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Tytuł:
Changes in the characteristics of the soil and vegatation during the primary succession in the marginal zone of the Werenskiold glacier, Spitsbergen
Autorzy:
Pirożnikow, Ewa
Górniak, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/2052774.pdf
Data publikacji:
1992
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Spitsbergen
soils
vegetation succession
Źródło:
Polish Polar Research; 1992, 13, 1; 19-29
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The vegetation of sands in the Chernihiv city (Ukraine)
Autorzy:
Lukash, Oleksandr
Danko, Hanna
Powiązania:
https://bibliotekanauki.pl/articles/2024717.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
vegetation
sands
Chernihiv city
anthropogenic influence
Opis:
The vegetation of the Chernihiv city sands (natural and technogenic origin) has rather high syntaxonomic diversity (17 associations and 5 initial communities) and the ruderal phytocoenoses prevail. Natural phytocenoses are represented to a small extent (Cyperetum flavescentis Koch 1926, Dichostylidi–Helochloetum alopecuroidis (Timar 1950) Pietsch 1973, Artemisia scoparia–Dianthus borbasii community, Kochietum arenariae Fijalk 1978). Synanthropic psammophytes species communities that are more resistant to anthropogenic influence, are formed under urban conditions. The ecological range of vegetation of sandy alluvia varies from xerophytic phytocoenoses in mineral-poor sand (Kochietum arenariae) to the communities, which indicate waterlogged areas with increased mineralization of water and saline bottom sediments (Typhetum laxmannii Nedulcu 1968). Itispossibletoobserve the adventization and apophization of sand vegetation, one of the indicators of which is the rupture of coenotic connections between the species of the community. These phenomena indicate that the process of synanthropization of the vegetation cover of the city keeps intensifying, and first of all, occurs in places of newly formed technogenic ecotopes.
Źródło:
Studia Quaternaria; 2020, 37; 31-44
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Road Traffic Noise Attenuation by Vegetation Belts at Some Sites in the Tarai Region of India
Autorzy:
Tyagi, V.
Kumar, K.
Jain, V. K.
Powiązania:
https://bibliotekanauki.pl/articles/950218.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
noise
attenuation
traffic
frequency
vegetation belt
Tarai
Opis:
Noise measurements have been carried out at eleven different sites located in three prominent cities of the Tarai region of India to evaluate the effectiveness of vegetation belts in reducing traffic noise along the roadsides. Attenuation per doubling of distance has been computed for each site and excess attenuation at different 1/3 octave frequencies has been estimated. The average excess attenuation is found to be approximately 15 dB over the low frequencies (200 Hz to 500 Hz) and between 15 dB to 20 dB over the high frequencies (8 kHz to 12.5 kHz). Over the critical middle frequencies (1-4 kHz), the average excess attenuation (between 10-15 dB) though not as high, is still significant, with a number of sites showing an excess attenuation of 15 dB or more at 1 kHz. The results indicate that sufficiently dense vegetation belts along the roadsides may prove as effective noise barriers and significant attenuation may be achieved over the critical middle frequencies (1-4 kHz).
Źródło:
Archives of Acoustics; 2013, 38, 3; 389-395
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Soil and vegetation conditions in small valleys at southern coast of Bellsund, Spitsbergen
Autorzy:
Klimowicz, Zbigniew
Uziak, Stanisław
Powiązania:
https://bibliotekanauki.pl/articles/2052590.pdf
Data publikacji:
1996
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Spitsbergen
valleys
soil and vegetation conditions
Źródło:
Polish Polar Research; 1996, 17, 1-2; 93-106
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dryas aeolian landforms in Arctic deflationary tundra, central Spitsbergen
Autorzy:
Borysiak, Janina
Pleskot, Krzysztof
Rachlewicz, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/2041820.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Svalbard
biogeomorphology
Dryas octopetala
tundra
vegetation pattern
Źródło:
Polish Polar Research; 2020, 41, 1; 41-68
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Succession of vascular plants in front of retreating glaciers in central Spitsbergen
Autorzy:
Prach, Karel
Rachlewicz, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/2051430.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Svalbard
climate warming
glacier forelands
vegetation succession
Źródło:
Polish Polar Research; 2012, 4; 319-328
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The meadow, psammophytic and ruderal plant communities with Solidago canadensis L. in Chernihiv Polesie (Ukraine)
Autorzy:
Danko, Hanna
Lukash, Oleksandr
Morozova, Iryna
Boiko, Volodymyr
Yakovenko, Oleksandr
Powiązania:
https://bibliotekanauki.pl/articles/2025976.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
vegetation
anthropogenic influence
Chernihiv Polesie
Solidago canadensis L.
