Arkadiusz Nowak

Ecology, Botany

Ph.D.
28.26

Publications

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    ABSTRACT: Based on numerical analyses of macromorphological characters (cluster analysis, principal coordinate analysis and principal component analysis), scanning electron microscopy observation of lemma and lamina micromorphology, as well as field observations, five taxa belonging to the Stipa turkestanica group have been recognized in the mountain area of Central Asia. They are S. turkestanica subsp. turkestanica, S. turkestanica subsp. trichoides, S. macroglossa subsp. macroglossa, S. macroglossa subsp. kazachstanica and S. kirghisorum. As a result of this study, we propose one new combination, S. macroglossa var. pubescens, and designate lectotypes for S. turkestanica subsp. trichoides and S. macroglossa var. pubescens, and an epitype for S. kirghisorum. Illustrations of micromorphological structures of the lemma, patterns of leaf hairiness and an identification key are provided. A taxonomic synopsis including information on nomenclatural types, synonyms, descriptions of the taxa, and, as supplementary information, a list of the specimens examined is also presented.
    Full-text · Article · Feb 2016 · Plant Systematics and Evolution
  • Arkadiusz Nowak · Sylwia Nowak · Marcin Nobis · Agnieszka Nobis
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    ABSTRACT: Eight syntaxa are validated with the previous names regarded as invalidly published according to the International Code of Phytosociological Nomenclature. The validation concerns syntaxa of rock plant communities of the Campanuletalia incanescentis order reported from the Pamir Alai mountains in Tajikistan. The majority of validated syntaxa represents association level, one is an alliance. All validations are conducted due to the invalidity of tables with typus relevés according to art. 1 of the Code: they were not distributed as printed matter. The validated syntaxa are as follows: Caricion koshewnikowii, Scutellarietum hissaricae, Scutellarietum schugnanicae, Scutellarietum zaprjagaevii, Scutellarietum baldshuanicae, Tylospermetum lignosae, Nanorrhinetum ramosissimi, Campanuletum albertii.
    No preview · Article · Jan 2016
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    ABSTRACT: The structure of the Stipa lipskyi (GenBank accession no. KT692644) plastid genome is similar to that of closely related Poaceae species: it has a total length of 137 755 bp, the base composition of the plastome is the following: A (30.7%), C (19.3%), G (19.4%) and T (30.5%). The S. lipskyi plastid genome contains 71 genes, excluding second IR region. A complete plastome sequence of S. lipskyi will help the development of primers for examining phylogeny and hybridization events in this taxonomically difficult genus.
    No preview · Article · Dec 2015 · Mitochondrial DNA
  • Arkadiusz Nowak · Sylwia Nowak · Marcin Nobis · Agnieszka Nobis
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    ABSTRACT: This paper presents the results of phytosociological research on scree vegetation of the Pamir Alai Mts. In total, 128 phytosociological relevés were made during field studies conducted in 2012–2014, applying the Braun-Blanquet method. Plant communities of mobile and fairly stabilised scree of colluvial cones, aprons and fans, inhabiting mainly the high montane and alpine zone in several ranges (e.g.the Zeravshan, Hissar, Hazratishoh, Darvaz, Rushan and Vanch Mts) are herein described. A hierarchical syntaxonomic synopsis of scree communities at montane and alpine elevations in the Pamir Alai Mts is provided. The collected vegetation samples represent the majority of the variations among the phytocoenoses of gravel, pebble, cobble and rock block slides and scree in the high montane and alpine zones. As a result of field studies and numerical analyses, nine associations – Anaphallidetum zeravschanicae, Angelicetum ternatae, Feruletum foetidissimae, Feruletum koso-poljanskyi, Feruletum sumbuli, Feruletum tenuisectae, Hedysaretum flavescentis, Stellarietum turkestanicae, and Tetrataenietum olgae – have been distinguished, as well as one subassociation, Feruletum foetidissimae mediasietosum macrophyllae. Because of their floristic distinctiveness, all of these communities have been assigned to a new alliance (Ferulo foetidissimae-Vicion kokanicae) and a provisional order (Sileno brahuicaeScutellarietalia intermediae) within the central Asian class of scree vegetation Artemisio santolinifoliae-Berberidetea sibiricae. The main factors determining species composition of the studied associations are the scree mobility, rock particle size, elevation above sea level and slope inclination. Rupicolous habitats in Tajikistan, probably because of their high degree of separateness and marginal position within the Irano-Turanian province, act as a refuge for many narrowly distributed plant taxa and present remarkable variability in terms of species composition and habitat requirements. A synopsis of the scree plant communities of the Pamir Alai is proposed.
