Łukasz Jankowiak

Łukasz Jankowiak
University of Szczecin · Institute of Biology

PhD

About

87
Publications
20,422
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
469
Citations

Publications

Publications (87)
Article
Full-text available
Northern hemisphere species generally respond to global warming by withdrawing from the southern margins of their distributions and shifting their breeding sites northwards. However, the situation regarding the breeding populations of Goosanders Mergus merganser merganser in Europe appears to be paradoxical: in many places, an increase in the breed...
Article
Full-text available
Capsule White Storks Ciconia ciconia forming migrating flocks in southern Poland in autumn came from central Poland and eastern Germany, and used ploughed fields and cut meadows to forage before they moved south. Aims The aim of this study was to collect information on the flocking behaviour of the White Stork in southern Poland, with a special fo...
Article
Full-text available
Incubation behaviour is essential for understanding the reproductive success in birds. For example, the orientation of the bird is important for reducing incubation costs associated with wind or sun, but on the other hand can be modified by the perceived risk of predation. We studied the body position of incubating White Stork Ciconia ciconia in ea...
Article
1. Burrows are specific structures created by animals, characterised by specific conditions different from those in the surrounding environment. Therefore, burrows may play a role for many other animals than their owners. To test this view, we have chosen the burrows of red foxes Vulpes vulpes and badgers Meles meles, two main burrow dwellers from...
Article
Full-text available
Background. Many studies of birds have indicated that offspring sex ratios can vary with environmental and parental traits. On the basis of long-term research, we first evaluated the possible influence of parental age difference and brood characteristics on offspring sex and fitness in multi-brooded Blackbirds Turdus merula. Methodology. The study...
Article
Full-text available
Introduction: Despite the growing number of studies describing digit ratio patterns in tetrapods, knowledge concerning certain basic issues is still scarce. In lower vertebrates such as tailless amphibians (Anura), the numbering of individual fingers on the forelimbs and their homology with the fingers of other vertebrates pose an unsolved problem....
Article
Full-text available
How high do birds fly above roads, and how do they use the road infrastructure (bridges, lampposts etc.)? These questions are rarely explored in ecological studies but were addressed by us during research in 2016–2018 in southern Poland. In total, 1665 individual birds belonging to 24 species were recorded. Species differed significantly in the hei...
Article
Full-text available
Increases in the wild boar Sus scrofa population create many conflicts that must be managed, especially because hunting represents a major cause of mortality in this game species. However, hunting effort is not distributed randomly and is influenced by many factors, including hunting methods. This can be especially important in understanding the na...
Article
Top‐predators, including birds of prey, play an important role in ecosystems and are good bioindicators (Sergio et al. 2005). Links between the presence of predators and the overall biodiversity of a particular habitat mainly focus on trophic relationships (Roth and Weber 2008, Sergio et al. 2008b, Burgas et al. 2014). However, top‐predators not on...
Article
Full-text available
Coronaviruses may exert severely negative effects on the mortality and morbidity of birds and mammals including humans and domestic animals. Most recently CoVID-19 has killed about half million people (27th of June, 2020). Susceptibility to this disease appears to differ markedly across different societies but the factors underlying this variabilit...
Preprint
Full-text available
Coronaviruses may exert severely negative effects on the mortality and morbidity of birds and mammals including humans and domestic animals. Most recently CoVID-19 has infected over 2,360,000 humans and killed more than 165,000. Susceptibility to this disease appears to differ markedly across different societies but the factors underlying this vari...
Article
The electromagnetic field (EMF) is known to influence functions of the nervous, cardiovascular and reproductive systems of many animals, including ticks. The aim of this study was to test the behavior of ticks in the presence of radio-frequency EMF. For testing, 160 adult male and 140 adult female unfed Ixodes ricinus ticks were used. Individuals w...
Article
For Greater Scaup Aythya marila , classified as ‘Vulnerable’ on the European Red List of Birds, the south-western Baltic Sea is one of the most important wintering sites in Europe. In this area, a large concentration of gillnet fishery temporally overlaps periods of the most abundant occurrence of foraging diving birds. The aim of the article is to...
Article
Full-text available
Calcium is one of the most important elements determining reproductive success in birds, and snail shells are a well-known source of calcium for egg-laying females. In Europe, song thrushes, Turdus philomelos, break snails open at locations called anvils, eat the soft parts and leave the broken shells. Based on observational studies in 2011–2017 in...
