Wyniki wyszukiwania - AGRO

1

Evaluation of the ecological status and diversity of macrophytes of drainage ditches threatened by a pesticide tomb

100%

Grzybowski M., Szarek J., Skibniewska K. A., Guziur J., Duriasz J.

Polish Journal of Natural Sciences

|

2010

|

tom 25

|

nr 3

The research was aimed at determining whether a pesticide tomb affects the ecological status of drainage ditches located in its vicinity as well as how it affects the diversity of the flora of the ditches and in which direction its effect on the surrounding environment is. In addition, the results of the study are a contribution to a comparative analysis of methods for macrophyte evaluation of watercourses used in Poland and to identify the possibilities of their application in investigations of artificial watercourses under the pressure of pesticides. Values of indices of the hydromorphological evaluation (HQA, HMS) were similar for all drainage ditches examined. This points to a negligible effect of the pesticide tomb on the hydromorphological characteristics of the analyzed watercourses. The pesticide tomb was found to affect the ecological status and floral diversity of the drainage ditches. The lowest values of macrophyte and diversity indices were recorded in the first and the second watercourse, whereas higher ones were in the third watercourse. Changes in the indices of ecological status and those of floral diversity observed in the watercourses examined show that the effect of the pesticide tomb on the surrounding ecosystem is consistent with topographic features and proceeds in a north-easterly direction. Both methods of the macrophyte evaluation of the ecological status of watercourses (MTR, MIR) yield different numeric values, yet their results are comparable in terms of the tendency of changes in the ecological status of the analyzed watercourses. In both methods, the highest rank was reported for the third watercourse. The MTR index diversifies the examined watercourses to a smaller extent than the MIR index. The MIR method is better under conditions of lowland Poland for the evaluation of the ecological status of artificial watercourses, as it enables stronger diversification of the ecological status of the watercourses examined due to a higher number of indicatory species.

2

The role of macrophytes in the diurnal distribution of crustacean zooplankton in a littoral of a shallow, macrophyte-dominated lake

100%

Bowszys M., Hirsz E., Paturej E.

Electronic Journal of Polish Agricultural Universities. Series Biology

|

2006

|

tom 09

|

nr 2

In a mesotrophic, shallow, macrophyte-dominated lake, stable plant cover can be attractive for zooplankton species being a grazer or a prey; dense submerged vegetation, Chara beds in particular, can offer a day-time refuge for cladocerans and some adult copepods. The former use this shelter also at night; on the contrary, young stages of Copepoda distinctively avoided both types of plant covered areas during the day and migrated towards open water. That might resulted from the increased grazing upon zooplankton. The pressure of predatory fish in open water probably forced young fish to seek for a shelter. As Chara beds are too dense to be penetrated, they preferred emergent plant zone. That might encourage copepods to undertake reversed DHM. The present study suggests a significant role of plant cover on diurnal zooplankton distribution. Dense charophyte patches could offer a daytime refuge for cladocerans, and some adult forms of Copepoda, while both groups of planktonic invertebrates did not take the advantage of emergent macrophytes cover to avoid fish predation.

3

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Spatial structure of macrophytes in the Rotcze Lake [Lublin Polesie Region]

100%

Sugier P., Lorens B.

Acta Agrophysica

|

2002

|

tom 67

4

Diversity of macrophytes in Lake Rotcze in the Leczna-Wlodawa Lakeland

86%

Sender J.

Teka Komisji Ochrony i Kształtowania Środowiska Przyrodniczego

|

2004

|

tom 01

5

Modelling values of river macrophyte metrics using artificial neural networks

86%

Gebler D., Kayzer D., Budka A., Szoszkiewicz K.

Infrastruktura i Ekologia Terenów Wiejskich

|

2012

|

nr 1/IV

The results of field research at 230 river sections located throughout Poland were used to examine the possibility of predicting values of macrophyte metrics of ecological status. Artificial intelligence methods such as artificial neural networks were used in the modelling. The physicochemical parameters of water (alkalinity, conductivity, nitrate and ammonium nitrogen, reactive and total phosphorus, and biochemical oxygen demand) were used as the explanatory (modelling) variables. The explained (modelled) parameters were the Polish MIR (Macrophyte Index for Rivers), the British MTR (Mean Trophic Rank) and the French IBMR (River Macrophytes Biological Index). The quality of the constructed models was assessed using the normalized root mean square error (NRMSE) and the r–Pearson’s linear correlation coefficient between variables modelled by the networks and calculated on the basis of the botanical research. These analyses demonstrated that the network modelling MIR values had the highest accuracy. The lowest prediction accuracy was obtained for MTR and IBMR indices. The differences between particular models are likely to result from better adjustment of the Polish method to local rivers (particularly in terms of indicator species used).

6

Evaluation of ecological state of small water reservoirs in the Bystrzyca River valley

86%

Sender J., Cianfaglione K., Kolejko M.

Teka Komisji Ochrony i Kształtowania Środowiska Przyrodniczego

|

2014

|

tom 11

7

The variability of macrophyte metrics used in river monitoring

86%

Szoszkiewicz K., Zbierska J., Staniszewski R., Jusik S.

Oceanological and Hydrobiological Studies

|

2009

|

tom 38

|

nr 4

117-126

8

Phytocenotic structure and physico-chemical properties of a small water body in agricultural landscape

86%

Sender J., Kulak A.