    No preview · Article · Dec 2015 · Phytocoenologia
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    ABSTRACT: The paper presents new records for 20 vascular plant species from 13 Eurasian countries. Four taxa (Calamagrostis sichuanensis, Klasea dissecta, Ptilagrostis milleri and Stipa klimesii) are reported from China, four (Aconogonon valerii, Carex siderosticta, Poa tanfiljewii and Potamogeton × subobtusus) from Russia, three (Amorpha fruticosa, Carduus acanthoides and Plantago minuta) from Tajikistan, two (Achillea sergievskiana and Delphinium barlykense) from Kazakhstan, one (Calamagrostis effusiflora) from Bhutan and India, one (Campanula wolgensis) from Mongolia, one (Orobanche coerulescens) from Georgia, two (Dysphania geoffreyi and Ptilagrostis milleri) from Nepal, one (Stipa × alaica) from Afghanistan, one (Stipa × manrakica) from Kyrgyzstan, one (Ranunculus × gluckii) from Poland and one (Sporobolus cryptandrus) from Italy. Four of the taxa presented (Amorpha fruticosa, Carduus acanthoides, Carex siderosticta and Sporolobus cryptandrus) are regarded as alien to the studied areas, whereas the remaining 16 are native elements to the flora of the countries. For each species synonyms, general distribution, habitat preferences, taxonomy with remarks on recognition and differentiation of the species from the most similar taxa occurring in a given country, as well as a list of recorded localities (often far from the previously known areas) are presented. Based on the spikelet morphology, we have proposed in Ptilagrostis a new section Barkworthia M. Nobis, A. Nobis & A. Nowak, which comprises two species Ptilagrostis yadongensis and Ptilagrostris milleri, with distinctly unequal glumes, lemmas and paleas.
    Full-text · Article · Dec 2015 · Acta botanica Gallica: bulletin de la Société botanique de France
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    Marcin Piątek · Matthias Lutz · Marcin Nobis · Arkadiusz Nowak
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    ABSTRACT: A novel Anthracoidea species, A. pamiroalaica on the endemic sedge Carex koshewnikowii, is described and illustrated from the Pamir Alai Mts in Tajikistan (Central Asia). The new species is phenotypically nearly identical with Anthracoidea sempervirentis, but clearly divergent genetically. Phylogenetic analyses based on LSU sequences showed affinity of Anthracoidea pamiroalaica to A. baldensis, A. rupestris, A. capillaris, and A. vankyi infecting host sedges in different Carex sections (Baldenses, Rupestres, Chlorostachyae, and Phaestoglochin, respectively), but not to A. misandrae, and A. sempervirentis, two sequenced species parasitic on host species from the section Aulocystis. This phylogenetic placement is briefly discussed in the context of Anthracoidea evolution.
    Full-text · Article · Nov 2015 · Mycological Progress
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    ABSTRACT: The study presents results of habitat creation and riparian vegetation recovery in artificial oxbow lakes in urbanized area within the large river valley. The investigation of open water, rush and wet meadows flora and vegetation in three ponds located in the city centre of Opole was conducted in years 2001–2013. Oxbow lakes were constructed as a compensation measure and no vegetation was transplanted into the ponds on purpose. 13-years observation showed that (1) the red-listed species are able to spontaneous reoccurrence after habitat restoration, but they can thrive only in first years of oxbow lakes recolonisation process, (2) there are some restoration constraints, especially in relation to Phragmites australis and Nuphar lutea expansion, but alien species invasions were insignificant and (3) the species number and vegetation cover was constantly increasing during the recolonisation process in recreated oxbow lakes. The dynamic of vegetation was considerable, especially in first 6 years of experiment when the significant increase in diversity and richness of native plant species was observed. After that time, the increasing expansion of P. australis and N. lutea was noted causing the decline of several species and vegetation types. So, restoring just the environmental conditions may be sufficient for a limited period of time only. Strong disturbances, much intense that moderate inundations, imitating disastrous flooding within the valley each 10–13 years are need to maintain the ecological niches for river corridor and riparian species.
