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Tytuł:
Pomiary strumieni masy w rurociągach wody chłodzącej skraplacze w elektrowni zawodowej
Measurements of streams flow in pipes of the cooling water condensers in professional power plant
Autorzy:
Andruszkiewicz, A.
Kubas, K.
Pliszka, P.
Wędrychowicz, W.
Powiązania:
https://bibliotekanauki.pl/articles/276161.pdf
Data publikacji:
2014
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
strumień masy
metoda bezinwazyjna
metody piętrzące
stream flow
non-invasive method
method of pilling
Opis:
W artykule przedstawiono trzy podstawowe sposoby ciągłego pomiaru strumieni wody w rurociągach o bardzo dużych średnicach i krótkich odcinkach prostych między elementami armatury występujących m.in. w rurociągach wody chłodzącej skraplacze turbin parowych. Opisano zasadę działania i przedstawiono przykładowe charakterystyki przepływomierzy kolanowych i uśredniających. Wskazano główne problemy, jakie spotyka się podczas eksploatacji tych przepływomierzy. Wskazano, że ciągłe pomiary strumieni masy w rurociągach o dużych średnicach i krótkich odcinkach są niezbędne, np. w bilansowaniu układów chłodni kominowej i skraplaczy turbin parowych. Wykazano, że niepewności pomiaru strumieni masy takimi urządzeniami są rzędu 3–4 %.
In this article are presented three basic methods of continual measurement steams of water in the pipelines with very big diameters and short straight sections between armature occurring, inter alia, in cooling water for steam turbines pipelines. There article describes the operating principle and shows samples characteristics of elbows and averaging flow meters. It shows main problems which appear during the exploitation of this flow metres, also showing that the continuous flow measurement of the water streams in pipelines with large diameters and short sections are necessary, for example in balancing the cooling tower layouts and steam turbines condensers. It is presented that the uncertainties of the flow streams measurement with this devices are of the order of 3–4 %.
Źródło:
Pomiary Automatyka Robotyka; 2014, 18, 9; 91-95
1427-9126
Pojawia się w:
Pomiary Automatyka Robotyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Enzymatic profile, adhesive and invasive properties of Candida albicans under the influence of selected plant essential oils
Autorzy:
Budzyńska, Aleksandra
Sadowska, Beata
Więckowska-Szakiel, Marzena
Różalska, Barbara
Powiązania:
https://bibliotekanauki.pl/articles/1039346.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
adhesion
Candida albicans
hydrolytic enzymes
germ tubes
invasion
mycelium
Opis:
The influence of essential oils (EOs) used at sublethal level, on the presence and intensity of Candida albicans virulence factors was evaluated. Minimal inhibitory concentrations (MICs) of Lemon balm, Citronella, Geranium and Clove oils were established as 0.097% (v/v). Using the agar plates with substrates for proteases, phospholipases and hemolysins it was shown that C. albicans ATCC 10231 and C. albicans ATCC 90028 strains differed in the type and amount of enzymes produced. No significant difference in their total amount could be detected after pretreatment for 24 h with EOs at ½ MIC. However, the short-term (1 h) acting oils at MIC caused a statistically significant reduction in this activity. In the API ZYM test it was demonstrated that both strains exhibited activity of the same 9 out of 19 enzyme types and that EOs caused a significant decrease in the release of some of them. In the presence of subMIC of EOs, or when the fungus had previously been exposed to the MIC of oil, germ tubes formation was significantly and irreversibly reduced. Such C. albicans spotted on the Spider agar containing EOs at subMICs were unable to penetrate the agar. A significant decrease in the C. albicans adhesion to the fibroblast monolayer with respect to controls was also demonstrated when yeasts had been exposed to EOs at MIC (1 h) in liquid medium. Thus, it has been shown that tested oils, used even at subMIC, exhibit significant activity reducing the presence/quantity of important C. albicans virulence factors.
