Publications

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    Journal of Bryology 11/2014; 36(4):306-324. · 1.35 Impact Factor
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    ABSTRACT: Road traffic emits a cocktail of pollutants that can influence the vegetation and plant diversity in neighboring areas. However, the recovery potential of bryophytes after traffic abandonment is still little explored. In addition, the effects of the main pollutants of road verges, such as metals and salinity, on moss flora need to be investigated. In our study, we compared the moss richness and diversity in two closely related veteran tree allees of high conservation importance. The allees in Gryżów and Lubrza, Poland, were chosen because of their similarity in age, geographical location, type of surrounding areas, and tree species. The only difference was that the trees in Gryżów had not been exposed to direct road pollution for almost 30 years. The moss richness and diversity differed significantly between the sites. Altogether, 20 moss species were recorded on 229 trees, 17 species in Gryżów (abandoned road), and 13 in Lubrza (busy road). We found considerable differences between moss cover on the road-facing and opposite sides of tree trunks. In Lubrza, mosses on the road-facing side were very scarce. The moss cover in Gryżów was highly balanced between trunk sides as well as among trunk heights. Typical epiphytic species such as Bryum moravicum, Dicranoweisia cirrata, Leskea polycarpa, and Orthodicranum tauricum preferred the Gryżów tree stands, where they were present in numbers almost twice as high as that at Lubrza. The study shows that constructing a bypass road could be an effective conservation measure for veteran tree protection with their epiphytic moss flora.
    Environmental Monitoring and Assessment 09/2014; · 1.68 Impact Factor
  • Plant Biosystems 09/2014; · 1.91 Impact Factor
  • A Nowak, S Nowak, M Nobis, A Nobis
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    ABSTRACT: Intensification of agriculture has significantly diminished the populations of segetal weeds worldwide in recent decades. Remarkable changes to the entire flora and vegetation of man-made habitats are being observed in agroecosystems. The present study analyses, for the first time, the threat status of segetal weeds in Tajikistan. A group of 871 weed species were evaluated against IUCN criteria. The assessment of threat status revealed that 214 weed taxa have to be regarded as threatened in Tajikistan, including 18 endemic and four subendemic plants. Five species have been classified as extinct, 27 as critically endangered, 27 as endangered, 39 as vulnerable, 34 as near threatened and 44 as in the ‘least concern’ category. For 38 species, the threat level was not possible, due to lack of data. The most threatened group of taxa is related to rice paddy fields. Numerous losses and disappearances were also observed in cereal communities. Percentages of threatened species in different chorological groups amounted to 58% in the Irano–Turanian, 17% in the Pluriregional, 11% in the Mediterranean, 9.5% in the Cosmopolitan and 4% in the Euro–Siberian species group. Assessment of the threatened status of the rich segetal flora of Tajikistan affords the opportunity to raise awareness of the value of this group of species in the country and may be useful in the conservation management of arable habitats. The results show that even though agriculture in Tajikistan is still based on traditional management and manual work, weed control causes a serious threat to its segetal flora.
    Weed Research 09/2014; · 2.05 Impact Factor
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    ABSTRACT: Stipa klimesii sp. nov. from the Western Himalayas (India: Ladakh) and its variety S. klimesii var. pubescens var. nov. are described. The new species is similar to S. roborowskyi but differs by its longer anthecium, longer ligules of vegetative shoots, longer hairs on seta and shorter awns. Stipa klimesii is also similar to S. purpurea, but differs by longer ligules of vegetative shoots, shorter awns, slightly shorter hairs on seta and by the character of the panicle, which is compressed and with straight branches in S. klimesii vs. lax and with flexuous branches in S. purpurea. Epidermal patterns of the lemma in S. klimesii and both above-mentioned species, were examined by scanning electron microscopy. Images of macromorphological and micromorphological structures are provided.