    Full-text · Article · Oct 2015 · Ecological Engineering
  • Arkadiusz Nowak · Sylwia Nowak · Marcin Nobis · Agnieszka Nobis
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    ABSTRACT: Using the literature data and field research conducted in 2009-2013 the distribution patterns, habitat conditions, phytogeographical characterisation and endangerment of weeds occurring in cereal crops in Tajikistan were analysed. We found out that Tajik weed flora of cereal crops counts 686 taxa. The most species rich families include Asteraceae, Poaceae and Fabaceae. The highest number of cereal weeds were noted in large river valleys of Syr-Daria, Amu-Daria and their tributaries in south-western and northern Tajikistan. This subregions have the warmest climate conditions and extensive arable lands. The greatest weed species richness was observed in submontane and montane elevations between approx. 700 and 1,900 m a.s.l. Cereal weeds occur frequently outside segetal communities in Tajikistan. They were noted usually in screes, wastelands, xerothermophilous grasslands, river gravel beds and in steppes habitats. The assessment of threat status reveals that ca. 33% of total cereal weed flora in Tajikistan are disappearing or occur very rarely. According to the chorological data we find that in the cereals of Tajikistan, 35 endemic and 14 subendemic species occur. The most numerous chorological elements of threatened weed flora of Tajikistan are Irano-Turanian (55%), pluriregional (16%), cosmopolitan (14,5%), Mediterranean (9%) and Eurosiberian (5%) species. Further research is suggested to explore the distribution patterns of all weed species in Tajikistan as it should be useful for economy and effectiveness of crop production as well as conservation of most valuable species.
    No preview · Article · Aug 2015 · Pakistan Journal of Botany
  • Magdalena Maślak · Agata Smieja · Arkadiusz Nowak · Paweł Kojs
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    ABSTRACT: In 2012 the Katowice International Airport has started the reconstruction and enlargement of landing facilities within the airport areas in Pyrzowice. After a long discussion how to effectively protect the valuable habitats of the airport area, the Provincial Conservation Authority has decide, that the most important vegetation plots have to be translocated and managed according to inter situ conservation measures. The Silesian Botanical Garden has been engaged as a main responsible for scientific as well as technical issues. After a thorough inventory in 2011-2012 the translocation was consequently undertaken in 2013. Altogether 1.3 ha of wet meadow (Molinion alliance), 0.2 ha of mires and 0.2 ha of dry heathlands was successfully translocated into the artificial pools in the Radzionków Botanical Garden which is a branch of Silesian Botanical Garden in Mikołów founded in 2009. These translocated plots are the core of the habitat collections of the Silesian Botanical Garden. Immediately the monitoring programme was established aiming at analyzing the effects of this conservation measure in relation to plant communities and target species. After one year of observation we can assume that the translocation was successful both for habitats and species. All populations of target species (Gentiana pneumonanthe, Chimaphila umbellata, Carex davalliana, Gladiolus imbricatus Dactylorhiza majalis, Dactylorhiza maculata, Epipactis palustris, Equisetum variegatum, Iris sibirica, Ledum palustre, Drepanocladus lycopodioides, Botrychium lunaria, Ophioglossum vulgare) are still present within phytocoenoses and some of them have increased in numbers after translocation. Only Lycopodium clavatum population declines considerably, probably according to physical disturbances during translocation. The main diagnostic species are still in good state, so the target syntaxa (Molinietum medioeuropaeum, Calluno-Ulicetalia and Caricion davallianae) are still easy to be recognized and thrive in garden pools. The crucial problem for the translocated vegetation plots seems to be a colonisation of the ecologically alien species (eg. Cirsium arvense, Apera spica-venti or Calamagrostis epigejos) which came over from neighbouring lands. Key words: translocations, conservation, ex situ, endangered plants, Poland
    No preview · Conference Paper · Jul 2015
  • Arkadiusz Nowak · Sylwia Nowak · Marcin Nobis · Agnieszka Nobis
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    ABSTRACT: The results of phytosociological research conducted on the fern vegetation of rock crevices and clefts of the Pamir-Alai Mountains in Tajikistan are presented. During field surveys done in 2010-2013, 78 phytosociological relevés were sampled. Plant species were recorded according to the Braun-Blanquet cover-abundance scale. A synopsis of the fern communities of the montane and high altitude zones in Tajikistan is proposed. In the examined vegetation plots, species of 9 ferns, 58 angiosperms and 13 mosses were recorded. The most frequent ferns were: Cystopteris fragilis, Cheilanthes persica, Asplenium ruta-muraria, Asplenium ceterach, Adiantum capillus-veneris and Cryptogramma stelleri. Six plant associations could be distinguished: Cheilanthetum persicae, Cryptogrammetum stelleri, Soncho transcaspici-Adiantetum capilli-veneris, Asplenio-Ceterachetum officinarum, Asplenio-Cystopteridetum fragilis, and Asplenietum trichomano-rutae-murariae. The first three associations are described for the first time. The main factors determining the species composition of classified associations are elevation range, microhabitat humidity and moss cover. A minor role is played by the geographic distribution range and rock type.