Źródło:
Acta Biochimica Polonica; 2014, 61, 1; 115-121
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An assessment of the Ambrosia L. pollen threat at a regional scale using the example of the town of Sosnowiec (Silesian Uplands, Poland)
Ocena zagrożenia pyłkiem Ambrosia L. w skali regionalnej na przykładzie miasta Sosnowca (Wyżyna Śląska, Polska)
Autorzy:
Chlopek, K.
Dabrowska-Zapart, K.
Tokarska-Guzik, B.
Powiązania:
https://bibliotekanauki.pl/articles/27805.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
aerobiology
Ambrosia
pollen count
meteorological parameter
invasive plant
Polska
Sosnowiec town
pollen threat
regional scale
Silesian Upland
Opis:
The investigation of Ambrosia pollen counts in the air of Sosnowiec was carried out from 1998 to 2010 by means of the volumetric method. The pollen season which was determined by means of the 98% method started at the end of July and the beginning of August and lasted until the end of October. The highest Ambrosia pollen count was recorded in 1999 (222 grains x m-3) and the lowest in 2001 (18 grains x m-3). It was stated that the daily count of pollen grains depended on the wind direction and maximum air temperature. The strongest correlations were found with maximum temperature and with a wind direction from the south east. A high negative correlation coefficient was found between the frequency of inflows of air masses from the west and the annual total of pollen grains and the value of the maximum daily count. The closest sites of Ambrosia L. are at a distance of 25–40 kilometres from the sampling point. Significant correlations with the frequency of inflow of air masses can support the conclusion that Ambrosia pollen grains recorded in Sosnowiec were most probably carried not only from local sources but also, at least in part, from distant places.
Badania koncentracji pyłku Ambrosia w powietrzu Sosnowca prowadzono w latach 1998-2010 metodą wolumetryczną. Początek sezonu pyłkowego Ambrosia, wyznaczony metodą 98%, rozpoczynał się na przełomie lipca i sierpnia i trwał do końca października. Wysokie koncentracje pyłku notowano najczęściej w trzeciej dekadzie sierpnia lub w pierwszej połowie września. Najwyższe stężenie pyłku Ambrosia odnotowano w 1999 roku (222 ziarn x m-3), najniższe w 2001 roku (18 ziarn x m-3). Wykazano, iż stężenie dobowe ziarn pyłku zależało od kierunku wiatru i temperatury maksymalnej powietrza. Najsilniejszą korelację stwierdzono dla temperatury maksymalnej i dla kierunku wiatru z południowego wschodu. Znaleziono wysoki ujemny współczynnik korelacji między częstością napływu mas powietrza z zachodu a wartością sumy rocznej ziarn pyłku oraz z wartością maksymalnego stężenia. Stwierdzono również oddziaływanie masy powietrza polarno-morskiego na długość sezonów pyłkowych i na wartości maksymalnego stężenia Ambrosia. Przy napływie tego typu powietrza notowano dłuższe sezony pyłkowe oraz niższe maksima sezonowe. Stanowiska z Ambrosia zostały stwierdzone w odległości 25-40 km na SW i NW od punktu pomiarowego. Istotne korelacje z częstością napływu mas powietrza mogą potwierdzać fakt, iż ziarna pyłku Ambrosia rejestrowane w Sosnowcu pochodzą nie tylko z lokalnych źródeł ale również z dalekiego transportu.
Źródło:
Acta Agrobotanica; 2011, 64, 2
0065-0951
2300-357X
Pojawia się w:
Acta Agrobotanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of invasive Fallopia taxa on resident plant species in two river valleys (southern Poland)
Autorzy:
Chmura, D.
Tokarska-Guzik, B.
Nowak, T.
Wozniak, G.
Bzdega, K.
Koszela, K.
Gancarek, M.
Powiązania:
https://bibliotekanauki.pl/articles/58507.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
invasive species
biological invasion
Fallopia
plant species
river valley
vegetation
phenology
Polska
Opis:
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.
