• dr Katarzyna Bzdęga
Stanowisko: Adiunkt
Jednostka: Wydział Nauk Przyrodniczych
Adres: 40-032 Katowice, ul. Jagiellońska 28
Piętro: I
Numer pokoju: A-127
Telefon: (32) 2009 448
E-mail: katarzyna.bzdega@us.edu.pl
Spis publikacji: Spis wg CINiBA
Spis publikacji: Spis wg OPUS
Scopus Author ID: 23388615400
Publikacje z bazy Scopus
2021
Tokarska-Guzik, B.; Bzdęga, K.; Dajdok, Z.; Mazurska, K.; Solarz, W.
Invasive alien plants in Poland - The state of research and the use of the results in practice Journal Article
In: Environmental and Socio-Economic Studies, vol. 9, no. 4, pp. 71-95, 2021, ISSN: 23540079, (2).
@article{2-s2.0-85123797712,
title = {Invasive alien plants in Poland - The state of research and the use of the results in practice},
author = { B. Tokarska-Guzik and K. Bzdęga and Z. Dajdok and K. Mazurska and W. Solarz},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85123797712&doi=10.2478%2fenviron-2021-0027&partnerID=40&md5=d9523f0bedd6a427b64109abc374c1f4},
doi = {10.2478/environ-2021-0027},
issn = {23540079},
year = {2021},
date = {2021-01-01},
journal = {Environmental and Socio-Economic Studies},
volume = {9},
number = {4},
pages = {71-95},
publisher = {De Gruyter Open Ltd},
abstract = {The participation of species of alien origin in the flora of individual regions of the world is increasing. A large proportion of these species pose a threat to biodiversity. Issues of the dynamics of changes in the flora and the scale and pace of the processes, with particular emphasis on the biology, ecology, chorology, and genetic variability of the populations of plants of alien origin, including those alien species which are invasive, have been the subject of many years of research in this field in Poland. The present study is an overview of the state of research on invasive plant species in Poland, including the main results of the basic and applied research which have provided the basis for (i) the preparation of a list of invasive plant species for Poland; (ii) assessing the degree of invasiveness of the species analysed, in accordance with the adoption of criteria and the development of methodological solutions. In this work, a new version of the list of invasive plant species has been prepared on the basis of earlier studies, combining theoretical and practical aspects of definition, and it is compared with the list of invasive alien plant species considered to constitute a threat to the EU and Poland as a member country. The categorization (risk assessment) of invasive alien species along with the identification of the most endangered types of natural habitats is often used in practice in the management of invasive plants in Poland. The results of our research have fed into the formulation of legal regulations at the global and regional levels. © 2021 Barbara Tokarska-Guzik et al.},
note = {2},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The participation of species of alien origin in the flora of individual regions of the world is increasing. A large proportion of these species pose a threat to biodiversity. Issues of the dynamics of changes in the flora and the scale and pace of the processes, with particular emphasis on the biology, ecology, chorology, and genetic variability of the populations of plants of alien origin, including those alien species which are invasive, have been the subject of many years of research in this field in Poland. The present study is an overview of the state of research on invasive plant species in Poland, including the main results of the basic and applied research which have provided the basis for (i) the preparation of a list of invasive plant species for Poland; (ii) assessing the degree of invasiveness of the species analysed, in accordance with the adoption of criteria and the development of methodological solutions. In this work, a new version of the list of invasive plant species has been prepared on the basis of earlier studies, combining theoretical and practical aspects of definition, and it is compared with the list of invasive alien plant species considered to constitute a threat to the EU and Poland as a member country. The categorization (risk assessment) of invasive alien species along with the identification of the most endangered types of natural habitats is often used in practice in the management of invasive plants in Poland. The results of our research have fed into the formulation of legal regulations at the global and regional levels. © 2021 Barbara Tokarska-Guzik et al.
Zarychta, R.; Zarychta, A.; Bzdęga, K.
Ecogeomorphological transformations of aeolian form—the case of a parabolic dune, poland Journal Article
In: Remote Sensing, vol. 13, no. 19, 2021, ISSN: 20724292.