    No preview · Article · Jul 2015 · American Fern Journal
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    Arkadiusz Nowak · Sylwia Nowak · Marcin Nobis
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    ABSTRACT: The study presents the results of geobotanical investigations conducted in rice fields in southern Thailand in 2013. It is focussed on the classification of plant communities poorly investigated from a geobotanical standpoint. Altogether 125 phytosociological relevés were collected, using the Braun-Blanquet method. We noted more than 100 species in the vegetation plots, including many rare ones. We classified the vegetation into seven communities, including six associations. Five associations are proposed as new: Nymphaeetum nouchali, Fimbristylido miliaceae-Sphenocleetum zeylanicae, Ischaemo rugosi-Cyperetum pulcherrimi, Pentapeto phoeniceae-Aeschynomenetum indicae and Marsileetum minutae. The distinctiveness in species composition compared to other Oryzetea sativae phytocoenoses justifies a new alliance: Ludwigion hyssopifolio-octovalvidis. The main discrimination factors for the data set were water depth and species richness. The study reveals that rice paddy fields are inhabited by a variety of littoral and aquatic vegetation types. In particular, non-intensively cultivated rice fields hold a diverse hydrophilous flora, especially taxa typical for mud or littoral habitats.
    Full-text · Article · Jul 2015 · Phytocoenologia
  • A Nowak · S Nowak · M Nobis · A Nobis
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    ABSTRACT: The influence of broad-scale environmental factors on the species composition of segetal weed communities in Tajikistan was investigated. The research was conducted throughout the country, analysing plots of root crops as well as cereals from all phytogeographical regions of Tajikistan, with the exception of the eastern Pamir. The study was based on 440 phytosociological relevées sampled between 2009 and 2013 and analysed using direct and indirect ordinations. A set of environmental variables was obtained for each plot: altitude, mean annual precipitation, mean annual temperature, pH, crop type, longitude, latitude and date of sampling (seasonality). Crop type was the major factor determining species composition, which was related to the different farming practices in roots and cereals. Major changes in weed species composition were also driven by altitude and correlated temperatures. The seasonality of weed communities also had a considerable effect on weed community structure. Samples from spring differed significantly from samples from summer and late summer. Only longitude and soil pH were found to be insignificant. The complete set of environmental variables used in a canonical correspondence analysis explained 8.3% of the species variation in sampled plots. The study showed that despite the very diverse climatic conditions and low intensity of agriculture in Tajikistan, agrocoenoses respond mainly to the type of cultivation practised in arable land.
    No preview · Article · Jun 2015 · Weed Research
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    Full-text · Article · Jun 2015 · Journal of Bryology
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    Full-text · Article · Apr 2015 · Journal of Bryology
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    ABSTRACT: The paper presents new records for 18 vascular plant species from six Eurasian countries. Three taxa (Lepidium densiflorum, Stipa czerepanovii, Xanthium albinum) are reported from Kazakhstan, one (Ranunculus schmakovii) from Mongolia, three (Dianthus campestris, Ranunculus kauffmannii, Viola suavis) from Poland, five (Eragrostis amurensis, Linum catharticum, Ludwigia peploides subsp. stipulacea, Pyrethrum mikeschinii, Solidago canadensis) from Tajikistan, five (Clinopodium menthifolium, Juncus effusus, Mollugo cerviana, Poa sphondylodes, Vulpia myuros) from Russia, and one (Orobanche alba subsp. xanthostigma) from Georgia. Ten of the taxa presented (Clinopodium menthifolium, Dianthus campestris, Eragrostis amurensis, Juncus effusus, Lepidium densiflorum, Mollugo cerviana, Solidago canadensis, Viola suavis, Vulpia myuros and Xanthium albinum) are regarded as alien to the studied areas, whereas the remaining eight are native elements to the flora of the countries. For each species, synonyms, general distribution, habitat preferences, taxonomy with remarks on recognition and differentiation of the species from the most similar occurring in a given country, as well as a list of localities recorded (often far from the previously known areas), are presented.