Źródło:
Acta Societatis Botanicorum Poloniae; 2015, 84, 1
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chemicals with a natural reference for controlling water hyacinth, Eichhornia crassipes (Mart.) Solms
Autorzy:
El-Shahawy, T.A.E.-G.
Powiązania:
https://bibliotekanauki.pl/articles/66559.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
chemical control
natural control
water hyacinth
aquatic plant
Eichhornia crassipes
invasive species
herbicide
weed
Opis:
Life cannot exist without water. Appropriate management of water, from the water’s source to its utilization, is necessary to sustain life. Aquatic weeds pose a serious threat to aquatic environments and related eco-environments. Short- and long-term planning to control aquatic weeds is extremely important. Water hyacinth, Eichhornia crassipes (Mart.) Solms, is one of the world’s worst pests with a bad reputation as an invasive weed. In this study we are seeking the possibility of using certain chemicals with a natural background, for controlling water hyacinth since there is a delicate balance that needs to be taken into account when using herbicides in water. Five compounds, namely: acetic acid, citric acid, formic acid, and propionic acid, in three concentrations (10, 15, and 20%) were applied (i.e. as a foliar application under wire-house conditions) and compared with the use of the herbicide glyphosate (1.8 kg ∙ ha–1). All of the five compounds performed well in the control of the water hyacinth. As expected, the efficacy increased as the concentration was increased from 10 to 20%. With formic and propionic acids, the plants died earlier than when the other acids or the herbicide glyphosate, were used. Acetic acid came after formic and propionic acids in terms of efficacy. Citric acid ranked last. Formic acid/propionic acid mixtures showed superior activity in suppressing water hyacinth growth especially at the rate of (8 : 2) at the different examined concentrations (3 or 5 or 10%) compared to the formic acid/acetic acid mixtures. Using the formic acid/propionic acid mixture (8 : 2; at 3%) in the open field, provided good control and confirmed the viability of these chemicals in the effective control of water hyacinth. Eventually, these chemical treatments could be used on water for controlling water hyacinth. In the future, these chemicals could probably replace the traditional herbicides widely used in this regard. These chemicals are perceived as environmentally benign for their rapid degradation to carbon dioxide and water. For maximum efficiency thorough coverage especially in bright sunlight is essential.
Źródło:
Journal of Plant Protection Research; 2015, 55, 3
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ecological significance of some kenophytes in Lower Silesian national parks
Autorzy:
Fabiszewski, J
Brej, T.
Powiązania:
https://bibliotekanauki.pl/articles/58362.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
Impatiens glandulifera
plant ecology
biological invasion
Lower Silesian national park
invasiveness
environmental problem
non-native species
Reynoutria japonica
national park
botany
invasive species
habitat preference
Sudetes Mountains
Opis:
The paper presents the results of several years investigations (2003-2007) on two invaders: the Himalayans Impatiens glandulifera and Asiatic Reynoutria japonica. The Sudety Mountains and their national parks are under strong pressure of both species, threatening the local vegetation. The four-year investigations have been carried out in field, glasshouse and in laboratory. Invasive species have their peculiar life histories which help them to occupy new areas. Those are above all the specific generative reproduction strategies (Impatiens) or vegetative reproduction strategies (Reynoutria). Both strategies secure the reproductive success and to capture more and more highly situated areas of the mountains. Very significant characteristics connected with the expansion of invaders is the excessively over and above the average production of seeds (Impatiens) and a huge annual increment aboveground biomass (Reynoutria). The investigated invasive species are probably not equipped with influence of allelopatic type as of greater importance is their competitive strength. The invaders can eliminate a part of the early spring flora belonging to the geophyte group and impoverish the regional biological diversity. Both the invasive plants enter also into some moist mountain forest communities.