@article{2-s2.0-85116403800,
title = {Ecogeomorphological transformations of aeolian form—the case of a parabolic dune, poland},
author = { R. Zarychta and A. Zarychta and K. Bzdęga},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85116403800&doi=10.3390%2frs13193937&partnerID=40&md5=3e65d73da6778b1ea7a6c340830b0ad6},
doi = {10.3390/rs13193937},
issn = {20724292},
year = {2021},
date = {2021-01-01},
journal = {Remote Sensing},
volume = {13},
number = {19},
publisher = {MDPI},
abstract = {The range of natural environmental degradation caused by anthropogenic activity may include geomorphological forms such as dunes resulting from the build-up activity of the wind. In effect, such environmental transformation affects changes connected not only with their relief, but also with the presence and health of diverse plant and animal inhabitants. The subject of the survey was a parabolic dune with asymmetric shape, the sand of which was subjected to exploitation over many years. Terrain data acquired by means of GNSS (Global Navigation Satellite Systems) served to elaborate the present relief of the surveyed dune and to reconstruct its primary relief. These were mainly places where the impacts of human activities were recorded. For this purpose, ordinary kriging (OK) estimation was performed. Simultaneously, satellite data and UAV (Unmanned Aerial Vehicle) imaging were acquired, and subjected to image fusion in order to acquire near infrared bands (NIR), red, green, blue in high spatial resolution. These in turn were applied so as to estimate the condition of the vegetation overplanting the dune and surrounding terrain. The correctness of the modelling was verified by cross-validation (CV), which disclosed low error values. Such values in present and primary relief were, respectively, mean error (ME) at −0.009 and −0.014, root mean square error (RMSE) at 0.564 and 0.304 and root mean square standardised error (RMSSE) at 0.999 and 1.077. Image fusion, with use of pansharpening allowed a colour-infrared composition (CIR) and a Modified Chlorophyll Absorption in Reflectance Index 1 (MCARI1) to be obtained. Their analysis disclosed that vegetation on the dune is characterised by worse health condition as compared with the surrounding area thereof. The proposed approach enabled the environmental condition of the surveyed dune to be analysed, and thereby it allows for a determination of the consequences of further uncontrolled sand recovery without taking into account the historical cartographic materials customarily considered to be the main source of information. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The range of natural environmental degradation caused by anthropogenic activity may include geomorphological forms such as dunes resulting from the build-up activity of the wind. In effect, such environmental transformation affects changes connected not only with their relief, but also with the presence and health of diverse plant and animal inhabitants. The subject of the survey was a parabolic dune with asymmetric shape, the sand of which was subjected to exploitation over many years. Terrain data acquired by means of GNSS (Global Navigation Satellite Systems) served to elaborate the present relief of the surveyed dune and to reconstruct its primary relief. These were mainly places where the impacts of human activities were recorded. For this purpose, ordinary kriging (OK) estimation was performed. Simultaneously, satellite data and UAV (Unmanned Aerial Vehicle) imaging were acquired, and subjected to image fusion in order to acquire near infrared bands (NIR), red, green, blue in high spatial resolution. These in turn were applied so as to estimate the condition of the vegetation overplanting the dune and surrounding terrain. The correctness of the modelling was verified by cross-validation (CV), which disclosed low error values. Such values in present and primary relief were, respectively, mean error (ME) at −0.009 and −0.014, root mean square error (RMSE) at 0.564 and 0.304 and root mean square standardised error (RMSSE) at 0.999 and 1.077. Image fusion, with use of pansharpening allowed a colour-infrared composition (CIR) and a Modified Chlorophyll Absorption in Reflectance Index 1 (MCARI1) to be obtained. Their analysis disclosed that vegetation on the dune is characterised by worse health condition as compared with the surrounding area thereof. The proposed approach enabled the environmental condition of the surveyed dune to be analysed, and thereby it allows for a determination of the consequences of further uncontrolled sand recovery without taking into account the historical cartographic materials customarily considered to be the main source of information. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Bzdęga, K.; Zarychta, A.; Urbisz, A.; Szporak-Wasilewska, S.; Ludynia, M.; Fojcik, B.; Tokarska-Guzik, B.
In: Ecological Indicators, vol. 121, 2021, ISSN: 1470160X, (7).
