Krzysztof Kujawa

Krzysztof Kujawa
Wroclaw Medical University · Statistical Analysis Centre

Ph.D.

About

108
Publications
27,754
Reads
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858
Citations
Citations since 2016
35 Research Items
460 Citations
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2016201720182019202020212022020406080
2016201720182019202020212022020406080
2016201720182019202020212022020406080
Introduction
I studied animal ecology and biodiversity (mainly as field ornithologist) in farmlands for many years (1987-2020). The sixth global extinction and nature conservation are main frameworks and backgrounds for my activity. At present, my main job is supporting scientific research projects in medicine in the field of statistical analyses (at Wrocław Medical University). However, I also continue completing projects, being realized in last years (flower strips, or bird and invertebrate ecology).
Additional affiliations
December 2020 - present
Wroclaw Medical University
Position
  • Head
November 1987 - December 2020
Institute of Agricultural and Forest Environment PAS
Position
  • Managing Director
Education
October 1983 - July 1988
University of Wroclaw
Field of study
  • Biology

Publications

Publications (108)
Article
Full-text available
Background: There is a need to assess a relationship between the psychoemotional state of patients and the occurrence and the intensity of pain and temporomandibular disorders (TMD) in relation to a Polish population. There are no such precision data in the literature relating to the population of big Eastern European country. The study conducted b...
Article
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Background: The COVID-GRAM is a clinical risk rating score for predicting the prognosis of hospitalized COVID-19 infected patients. Aim: Our study aimed to evaluate the use of the COVID-GRAM score in patients with COVID-19 based on the data from the COronavirus in the LOwer Silesia (COLOS) registry. Material and methods: The study group (834 p...
Preprint
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Background: Cancer patients are a particularly vulnerable risk group of the severe course of COVID-19 due to, i.e. suppression of the immune system. The study aimed to find links between parameters registered on admission to the hospital, and the risk of latter death in oncology patients with COVID-19. Design: Retrospective cohort study. Methods: T...
Article
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There is accumulating evidence on the perinatal aspects of COVID-19, but available data are still insufficient. The reports on perinatal aspects of COVID-19 have been published on a small group of patients. Vertical transmission has been noted. The SARS-CoV-2 genome can be detected in umbilical cord blood and at-term placenta, and the infants demon...
Article
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Background: Even though coronary artery disease (CAD) is considered an independent risk factor of an unfavorable outcome of SARS-CoV-2-infection, the clinical course of COVID-19 in subjects with CAD is heterogeneous, ranging from clinically asymptomatic to fatal cases. Since the individual C2HEST components are similar to the COVID-19 risk factors...
Article
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Deviations in laboratory tests assessing liver function in patients with COVID-19 are frequently observed. Their importance and pathogenesis are still debated. In our retrospective study, we analyzed liver-related parameters: aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP), gamma-glutamyltransferase (GGT...
Article
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Introduction: Lipedema is a disorder characterized by an excessive accumulation of subcutaneous body fat, mainly bilateral and symmetrical accumulation of fat deposits, particularly in the lower extremities excluding feet. Pain (spontaneous or with palpation) and increased capillary fragility with bruising are also part of clinical presentation. I...
Article
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Background: Patients with heart failure represent a vulnerable population for COVID-19 and are prone to having worse prognoses and higher fatality rates. Still, the clinical course of the infection is dynamic, and complication occurrence in particular in patients with heart failure is fairly unpredictable. Considering that individual components of...
Article
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Nowadays, littering is one of the biggest challenges that environmental conservation is facing. Although beverage containers, such as bottles and cans, belong to the most common threats in this context, their effect on animals has been poorly studied. The aim of this study was to assess the diversity and mortality level of the animal taxa entering...
Article
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Gastrointestinal manifestations may accompany the respiratory symptoms of COVID-19. Abdominal pain (AP) without nausea and vomiting is one of the most common. To date, its role and prognostic value in patients with COVID-19 is still debated. Therefore, we performed a retrospective analysis of 2184 individuals admitted to hospital due to COVID-19. W...
