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Kinetics of growth of Japanese knotweed (Polygonum cuspidatum Siebold and Zucc.)

100%

Gregorczyk A., Fiejtek A., Wereszczaka J.

Colloquium Biometricum

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2009

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tom 39

2

Heavy metals content in the Fallopia genus in Central European Cities - study from Wroclaw and Prague

84%

Soltysiak J., Berchova-Bimova K., Vach M., Brej T.

Acta Botanica Silesiaca

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2011

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tom 07

In this study highly invasive plant species from the Fallopia genus (Fallopia japonica and Fallopia ×bohemica) were investigated for their ability to accumulate heavy metals. Samples were collected from two large cities: Wroclaw and Prague. The content of Cr, Cd, Fe, Pb and Zn in soils covered by Knotweed taxa was determined. Afterwards, plant samples were collected from the places where the largest amounts of toxic metals were found. Rhizomes, roots and leaves of chosen samples of both Fallopia taxa have been treated separately, as different parts of the plant accumulate metals. The investigation has shown that in urban conditions Knotweed taxa spread on soils with higher than natural concentration of toxic metals. Only the chromium amount was similar to the normal range. In both species heavy metals were accumulated mainly in roots and rhizomes, but their concentration was significantly higher in Fallopia japonica underground parts than in the hybrid. There were no differences between species with metals content in the aboveground parts of the plant body. The results suggest that special attention should be paid to Cr. In all analyzed plants, high chromium content was found, while the Cr amount in soils samples was close to natural.

3

The importance of land use type in Fallopia (Reynoutria) japonica invasion in the urban environment

84%

Chmura D., Nejfeld P., Borowska M., Wozniak G., Nowak T., Tokarska-Guzik B.

Polish Journal of Ecology

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2013

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tom 61

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nr 2

In total 273 stands of the invasive species Fallopia (Reynoutria) japonica in Oświęcim valley (southern Poland) were examined, in terms of cover, area, abundance, height and width of shoots, and presence of coexisting species. F. japonica occurred more frequently in wastelands and was the rarest in forests. Statistical analyses revealed some significant differences among habitats with particular traits. The most abundant populations, occupying the largest area, were recorded in wetlands and along railway lines. Populations were very diverse in terms of their percentage of flowering shoots within a particular type of habitat, however, the highest percentage was again observed in wetlands and along railways. In forests, gardens and in wastelands the contribution of flowering shoots was lower. The presence of accompanying species in the studied populations was generally low, most frequently stands of F. japonica were mono-specific with a slightly higher cover of accompanying species being recorded in F. japonica populations in forests. The highest proportion of the tallest shoots within a patch of F. japonica was observed in wetlands, while the lowest was in wastelands and in railways. The individuals with the thickest shoots were present in forests and wetlands and the thinnest in wastelands. Despite the simplified nature of the data collection the study demonstrated that F. japonica is more vigorous and forms larger stands occupying larger areas in some of the analyzed habitats. The study showed that in manmade habitats the considered species has favourable conditions for its development and further spread and this is of concern to conservationists and land managers as it can pose a threat to native biodiversity.

4

Corticular photosynthesis of the herbaceous plants: Japanese knotweed [Reynoutria japonica] and topinambur [Helianthus tuberosus]

67%

Kocurek M., Pilarski J.

Biological Letters

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2005

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tom 42

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nr 2 Spec.Vol.

5

Stanowisko Fallopia japonica (Houtt.) Ronse Decr. w rejonie Tworzyjanowa (Dolny Śląsk)

59%

Sliwinski M., Czarniecka M.

Acta Botanica Silesiaca

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2011

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tom 07

The expansion of invasive plants along the transport routes is a problem especially noticeable in the regional scale. Even if the sites of species result from direct human intervention, it is difficult to identify the responsible person. One of new sites of Fallopia japonica in Lower Silesia was established as a result of road reparation works.

6

Występowanie Reynoutria japonica Houtt., R. sachalinensis (F. Schmidt) Nakai i Impatiens glandulifera Royle wzdłuż strumieni Gór Sowich w okolicach Bielawy

51%

Sliwinski M.

Acta Botanica Silesiaca

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2009

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tom 04

River valleys of the Sowie Mts and the Dzierżoniowska Basin, due to human long-term agricultural activity, were heavily transformed. Disadvantageous changes of river systems simplified penetration by invasive species. They make a serious problem to plant diversity, are burdensome to citizens, increase the threat of flooding and lower the beauty of landscape. In the middle 70-ties of 20th century, knotweed and Himalayan balsam were noticed in the Sowie Mts. In 2006 field research enabled to estimate the condition of their populations and regularity of their occurrence along the rivers near Bielawa.