    Full-text · Article · Apr 2015 · Acta botanica Gallica: bulletin de la Société botanique de France
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    ABSTRACT: The paper presents new records for 18 vascular plant species from six Eurasian countries. Three taxa (Lepidium densiflorum, Stipa czerepanovii, Xanthium albinum) are reported from Kazakhstan, one (Ranunculus schmakovii) from Mongolia, three (Dianthus campestris, Ranunculus kauffmannii, Viola suavis) from Poland, five (Eragrostis amurensis, Linum catharticum, Ludwigia peploides subsp. stipulacea, Pyrethrum mikeschinii, Solidago canadensis) from Tajikistan, five (Clinopodium menthifolium, Juncus effusus, Mollugo cerviana, Poa sphondylodes, Vulpia myuros) from Russia, and one (Orobanche alba subsp. xanthostigma) from Georgia. Ten of the taxa presented (Clinopodium menthifolium, Dianthus campestris, Eragrostis amurensis, Juncus effusus, Lepidium densiflorum, Mollugo cerviana, Solidago canadensis, Viola suavis, Vulpia myuros and Xanthium albinum) are regarded as alien to the studied areas, whereas the remaining eight are native elements to the flora of the countries. For each species, synonyms, general distribution, habitat preferences, taxonomy with remarks on recognition and differentiation of the species from the most similar occurring in a given country, as well as a list of localities recorded (often far from the previously known areas), are presented.
    Full-text · Article · Apr 2015 · Acta botanica Gallica: bulletin de la Société botanique de France
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    Full-text · Article · Mar 2015 · Journal of Bryology
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    Full-text · Article · Mar 2015 · Journal of Bryology
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    Marcin Nobis · Arkadiusz Nowak · Polina D. Gudkova
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    ABSTRACT: Stipa section Regelia comprises three species occurring in mountainous areas of Central Asia. One of them, S. smithii, was described by Martinovský in 1970, but the taxon has been overlooked in later taxonomical studies. The species was described with two varieties, var. smithii and var. macrocarpa. As a result of our taxonomical studies, we find the typical variety of the taxon to be conspecific with Stipa aliena, and propose that the second one be recognized as Stipa aliena var. macrocarpa comb. nov. Remarks on species belonging to section Regelia and micromorphological patterns of their lemma morphologies are discussed. A key to species close to S. aliena is provided.
    Full-text · Article · Jan 2015 · Phytotaxa
  • Arkadiusz Nowak · Sylwia Nowak · Marcin Nobis
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    ABSTRACT: Rice field weed communities occurring in central Nepal are presented in this study. The research was focussed on the classification of segetal plant communities occurring in paddy fields, which had been poorly investigated from a geobotanical standpoint. In all, 108 phytosociological relevés were sampled, using the Braun-Blanquet method. The analyses classified the vegetation into 9 communities, including 7 associations and one subassociation. Four new plant associations and one new subassociation were proposed: Elatinetum triandro-ambiguae, Mazo pumili-Lindernietum ciliatae, Mazo pumili-Lindernietum ciliatae caesulietosum axillaris, Rotaletum rotundifoliae and Ammanietum pygmeae. Due to species composition and habitat preferences all phytocoenoses were included into the Oryzetea sativae class and Ludwigion hyssopifolio-octovalvis alliance. As in other rice field phytocoenoses, the main discrimination factors for the plots are depth of water, soil trophy and species richness. The altitudinal distribution also has a significant influence and separates the Rotaletum rotundifoliae and Elatinetum triandro-ambiguae associations. The study shows that anthropogenic rice fields can harbour relatively rich rush and water vegetation. More than 80 species were noted in the vegetation plots. Several of them are considered to be extremely rare and have been recorded on the world Red List.
    No preview · Article · Jan 2015 · Acta Botanica Croatica

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