@article{2-s2.0-85097586350,
title = {Geostatistical models with the use of hyperspectral data and seasonal variation – A new approach for evaluating the risk posed by invasive plants},
author = { K. Bzdęga and A. Zarychta and A. Urbisz and S. Szporak-Wasilewska and M. Ludynia and B. Fojcik and B. Tokarska-Guzik},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85097586350&doi=10.1016%2fj.ecolind.2020.107204&partnerID=40&md5=d94836fea21a30c97a86f9a1e40534b8},
doi = {10.1016/j.ecolind.2020.107204},
issn = {1470160X},
year = {2021},
date = {2021-01-01},
journal = {Ecological Indicators},
volume = {121},
publisher = {Elsevier B.V.},
abstract = {The general trend of ongoing plant invasion and the increasing number of species that may become invasive in the future, force seeking solutions that can improve the efficiency and economy of their management. Thus, we applied a novel approach combining the use of geostatistical interpolators such as ordinary kriging (OK) and co-kriging (CK) with environmental and hyperspectral data to evaluate the potential threat associated with the distribution of invasive plant species and to predict their probabilities of occurrence above the selected threshold of 10%. The specific spatial patterns of the probability of occurrence of Heracleum sosnowskyi and Fallopia spp. were modelled in two study areas in southern Poland. The significant achievement of this study was the application of geostatistical tools producing results characterized by a degree of precision quantified by cross-validation errors, and prediction errors after field verification. OK and CK returned root mean squared error (RMSE) values in a range from 0.21 to 0.51 and 0.21 to 0.47, respectively. For OK and CK, the prediction errors resulting from field verification in the following year were between 0.03–0.39, and 0.03–0.29, respectively. Additionally, the study provided the first prediction maps (2D) and Digital Prediction Models (DPMs) (3D) visualizations of the probability of occurrence of both invasive plants. Although the proposed approach is illustrated with real case studies related to Heracleum sosnowskyi and Fallopia spp., it could be extended to other species. This demonstrates the potential of an effective alternative strategy for evaluating the risk posed by invasive plants, that will be able to provide fast, low cost and effective prediction and monitoring of their spread. For institutions dealing with invasive plants, this may be beneficial and help to reduce the negative consequences of their improper management. © 2020 University of Silesia},
note = {7},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The general trend of ongoing plant invasion and the increasing number of species that may become invasive in the future, force seeking solutions that can improve the efficiency and economy of their management. Thus, we applied a novel approach combining the use of geostatistical interpolators such as ordinary kriging (OK) and co-kriging (CK) with environmental and hyperspectral data to evaluate the potential threat associated with the distribution of invasive plant species and to predict their probabilities of occurrence above the selected threshold of 10%. The specific spatial patterns of the probability of occurrence of Heracleum sosnowskyi and Fallopia spp. were modelled in two study areas in southern Poland. The significant achievement of this study was the application of geostatistical tools producing results characterized by a degree of precision quantified by cross-validation errors, and prediction errors after field verification. OK and CK returned root mean squared error (RMSE) values in a range from 0.21 to 0.51 and 0.21 to 0.47, respectively. For OK and CK, the prediction errors resulting from field verification in the following year were between 0.03–0.39, and 0.03–0.29, respectively. Additionally, the study provided the first prediction maps (2D) and Digital Prediction Models (DPMs) (3D) visualizations of the probability of occurrence of both invasive plants. Although the proposed approach is illustrated with real case studies related to Heracleum sosnowskyi and Fallopia spp., it could be extended to other species. This demonstrates the potential of an effective alternative strategy for evaluating the risk posed by invasive plants, that will be able to provide fast, low cost and effective prediction and monitoring of their spread. For institutions dealing with invasive plants, this may be beneficial and help to reduce the negative consequences of their improper management. © 2020 University of Silesia
2020
Zarychta, R.; Zarychta, A.; Bzdęga, K.
Progress in the reconstruction of terrain relief before extraction of rock materials-The case of Liban Quarry, Poland Journal Article
In: Remote Sensing, vol. 12, no. 10, 2020, ISSN: 20724292, (4).
@article{2-s2.0-85085542375,
title = {Progress in the reconstruction of terrain relief before extraction of rock materials-The case of Liban Quarry, Poland},
author = { R. Zarychta and A. Zarychta and K. Bzdęga},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85085542375&doi=10.3390%2frs12101548&partnerID=40&md5=4093189cc454de1206873af2c0ed9367},
doi = {10.3390/rs12101548},
issn = {20724292},
year = {2020},
date = {2020-01-01},
journal = {Remote Sensing},
volume = {12},
number = {10},
publisher = {MDPI AG},
abstract = {Open pit mining leads to irreversible changes in topographical relief, which makes a return to the original morphology virtually impossible. This is important for quarries that were part of former mining areas. This research presents an innovative approach to the reconstruction of the relief of anthropogenically transformed land on the example of Liban Quarry in Cracow, where operations began before 1873 to 1986. The basis for the reconstructed area was a Topographic Map of Poland with a scale 1:10,000 from 1997, from which a set of data was obtained to perform spatial analyses. The estimation was conducted using the ordinary kriging method, enabling a reconstruction of the morphology of the studied area and presenting it in the form of a hypsometric map and a digital elevation model. The correctness of the modelling was verified by cross-validation and a kriging standard deviation map (SDOK). These revealed low values of estimation errors in the places without contour lines on the base map. The comparison of the obtained maps and model with a Tactical Map of Poland with a scale 1:100,000 from 1934 indicated great similarities. The highest interpolation error value was recorded in the part of the pit where the difference between the actual and reconstructed elevation was about 30mon average. In the exploited part, the SDOK did not exceed 0.52 m, and in the entire studied area, it reached a maximum of 0.56 m. The proposed approach fulfilled the assumptions of reconstruction, as the analysis revealed elements matching the historic relief in both forms of presentation of the topography of the quarry, on the obtained hypsometric map and on the tactical map. Our study is among the very few in the world concerning the application of geostatistics in the restoration of the relief of land transformed by open pit mining activities. © 2020 by the authors.},
note = {4},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Open pit mining leads to irreversible changes in topographical relief, which makes a return to the original morphology virtually impossible. This is important for quarries that were part of former mining areas. This research presents an innovative approach to the reconstruction of the relief of anthropogenically transformed land on the example of Liban Quarry in Cracow, where operations began before 1873 to 1986. The basis for the reconstructed area was a Topographic Map of Poland with a scale 1:10,000 from 1997, from which a set of data was obtained to perform spatial analyses. The estimation was conducted using the ordinary kriging method, enabling a reconstruction of the morphology of the studied area and presenting it in the form of a hypsometric map and a digital elevation model. The correctness of the modelling was verified by cross-validation and a kriging standard deviation map (SDOK). These revealed low values of estimation errors in the places without contour lines on the base map. The comparison of the obtained maps and model with a Tactical Map of Poland with a scale 1:100,000 from 1934 indicated great similarities. The highest interpolation error value was recorded in the part of the pit where the difference between the actual and reconstructed elevation was about 30mon average. In the exploited part, the SDOK did not exceed 0.52 m, and in the entire studied area, it reached a maximum of 0.56 m. The proposed approach fulfilled the assumptions of reconstruction, as the analysis revealed elements matching the historic relief in both forms of presentation of the topography of the quarry, on the obtained hypsometric map and on the tactical map. Our study is among the very few in the world concerning the application of geostatistics in the restoration of the relief of land transformed by open pit mining activities. © 2020 by the authors.