7

Wybrane antropofity brzegów Bystrzycy na odcinku Krasków-Jarnołtów

51%

Sliwinski M.

Acta Botanica Silesiaca

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2008

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tom 03

Valleys of large rivers, like Bystrzyca which is one of the largest Odra river tributaries, are prone to invasions of alien plant species. The Bystrzyca river valley in Krasków-Jarnołtów section is a part of a protected landscape area but it is relatively modified by human activity. Reinforcement of the river bed may have caused the appearance of invasive species, while the process of their penetration to protected areas is a serious threat to natural plant cover. The article contains basic data concerning synanthropisation and distribution of five invasive species (Impatiens parviflora, Reynoutria japonica, Reynoutria sachalinensis, Solidago canadensis, Solidago gigantea) found within the investigated area.

8

Wpływ nadmiernego oświetlenia na zawartości CO2 i O2 w kanałach rdzeniowych rdestowca ostrokończystego (Reynoutria japonica HOUTT.)

51%

Kocurek M., Tokarz K., Pilarski J.

Zeszyty Problemowe Postępów Nauk Rolniczych

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2010

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tom 545

Do doświadczeń wybrano rdestowca ostrokończystego (Reynoutria japonica Houtt.) którego łodygi posiadają obszerne kanały rdzeniowe. Rośliny uprawiane były w warunkach naturalnych. W warunkach naturalnych łodygi rdestowca są ocienione przez liście i rzadko są narażone na bezpośrednie oświetlenie promieniowaniem słonecznym. Badania wykazały, że w kanałach rdzeniowych rdestowa w ciągu nocy stężenie CO2 może przekraczać 10%, a ciągu dnia następuje zmniejszanie tego stężenia nawet poniżej 1%. Zmianom stężenia zawartości CO2 towarzyszą podobne wielkością lecz przeciwnie skierowane zmiany zawartości O2: zmniejszanie się jego zawartości w nocy i zwiększanie w ciągu dnia. Wprowadzenie nadmiernego oświetlenia łodyg doprowadziło do zmian zawartości CO2 i O2. Ze wzrostem intensywności oświetlenia szybciej malała zawartość CO2 i szybciej wzrastała zawartość tlenu w kanałach rdzeniowych. Zmiana warunków świetlnych ułatwiała reasymilację CO2 zgromadzonego w godzinach nocnych przez łodygę. W ciemności uwalnianie tego gazu w kanałach rdzeniowych wynosi około 0,6 µmol CO2·m-2·s-1, a świetlny punkt kompensacyjny reasymilacji uzyskiwano w intensywności napromieniowania około 80 µmol·m-2·s-1. Natomiast świetlne wysycenie reasymilacji notowano przy napromieniowaniu około 850 µmol·m-2·s-1 z intensywnością reasymilacji wynoszącą około 0,9 µmol CO2·m-2·s-1. Badania wykazały że nienaturalnie wysokie dawki promieniowania nie są czynnikiem stresowym dla łodyg rdestowca a wręcz przyczyniają się do szybszego zużywania CO2 i nagromadzania O2.

9

Kolanka i gatki

43%

Mularczyk M.

Kwietnik

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2002

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nr 01

47-50

Ograniczanie wyników

Kinetics of growth of Japanese knotweed (Polygonum cuspidatum Siebold and Zucc.)

Heavy metals content in the Fallopia genus in Central European Cities - study from Wroclaw and Prague

The importance of land use type in Fallopia (Reynoutria) japonica invasion in the urban environment

Corticular photosynthesis of the herbaceous plants: Japanese knotweed [Reynoutria japonica] and topinambur [Helianthus tuberosus]

Stanowisko Fallopia japonica (Houtt.) Ronse Decr. w rejonie Tworzyjanowa (Dolny Śląsk)

Występowanie Reynoutria japonica Houtt., R. sachalinensis (F. Schmidt) Nakai i Impatiens glandulifera Royle wzdłuż strumieni Gór Sowich w okolicach Bielawy

Wybrane antropofity brzegów Bystrzycy na odcinku Krasków-Jarnołtów

Wpływ nadmiernego oświetlenia na zawartości CO2 i O2 w kanałach rdzeniowych rdestowca ostrokończystego (Reynoutria japonica HOUTT.)

Kolanka i gatki