    Phytotaxa 07/2014; 174(3):173-180. · 1.38 Impact Factor
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    ABSTRACT: Dionysia involucrata Zaprjag. (Primulaceae) is known as critically endangered endemic species of Hissar Mountains in Tajikistan. It is reported from few localities mainly in Varzob River valley and its tributaries. The species inhabits steep or overhanging faces of granite rocks in narrow river gorges. During the research all known populations of D. involucrata were examined in respect of the habitat conditions and species composition of vegetation plots. We analyzed the population extent of the species in its range in Tajikistan and the main threats in order to assess its conservation status. The detrended correspondence analysis was performed on a matrix of 65 relevés and 49 species (vascular plants and mosses), to classify the phytocoenosis with domination of D. involucrata according to their floristic composition in relation to other petrophytic vegetation units. Using our field data regarding present extent of occurrence and area of occupancy we conclude that the threat category of D. involucrata should be reassessed from critically endangered to endangered. The species shows decline tendency in extent of occurrence, area of occupancy as well as in number of locations. The vegetation plots with domination of D. involucrata have relatively high level of separateness due to different species composition. We define the new association – Dionysietum involucratae – representing chasmophytic vegetation of submontane and montane zone in Middle Asia (ca. 1000–1600 m a.s.l.). The plots of Dionysietum involucratae were found mainly on granite rocks, on very steep or overhanging faces, on southwestern or southern exposition. The association is rather poor in species with inconsiderable contribution of mosses. Despite the diagnostic species, Campanula incanescens, Carex koshewnikowii and Scutellaria hissarica were the most abundant and frequent taxa within the researched patches of vegetation.
    Acta Societatis Botanicorum Poloniae 07/2014; 83(2):123-135. · 1.20 Impact Factor
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    Journal of Bryology 06/2014; 36(2):134-135. · 1.35 Impact Factor
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    ABSTRACT: alpestris (Thed.) Schimp. Contributor: L. Thouvenot Andorra: Encamp, Ensagents, 42u319070N, 1u389410E, 2520 m a.s.l., on the top of granitic rock in alpine meadow, 17 July 2006, leg. L. Thouvenot 3086 (BCB 58238). According to Casas (2005) this species was pre-viously unrecorded in Andorra (Eastern Pyrenees) although it is known in the neighbouring countries of France (Cerdagne) (Aicardi, 2007) and Spain (Pallars Sobirà, Baixa Cerdanya) (Cros & Sérgio, 2007). 2. Andreaea australis Mitt. Contributor: H. Bednarek-Ochyra South Georgia: (1) Barff Peninsula, Lö nnberg Valley, ca 100 m (5300 ft) a.s.l., north-east facing rock ledge, GR 147112, 2 February 1964, leg. R. E. Longton 390 (KRAM); (2) approximately 1 mile east of The Crutch, ca 85 m (5250 ft) a.s.l., crevices of north facing rocks above scree, GR 132135, 14 December 1967, leg. S. W. Greene CG 550 (KRAM). Andreaea Hedw. is well represented on South Georgia, and Greene (1968) recognised nine species on this subantarctic island. As a result of subsequent studies, three more species have been added to the island's bryoflora, A. obovata Thed. (Ochyra et al., 2002), A. mutabilis Hook.f. & Wilson (Blockeel et al., 2003) and A. nitida Hook.f. & Wilson (Ellis et al., 2011b). Murray (2006) indicated that one more species, A. australis Mitt., occurs on South Georgia but did not cite any specimens. This species was indeed collected several times on that island and here two specimens are cited to substantiate this. Prior to this discovery A. australis was considered to be an
    05/2014;
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    ABSTRACT: The paper presents new records for 20 vascular plant species from eight Asian and two European countries. Five taxa (Artemisia campestris, Artemisia tanacetifolia, Delphinium sajanense, Diarthron vasiculosum var. undulatum, Epilobium adenocaulon) are reported from Kazakhstan, four (Deyeuxia yanyuanensis, Poa arnoldii, Stipa gracilis, Stipa macroglossa subsp. kazachstanica) from China, three (Nepeta pamirensis, Silene bucharica, Scrophularia pamiro-alaica) from Uzbekistan, two (Epilobium nervosum, Stellaria zolotukhinii) from Mongolia, two (Oenothera deflexa, Scirpus georgianus) from Poland, one (Coronopus didymus) from Tajikistan, one (Orobanche rumseiana) from Italy, one (Stipa macroglossa subsp. kazachstanica) from Kyrgyzstan, one (Poa polozhiae) from Russia, and one (Agrostis rupestris) from Azerbaijan. All of these taxa are new to the floras of listed Asian and European countries or its regions (as it is in the case of China or Russia). Four of the presented taxa (Coronopus didymus, Epilobium adenocaulon, Oenothera deflexa and Scirpus georgianus) are regarded as alien to the studied areas, whereas the other 16 are new 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. In the case of Orobanche rumseiana, a new variety O. rumseiana var. sarda R. Piwowarczyk and A. Pujadas is described and illustrated.