2019
Majka, J.; Bzdęga, K.; Janiak, A.; Ćwiek-Kupczyńska, H.; Krajewski, P.; Ksiązczyk, T.; Zwierzykowski, Z.
Cytogenetic and molecular genotyping in the allotetraploid Festuca pratensis × Lolium perenne hybrids Journal Article
In: BMC Genomics, vol. 20, no. 1, 2019, ISSN: 14712164, (4).
@article{2-s2.0-85065722326,
title = {Cytogenetic and molecular genotyping in the allotetraploid Festuca pratensis × Lolium perenne hybrids},
author = { J. Majka and K. Bzdęga and A. Janiak and H. Ćwiek-Kupczyńska and P. Krajewski and T. Ksiązczyk and Z. Zwierzykowski},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85065722326&doi=10.1186%2fs12864-019-5766-2&partnerID=40&md5=f2c182afbce1238217c89c8b71df8864},
doi = {10.1186/s12864-019-5766-2},
issn = {14712164},
year = {2019},
date = {2019-01-01},
journal = {BMC Genomics},
volume = {20},
number = {1},
publisher = {BioMed Central Ltd.},
abstract = {Background: Species of the Festuca and Lolium genera, as well as intergeneric Festuca × Lolium (Festulolium) hybrids, are valuable fodder and turf grasses for agricultural and amenity purposes worldwide. Festulolium hybrids can merge in their genomes agronomically important characteristics. However, in polyploid plants, especially in allopolyploids, the hybridization of divergent genomes could contribute to various abnormalities, such as variability in chromosome number, structural rearrangements, and/or disorders in inheritance patterns. Here we studied these issues in allotetraploid Festuca pratensis × Lolium perenne hybrids. Results: Cytogenetic procedures, including fluorescent in situ hybridization, genomic in situ hybridization, and molecular markers - inter-simple sequence repeats (ISSR) were exploited. This cytogenetic approach indicated the dynamics in the number and distribution of ribosomal RNA genes and structural rearrangements for both parental genomes (Festuca and Lolium) in hybrid karyotypes. The separate analysis of F. pratensis and L. perenne chromosomes in hybrid plants (F2-F3 generations of F. pratensis × L. perenne) revealed the asymmetrical level of rearrangements. Recognized structural changes were mainly located in the distal part of chromosome arms, and in chromosomes bearing ribosomal DNA, they were more frequently mapped in arms without this sequence. Based on the ISSR markers distribution, we found that the tetrasomic type of inheritance was characteristic for the majority of ISSR loci, but the disomic type was also observed. Nonetheless, no preference in the transmission of either Festuca or Lolium alleles to the following generations of allotetraploid F. pratensis × L. perenne hybrid was observed. Conclusion: Our study reports cytogenetic and molecular genotyping of the F. pratensis × L. perenne hybrid and its following F2-F3 progenies. The analysis of 137 allotetraploid F. pratensis × L. perenne hybrids revealed the higher level of recombination in chromosomes derived from F. pratensis genome. The results of ISSR markers indicated a mixed model of inheritance, which may be characteristic for these hybrids. © 2019 The Author(s).},
note = {4},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Background: Species of the Festuca and Lolium genera, as well as intergeneric Festuca × Lolium (Festulolium) hybrids, are valuable fodder and turf grasses for agricultural and amenity purposes worldwide. Festulolium hybrids can merge in their genomes agronomically important characteristics. However, in polyploid plants, especially in allopolyploids, the hybridization of divergent genomes could contribute to various abnormalities, such as variability in chromosome number, structural rearrangements, and/or disorders in inheritance patterns. Here we studied these issues in allotetraploid Festuca pratensis × Lolium perenne hybrids. Results: Cytogenetic procedures, including fluorescent in situ hybridization, genomic in situ hybridization, and molecular markers - inter-simple sequence repeats (ISSR) were exploited. This cytogenetic approach indicated the dynamics in the number and distribution of ribosomal RNA genes and structural rearrangements for both parental genomes (Festuca and Lolium) in hybrid karyotypes. The separate analysis of F. pratensis and L. perenne chromosomes in hybrid plants (F2-F3 generations of F. pratensis × L. perenne) revealed the asymmetrical level of rearrangements. Recognized structural changes were mainly located in the distal part of chromosome arms, and in chromosomes bearing ribosomal DNA, they were more frequently mapped in arms without this sequence. Based on the ISSR markers distribution, we found that the tetrasomic type of inheritance was characteristic for the majority of ISSR loci, but the disomic type was also observed. Nonetheless, no preference in the transmission of either Festuca or Lolium alleles to the following generations of allotetraploid F. pratensis × L. perenne hybrid was observed. Conclusion: Our study reports cytogenetic and molecular genotyping of the F. pratensis × L. perenne hybrid and its following F2-F3 progenies. The analysis of 137 allotetraploid F. pratensis × L. perenne hybrids revealed the higher level of recombination in chromosomes derived from F. pratensis genome. The results of ISSR markers indicated a mixed model of inheritance, which may be characteristic for these hybrids. © 2019 The Author(s).
