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1

Elodeid species as nursery beds for the successful seed restoration of Vallisneria spiralis L.

100%
Cao J., Ruan H.
Polish Journal of Ecology
|
2015
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tom 63
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nr 1
Submerged aquatic vegetation (SAV) is often difficult to restore due to their low seedling survival rates. Therefore, we hypothesized that the elodeid macrophytes serve as effective “nursery” areas to promote success for seedlings of other SAV. However, the high density of the elodeid community may inhibit the establishment of other SAV. An experiment was conducted to explore this “nursery effect” as a restoration approach to increase the success of seed restoration. Two elodeid species were pre-planted into mesocosms to create three levels of “nursery beds” i.e., bare, sparse (approx. 100 g m⁻²) and dense (approx. 200 g m⁻²). Seeds of Vallisneria spiralis were then placed into these beds to test the seed germination and growth of V. spiralis seedlings. After three months, seed germination was lower in the bare treatment than in the sparse and dense treatments. The growth of V. spiralis seedlings was greater in the sparse treatment than in the bare and dense treatments. These results revealed that the established elodeid bed had a positive effect on the seed restoration of V. spiralis but that the restoration efficiency was significantly reduced by the high-density cover of the elodeid community.
2

The concentration of mercury in the aquatic plants in Wadag Lake on Olstynian Lakeland

100%
Grzybowski M.
Biological Bulletin of Poznań. Supplement
|
1996
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tom 33
3

The application of canonical correspondence analysis to the indication of the impact of the environmental factors on the distribution of aquatic plant communities

100%
Szoszkiewicz K., Kayzer D., Dawson H.
Roczniki Akademii Rolniczej w Poznaniu. Rolnictwo
|
2000
|
tom 59
4

The concentration of Fe in the aquatic plants in Wadag Lake on Olstynian Lakeland

100%
Grzybowski M.
Biological Bulletin of Poznań. Supplement
|
1996
|
tom 33
5

The concentration of Cd in the aquatic plants in Wadag Lake on Olstynian Lakeland

100%
Endler Z., Grzybowski M.
Biological Bulletin of Poznań. Supplement
|
1996
|
tom 33
6

The relation between charophytes and habitat differentiation in temperate lowland lakes

84%
Pukacz A., Pelechaty M., Pelechata A.
Polish Journal of Ecology
|
2013
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tom 61
|
nr 1
Interdisciplinary investigations of 39 lakes of the Lubuskie Lakeland (mid-Western Poland) were undertaken in the vegetation seasons 2002–2009. The aim of presented study was to characterize the significance of charophytes as indicators of habitat differentiation of lakes using the number of species, number of communities and the percentage share in the phytolittoral area. Each lake was characterized based on the results of macrophyte vegetation, vegetation depth extent, pelagic phytoplankton biomass, lakes area, max. depth, SD visibility, pH, conductivity, O₂, total hardness, Ca, Mg, PO₄, TP, NH₄, NO₃, NO₂, N org., TN. The statistical analyses (PCA), revealed that the investigated lakes were differentiated according to the basic morphometrical and physicochemical parameters and that the differentiation was reflected in the percentage share of charophytes in phytolittoral (in general – the bigger, deeper and more clear water were the lakes, the greater part of phytolittoral was covered by charophytes). Using simple cluster analysis based on the number of different types of macrophyte communities (helophytes, elodeids, nymphaeids and charophytes) two distinct groups of lakes were distinguished. Charophyte communities were at most responsible for obtained differentiation (one group with 0 or 1 and second with 1–6 charophyte communities). The distinguished groups of lakes differed significantly as regards 12, out of all 18 considered parameters. The greatest differences were evidenced for area, max. depth, SD visibility, Ca, Mg, NH₄, NO₃, phytoplankton biomass and vegetation depth extent. Similar analyses were made for the number of charophyte species, for which the lakes were divided into four groups (0– 1, 2–3, 4–5 and 6–7 charophyte species per lake). In this case 11 parameters significantly differed between distinguished groups of lakes, showing, that better habitat conditions were in the lakes where more charophyte species were stated. The obtained results revealed that all analyzed charophyte indicators (the number of species, number of communities as well as the percentage share in the phytolittoral area) very clearly reflect habitat variation and water quality of lakes and thus may be used as valuable bioindicators of lakes condition.
7

Diversity and distribution of the vegetation in a water body surrounded by earth dyke

84%
Ejankowski W., Sojka S.
Teka Komisji Ochrony i Kształtowania Środowiska Przyrodniczego
|
2013
|
tom 10
8

