• Home
  • Tomasz Zwijacz-Kozica
Tomasz Zwijacz-Kozica

Tomasz Zwijacz-Kozica
Tatra National Park · Research and Planning

PhD

About

138
Publications
49,913
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
1,834
Citations
Citations since 2016
102 Research Items
1664 Citations
20162017201820192020202120220100200300400
20162017201820192020202120220100200300400
20162017201820192020202120220100200300400
20162017201820192020202120220100200300400
Additional affiliations
January 2001 - present
Independent Researcher
Independent Researcher
Position
  • Problem bears in Tatra Mountains
Description
  • Monitoring of problem bears in Tatra Mountains

Publications

Publications (138)
Article
Full-text available
Introduction and objective: The Tatra chamois (Rupicapra rupicapra tatrica) is a significant representative of the High Tatra Mountains endemic fauna species. In terms of health hazards for these animals, an important role is played by parasitic infections that can lead to a significant depletion of the entire population. Objective: The aim of the...
Preprint
Full-text available
Quantifying animal movements is necessary for answering a wide array of research questions in ecology and conservation biology. Consequently, ecologists have made considerable efforts to identify the best way to estimate an animal’s home range, and many methods of estimating home ranges have arisen over the past half century. Most of these methods...
Article
Full-text available
Hemerobius schedli Hölzel 1970 is recorded for the first time from Poland (Tatra Mountains). A total of 13 specimens were collected, of which 10 were females and three were males. One specimen (female) from Poland and one specimen (male) from North Macedonia were intended for molecular identification for the COI marker. Molecular studies of three E...
Article
Full-text available
Aim: Macroecological studies that require habitat suitability data for many species often derive this information from expert opinion. However, expert-based information is inherently subjective and thus prone to errors. The increasing availability of GPS tracking data offers opportunities to evaluate and supplement expert-based information with de...
Article
Full-text available
Pancierniky (Oribatida) predstavujú jeden z najväčších radov roztočov na svete s kozmopolitným rozšírením. Podieľajú sa priamo alebo nepriamo na všetkých hlavných procesoch v pôde, stimulujú pôdnu mikroflóru, hrajú významnú úlohu v kolobehu živín. Sú to suchozemské článkonožce, u ktorých sa pôdna vlhkosť považuje za jeden z najdôležitejších faktoro...
Article
Full-text available
The chamois Rupicapra spp. is the most abundant mountain ungulate of Europe and the Near East, where it occurs as two species , the northern chamois R. rupicapra and the southern chamois R. pyrenaica. Here, we provide a state-of-the-art overview of research trends and the most challenging issues in chamois research and conservation, focusing on tax...
Article
Full-text available
Dormice monitoring was carried out between 2014 and 2019 at 14 areas located in various regions of the Tatra National Park in Poland. The areas were located in various habitats: beech forests and spruce forests in the low mountain zone; spruce forests, windbreaks and mountain pine (Pinus mugo) thickets in the high mountain zone. The choice of the a...
Conference Paper
Full-text available
Capercaillie are considered anthropophobic or misanthropic birds. The birds, both hens and cocks, frequently seek the company of humans, and sometimes become aggressive. They are called crazy capercaillie, or mad-looking birds that are not afraid of people. These birds coming from different distribution ranges are broadly described in literature. O...
Article
Full-text available
The soils found in forest research plots in the eastern part of Tatra National Park were very diverse. Soils belonging to seven orders according to the Polish soil classification were noted on the 236 studied plots. The most abundant were soils belonging to the order of brown earths (73 soil profiles) and the order of podzolic soils (69 profiles)....
Article
Full-text available
The increase in mean annual temperature and reduction in summer rainfall from climate change seem to increase the frequency of natural and human-made disturbances to forest vegetation. This type of rapid vegetation change also significantly affects bat diversity. The aim of our study was to document differences in the ecological parameters of bat a...
Article
Full-text available
Pinus mugo shrubs on peat bogs in the Tatra National Park (TNP) were for the first time described as a separated plant association by Obidowicz (1975) from only two mires. Since then, there have been no studies on peat bogs in the TNP and they have not been mentioned in the list of vegetation types of the Park. The research regarding the dwarf pine...
Article
Full-text available
Coniferous forests of the northern hemisphere are exposed to strong outbreaks of bark beetles. Using free multispectral Sentinel-2 satellite images from the European Space Agency (ESA) Copernicus program, the European spruce bark beetle outbreak in the Tatra National Park in 2015-2018 was traced. A single-image Support Vector Machine classification...
Article
Diet studies are essential to understand animal ecology and ecosystem dynamics, especially in the case of large omnivores. These studies are particularly relevant in areas where human disturbance is intense and, thus, species dietary patterns might change due to the easy accessibility of food resources of human origin, which may hinder the ecosyste...
Poster
Full-text available