Article
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Background: Since the outbreak of the COVID-19 pandemic, a growing number of evidence suggests that COVID-19 presents sex-dependent differences in clinical course and outcomes. Nevertheless, there is still an unmet need to stratify the risk for poor outcome at the beginning of hospitalization. Since individual C2HEST components are similar COVID-19...
Preprint
Full-text available
Background: An adequate dietary energy supply is particularly important in patients with lipedema as it promotes weight and fat loss. Accurate estimation of resting metabolic rate (RMR) allows implementing a proper calorie restriction diet in patients with lipedema. Therefore, an accurate assessment of energy demand in patients with lipedema is cru...
Article
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Senility has been identified among the strongest risk predictors for unfavorable COVID-19-outcome. However, even in the elderly population, the clinical course of infection in individual patients remains unpredictable. Hence, there is an urgent need for developing a simple tool predicting adverse COVID-19-outcomes. We assumed that the C2HEST-score...
Article
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Background: Diabetes mellitus is among the most frequent comorbidities worsening COVID-19 outcome. Nevertheless, there are no data regarding the optimal risk stratification of patients with diabetes and COVID-19. Since individual C2HEST components reflect the comorbidities, we assumed that the score could predict COVID-19 outcomes. Material and m...
Article
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The coronavirus disease 2019 (COVID-19) shows high incidence of thromboembolic events in humans. In the present study, we aimed to evaluate if anticoagulation prior to COVID-19 infection may impact clinical profile, as well as mortality rate among patients hospitalized with COVID-19. The study was based on retrospective analysis of medical records...
Article
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Vaccination against SARS-CoV-2 is currently the best tool in the fight against the COVID-19 pandemic. However, there are limited data on its efficacy and safety after hematopoietic stem cell transplantation (HCT). We present the results of a prospective analysis of the humoral response to two doses of BNT162b2 mRNA vaccine in 93 adult patients, inc...
Article
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The disease caused by coronavirus SARS-CoV-2 (COVID-19) can affect almost all organs of the human body, including kidneys. We conducted a one-center study to comprehensively analyze the effects of kidney involvement on the course and outcomes in patients hospitalized with COVID-19, depending on the estimated glomerular filtration rate (eGFR) at adm...
Article
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A lichenological inventory was conducted in the pine stands in the south-eastern region of Żerków-Czeszewo Landscape Park. The aim of this study was to recognize the lichen species diversity on the bark of Pinus sylvestris by considering tree age and forest habitat type. In total, 26 species of lichenized fungi were found on the bark of P. sylvestr...
Article
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Increased urbanisation is leading to littering of the environment. However, some animals may adapt to live in such altered habitats. The aim of this study was to assess whether discarded containers can serve as a suitable microhabitat for spiders. The study was conducted in 10 woodland areas in the city of Wrocław, Poland. In September 2018, a tota...
Article
Farmland water bodies (FWBs) are marginal habitats in the agricultural landscape. However, regardless of their small size, they are refuges for natural vegetation and species-rich animal assemblages. They are especially important in areas where the intensification of agricultural activities reduces the ecological quality of the landscape. The study...
Article
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With the loss of natural and semi-natural habitats, the diversity and the amount of ecosystem services that can be provided in the agricultural landscape are diminishing, and self-regulatory abilities decrease. The aim of the research (72 sample plots – 1 x 1 km squares, mean time span equal to 8 years) was to recognise the changes in the number an...
Article
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Ecological intensification of agriculture (e.g., with the use of wildflower strips) is being currently discussed as a mean for gaining high yields, preserving high biodiversity of farmland. The aim of this study was to assess the efficiency of annual wildflower strips (WFSs) established in rye field (RF) in (1) increasing species richness and abund...