Źródło:
Acta Societatis Botanicorum Poloniae; 2008, 77, 2
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Invasive Species and Maintaining Biodiversity in the Natural Areas – Rural and Urban – Subject to Strong Anthropogenic Pressure
Autorzy:
Fortuna-Antoszkiewicz, B.
Łukaszkiewicz, J.
Rosłon-Szeryńska, E.
Wysocki, C.
Wiśniewski, P.
Powiązania:
https://bibliotekanauki.pl/articles/124073.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
anthropogenic pressure
alien plant species
biodiversity
vegetation maintenance
Opis:
Expansion of invasive species can be clearly seen all over Poland. Foreign tree and herbaceous plant species are effectively taking over more and more habitats competing with native vegetation. This phenomenon is strongly pronounced in the areas subject to strong anthropogenic pressure. The presence of invasive plants replacing the native vegetation is a threat for biodiversity and ecological balance. The research carried out by the authors between 2011 and 2017 on selected sites (comparatively: urban and open spaces, including a 600 ha park and a 10 km long forest strip along a river) confirms the pressure exerted by invasive species irrespective of the natural conditions of a particular site or its type – in each case it is most prominent in areas where vegetation is not properly maintained or where it is not maintained at all. The research was based on the dendrological inventories and phytosociological assessments. The inventories were used for a detailed assessment of both the condition and structure of treestands, including accounting for invasive species. Phytosociological assessment can, among others, form a basis for forecasting ecological stability of individual plant communities. Uncontrolled expansion of invasive species, especially in the areas of strong anthropogenic pressure, may cause unfavourable natural succession and in consequence – destabilisation of ecological system in a given area.
Źródło:
Journal of Ecological Engineering; 2018, 19, 6; 14-23
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Carpobrotus Management in a Mediterranean Sand Dune Ecosystem: Minimum Effective Glyphosate Dose and an Evaluation of Tarping
Autorzy:
Fos, Mariano
Sanz, Borja
Sanchis, Enrique
Powiązania:
https://bibliotekanauki.pl/articles/1955440.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
invasive plant species
chemical control
dune restoration
herbicide
iceplant
weed-control fabric
Opis:
At a global scale, biological invasions represent one of the most important threats to biodiversity conservation. The Carpobrotus (Aizoaceae) genus, which is native to South Africa, has been introduced into five different continents and is particularly invasive in many coastal habitats. The application of glyphosate avoids some problems associated with manually controlling Carpobrotus over large spatial scales. However, before this practice can be extended and its impact minimized, its effectiveness under different application conditions must be assessed first. Thus, glyphosate was sprayed at different concentrations (0.5, 0.4, 0.3, 0.2, 0.1, and 0.05 g/m2) on experimental plots with 100% Carpobrotus coverage to determine the minimum effective dose. Tarping was also evaluated as an alternative method for Carpobrotus management over reduced areas. Thus, four different weed-control fabric types were tested: black anti-weed fabric, sewn felt, black G-300 polyethylene, and Fijavert coconut-anti-weed matting on experimental plots with 100% Carpobrotus coverage. The obtained results showed that the minimum effective dose of glyphosate which prevents Carpobrotus regrowth in dune ecosystems was 0.4 g/m2. It was also shown that at least three months of tarping were required under winter conditions to produce complete Carpobrotus plant wilting and thus, prevent their regrowth. No significant effect on Carpobrotus growth was observed in terms of the fabric type used for the tarping tests. The presence of native species seedlings in the experimental plots after the death of the Carpobrotus plants following the application of herbicides or tarping was also monitored.
Źródło:
Journal of Ecological Engineering; 2021, 22, 7; 57-66
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estimation of pollen and seed production of common ragweed in France
Autorzy:
Fumanal, B.
Chauvel, B.
Bretagnolle, F.