Article
Full-text available
Providing bird feeders is a very popular interaction between people and birds, and many aspects have been studied in detail. The utilisation of bird feeders in relation to the daylight pattern still needs more research, mostly due to technical problems. This is important for understanding optimal foraging and, in consequence, bird survival. The stu...
Article
Full-text available
Calcium is one of the most important elements determining reproductive success in birds, and snail shells are a well-known source of calcium for egg-laying females. In Europe, song thrushes, Turdus philomelos, break snails open at locations called anvils, eat the soft parts and leave the broken shells. Based on observational studies in 2011-2017 in...
Article
Even though much has been published in recent years on the factors affecting the lifespan and lifetime reproductive success of birds, there are still gaps in our knowledge. Here, we present the results of a long-term study of European blackbirds which examined the effect of natal conditions on lifespan and lifetime reproductive success (expressed b...
Article
Full-text available
Among Arctic-breeding waterfowl species, spring stopovers are critical to individuals as a means to accumulate fat and nutrient stores to invest in both migration and their breeding attempt in the tundra zone. We studied the influence of possible factors (age, sex, progress of migration season) on the stopover duration of one such species, the Eura...
Article
Full-text available
Although several factors have been highlighted to explain the influence of urbanization on bird fitness and survival, the role of persistent toxicants such as lead (Pb), which is typically present in urban areas worldwide, has seldom been studied despite the ecological importance of such a widespread stressor. Studying free-living European blackbir...
Article
Full-text available
Farmland landscapes are recognized as important ecosystems, not only for their rich biodiversity but equally so for the human beings who live and work in these places. However, biodiversity varies among sites (spatial change) and among seasons (temporal change). In this work, we tested the hypothesis that bird diversity hotspots distribution for br...
Article
Full-text available
The aerial and ground methods of counting birds in a coastal area during different ice conditions were compared. Ice coverage of water was an important factor affecting the results of the two methods. When the water was ice-free, more birds were counted from the ground, whereas during ice conditions, higher numbers were obtained from the air. The f...
Data
Group of waterbird species used to test the accuracy of air and ground counts (1); mean ± standard errors of ground counts (2); 95% confidence intervals of ground counts (3); mean ± standard errors of air counts (4); 95% confidence intervals of air counts (5); method error—difference between mean numbers of birds recorded during ground and air coun...
Data
Results of general linear mixed models showing (GLMM) the influence of different count methods (Ground vs Aircraft) performed in different ice cover presence (1—ice cover present, 0—no ice cover) in relation to different groups of species (Group 1: Cygnus olor, C. Cygnus, Aythya marila, A. fuligula, Mergellus albellus, Mergus merganser, Bucephala c...
Data
Script to R for simple bootstrap to estimate means, se and confidence intervals and permutation test based on resampling without replacement
Article
This paper describes the first case of successful polyterritorial polygyny in the European Blackbird Turdus merula. It was detected in an intensively studied color-banded population of European Blackbirds in Szczecin (northwestern Poland).
Article
Capsule: A 19-year study of European Blackbirds Turdus merula confirms that senescence is associated with a decrease in condition measured by wing length but bills become progressively longer with age. Aims: To explore the correlations between biometrics of Blackbirds and age, to identify possible links with senescence. Methods: During the 19 years...
Article
Full-text available
Factors associated with the increased usage of electronic devices, wireless technologies and mobile phones nowadays are present in increasing amounts in our environment. All living organisms are constantly affected by electromagnetic radiation which causes serious environmental pollution. The distribution and density of ticks in natural habitats is...
Preprint
Full-text available
The paper compares the aerial and ground methods of counting birds in a coastal area during different ice conditions. Ice coverage of waters was the most important factor affecting the results of the two methods. When the water was ice-free, more birds were counted from the ground, whereas during ice conditions, higher numbers were obtained from th...
Preprint
Full-text available
The paper compares the aerial and ground methods of counting birds in a coastal area during different ice conditions. Ice coverage of waters was the most important factor affecting the results of the two methods. When the water was ice-free, more birds were counted from the ground, whereas during ice conditions, higher numbers were obtained from th...
Article
Full-text available
Objectives : The aim of the study was to determine the prevalence of smoking among children and adolescents aged 7-18 years, and also to determine the relationship between this addiction and the Body Mass Index (BMI).Methods: Basic anthropometric measurements were performed, and information concerning cigarette smoking and basic SES was gathered us...