Effect of buffer zone structure on diversity of aquatic vegetation in farmland water bodies

84%
Kujawa K., Arczynska-Chudy E., Janku K., Mana M.
Polish Journal of Ecology
|
2020
|
tom 68
|
nr 4
9
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Primary productivity of Kumshi reservoir, Kalaburagi District, Karnataka

84%
Fameeda S., Rajashekhar M., Parveen Z., Vijaykumar K.
International Letters of Natural Sciences
|
2015
|
tom 44
In the present investigation, primary productivity of Kumshi reservoir of Kalburagi District has been studied for the period of two years (2012-2014). The results reveals that, gross primary productivity of Kumshi reservoir followed an increasing trend through the northeast monsoon season towards summer season, whereas, net primary productivity of Kumshi reservoir is followed a more or less similar trend of increasing towards northeast monsoon season and summer season, while community respiration of reservoir also followed a similar trend of oscillation increasing trend towards summer and northeast monsoon season during the study period.
10

Vegetation as an indicator of trophic status of running waters based on rivers of Great Britain and Northern Ireland

84%
Szoszkiewicz K.
Roczniki Akademii Rolniczej w Poznaniu. Rozprawy Naukowe
|
2004
|
nr 349
11

The influence of co-occurring vegetation and habitat variables on distribution of rare charophyte species Lychnothamnus barbatus (Meyen) in lakes of Western Poland

67%
Gabka M., Owsianny P. M., Burchardt L.
Polish Journal of Ecology
|
2010
|
tom 58
|
nr 1
At present Lychnothamnus barbatus (Meyen) Leonhardi belongs to the rarest species of charophytes in the world. In Europe it is classified as threatened with extinction. The problem of extinction of this species is intriguing, in particular in the context of its widespread occurrence in Europe and Asia till the last decade of the 20th century. Records of L. barbatus from Wielkopolska region (Western Poland) are know from 15 lakes. The most of them was stated in 19th and on beginning of 20th centuries. Now, this species is growing in 6 lakes, from among 2 sites are new. This study was undertaken to a) determine the abundance of L. barbatus and the co-occurring plant species at different sites in lakes, b) determine the most important ecological parameters controlling the structure communities with L. barbatus co-occurring and quantitative responses of this species. In 7 lakes (area 5.5-197 ha, depth max. 7.8– 38 m, trophic state: meso-eutrophic) in western Poland the species composition and coverage of vegetation were studied at the 23 plots with L. barbatus occurrence in relation to the measured variables. Seventeen environmental parameters were measured including: depth of water, pH, conductivity, SO₄²⁻, NH₄⁺, NO₃⁻, PO₄³⁻, Na⁺, K⁺, Ca²⁺, Mg²⁺, chlorophyll a, Secchi disc visibility, colour, O₂ dissolved, saturation, total Fe during the period July–September. The DCA and CCA analyses were used to assess the relation between vegetation parameters and environmental variables. L. barbatus preferred the water rich in Ca⁺, Mg²⁺ and SO₄²⁻ and with high concentrations of nutrients, especially NH₄⁺ and PO₄³⁻, and moderate values of electrolytic conductivity. In the studied lakes, L. barbatus occupied the separate niche. This species formed the communities in very shallow marginal zones of lakes (0.4–1.5 m) with other macrophytes like: Chara vulgaris, C. tomentosa, Potamogeton ´ nitens, and monospecific stands on margins of steep lake slopes (4–6 m) with Chara globularis fo. hedwigii and Nitella mucronata. The process of extinction of this species seems to be related with increasing turbidity related in turn to algal blooming in lakes and with the spatial competition of vascular macrophytes, especially Ceratophyllum demersum.
12
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Revision of Nymphaea candida range - new data on the distribution and habitat preferences of the species in southern Poland