    Acta botanica Gallica: bulletin de la Société botanique de France 04/2014; 161(2). · 0.31 Impact Factor
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    ABSTRACT: The paper presents results of phytosociological researches on rock faces vegetation of Pamir Alai Mountains. In total, 182 phytosociological relevés were made during the field studies conducted in 2006–2012, applaying the Braun-Blanquet method. Plant communities of calcareous firm rock faces and small fissures, inhabiting mainly the alpine and subnival zone in several ranges (e.g. Zeravshan Mts, Hissar Mts, Hazratishoh Mts, Darvaz Mts, Rushan Mts and Vanch Mts) are herein described for the first time. A hierarchical syntaxonomic synopsis of the rock communities of the Pamir Alai is provided. The collected vegetation samples represent the majority of the variability among the phytocoenoses of small crevices in limestone massifs in alpine and subnival zone. As a result of field research and numerical analyses, 14 associations have been distinguished: Sergietum regelii, Scutellarietum megalodontae, Scutellarietum rubromaculatae, Scutellarietum orbicularis, Campanuletum lehmannianae, Violetum majchurensis, Achoriphragmetum darvazici, Achoriphragmetum turkestanici, Asperuletum fedtschenkoi, Andrachnetum fedtschenkoi, Eritrichietum turkestanici, Minuartio litwinowii-Phaeonychietum surculosi, Silenetum kuhistanicae, Silenetum samarcandensis. Main factors determining the species composition of the classified associations seem to be the crevice type, the elevation above sea level and the availability of soil. Rocky habitats in Tajikistan, probably because of their high separateness and marginal position within the Irano-Turanian province, act as a refuge for many narrowly distributed plant taxa.
    Phytocoenologia 02/2014; 44(1-2):81-101. · 1.00 Impact Factor
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    ABSTRACT: Abstract: The paper presents new records for 10 vascular plant species from three Asian and four European countries. Of this number, three species (Panicum capillare, Stipa macroglossa, Tribulus longipetalus) are reported from Tajikistan, two (Calamagrostis emodensis, Calamagrostis lahulensis) from Myanmar, two (Euphorbia taurinensis, Origanum vulgare var. megastachyum) from Poland, one (Sagina apetala) from Uzbekistan, one (Orobanche ritro) from Ukraine and Russia, and one (Leontodon saxatilis) from the Czech Republic. Eight of these taxa are new to the flora of different Asian and European countries; and two, very rare but recently spreading species, namely Leontodon saxatilis and Euphorbia taurinensis, were reported from the Czech Republic and Poland, respectively. Four of the taxa presented (Euphorbia taurinensis, Panicum capillare, Sagina apetala and Tribulus longipetalus) should be regarded as alien to the studied areas, intensively spreading or even invasive, whereas the other six are native elements given for the first time from the countries. In each of the species, synonyms, the general distribution, habitat preferences and habitats occupied in the particular country, taxonomy with remarks on recognition and differentiating the species from the most similar occurring in particular country as well as a list of localities of examined species occurring in a given country, often far from the previously known areas, were presented. In the case of Stipa macroglossa a lectotype for the species was designated in the present paper. Illustrations for Stipa macroglossa and Orobanche ritro were also provided.
    Acta botanica Gallica: bulletin de la Société botanique de France 01/2014; 161(1):81-89. · 0.31 Impact Factor
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    Nowak A., Nowak S., Nobis M.