Powiązania:
https://bibliotekanauki.pl/articles/51069.pdf
Data publikacji:
2007
Wydawca:
Instytut Medycyny Wsi
Tematy:
Compositae
weed
pollen
invasive plant
common ragweed
Ambrosia artemisiifolia
France
plant biomass
plant volume
seed
Opis:
Common ragweed (Ambrosia artemisiifolia L.) is an invasive weed of fi eld crops and human-disturbed habitats in Europe. As well as in its natural range (North America), common ragweed is a threat to human health due to its abundant allergenic pollen release. Most studies have been focused on airborne pollen monitoring, but to date, no data have been available on precise individual plant pollen and seed production related to plant traits growing in natural environment and on their corresponding source of variation. The aim of this study was to evaluate pollen and seed production of common ragweed plants in several populations in France. Seasonal pollen production per plant ranged from 100 million to 3 billion and seed production from 346 to 6,114, depending on plant size and habitat. Common ragweed plants developing in fi eld crops produced more pollens and seeds than those growing in other habitats. Pollen and seed production was closely related to plant volume and biomass, thus providing a means of estimating potential pollen and seed production in given target areas. Such biological data could be integrated into population management strategies or into airborne pollen modelling.
Źródło:
Annals of Agricultural and Environmental Medicine; 2007, 14, 2
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Czy oddziaływania allelopatyczne to "nowa broń" roślin inwazyjnych? Kontrowersje wokół badań dotyczących decydującej roli katechiny w inwazji Centaurea maculosa
Are allelopathic interaction a "novel weapon" of alien invasive plant species ? Controversial reports on the role of catechin in Centaurea maculosa invasion
Autorzy:
Gniazdowska, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/1197491.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Przyrodników im. Kopernika
Opis:
Catechin, a putative allelochemical of Centaurea maculosa, has been proposed to mediate invasion of this species in the prairie of USA. It was earlier reported that catechin was present in high concentration in the soil, and may be lethal to neighboring plants. More detailed experiments carried out on soil samples taken from long-term knapweed infested sites in USA shaded doubt on the importance of this chemical in C. maculosa invasion success. The paper presents a comparison of the results obtained by the two opposite research groups investigating the hypothesis concerning possible involvement of catechin as a "novel weapon" in "allelopathic advantage against resident species".
Źródło:
Kosmos; 2008, 57, 1-2; 39-41
0023-4249
Pojawia się w:
Kosmos
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Oddziaływania allelopatyczne - "nowa broń" roślin inwazyjnych
Allelopathic interaction - a "novel weapon" of alien invasive plant species
Autorzy:
Gniazdowska, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/1198621.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Przyrodników im. Kopernika
Opis:
Allelopathy may be considered as a force that structures plant communities, and may be an important factor of alien species invasion. Invasive species are the organisms that have been introduced into the area where they did not originate or evolve. Additionally such introduction does cause economic and environmental harm or harm to human health. Many of the invaders are not as successful at the native habitat as in invaded recipient communities. Their invasion leads to establishing monocultures, resulting in the loss of biodiversity in ecosystems. The paper describes the 'novel weapon' hypothesis explaining the invasive success. Allelopathy is suggested to be the mechanism of competition between the alien and native plant species. The allelochemicals released by the invaders are relatively ineffective against their natural neighbors due to adaptation, but they may be highly inhibitory to the newly encountered plants in the invaded communities. The success of alien species invasion is described as the allelopathic effect e.g. of European knapweeds (Centaurea maculosa, C. diffusa and Acroptilon repens) or Alliaria petiolata on native American grass species.
Źródło:
Kosmos; 2005, 54, 2-3; 221-226
0023-4249
Pojawia się w:
Kosmos
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Czeremcha amerykańska Prunus serotina Ehrh. na terenie Parku Krajobrazowego „Dolina Jezierzycy”
Black cherry Prunus serotina Ehrh. within the area of the Jezierzyca Valley Landscape Park
Autorzy:
Halarewicz, A.
Rowieniec, A.