2018
Marcinkowska-Ochtyra, A.; Jarocińska, A.; Bzdęga, K.; Tokarska-Guzik, B.
Classification of expansive grassland species in different growth stages based on hyperspectral and LiDAR data Journal Article
In: Remote Sensing, vol. 10, no. 12, 2018, ISSN: 20724292, (28).
@article{2-s2.0-85058896750,
title = {Classification of expansive grassland species in different growth stages based on hyperspectral and LiDAR data},
author = { A. Marcinkowska-Ochtyra and A. Jarocińska and K. Bzdęga and B. Tokarska-Guzik},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85058896750&doi=10.3390%2frs10122019&partnerID=40&md5=7948dffb33186490b670e3459433a5e1},
doi = {10.3390/rs10122019},
issn = {20724292},
year = {2018},
date = {2018-01-01},
journal = {Remote Sensing},
volume = {10},
number = {12},
publisher = {MDPI AG},
abstract = {Expansive species classification with remote sensing techniques offers great support for botanical field works aimed at detection of their distribution within areas of conservation value and assessment of the threat caused to natural habitats. Large number of spectral bands and high spatial resolution allows for identification of particular species. LiDAR (Light Detection and Ranging) data provide information about areas such as vegetation structure. Because the species differ in terms of features during the growing season, it is important to know when their spectral responses are unique in the background of the surrounding vegetation. The aim of the study was to identify two expansive grass species: Molinia caerulea and Calamagrostis epigejos in the Natura 2000 area in Poland depending on the period and dataset used. Field work was carried out during late spring, summer and early autumn, in parallel with remote sensing data acquisition. Airborne 1-m resolution HySpex images and LiDAR data were used. HySpex images were corrected geometrically and atmospherically before Minimum Noise Fraction (MNF) transformation and vegetation indices calculation. Based on a LiDAR point cloud generated Canopy Height Model, vegetation structure from discrete and full-waveform data and topographic indexes were generated. Classifications were performed using a Random Forest algorithm. The results show post-classification maps and their accuracies: Kappa value and F1 score being the harmonic mean of producer (PA) and user (UA) accuracy, calculated iteratively. Based on these accuracies and botanical knowledge, it was possible to assess the best identification date and dataset used for analysing both species. For M. caerulea the highest median Kappa was 0.85 (F1 = 0.89) in August and for C. epigejos 0.65 (F1 = 0.73) in September. For both species, adding discrete or full-waveform LiDAR data improved the results. We conclude that hyperspectral (HS) and LiDAR airborne data could be useful to identify grassland species encroaching into Natura 2000 habitats and for supporting their monitoring. © 2018 by the authors.},
note = {28},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Expansive species classification with remote sensing techniques offers great support for botanical field works aimed at detection of their distribution within areas of conservation value and assessment of the threat caused to natural habitats. Large number of spectral bands and high spatial resolution allows for identification of particular species. LiDAR (Light Detection and Ranging) data provide information about areas such as vegetation structure. Because the species differ in terms of features during the growing season, it is important to know when their spectral responses are unique in the background of the surrounding vegetation. The aim of the study was to identify two expansive grass species: Molinia caerulea and Calamagrostis epigejos in the Natura 2000 area in Poland depending on the period and dataset used. Field work was carried out during late spring, summer and early autumn, in parallel with remote sensing data acquisition. Airborne 1-m resolution HySpex images and LiDAR data were used. HySpex images were corrected geometrically and atmospherically before Minimum Noise Fraction (MNF) transformation and vegetation indices calculation. Based on a LiDAR point cloud generated Canopy Height Model, vegetation structure from discrete and full-waveform data and topographic indexes were generated. Classifications were performed using a Random Forest algorithm. The results show post-classification maps and their accuracies: Kappa value and F1 score being the harmonic mean of producer (PA) and user (UA) accuracy, calculated iteratively. Based on these accuracies and botanical knowledge, it was possible to assess the best identification date and dataset used for analysing both species. For M. caerulea the highest median Kappa was 0.85 (F1 = 0.89) in August and for C. epigejos 0.65 (F1 = 0.73) in September. For both species, adding discrete or full-waveform LiDAR data improved the results. We conclude that hyperspectral (HS) and LiDAR airborne data could be useful to identify grassland species encroaching into Natura 2000 habitats and for supporting their monitoring. © 2018 by the authors.