Lead as an ubiquitous environmental pollutant of natural and anthropogenic origin enters a bear’s organism mostly via food and water. It is initially found in the bloodstream bound to red blood cells and reflects recent exposure. As a non-essential metal, lead causes adverse health effects on a developing nervous system (maternal transfer), renal,...
Article
Full-text available
The Tatra Mts. are an area with a long tradition of phytosociological studies, as the first study using Braun-Blanquet’s approach in Poland was conducted in this region in the 1920s. However, a comprehensive modern classification of the forest communities of the Tatra National Park (Polish part of the Tatra Mts.) is missing but urgently needed, for...
Article
Full-text available
Cambiophagous insects, fires and windthrow cause significant forest disturbances, generating ecological changes and economical losses. The bark beetle (Ips typographus L.), inhabiting coniferous forests and eliminating weakened trees, plays a key role in posing a threat to tree stands, which are dominated by Norway spruce (Picea abies) and covers a...
Article
Full-text available
The relative importance of environmental factors and species pool in natural regeneration processes is still intensively disputed. Is environmental filtering especially important for species with higher requirements for temperature and soil fertility? Is the seed source limitation especially pronounced among tree species with lower dispersal abilit...
Article
Full-text available
Dwarf mountain pine, Pinus mugo, is an important component of the subalpine and alpine zone in Europe. For several years, in one of the natural areas of the occurrence of this species in the Polish Tatras, an intensified decline of the assimilation apparatus has been observed. The studies conducted in 2016–2020 were aimed at determining the types o...
Article
Full-text available
The gray wolf Canis lupus range in central Europe is dynamically expanding, reconnecting previously isolated populations. Thus, a recent paper has proposed to merge the current Baltic and Central European (CE) wolf management units, which are no longer isolated by distance. However, recent genetic findings indicate that these two populations are no...
Article
Full-text available
Aim The recent recovery of large carnivores in Europe has been explained as resulting from a decrease in human persecution driven by widespread rural land abandonment, paralleled by forest cover increase and the consequent increase in availability of shelter and prey. We investigated whether land cover and human population density changes are relat...
Article
Full-text available
Soils covering forest research plots in the Tatra National Park in the Western Tatras are very diverse. Soils belonging to six different soil orders, according to the newest edition of Poland’s soil classification system, were noted in the 432 studied plots. The most abundant were soils belonging to the order of brown earths (169 profiles) and to t...
Article
Full-text available
Hybridization and introgression are important processes influencing the genetic diversity and evolution of species. These processes are of particular importance in protected areas, where they can lead to the formation of hybrids between native and foreign species and may ultimately result in the loss of parental species from their natural range. De...
Article
Full-text available
Kozica T., Patejuk K., 2020. The mycobiota of needles and shoots of silver fir (Abies alba Mill.) with symptoms of Herpotrichia needle browning in the Tatra Mts. (Poland) Ann. For. Res. 63(2): 45-56. Abstract The European silver fir (Abies alba Mill.) has the largest distribution area of all the European species of fir. It is the only species of th...
Article
Full-text available
Introduction. Echinococcus multilocularis has been endemic in red foxes in eastern and central parts of Europe, and E. granulosus s. l. identified in wolves in some countries. In recent years, wolves hale emerged as potentially important definitive hosts of E. multilocularis. Objective. This aim of the survey was to record indirectly using nested-P...
Article
Full-text available
The European silver fir (Abies alba Mill.) has the largest distribution area of all the European species of fir. It is the only species of this type found in the Carpathian Mts., including their highest range - the Tatras, where it constitutes one of the main components of lower montane forests. In certain sections of the Carpathian Mountains fir s...
Article
Full-text available
Background. Fir (Abies alba Mill.) is an important tree species in Polish forests, both from an economic and biocenotic point of view. In contrast to the Carpathians, where its share in stands is stable, in the Sudetes, as a result of massive deforestation in the past, its share in some regions fell below 0.5%. The “ecological disaster” that took p...
Article
Full-text available
The COVID-19 pandemic led to many European countries imposing lockdown measures and limiting people's movement during spring 2020. During the summer 2020, these strict lockdown measures were gradually lifted while in autumn 2020, local restrictions started to be reintroduced as a second wave emerged. After initial restrictions on visitors accessing...
Article
Full-text available
Bears are omnivores particularly well-adapted to variations in the nutritional composition, quality and availability of food resources. Artificial feeding practices have been shown to strongly influence diet composition and seasonality, as well as to cause alterations in wintering and movement in brown bears (Ursus arctos). In this study, we invest...
Article
Full-text available
Knowledge about breeding biology is often incomplete in species with complex reproductive strategies. The brown bear Ursus arctos is a polygamous seasonal breeder inhabiting a wide variety of habitats and environmental conditions. We compiled information about brown bear breeding season dates from 36 study areas across their distribution range in t...