Opis:
In Chernihiv Polesie Solidago canadensis most often grows in ruderal communities of the Berteroëtum incanae association. Characteristic plant species of the Artemisietea vulgaris class have been found in many phytocenoses with Solidago canadensis. A typical ruderal community dominated by S. canadensis was found, in which characteristic species of the xero-mesophytic ruderal vegetation of the Onopordion acanthii are well represented. Initial communities with the S. canadensis coverage of 25 to 60% in combination with the species of this order and the characteristic species of other high syntaxa were found. Most of them are the transformed meadow phytocenoses of the river floodplains and less often – the psammophytic phytocenoses of pine terraces. The process of ruderalization of meadow ecosystems as a result of the invasion of S. canadensis in Chernihiv Polesie was revealed. This process is especially pronounced on the loess islands, where meadows change into semiruderal grasslands and herblands of the Convolvulo arvensis – Agropyrion repentis alliance. S. canadensis invasion leads to xerophytization and unification of the floodplains meadow phytocenoses grassland. The course of these processes is accelerated by anthropogenic pressure on ecosystems and has irreversible consequences. S. canadensis rarely occurs in the Koelerio–Corynephoretea canescentis class psammophytic communities.
Źródło:
Studia Quaternaria; 2021, 38, 2; 149-158
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The contemporary distribution of the aquatic Tertiary relict plant species of the Bern Convention in eastern Polesye
Autorzy:
Lukash, Oleksandr
Miroshnyk, Iryna
Strilets, Svitlana
Rak, Oleksandr
Sazonova, Olena
Powiązania:
https://bibliotekanauki.pl/articles/2025983.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
anthropogenic influence
aquatic vegetation
Bern Convention
eastern Polesye
Tertiary relict
Opis:
In spite of modern trends in the development of the eastern Polesye flora, the relict have been preserved in the aquatic ecotopes of Europe, including eastern Polesye. The paper highlights the peculiarities of the distribution in the region of three aquatic Tertiary relics preserved by the Bern Convention. According to the results of a field research, the degree of a modern rarity of the aquatic relict species in eastern Polesye was established, in particular, a very rare species (Aldrovanda vesiculosa), a moderately rare species (Trapa natans) and a relatively rare species (Salvinia natans). The current distribution of these relict species in the region has been positively affected by the increase in the values of maximum temperatures and isotherms of the summer months. A negative impact is made by the abrupt changes in the hydrological regime and the growth of anthropogenic eutrophication of reservoirs. Aldrovanda vesiculosa eliminates with minor changes in living conditions; Salvinia natans is the most tolerant to anthropogenic factors, but shows annual fluctuations in numbers; Trapa natans is stable distributed and has a tendency to expanding of its populations. The relics are the dominants of the Salvinio–Spirodeletum (polyrrhizae), Lemno Utricularietum vulgaris, Spirodelo–Aldrovandetum vesiculosae, Trapetum natantis and Trapо–Nymphoidetum (peltatae) communities.
Źródło:
Studia Quaternaria; 2021, 38, 2; 127-132
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Variability of contemporary vegetation around Petuniabukta, central Spitsbergen
Autorzy:
Prach, Karel
Klimešová, Jitka
Košnar, Jiří
Redčenko, Olexii
Hais Martin
Powiązania:
https://bibliotekanauki.pl/articles/2051431.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Svalbard
bryophytes
lichens
ordination analysis
vascular plants
vegetation mapping
Źródło:
Polish Polar Research; 2012, 4; 383-394
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A study on color vegetation canopy images denoising algorithm
Autorzy:
Wang, C.
Liu, Y.
Wang, P.
Powiązania:
https://bibliotekanauki.pl/articles/199849.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
image denoising
color vegetation canopy images
adaptive mean filtering
color space
Opis:
Due to the characteristics of color vegetation canopy images which have multiple details and Gaussion noise interference, the adaptive mean filtering (AMF) algorithm is used to perform the denoising experiments on noised images in RGB and YUV color space. Based on the single color characteristics of color vegetation canopy images, a simplified AMF algorithm is proposed in this paper to shorten the overall running time of the denoising algorithm by simplifying the adaptive denoising processing of the component V, which contains less image details. Experimental results show that this method can effectively reduce the running time of the algorithm while maintaining a good denoising effect.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2020, 68, 3; 609-626
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Land cover change assessment of vaal harts irrigation scheme using multi-temporal satellite sata
Autorzy:
Otieno, F. A.