2016
Bzdęga, K.; Janiak, A.; Ksiązczyk, T.; Lewandowska, A.; Gancarek, M.; Sliwinska, E.; Tokarska-Guzik, B.
A survey of genetic variation and genome evolution within the invasive Fallopia complex Journal Article
In: PLoS ONE, vol. 11, no. 8, 2016, ISSN: 19326203, (12).
@article{2-s2.0-84991258049,
title = {A survey of genetic variation and genome evolution within the invasive Fallopia complex},
author = { K. Bzdęga and A. Janiak and T. Ksiązczyk and A. Lewandowska and M. Gancarek and E. Sliwinska and B. Tokarska-Guzik},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84991258049&doi=10.1371%2fjournal.pone.0161854&partnerID=40&md5=9b6fdbc28af38482cac72b2dab51becc},
doi = {10.1371/journal.pone.0161854},
issn = {19326203},
year = {2016},
date = {2016-01-01},
journal = {PLoS ONE},
volume = {11},
number = {8},
publisher = {Public Library of Science},
abstract = {The knotweed taxa Fallopia japonica, F. sachalinensis and their interspecific hybrid F. × bohemica are some of the most aggressive invaders in Europe and North America and they are serious threats to native biodiversity. At the same time, they constitute a unique model system for the creation of hybrids and studies of the initiation of evolutionary processes. In the presented study, we focused on (i) examining genetic diversity in selected populations of three Fallopia taxa in the invaded (Poland) and native ranges (Japan), (ii) establishing genome size and ploidy levels and (iii) identifying ribosomal DNA (rDNA)-bearing chromosomes in all of the taxa from the invaded range. We found that the genetic diversity within particular taxa was generally low regardless of their geographical origin. A higher level of clonality was observed for the Polish populations compared to the Japanese populations. Our study suggests that the co-occurrence of F. sachalinensis together with the other two taxa in the same stand may be the source of the higher genetic variation within the F. × bohemica hybrid. Some shift towards the contribution of F. japonica alleles was also observed for selected F. × bohemica individuals, which indicates the possibility of producing more advanced generations of F. × bohemica hybrids. All of the F. sachalinensis individuals were hexaploid (2n = 6x = 66; 2C = 6.01 pg), while those of F. japonica were mostly octoploid (2n = 8x = 88; 2C = 8.87 pg) and all of the F. × bohemica plants except one were hexaploid (2n = 6x = 66; 2C = 6.46 pg). Within the chromosome complement of F. japonica, F. sachalinensis and F. × bohemica, the physical mapping of the rDNA loci provided markers for 16, 13 and 10 chromosomes, respectively. In F. × bohemica, a loss of some of rDNA loci was observed, which indicates the occurrence of genome changes in the hybrid. © 2016 Bzdega et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.},
note = {12},
keywords = {},
pubstate = {published},
tppubtype = {article}
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The knotweed taxa Fallopia japonica, F. sachalinensis and their interspecific hybrid F. × bohemica are some of the most aggressive invaders in Europe and North America and they are serious threats to native biodiversity. At the same time, they constitute a unique model system for the creation of hybrids and studies of the initiation of evolutionary processes. In the presented study, we focused on (i) examining genetic diversity in selected populations of three Fallopia taxa in the invaded (Poland) and native ranges (Japan), (ii) establishing genome size and ploidy levels and (iii) identifying ribosomal DNA (rDNA)-bearing chromosomes in all of the taxa from the invaded range. We found that the genetic diversity within particular taxa was generally low regardless of their geographical origin. A higher level of clonality was observed for the Polish populations compared to the Japanese populations. Our study suggests that the co-occurrence of F. sachalinensis together with the other two taxa in the same stand may be the source of the higher genetic variation within the F. × bohemica hybrid. Some shift towards the contribution of F. japonica alleles was also observed for selected F. × bohemica individuals, which indicates the possibility of producing more advanced generations of F. × bohemica hybrids. All of the F. sachalinensis individuals were hexaploid (2n = 6x = 66; 2C = 6.01 pg), while those of F. japonica were mostly octoploid (2n = 8x = 88; 2C = 8.87 pg) and all of the F. × bohemica plants except one were hexaploid (2n = 6x = 66; 2C = 6.46 pg). Within the chromosome complement of F. japonica, F. sachalinensis and F. × bohemica, the physical mapping of the rDNA loci provided markers for 16, 13 and 10 chromosomes, respectively. In F. × bohemica, a loss of some of rDNA loci was observed, which indicates the occurrence of genome changes in the hybrid. © 2016 Bzdega et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
2015
Chmura, D.; Tokarska-Guzik, B.; Nowak, T.; Woźniak, G.; Bzdęga, K.; Koszela, K.; Gancarek, M.