Powiązania:
https://bibliotekanauki.pl/articles/1011976.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
Prunus serotina
parki krajobrazowe
degeneracja
zbiorowiska roslinne
wystepowanie
czeremcha amerykanska
Park Krajobrazowy Dolina Jezierzycy
lesnictwo
prunus serotina
invasive plant
degeneration of plant communities
Opis:
Mass introduction of black cherry Prunus serotina as a forest component in Europe, since the second half of the 1900s, resulted in negative changes in many thus enriched forest communities. The aim of our study was to record the distribution of P. serotina within the Jezierzyca Valley Landscape Park and to determine possible modifications in floristic composition that might be ascribed to the presence of this alien species. The analysis of plant communities in sample plots with and without P. serotina demonstrated a considerable destructive effect of this neophyte on the floristic composition over the area of the park. Furthermore, the incidence of the black cherry in the vicinity of riparian and alder sites may threaten these floristically valuable areas. In our opinion, such situation requires control.
Źródło:
Sylwan; 2009, 153, 09; 635-640
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preliminary field studies on survival rate of seeds of invasive terophyte Impatiens glandulifera Royle (Balsaminaceae)
Autorzy:
Janczak, B.
Powiązania:
https://bibliotekanauki.pl/articles/878366.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu
Tematy:
survival rate
seed
invasive plant
Impatiens glandulifera
Balsaminaceae
invasion ecology
invasive species
Źródło:
Roczniki Akademii Rolniczej w Poznaniu. Botanika-Steciana; 2013, 17
1896-1908
Pojawia się w:
Roczniki Akademii Rolniczej w Poznaniu. Botanika-Steciana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamics and occurrence patterns of the Tatarian orache Atriplex tatarica L. (Chenopodiaceae) at the roadsides in Warsaw, Poland
Autorzy:
Jarzyna, I.
Malecka, K.
Panufnik-Medrzycka, D.
Medrzycki, P.
Powiązania:
https://bibliotekanauki.pl/articles/57157.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
invasive plant
plant dynamics
occurrence
Tatarian orache
Atriplex tatarica
Chenopodiaceae
roadside
Warsaw city
urban roadside
abundance
halophytic plant
plant competition
annual plant
Polska
Opis:
Atriplex tatarica is an invasive annual plant from Central Asia. It is an early successional species of disturbed habitats, tolerant of a high content of NaCl. It grows also by the roadsides, on lawns by the streets and other places in cities sprayed with salt during snowfalls. The paper presents results of the analysis of abundance and patterns of occurrence of this invasive subhalophytic plant by the roadsides in the Warsaw city. We found that frequency and distribution of Atriplex tatarica increased significantly over the last few decades. The species grows chiefly along main streets which are de-iced. It forms monodominant patches of different length at the zone closest to the street verge. The NaCl concentration there is significantly higher than in the zones more distant from the street verge, although this parameter is very variable. The cover of other species increases with an increasing distance from the roadside verge.
Źródło:
Acta Societatis Botanicorum Poloniae; 2010, 79, 3
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wdrażanie "Programu rolnośrodowiskowego" II edycji na użytkach zielonych w powiecie Grajewo
Implementation of the II editionof Agro-environmental programme on grasslands of the Grajewo county
Autorzy:
Kamiński, J.