Article
Many studies of socially monogamous birds discuss the adaptive role of between‐season partner change, but only a handful of them refer to the benefits of pair fidelity in terms of increased survival. Moreover, there are no studies describing the benefits of within‐season mate retention. Our data relating to an urban population of European Blackbird...
Article
Full-text available
Same-sex sexual behaviour has been noted among social animals. However, because of the large number of observations necessary, data from controlled experiments are lacking. In this study, we performed experiments to evaluate the effects of male and female removal in colonies of the feral pigeon (Columba livia f. urbana). After the experimental remo...
Article
Full-text available
Streszczenie: Obszary rolnicze stanowią 60% powierzchni Polski i zaliczają się do terenów o najwyższym poziomie bioróżnorodności w Europie. Jednak wraz z intensyfikacją produkcji rolnej ich obecny stan jest bardzo zagrożony. Celem pracy jest wskazanie kluczowych problemów badawczych, które mogą pomóc w ochronie środowiska przyrodniczego polskich ob...
Article
Full-text available
Fleas infecting northern white-breasted hedgehogs, Erinaceus roumanicus (Barrett-Hamilton), collected from 2009-2011 in Budapest (Hungary) were studied. A total of 305 white-breasted hedgehogs were captured and 1,251 fleas were collected. The flea community comprised two species, the hedgehog flea Archaeopsylla erinacei (Bouche, 1835) and the dog f...
Article
Full-text available
Some species of birds react to climate change by reducing the distance they travel during migration. The Odra River Estuary in the Baltic Sea is important for wintering waterfowl and is where we investigated how waterbirds respond to freezing surface waters. The most abundant birds here comprise two ecological groups: bottom-feeders and piscivores....
Data
Raw data A, date of count; B, season of count; C, species; D, month of count; E, number of days with 100% ice cover 15 days prior to count; F, mean daily temp. 15 days prior to count; G, mean max. temp. 15 days prior to count; H, mean min.temp.15 days prior to count; I, feeding group: B-bottom-feeders, P-piscivorous; J, count method: A - aerial, L...
Data
Results of general linear mixed models showing the influence of ice cover, maximum ice extent [km2] in the Baltic Sea (max ice) and season on the percentages of the population of the target species in the Odra River Estuary The parameters show the interaction between season and species, ice cover and species, max ice and species. The interaction pa...
Data
Trend of flyway population (2) and impact of covariates (3-5) on the dependent variable –the ratio of the percentage of the numbers of a given species in the study area to the estimated total flyway population in a given year (1) Target species, (2) trend of flyway population after Nagy, Flink & Langendoen, 2014; (3) direction of population index c...
Data
Ranking of general linear mixed models showing the influence of ice cover, maximum ice extent [kmtsup2] in the Baltic Sea (max ice) and season on the percentages of the population of the target species in the Odra River Estuary The models were ranked using the Akaike information criterion (AIC). Δ AIC represents the difference between each model an...
Article
The mechanism of senescence is an important subject of current research, but our knowledge of the factors influencing the rate of ageing in naturally occurring populations remains rudimentary. Evolutionary theories of senescence predict that investment in reproduction in early life should come at the cost of reduced somatic maintenance and thus res...
Article
Full-text available
Despite the fact that the structure of a forest, its vegetation composition and the species diversity in its tree stands are among the key factors shaping avian communities in forests in general, there are few studies on this topic relating to the deciduous forests of Central and East-Central Europe. The aim of the present study was therefore to in...
Preprint
Full-text available
Many species of birds react to climate change, for example, by wintering in areas closer to their breeding areas. We investigated the responses of two different functional groups of waterbirds to factors associated with climate change. The Odra River Estuary (SW Baltic Sea) is of key importance to wintering waterfowl. The most numerous birds here b...
Preprint
Full-text available
Many species of birds react to climate change, for example, by wintering in areas closer to their breeding areas. We investigated the responses of two different functional groups of waterbirds to factors associated with climate change. The Odra River Estuary (SW Baltic Sea) is of key importance to wintering waterfowl. The most numerous birds here b...
Article
Full-text available
The electromagnetic field (EMF) is present in the environment throughout the world and encompasses both natural and human-made sources of electromagnetic fields. It has been shown that EMF influences a variety of biological systems, including the behavioural responses of both vertebrates and invertebrates. As such, determining the effects of the EM...