The influence of invasive Fallopia taxa on resident plant species in two river valleys (southern Poland) Journal Article
In: Acta Societatis Botanicorum Poloniae, vol. 84, no. 1, pp. 23-33, 2015, ISSN: 00016977, (18).
@article{2-s2.0-84926451096,
title = {The influence of invasive Fallopia taxa on resident plant species in two river valleys (southern Poland)},
author = { D. Chmura and B. Tokarska-Guzik and T. Nowak and G. Woźniak and K. Bzdęga and K. Koszela and M. Gancarek},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84926451096&doi=10.5586%2fasbp.2015.008&partnerID=40&md5=6cf58643d127f6b3caad42501fee4951},
doi = {10.5586/asbp.2015.008},
issn = {00016977},
year = {2015},
date = {2015-01-01},
journal = {Acta Societatis Botanicorum Poloniae},
volume = {84},
number = {1},
pages = {23-33},
publisher = {Polskie Towarzystwo Botaniczne},
abstract = {Riparian zones in two rivers in southern Poland were studied in terms of species composition and soil parameters in patches dominated by three knotweed taxa (Fallopia japonica; F. sachalinensis and the hybrid F. ×bohemica). The main purpose was to detect any differences in species diversity, environmental conditions and in the impact of the three Fallopia spp. on resident species. Fieldwork was conducted in spring and summer in 30 invaded plots (in total 90 subplots). It was demonstrated that vegetation dominated by particular knotweed taxa differed in response to soil pH and ammonium, nitrate, and magnesium content. Fallopia spp. (living plants and necromass) had a stronger negative impact on the cover and species diversity of the resident species in summer in comparison with spring. Vegetation patches differed significantly in species composition in relation to the knotweed taxa present. These differences may be the consequence of the differentiated biotopic requirements of Fallopia taxa and the coexisting plants, or to the different impact of the knotweed taxa on the resident species. © The Author(s) 2015.},
note = {18},
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Riparian zones in two rivers in southern Poland were studied in terms of species composition and soil parameters in patches dominated by three knotweed taxa (Fallopia japonica; F. sachalinensis and the hybrid F. ×bohemica). The main purpose was to detect any differences in species diversity, environmental conditions and in the impact of the three Fallopia spp. on resident species. Fieldwork was conducted in spring and summer in 30 invaded plots (in total 90 subplots). It was demonstrated that vegetation dominated by particular knotweed taxa differed in response to soil pH and ammonium, nitrate, and magnesium content. Fallopia spp. (living plants and necromass) had a stronger negative impact on the cover and species diversity of the resident species in summer in comparison with spring. Vegetation patches differed significantly in species composition in relation to the knotweed taxa present. These differences may be the consequence of the differentiated biotopic requirements of Fallopia taxa and the coexisting plants, or to the different impact of the knotweed taxa on the resident species. © The Author(s) 2015.
2012
Bzdęga, K.; Janiak, A.; Tarłowska, S.; Kurowska, M. M.; Tokarska-Guzik, B.; Szarejko, I.
Unexpected genetic diversity of Fallopia japonica from Central Europe revealed after AFLP analysis Journal Article
In: Flora: Morphology, Distribution, Functional Ecology of Plants, vol. 207, no. 9, pp. 636-645, 2012, ISSN: 03672530, (18).