Article
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Defining biodiversity conservation goals requires representative and reliable data. However, data collected with the use of different methods can lead to divergent conclusions. Regardless of the high level of biodiversity of Mediterranean habitats, very little attention was paid in developing methods allowing rapid and scalable estimation of their...
Article
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The presence of anthropogenic waste in the environment is one of the most pervasive pollution problems affecting wildlife around the world. Among different types of rubbish, beverage containers represent an ecological trap for invertebrates. However, it also may serve as a nest site. In the present study, we aim to assess if ants can exploit discar...
Article
Field margins are inherent elements of European agricultural landscapes, thought to be crucial for maintaining a high biodiversity level. The interactions between the structure of field margins and biota have been recognized, yet the understanding of the importance of various components of the margins and adjacent areas is still incomplete. The aim...
Article
This study (conducted in western Poland) was aimed at recognizing the importance of straw heaps (SH) and manure heaps (MH) located in cultivated fields for fungal diversity in farmland. Fungi (24 species and 1 sterile form) were found in 19.1% of SH (N = 89) and 60.4% of MH (N = 169). The estimated species richness (Chao2) was 29.8 ± 12.7 and 18.1...
Data
The Excel file contains: - raw data on occurrence of macrofungi in straw or manure heaps located in western Poland in 2011 - habitat variables quantifying heap features and their location in the landscape The study was carried out in the Gen. Dezydery Chłapowski Landscape Park, located in West Poland. Manure and straw heaps consist of a mixture o...
Book
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Jest to zbiór rekomendacji i przykładów dobrych praktyk w planowaniu, projektowaniu, zakładaniu, gospodarowaniu i ochronie zadrzewień w krajobrazie rolniczym. Część naszych rekomendacji wymaga bardzo daleko idących zmian w prawie. Liczymy na to, że niniejsze opracowanie przyczyni się do ich wprowadzenia. Dopiero wtedy możliwe będzie objęcie zadrzew...
Article
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Intensification of agriculture causes the impoverishment of landscape and biological diversity. This is related to the deterioration of the ability to provide ecosystem services by farmland habitats. Maintaining a diversified agricultural landscape structure is crucial for sustainable agriculture. However, till now agri-environmental measures (AES)...
Article
The objective of this work was to determine the effect of land use on lichen richness and their functional groups in agricultural land. A significant overall effect of land use on the number of species was found. In general, there was a marked dissimilarity with regard to species richness of forest versus non-forest sites. An analysis of some ecolo...
Article
The paper presents the Crifola frondosa distribution in the central part of the General Dezydery Chlapowski Landscape Park. 14 fruit bodies of the species were found developing on 8 specimens of Quercus robur, located in rural parks, tree belts along roads and tree alleys.
Poster
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The poster presents the results of study on the relationships between four selected bird species (of high conservation priority in EU) and habitat structure of small mid-field wooded patches and hedgerows (E. hortulana, E. calandra, L. collurio and S. nisoria). The study highlights necessity of the protecton of existing mid-field hadgerows and othe...
Article
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A growing body of evidence suggests trophic generalism (feeding on resources from more than one trophic level and/or on different resources of the same trophic level) is a widespread feature among ground beetles (Coleoptera: Carabidae). However, it remains unclear whether trophic generalism applies to single individuals, at the intrapopulation or i...
Article
Due to decrease in the area of extensively managed, semi-natural grasslands, that contribute to high biodiversity level preservation, the conversion of highly productive meadows to extensively managed, species-rich grasslands is now regarded as an important task for nature conservation. The aim of this long-term study was to assess the significance...
Article
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Using the assessments of conservation status of flora and fauna, we discuss declining species in semi-natural field margins and stress the importance of these vanishing habitats. Seventy field margins in the diverse farmland of SW Poland were investigated with regard to their vascular plants, bryophytes and breeding birds. We checked the occurrence...