Article
Full-text available
The common blackbird is a model species in toxicological studies in different environments and its egg shells are very often used as a material to determine the content of different elements, including fluorine, which might be environment pollutants. Considering the above, we decided to determine the factors affecting the fluoride ion (F-) content...
Preprint
Full-text available
Many species of birds react to climate change, for example, by wintering in areas closer to their breeding areas. We investigated the responses of two different functional groups of waterbirds to factors associated with climate change. The Odra River Estuary (SW Baltic Sea) is of key importance to wintering waterfowl. The most numerous birds here b...
Article
Adoption behavior is well-known in birds, but the majority of adoption studies concern the nestling phase of birds' lives, whereas fledgling adoption is a much less well-known phenomenon, especially in passerines. During 17 years of observations, we collected data on the fate of 238 broods of European Blackbirds Turdus merula. In 171 cases fledglin...
Article
Full-text available
To study the seasonal changes in avian communities, we collected data in an extensively used farmland in Western Poland during 2006-2013. Generalized additive mixed models were used in order to study the effects of seasonality and protected areas on the overall bird species richness. A similarity percentage analysis was also conducted in order to i...
Preprint
Full-text available
Climate change can shift the winter range of many species and birds can act as indicators of this process. Estuaries of large rivers are places where different waterbirds winter with each species reflecting their own behavior and sensitivity to weather changes. Knowing these behaviors and tracking long-term changes in the number of birds, we can co...
Article
Studies dealing with the individual survival of birds in open populations usually estimate survival according to capture-recapture models like the Cormack-Jolly-Seber (CJS). In fact, these models estimate local apparent survival (ϕ), which is a combination of the probabilities of true survival (S) and site-fidelity (F), i.e. death and emigration ar...
Article
Full-text available
Every species has certain habitat requirements, which may be altered by interactions with other co-occurring species. These interactions are mostly ignored in predictive models trying to identify key habitat variables correlated with species population abundance/occurrence. We investigated how the structure of the urban landscape, food resources, p...
Article
Dredging of the river to remove macrophytic vegetation and bottom sediment is a common anthropogenic disturbance in the river ecosystem that directly and indirectly influences benthic invertebrates, including molluscs. We assessed the effect of dredging on malacofauna during the year following such an intervention on the river Krapiel (NW Poland) a...
Article
Full-text available
Human food waste is considered to be richer in carbohydrates, lipids and proteins than most natural food supplies; however, it is very well digested in scats. So, as an indication of this kind of food in the diet, we have used each indigestible, anthropogenic origin element found in faeces (e.g., glass, plastic, rubber, etc.). There are few studies...
Article
Full-text available
Weather is a crucial factor affecting the onset and end of breeding in birds. However, a few studies have clearly indicated that other factors—breeding parameters and/or individual traits—can also exert an influence. Our study aimed to determine how breeding experience and parental investment are related to the start and the end of the breeding sea...
Article
Full-text available
Niche construction can lead to coevolutionary episodes and greater specialization, and can have implications for the evolution of biological diversity, so understanding how individuals adjust their behavior to conspecifics and heterospecifics over changing social and environmental gradients presents an interesting research problem. The objective of...
Article
Full-text available
The winter raptor community was studied in river valleys of North Eastern Poland during the winters of 2000–2010. Via transect counts method we showed the potential drivers of raptor abundance, and co-occurrence patterns. We analysed the influence of weather and habitat factors along on the single species abundance and diversity of the raptor assem...
Article
Full-text available
Roosting site selection by geese is a key factor for survival during migration and wintering. Birds should select sites that minimize thermoregulation demands and predation risk, and maximize foraging efficiency. We used data on the spatial location of geese roosting sites in Poland to compare landscape features and the conservation status of roost...
Article
Full-text available
Capsule We examined intraspecific variation in the nest size of open cup nesting Blackbirds Turdus merula and found that of seven variables considered, nest size variation was determined by the length of the nest construction period, nest height and the experience of the building female.Aims We tested seven hypotheses to investigate the influence o...
Article
Full-text available
The differences in morphology and age between single and paired males of an urban population of the European Blackbirds (Turdus merula) were studied in Żeromski park in the city of Szczecin (NW Poland) spanning 11 breeding seasons since 1998. The proportion of single to paired males in different age groups was established. Also, morphology features...