@article{2-s2.0-84865992818,
title = {Unexpected genetic diversity of Fallopia japonica from Central Europe revealed after AFLP analysis},
author = { K. Bzdęga and A. Janiak and S. Tarłowska and M.M. Kurowska and B. Tokarska-Guzik and I. Szarejko},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84865992818&doi=10.1016%2fj.flora.2012.05.002&partnerID=40&md5=6fae375b33865dfffbbe0280848f867c},
doi = {10.1016/j.flora.2012.05.002},
issn = {03672530},
year = {2012},
date = {2012-01-01},
journal = {Flora: Morphology, Distribution, Functional Ecology of Plants},
volume = {207},
number = {9},
pages = {636-645},
abstract = {Recently much attention has been paid to genetic aspects of invasive success in Japanese knotweed s.l. One hypothesis to explain the invasive spread of these species is a multiple introduction, which leads to a higher level of genetic diversity in the invaded range. Fallopia japonica is considered to be genetically uniform in Europe, introduced as a single female clone. However, there is some evidence suggesting that invasion history and dynamics differ between Western and Central-Eastern Europe. We used AFLP markers to characterize genetic diversity of three Fallopia taxa that occur in Poland: F. japonica, F. sachalinensis and their hybrid Fallopia×. bohemica, growing in so-called 'homogeneous' populations, consisting of one taxon and 'heterogeneous' populations, composed of the three taxa cohabiting together. No polymorphism, resp. an insignificantly low variability was observed in the 'homogeneous' populations. In the 'heterogeneous' stands polymorphism was detected within each taxa, with one exception that concerns individuals of F. sachalinensis from a riparian habitat. The highest level of polymorphism was found among individuals of F.×. bohemica. The most striking result of our study is the observation of polymorphism between individuals of F. japonica. The AFLP data also showed that F.×. bohemica is most diverse when occurring in a heterogeneous configuration with F. japonica and F. sachalinensis in the same habitat. Our results are the first evidence of genetic diversity in F. japonica populations in Central Europe and can implicate the possibility of its multiple introduction in this region or the existence of sexual reproduction of this species. © 2012 .},
note = {18},
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pubstate = {published},
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}
Recently much attention has been paid to genetic aspects of invasive success in Japanese knotweed s.l. One hypothesis to explain the invasive spread of these species is a multiple introduction, which leads to a higher level of genetic diversity in the invaded range. Fallopia japonica is considered to be genetically uniform in Europe, introduced as a single female clone. However, there is some evidence suggesting that invasion history and dynamics differ between Western and Central-Eastern Europe. We used AFLP markers to characterize genetic diversity of three Fallopia taxa that occur in Poland: F. japonica, F. sachalinensis and their hybrid Fallopia×. bohemica, growing in so-called 'homogeneous' populations, consisting of one taxon and 'heterogeneous' populations, composed of the three taxa cohabiting together. No polymorphism, resp. an insignificantly low variability was observed in the 'homogeneous' populations. In the 'heterogeneous' stands polymorphism was detected within each taxa, with one exception that concerns individuals of F. sachalinensis from a riparian habitat. The highest level of polymorphism was found among individuals of F.×. bohemica. The most striking result of our study is the observation of polymorphism between individuals of F. japonica. The AFLP data also showed that F.×. bohemica is most diverse when occurring in a heterogeneous configuration with F. japonica and F. sachalinensis in the same habitat. Our results are the first evidence of genetic diversity in F. japonica populations in Central Europe and can implicate the possibility of its multiple introduction in this region or the existence of sexual reproduction of this species. © 2012 .
2007
Bzdęga, K.; Rostański, A.; Pasierbiński, A.
In: Fragmenta Floristica et Geobotanica Polonica, vol. SUPPL. 9, pp. 197-208, 2007, ISSN: 1640629X.
@article{2-s2.0-38049037853,
title = {Data base of the collection of the Scientifical Herbarium of the University of Silesia (KTU) in the Polish Biodiversity Information Network (PolBin) [Baza danych kolekcji traw Zielnika Naukowego Uniwersytetu Ślaskiego - KTU w ramach Krajowej Sieci Informacji o Bioróżnorodności (KSIB)]},
author = { K. Bzdęga and A. Rostański and A. Pasierbiński},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-38049037853&partnerID=40&md5=1a621bd1a1c7026b56b30e6b2203c818},
issn = {1640629X},
year = {2007},
date = {2007-01-01},
journal = {Fragmenta Floristica et Geobotanica Polonica},
volume = {SUPPL. 9},
pages = {197-208},
abstract = {Scientific Herbarium of the University of Silesia is now more than 30 years old. Important part of the herbarium specimens is collection of grasses (ca. 7500 specimens), representing 87 genera and more than 250 species. Since 2005 Data Base of the collection of the Scientifical Herbarium of the University of Silesia (KTU) has been a part of the Polish Biodiversity Information Network (Po1BIN - KSIB) which collaborates with the Global Network: Global Biodiversity Information Facility - GBIF.},
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pubstate = {published},
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Scientific Herbarium of the University of Silesia is now more than 30 years old. Important part of the herbarium specimens is collection of grasses (ca. 7500 specimens), representing 87 genera and more than 250 species. Since 2005 Data Base of the collection of the Scientifical Herbarium of the University of Silesia (KTU) has been a part of the Polish Biodiversity Information Network (Po1BIN - KSIB) which collaborates with the Global Network: Global Biodiversity Information Facility - GBIF.