Article
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This study on the lacrimal gland (LG) and the superficial gland of the third eyelid (SGTE) was conducted on 21 sexually mature Roe deer (11 males and 10 females). The research material was obtained from Roe deer shot by the Hunting Association during their prescribed hunting season. The shape and topography of the glands are described macroscopical...
Article
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The macroanatomical research of the aorticorenal ganglion (ARG) was conducted on 14 domestic pigs … 4 males and 10 females of 110 days of gestation. The pigs were obtained from one uterus. The examinations were carried out using the method of macroscopic preparation with a forehead magnifying glass and binocular (magnification 2.0…5.0x). The measur...
Chapter
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Article
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Neutral theory focuses on random dispersal and species equivalence, and challenges views on the ecological importance of life history traits and habitat properties in explaining community assembly and the spatial distribution of species. Ground beetles are a popular model taxon to test predictions of contrasting macroecological theories. Here we in...
Article
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Effect of black locust Robinia pseudacacia in mid-field woody vegetation clumps for diversity and population density of breeding birds. Black locust is commonly considered in Poland (and in Europe) as undesirable species. The shrub layer in black locust tree stands is poorly developed and species-poor, herb layer is monotonous and composed mostly b...
Article
The purpose of the study was to evaluate the clinical significance of the intensity of metallothionein (MT-I/II) expression and its relationship to two different proliferation markers, Ki-67 antigen and minichromosome maintaince 2 protein (MCM-2) in 117 patients with invasive ductal breast carcinoma (IDC). A significantly higher MT-I/II expression...
Article
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Birds are commonly used as an example of the strongly declining farmland biodiversity in Europe. The pop-ulations of many species have been shown to suffer from intensification of management, reduction of landscape het-erogeneity, and habitat loss and fragmentation. These conditions particularly dominate farmland in the economically well developed...
Article
A study was conducted to determine the occurrence of bird species in relation to 70 field margins of an agricultural landscape in SW Poland. Three types of margins were divided according to the volume of tall vegetation, i.e. herbaceous, shrubby, and tree lined. Fifty breeding bird species were recorded, with a mean density of 33.2 pairs/km. The do...
Article
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Zmiany w wykorzystaniu przestrzeni rolniczej w Eu-ropie znacząco wpłynęły na zmiany liczebności, przede wszystkim jej zmniejszenie, zarówno w odniesieniu do poszczególnych gatunków, jak i całej bioróżnorodności. Mówiąc precyzyjniej – większość populacji roślin i zwierząt związanych z krajobrazem rolniczym zmniejsza liczebność z powodu intensyfikacj...
Article
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The study was carried out on lowland agricultural lands in western Poland between July and August 2007. The influence of the proximity of forested areas on the occurrence of foliage-dwelling spiders was defined by measuring the abundance of spider webs on five transects situated at distances of 0, 20, 40, 60 and 80 metres from the forest edge. Gene...
Article
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The paper presents the results of studies on larger Asco-and Basydiomycota of the Bieszczady Mts – a part of the Polish Carpatians least exposed to the human impact. Literature data and the results of the first year of research within the project "Species Diversity of Fungi in the Western Bieszczady Mts" are summarized. The paper includes a list of...
Chapter
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Ecosystems and landscape elements undergo different kinds of changes and processes, of which a significant part is caused by human activity. One of these processes, which has been intensively studied for a long time, is habitat fragmentation. It leads to division of a given habitat patches into a smaller ones and to increase ecotone density in a la...
Article
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The aim of the study (carried out 25 km south of Poznań, western Poland) was to determine the impact of Red Fox on bird abundance on farmland. Bird abundance was studied in the years 1999-2000 and 2005-2007 in three categories of sampling plots: 1) in small woods — with or without active fox dens, 2) along transects — starting from dens and running...
Article
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The aim of the study was to recognize features characterizing development of macrofungi communities occurring in affor-estations planted in crop fields and to evalu-ate the role of these habitats in conservation of macrofungi and preserve high species richness. The study was carried out in 1998–2006 and covered four shelterbelts (planted in 1993–19...