Article
Full-text available
Accurately quantifying species’ area requirements is a prerequisite for effective area‐based conservation. This typically involves collecting tracking data on species of interest and then conducting home‐range analyses. Problematically, autocorrelation in tracking data can result in space needs being severely underestimated. Based on previous work,...
Article
Full-text available
Sex ratio (ratio between the number of male and female individuals in a population) is an important factor contributing to the survival rates of the population in wild. Imbalanced sex ratio is often the cause of diminished survival rates of endangered species. The analysis of DNA collected through noninvasive methodologies effectively allows to mon...
Article
We investigated the level of five non-essential metal(loid)s (As, Cd, Hg, Tl, Pb) and nine essential metals (Mg, Ca, Mn, Fe, Co, Cu, Zn, Se, Mo) in hair and blood components of captive and free-ranging European brown bear populations in Croatia and Poland. Metal(loid) associations with biomarkers of oxidative stress (superoxide dismutase, SOD; glut...
Article
Full-text available
Local extinction and recolonization events can shape genetic structure of subdivided animal populations. The gray wolf (Canis lupus) was extirpated from most of Europe, but recently recolonized big part of its historical range. An exceptionally dynamic expansion of wolf population is observed in the western part of the Great European Plain. Nonethe...
Article
Full-text available
The investigations were carried out in 2018 on a regular grid of 665 plots established in the forest areas of the Tatra National Park. 305 phytosociological reléves representing communities of the order Piceetalia excelsae, were selected, and divided into undisturbed, subjected to spontaneous disturbances and subjected to protective measures. NMDS...
Article
Full-text available
The strictly protected Swiss stone pine (Pinus cembra) is one of the most valuable elements of Polish dendroflora, naturally distributed only in the Tatra Mts. (S Poland/N Slovakia). In 2008−2009 intense P. cembra dieback was recorded in Slovak part of the mountains, especially in the localities adjacent to the Norway spruce stands affected by bark...
Chapter
This book on winter tourism consists of three parts. Part I is addressed to current challenges in winter tourism including regional planning, socio-cultural conditions, climate change and economic challenges. Part II gives an overview of behavioural research in winter tourism. The authors present case studies and methodological concepts for both un...
Article
Swedish whitebeam (Sorbus intermedia (Ehrh.) Pers.) is a species with a very limited range. It occurs only in southern Scandinavia and along the Baltic coast, without the Gulf of Finland. Its southernmost natural localities are situated in northern Poland. They are few in number, grouped in two regions: near Kołobrzeg and the Gulf of Gdańsk. Curren...
Article
Full-text available
Swedish whitebeam (Sorbus intermedia (Ehrh.) Pers.) is a species with a very limited range. It occurs only in southern Scandinavia and along the Baltic coast, without the Gulf of Finland. Its southernmost natural localities are situated in northern Poland. They are few in number, grouped in two regions: near Kołobrzeg and the Gulf of Gdańsk. Curren...
Article
Full-text available
We used 13 autosomal microsatellite loci to evaluate the genetic diversity in the wolf (Canis lupus) population inhabiting Tatra Mountains along Polish-Slovak border. From samples of biological material collected in 2017- 2018, we identifi ed genotypes of 42 wolves. All studied loci were polymorphic, with mean number of alleles being Na = 5.077 and...
Article
Full-text available
The increasing trend of large carnivore attacks on humans not only raises human safety concerns but may also undermine large carnivore conservation efforts. Although rare, attacks by brown bears Ursus arctos are also on the rise and, although several studies have addressed this issue at local scales, information is lacking on a worldwide scale. Her...
Article
Full-text available
Satellite telemetry is an increasingly utilized technology in wildlife research, and current devices can track individual animal movements at unprecedented spatial and temporal resolutions. However, as we enter the golden age of satellite telemetry, we need an in-depth understanding of the main technological, species-specific and environmental fact...
Data
R-code for boosted beta regression (Fix acquisition rate). (R)
Data
Covariate partial effects on the variability of the fix acquisition rate. (PDF)
Data
Tagged individuals per species. (PDF)
Data
Covariate partial effects on the variability of the Overall fix success rate. (PDF)
Data
Trends in observed data. (PDF)
Data
Global dataset for boosted beta regressions. (CSV)
Data
Description of data fields in S1 Data. (CSV)
Data
Satellite telemetry articles published. (PDF)
Data
Distribution of response variables and covariates. (PDF)
Data
Unit purchase and operation costs. (PDF)
Data
R-code for boosted beta regression (Overall fix success rate). (R)
Data
Standardized data collection questionnaire. (PDF)
Data
Satellite telemetry evaluations. (PDF)
Article
Full-text available
Of the big mammal taxa, the brown bear (Ursus arctos) is one of a few surviving species and one of the two largest terrestrial carnivorans that have successfully exploited caves. Greenish and blueish patches were collected in August 2016 from the cave walls and pine twigs in the pseudokarstic Głowoniowa Nyża Cave in the High Tatra Mountains, southe...