Ojo, O. I.
Ochieng, G. M.
Powiązania:
https://bibliotekanauki.pl/articles/205331.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
land use change
vaal harts
GIS
normalized difference vegetation index
NDVI
VHS
Opis:
Land cover change (LCC) is important to assess the land use/land cover changes with respect to the development activities like irrigation. The region selected for the study is Vaal Harts Irrigation Scheme (VHS) occupying an area of approximately 36, 325 hectares of irrigated land. The study was carried out using Land sat data of 1991, 2001, 2005 covering the area to assess the changes in land use/land cover for which supervised classification technique has been applied. The Normalized Difference Vegetation Index (NDVI) index was also done to assess vegetative change conditions during the period of investigation. By using the remote sensing images and with the support of GIS the spatial pattern of land use change of Vaal Harts Irrigation Scheme for 15 years was extracted and interpreted for the changes of scheme. Results showed that the spatial difference of land use change was obvious. The analysis reveals that 37.86% of additional land area has been brought under fallow land and thus less irrigation area (18.21%). There is an urgent need for management program to control the loss of irrigation land and therefore reclaim the damaged land in order to make the scheme more viable.
Źródło:
Archives of Environmental Protection; 2013, 39, 4; 59-70
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Contemporary changes in vegetation of polar regions
Autorzy:
Olech, M.
Wegrzyn, M.
Lisowska, M.
Slaby, A.
Angiel, P.
Powiązania:
https://bibliotekanauki.pl/articles/12010.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
contemporary change
vegetation
polar region
climate change
tundra plant
plant community
plant succession
glacier forefield
Antarctic
Arctic
Spitsbergen
King George Island
global climate change
vegetation change
new plant community
Opis:
Rapid climate changes which have been observed over the recent years in both polar regions of the Earth, directly or indirectly affect vegetation dynamics. This article presents the main directions of the changes taking place in the recent years in tundra communities of both polar regions, based on original research carried out in the Arctic in Spitsbergen and in the maritime Antarctic on King George Island.
Źródło:
Papers on Global Change; 2011, 18
2300-8121
1730-802X
Pojawia się w:
Papers on Global Change
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
12 millennia of climatic and human induced vegetation changes in the Lower San Valley near Jarosław (SE Poland) in the light of pollen analysis
Autorzy:
Kołaczek, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/2026704.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Sandomierz Basin
pollen analysis
vegetation history
Late Glacial
Holocene
human impact
Ulmus
Opis:
Veg e ta tion changes in the Lower San Val ley near Jaros³aw are re con structed from the Youn ger Dryas to the pres ent time on the ba sis of palynological anal y sis of the peat core. The pol len pro file came from a an old riverbed and was sup ple mented by ra dio car bon datings. The Youn ger Dryas and early Preboreal veg e ta tion was char ac ter ised by a high pro por tion of for est com mu ni ties with pine (Pinus sylvestris and P. cembra) and birch (Betula), while patches of open area were dom i nated by the steppe with Ar te mi sia. Cli ma tic ame lio ra tion dur ing the Preboreal chronozone led to the rapid spread of elm (Ulmus), which was prob a bly a dom i nant taxon on the low est ter races of the val ley. Terrestrialization of the wa ter body ex ist ing in the palaeomeaner and the sub se quent be gin ning of peat ac cu mu la tion caused a de - te ri o ra tion in pol len pres er va tion. Hence, the in ter pre ta tion of the pro file sec tion span ning the pe riod be tween the Bo - real and Subatlantic chronozones was se ri ously dis turbed due to se lec tive cor ro sion and the overrepresentation of Pinus sylvestris type and Filicales monolete sporomorphs. Be tween ca. 336 and 1152 AD fluc tu a tions in wood land cover were re corded. Im por tant com po nents in those for ests, de spite the dom i na tion of Pinus sylvestris, were Quercus, Carpinus betulus, Fagus sylvatica and Abies alba. The first pol len grains of ce re als (Cerealia type) were found be fore ca. 1605–1414 BC and may be at trib uted to the ag ri cul tural ac tiv ity of the Neo lithic and/or early Bronze tribes. Pe ri - ods of strong de for es ta tion caused by hu mans were prob a bly re lated to the time when the Tarnobrzeska Group of the Lusatian Cul ture and the Przeworska Cul ture were ac tive. The first groups of Slavs did not sig nif i cantly in flu ence the en vi ron ment, but the sub se quent de vel op ment of those groups led to more vis i ble de for es ta tion, which was trig gered af ter the es tab lish ment of Jaros³aw in the 11th cen tury AD.