Powiązania:
https://bibliotekanauki.pl/articles/339598.pdf
Data publikacji:
2012
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
dolina Biebrzy
inwazyjne gatunki roślin
pakiety przyrodnicze programu rolnośrodowiskowego
siedliska łąkowe
walory przyrodnicze
biological packages of the agro-environmental programme
invasive plant species
meadow habitats
natural values
Biebrza River valley
Opis:
W pracy oceniono funkcjonowanie pakietów przyrodniczych "Programu rolnośrodowiskowego" II edycji na użytkach zielonych w części doliny Biebrzy na terenie powiatu Grajewo. W latach 2008-2011 działaniami rolnośrodowiskowymi objęto 2 427 ha trwałych użytków zielonych. Na przeważającej części tych użytków (83,4%) wdrażano pakiet 3. "Ekstensywna gospodarka na łąkach i pastwiskach". Mniejszy udział przypadał na pakiety, służące ochronie zagrożonych gatunków ptaków i siedlisk przyrodniczych - poza obszarami Natura 2000 (pakiet 4.), na obszarach Natura 2000 (pakiet 5.). Z pakietów tych najczęściej realizowano wariant 1. "Ochrona siedlisk lęgowych ptaków", rzadziej warianty siedliskowe: "Półnaturalne łąki wilgotne", "Szuwary wielkoturzycowe", "Mechowiska" i "Zmiennowilgotne łąki trzęślicowe". Ustalono, że wybierając określony pakiet lub wariant, rolnicy kierowali się głównie względami praktycznymi, takimi jak: złożoność procedur, możliwości dostosowania użytkowania do określonych wymogów, dostęp do ekspertów przyrodniczych oraz wysokość dopłat za działalność rolnośrodowiskową. Stan siedlisk łąkowych, objętych działalnością rolnośrodowiskową w ramach wariantów siedliskowych pakietów 4. i 5., był dość zróżnicowany i zależny głównie od historii użytkowania łąk w okresie poprzedzającym przystąpienie do Programu oraz warunków wilgotnościowych. Zróżnicowany był zwłaszcza udział niepożądanych w runi gatunków inwazyjnych, do których zaliczono nitrofilne ziołorośla, charakterystyczne dla klasy Artemisietea, trzcinę pospolitą (Phragmites Australis (Cav.) Trin. ex Steud.), siewki oraz podrosty drzew i krzewów. Fitocenozy bagienne, zaliczone do wariantu "Mechowiska" oraz szuwary wielkoturzycowe wykazały większą naturalną odporność na wkraczanie roślinności inwazyjnej niż zbiorowiska typowo łąkowe, zaliczone do wariantu "Zmiennowilgotne łąki trzęślicowe" i "Półnaturalne łąki wilgotne".
Functioning of biological packages of the II edition of "Agro-environmental programme" on grasslands in part of the Biebrza River valley in the Grajewo county was assessed in the paper. Agroenvironmental activities involved 2 427 ha of permanent grasslands in the years 2008-2011. On prevailing (83.4%) part of these grasslands package 3: "Extensive management of meadows and pastures" was implemented. Smaller share fell to packages devoted to the protection of endangered Bird species and natural habitats both outside (package 4) and in (package 5) the areas of Natura 2000. From among these packages the most frequently realised was variant 1 "Protection of breeding grounds of birds", less frequently were realised the habitat variants: "Semi-natural wet meadows", "Tal--sedge rushes" "Sphagnum bogs" and "Molinia meadows". It was found that when selecting a given package or variant, farmers were mainly guided by practical reasons such as: complexity of procedures, possibility of adaptation of land use to definite requirements, access to biology experts and the amount of subsidies to agro-environmental activity. The status of meadow habitats involved in agro-environmental activity within habitat variants of packages 4 and 5 was quite differentiated and depended mainly on the history of land use before the access to the programme and on moisture conditions. Particularly differentiated was the share of undesired invasive species like nitrophilous herbs of the class Artemisietea, the common reed (Phragmites australis (Cav.) Trin. ex Steud.), seedlings and young trees and shrubs. Bog communities classified to the variant "Sphagnum bogs" and tall-sedge rushes showed a higher natural resistance to invasive vegetation than typically meadow communities classified to variants "Molinion meadows" and "Semi-natural wet meadows".
Źródło:
Woda-Środowisko-Obszary Wiejskie; 2012, 12, 3; 77-91
1642-8145
Pojawia się w:
Woda-Środowisko-Obszary Wiejskie
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 45

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