    Pakistan Journal of Botany 01/2014; 46(1):27-64. · 1.21 Impact Factor
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    Marcin Nobis, Arkadiusz Nowak, Agnieszka Nobis
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    ABSTRACT: Stipa zeravshanica M. Nobis sp. nov. from the western Pamir Alai Mts (Tajikistan) is described and illustrated. Morphologically, the new species is similar to S. gracilis, but it is easily distinguishable by pilose (vs. glabrous) lower part of the awn, and generally somewhat longer ligules of the vegetative shoots. Epidermal patterns of the lemma in S. zeravshanica and three other closely related taxa, namely S. gracilis, S. himalaica and S. orientalis, were examined by means of SEM. The main macro-morphological and micro-morphological characteristics differentiating all mentioned species are presented. Additionally, a lectotype for S. gracilis is designated. Based on phytosociological relevés prepared during field investigation in the western Pamir Alai Mts, a new plant association Asperulo albiflorae–Stipetum zeravshanicae, occurring on shelves and rocky crevices is also described.
    Nordic Journal of Botany 12/2013; 31(6). · 0.60 Impact Factor
  • Sylwia Nowak, Arkadiusz Sebastian Nowak
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    ABSTRACT: The paper presents the results of investigations of weed vegetation conducted on root crops in Tajikistan (Middle Asia), one of the world cradles of weed flora. The main research was conducted in the Zeravshanian, southern Tajikistan and Hissar-Darvasian geobotanical regions in 2011. The study was based on 107 phytosociological relevés obtained in various geobotanical regions of the country. The collected material probably presents the majority of variations among the weed communities of root cultivations in the Middle Asia. As a result of numerical analyses, 7 associations were distinguished: Convolvulo arvensis-Cyperetum rotundi, Daturo stramonii-Hibiscetum trioni, Setario pumilae-Sorghetum halepensi, Galinsogo-Setarietum, Equiseto arvensi-Xanthietum italici, Portulacetum oleracei and Brassico campestris-Lamietum amplexicauli. The last mentioned is new to science. Additionally, one subassociation has been proposed (Convolvulo arvensis-Cyperetum rotundi kochietosum scopariae). The main discrimination factor for the data set is the floristic structure of the associations. The study shows that root-crop plantations with segetal vegetation may harbor a relatively rich flora. Almost 200 species were found in vegetation plots, including some, which are rare and have not been recorded until now in this part of Middle Asia. However, most of the recorded species are widespread weeds typical for the Mediterranean and Irano-Turanian geobotanical provinces.
    Acta Societatis Botanicorum Poloniae 06/2013; 82(2):135-146. · 1.20 Impact Factor
  • Nowak S., Nowak A, Nobis M.
    Phytocoenologia 01/2013; 43:101-126. · 1.00 Impact Factor
  • Nowak S., Nowak A., Nobis M., Nobis A.
    Phytocoenologia 01/2013; 43:225-243. · 1.00 Impact Factor
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    Arkadiusz Nowak, Marcin Nobis
    Acta Societatis Botanicorum Poloniae 01/2013; 82(1):47-55. · 1.20 Impact Factor
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    ABSTRACT: The paper presents the results of phytosociological research conducted on the vegetation of rock clefts and ledges in the Pamir-Alai Mountains (Tajikistan, Middle Asia). During the field studies, done in 2010–2012, 101 phytosociological relevés were taken. Plant species were recorded according to the Braun-Blanquet cover-abundance scale. Communities of calcareous rock clefts and ledges with small soil amounts from several ranges (Zeravshan Mts, Hissar Mts, Hazratishokh Mts, Darvaz Mts, Rushan Mts and Vanch Mts), inhabiting mainly the alpine and subnival zone, have been described. A synopsis of the rock communities of the Pamir-Alai is proposed. In the examined vegetation plots 77 vascular plant and 6 moss species were noted. The most frequent were: Achoriphragma pinnatifidum, Artemisia rutifolia, Asperula albiflora, Campanula incanescens, C. lehmanniana, Parietaria judaica, Pentanema albertoregelia, Poa relaxa and Stipa zeravshanica among vascular plants and Brachythecium albicans and Bryum caespiticum among mosses. Most of them are narrow endemics of Tajikistan or Middle Asia. The collected material presents most of the variability among the phytocoenoses of large crevices and rock ledges in limestone massifs in the alpine and subnival zones. As a result of field research and numerical analyses, 7 associations have been distinguished: Achoriphragmetum pinnatifidi, Asperulo albiflorae-Stipetum zeravshanicae, Inuletum glaucae, Paraquilegietum anemonoidis, Pentanemetum albertoregeliae, Rhinactinidietum popovii and Saussureaetum ovatae. The distinctiveness of habitat and species composition of Middle Asiatic rock communities makes it necessary to distinguish a new suballiance, Pentanemenion albertoregeliae, within the Asperulo albiflorae-Poion relaxae alliance. The main factors determining the species composition of classified associations seem to be the elevation above sea level and exposition. Alpine rock communities are one of the most unique and interesting plant formations in the moutainous areas of Pamir-Alai. Despite not being species-rich they often harbour many specialists adapted to harsh and extreme environments, especially in areas of Mediterranean-like climate.