Źródło:
Studia Quaternaria; 2011, 28; 25-39
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characteristics of fungi affecting root-crops in 1997
Autorzy:
Wisniewska, K
Kubicka, K.
Remlein-Starosta, D.
Rataj-Guranowska, M.
Powiązania:
https://bibliotekanauki.pl/articles/65296.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
root crop
pathogen
plant protection
economic loss
contamination
vegetation
fungi
fungal disease
storage
Opis:
In 1997, supplying Plant Pathogenic Microorganism Collection, microflora of diseased root crops from field and storage was analyzed. Samples from Districts lnspectors of PIOR from area of Poland were received, and 139 isolates of fungi from 369 samples of sugar and forage beat, forage cabbage, forage carrot and potatoes were obtained. The most often fungi from genus Fusarium occurred, and 23.5% of isolates from beet, 14.2% from cabbage, 29.5% from carrot and 48,2% from potatoes were received. The second dominant was species Alternaria alternata, isolated from diseased plants in 28.9%, 50%, 18.5% and 20% respectively. Among saprophytic fungi, species Penicillium and Aspergillus were represented in 9,7% of obtained isolates. Received results suggcsted that Fusarium spp. and Alternaria alternata could be potentially dangerous for root crops as a pathogens or weak pathogens.
W 1997 roku, uzupełniając Kolekcję Mikroorganizmów Patogenicznych dla Roślin, zanalizowano mikoflorę chorych roślin okopowych, pochodzących z upraw polowych i przechowalni, przesyłanych przez Wojewódzkie Inspektoraty PIOR z terenu całego kraju. Wyosobniono łącznie 139 izolatów grzybów z 369 prób roślin buraka cukrowego i pastewnego, kapusty pastewnej, marchwi pastewnej i ziemniaka. Z roślin tych otrzymano odpowiednio 38, 14, 27 i 60 izolatów, w tym 25, 10, 16 oraz 51 stanowiły grzyby patogeniczne, natomiast pozostałe 13, 4, 11 i 9 stanowiły tzw. słabe patogeny i saprofity. Najczęściej izolowano grzyby z rodzaju Fusarium. Stanowiły one 23,5% izolatów wyosobnionych z buraka cukrowego i pastewnego, 14,2% z kapusty pastewnej, 29,5% z marchwi pastewnej oraz 48,2% z ziemniaka. Następny pod względem częstości był gatunek Alternaria alternata, izolowany odpowiednio w 28,9; 50; 18,5; i 20%. Wśród grzybów saprofitycznych wyróżnić należy rodzaj Penicillium i Aspergillus reprezentowane przez około 9,7% izolatów otrzymanych łącznie z wszystkich roślin. Wyniki sugerują, że Fusarium spp. i Alternaria alternata mogą stanowić potencjalne zagrożenie dla roślin okopowych jako grzyby chorobotwórcze lub grzyby określane jako słabe patogeny.
Źródło:
Journal of Plant Protection Research; 2000, 40, 1
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Late Holocene palaeoenvironment of Tse Dura, a Later Stone Age (LSA) rock shelter, north-central Nigeria
Autorzy:
Orijemie Emuobosa Akpo, Orijemie
Powiązania:
https://bibliotekanauki.pl/articles/2025245.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Microliths
Vegetation history
Plant management
Tiv
Middle Benue Valley
Nigeria
Nauki o Ziemi
Opis:
Palynological and archaeobotanical analyses were conducted on excavated sediments from Tse Dura, a Later Stone Age rock shelter in north-central Nigeria with the aim of reconstructing the environment conditions at the site within the last millennium. From 933 ± 29 BP to 802 ± 29 BP, the environment alternated between Guinea savanna with dry conditions, and secondary and riverine forests with humid conditions. During these periods of environmental fluctuations, the LSA populations engaged in the management of economic plants the most significant of which included Dioscorea spp. Pennisetum glaucum and Elaeis guineensis, and exploited wild plants such as Pavetta crassipes, Sarcocephalus latifolius and Lophira cf. lanceolata for dietary and ethnomedicinal purposes. Around 310 ± 30 BP cal, the environment became very wet after which it was succeeded by a drier period. It was during this period that Sorghum bicolor became prominent, and the environment attained its current status dominated by Guinea savanna elements and secondary forests.
Źródło:
Studia Quaternaria; 2018, 35; 41-53
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
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