67%
Nowak A., Nobis M., Dajdok Z., Zalewska-Galosz J., Nowak S., Nobis A., Czerniawska-Kusza I., Kozak M., Stebel A., Bula R., Sugier P., Szlachetka A., Bena W., Trojecka A., Piwowarczyk R., Adamiec A., Krawczyk R.
Acta Societatis Botanicorum Poloniae
|
2010
|
tom 79
|
nr 4
The paper presents results of geobotanical and taxonomic studies on the distribution and habitat requirements of Nymphaea candida in southern Poland. The researches were conducted in southern Poland in 2003-2009, in the provinces of Lower Silesia, Lublin, Małopolska, Opole, Silesian province as well as, in southern parts of Mazowieckie and Lubuskie. Flowers, leaves and fruits of Nymphaea species were collected from 27 locations. Altogether pollens from 73 populations of N. candida and 18 of N. alba from all the researched area were measured. The trophic level of an ecosystem was evaluated according to the results of the total nitrogen, total phosphorus, chlorophyll a, transparency and biological parameters. As the result of the studies of more than 200 water bodies, 57 localities of N. candida were documented within the investigation area. The populations of N. candida occupy mid-forest water bodies and river ox-bow lakes. A significant number of populations was also found in artificial reservoirs - fish ponds. The most suitable habitat conditions for N. candida occur in shallow waters in the shore zone with the amplitude of the water column vary from 0.5 to 2 m. Regarding the trophy level, N. candida occupies different habitats, mainly mesotrophic and also eutrophic with high content of organic matters. Considering the 15 checked morphological parameters, especially the stigma diameter, the number of carpellary teeth, flower and pollen diameters, the found and collected specimens of N. candida significantly differ from N. alba. The study confirms that N. candida ocurrs in whole lowland Poland without any regional distribution gaps. According to the IUCN guidelines to species assessment the data gathered during the presented study do not allow to classify N. candida as a vulnerable species in Poland. Still existing populations for more than 150 years, numerous stable locations, abundant populations, a habitat accessibility, a biotope extent, an ecological amplitude against the trophy level and direct human impacts suggest, that the species should be regarded as a least concern (LC) taxon.
13
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Distribution patterns, floristic structure and habitat requirements of the alpine river plant community Stuckenietum amblyphyllae ass. nova (Potametea) in the Pamir Alai Mountains (Tajikistan)

67%
Nowak A. S., Nobis M.
Acta Societatis Botanicorum Poloniae
|
2012
|
tom 81
|
nr 2
This paper discusses the floristic structure, distribution and habitat requirements of a new aquatic syntaxon, Stuckenietum amblyphyllae ass. nova. Patches of the Stuckenietum amblyphyllae association occur in the Pamir Alai Mountains in Middle Asia (Tajikistan). The biotope of this community represent high mountain rivers and ponds at the bottom of glacial river valleys situated at elevations between 1900 and 3800 m. Patches of the Stuckenietum amblyphyllae association are characterised by a clear predominance of the typical species, i.e. Stuckenia amblyphylla, which occupies an aerial extent of between near 40 up to 90% of the surface studied. Patches of the community are poor in species, comprising a maximum of five taxa. Among associated species mainly rush, aquatic, meadow and marsh taxa have been noted. The Stuckenietum amblyphyllae community prefers cold, open, alkaline waters with medium flow-rate, ranging in depth from 15 to 75 cm. It is also, but rarely, found in the mountain ponds. Together with the Stuckenia filiformis community it designates in the Pamir Alai Mountains the upper limit of aquatic vegetation.
14

Adapting floodplain connectivity conditions - a prerequisite for sustaining aquatic macrophyte diversity in the UNESCO Biosphere Reserve Lobau (Austria)

67%
Barta V., Schmidt-Mumm U., Janauer G. A.
International Journal of Ecohydrology and Hydrobiology
|
2009
|
tom 09
|
nr 1
The UNESCO Biosphere Reserve Lobau (Austria), established in 1977 within the city limits of Vienna, is part of the Danube National Park and one of the ecologically richest parts of the Danube River Corridor. Hardly noticed by diverging stakeholder interests the smaller aquatic habitats in the floodplain area are acutely threatened by wetland ageing and terrestrialisation processes. In 2007 an aquatic plant survey was carried out in the water bodies of the active floodplain on the left bank of the Danube main river channel as well as in the semi-separated water bodies of the Lobau. Results clearly show the impact of through-flow on aquatic plant species composition and abundance, as these metrics are significantly higher in the semiseparated location. Suitable water regime for all sensitive aquatic plants is an essential prerequisite for sustaining aquatic macrophyte diversity in the Lobau Biosphere Reserve, and could provide an ecohydrological basis for rehabilitation activities in other regulated river floodplains located in cultivated landscapes.
15

Significance of current velocity gradients for distribution patterns of charophytes versus mosses and vascular plant communities in a lowland stream

67%
Jakubas E., Gabka M.
Oceanological and Hydrobiological Studies
|
2015
|
tom 44
|
nr 2
16

Diversification of aquatic and rush vegetation biomass in the Lyna River within the town of Olsztyn

67%
Endler Z., Duriasz J., Podbielska K.
Natural Sciences
|
1998
|
tom 01
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