzkowski, Lucjan Kleinschmidt and Adam Wojciechowski

Results of Fieldwork of Wader Research Stations Working in Poland in 2004-2005

Open access

Szymon Bzoma, Włodzimierz Meissner, Tomasz Janiszewski, Magdalena Wybraniec, Magdalena Remisiewicz, Robert Krupa, Radosław Kozik, Krzysztof Kaczmarek, Anna Kleszcz, Piotr Minias, Radosław Włodarczyk, Krzysztof Lukoszek and Adam Wojciechowski

Fieldwork Results of Wader Research Stations Working in Poland in 2006-2008