    Central European Journal of Biology 01/2013; · 0.82 Impact Factor
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    ABSTRACT: The present study is focused on Potamogeton polygonifolius – the species considered to be endangered in Germany, the Czech Republic, Poland and Switzerland. Field studies were carried out in Lower Silesia and Lusatia in southwestern Poland in order to verify the present state of the marginal populations of P. polygonifolius, to determine the habitat preferences of the species in the study area, to compare the ecological data between marginal and central populations and finally to recognize the factors limiting the easternmost limit of the P. polygonifolius. In total, 18 populations were examined, and 11 relevés were collected. The relevés gathered were compared with 95 relevés made in northwestern Germany, and with 10 relevés collected in German part of Lusatia. There were no significant differences between the ecology of populations of P. polygonifolius on the eastern edge of its range and those in the central part. P. polygonifolius was found growing both in natural habitats like unspoiled peat bogs, and in anthropogenic habitats such as exploited peat bogs and drainage ditches. In both types of habitats its populations were abundant and competent in terms of generative propagation. The lack of geographical barriers as well as biology and fitness of P. polygonifolius individuals from the study area suggest that marginal populations are possibly a part of a large metapopulation, covering whole (Polish and German) area of Lusatia, however this hypothesis was not tested in details. The main factor shaping the easternmost limit of the general range of P. polygonifolius is most likely climate, which prevents P. polygonifolius from spreading farther eastwards.
    Journal for Nature Conservation - J NAT CONSERV. 03/2012;
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    ABSTRACT: The present study is focused on Potamogeton polygonifolius – the species considered to be endangered in Germany, the Czech Republic, Poland and Switzerland. Field studies were carried out in Lower Silesia and Lusatia in southwestern Poland in order to verify the present state of the marginal populations of P. polygonifolius, to determine the habitat preferences of the species in the study area, to compare the ecological data between marginal and central populations and finally to recognise the factors constraining the easternmost limit of the P. polygonifolius. In total, 18 populations were examined, and 11 relevés were collected. The relevés gathered were compared with 95 relevés made in northwestern Germany, and with 10 relevés collected in the German part of Lusatia. There were no significant differences between the ecology of populations of P. polygonifolius on the eastern edge of its range and those in the central part. P. polygonifolius was found growing both in natural habitats like unspoiled peat bogs, and in anthropogenic habitats such as exploited peat bogs and drainage ditches. In both types of habitats its populations were abundant and competent in terms of generative propagation. The lack of geographical barriers as well as biology and fitness of P. polygonifolius individuals from the study area suggest that marginal populations are possibly a part of a large metapopulation, covering the whole (Polish and German) area of Lusatia, however, this hypothesis was not tested in detail. The main factor shaping the easternmost limit of the general range of P. polygonifolius is most likely climate, which prevents P. polygonifolius from spreading farther eastwards.
    Journal for Nature Conservation 01/2012; 20:76-84. · 1.54 Impact Factor

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