Acta Agrobotanica

|

2014

|

tom 67

|

nr 2

Small water bodies, until recently considered as wasteland, are an essential element of the so-called small water retention. Their main use can vary significantly, but they always play a positive role by increasing water resources and enhancing the natural values of the landscape. Moreover, by increasing biodiversity thanks to plants forming habitats for many species of flora and fauna, small water bodies act as a biofilter, improving water quality. But these small reservoirs belong to the groups of waters that are most exposed to damage, especially within the catchment area. Because of the invaluable role of small farmland water bodies, a study was undertaken to investigate their phytocenotic structure. In addition, an attempt was made to assess the level of threats and to indicate their role in the development of habitat conditions. The investigated reservoir was created in 2007. Before that time, it functioned as a part of the Zemborzycki reservoir, as they were close to each other. Almost the entire surrounding of this small reservoir consisted of farmland. In 2011 a revitalization project was carried out in the reservoir. Plants typical for wetland habitats were mainly introduced, while synanthropic vegetation was removed. Based on chemical and physical analyses, it can be concluded that the investigated reservoir serves as a natural biofilter thanks to the qualitative and quantitative changes in the structure of macrophytes. After the revitalization project, the investigated pond gained new aesthetic and ecological qualities.

9

Macrophyte biometric features as an indicator of the trophic status of small water bodies

86%

Nagengast B., Kuczynska-Kippen N.

Oceanological and Hydrobiological Studies

|

2015

|

tom 44

|

nr 1

10

An attempt to prepare macrophyte index for rivers for assessment watercourses in Kazakhstan

86%

Muratov R., Zhamangara A., Beisenova R., Akbayeva L., Szoszkiewicz K., Jusik S., Gebler D.

Meteorology Hydrology and Water Management. Research and Operational Applications

|

2015

|

tom 03

|

nr 2

Monitoring of water ecosystems in Kazakhstan is based generally on chemical indicators. Biological indicators, such as macroinvertebrates and a phytoplankton are rarely used. Sometimes some macrophyte species of are used for the assessment of water quality. The aim of the study was to analyse the possibilities of the introduction of the Polish monitoring system based on aquatic plants for rivers in Kazakhstan watercourses. The Polish method uses the Macrophyte Index for Rivers (MIR) and it has been prepared for the purposes of the EU Water Framework Directive. The systematic structure of Kazakhstan’s water plants were analyzed and compared with the macrophyte list of Poland. Flora of Kazakhstan was used as the main source of information and some recent publications were analyzed as well. It was found that the aquatic flora of Kazakhstan is rich and a total of 240 taxa of emergent and submerged plants are identified in the country. We have confirmed that a large number of aquatic plants recorded in Kazakhstan are recognized as bioindicators. The ecological tolerance and sensitivity of the identified bioindicators was analysed. A preliminary nine taxa with the the highest indicator weight in the MIR system (W = 3) were detected as the most sensitive indicators in Kazakhstan flora: Sciuro-hypnum plumosum, Scapania sp., Ceratphyllum demersum, C. submersum, Potamogeton lucens, P. praelongus, Lemna gibba, Menyanthes trifoliata and Acorus calamus. It was found that the MIR index can be applied in Kazakhstan, especially if we enrich the list of indicative species with the local macrophytes, which were not included in the original version. The list of potential indicator-species includes: Ranunculus altaicus, Ranunculus natans, Althenia filiformis, Nelumbo nucifera, Trapa incise which does not occur in Europe and Nuphar pumila, Nymphoides peltata, Ranunculus rionii, Rorippa palustris, Trapa natans, Utricularia intermedia, U. minor, Eleocharis acicularis and Vallisneria spiralis.

11

The diurnal distribution of cladocerans in a bed of Myriophyllum verticillatum in Lake Wielkowiejskie

86%

Basinska A., Cichocka M., Kuczynska-Kippen N.

Oceanological and Hydrobiological Studies

|

2009

|

tom 38

|

nr 1

103-111

12

An attempt to assess the impact of anthropopressure on the ecological state of urbanised watercourses of Krakow conurbation and the difficulties encountered

86%

Wardas M., Aleksander-Kwaterczak U., Jusik S., Hryc B., Zgola T., Sztuka M., Kaczmarska M., Mazurek M.

Journal of Elementology

|

2010

|

tom 15

|

nr 4

725-743

Rivers and streams in cities are treated as urbanised watercourses because of their significant transformation. Their load, channeling and incorporation into the water-sewerage infrastructure are often so considerable that such watercourses can hardly be recognised as an intrinsic component of surface waters. Anthropopressure, as reflected in quantitative and qualitative degradation caused by flow regulation and economic development in the drainage basin area, makes evaluation of the impact of human activity on the aquatic environment somewhat difficult. Based on the recommendations of the Water Framework Directive, an attempt has been made to assess the ecological state of selected tributaries of the Prądnik-Białucha River within the Krakow Conurbation. Aquatic environment sampling of the Sudół Dominikański (Rozrywka) watercourse was performed (September 2005) in order to determine some physicochemical, chemical and biological parameters, paying particular attention to macrophytes. The parameters measured on site: pH, electrolytic conductivity and Eh of water and bottom sediments, and sozological observations, were subjected to analysis. In the laboratory, concentrations of heavy metals, both in water and in solid particles (sediments and suspended matter) and anions in water were determined. The environmental state of the Sudół Dominikański watercourse was compared with that in the area of the Prądnik-Białucha River valley, for which an assessment had been conducted in the previous year (September 2004).

13

Long-term changes in the macrophytes of the Zaglebocze Lake in the Lublin Polesie

86%

Ciecierska H., Dziedzic J., Sender J.

Acta Agrophysica

|

2002

|

tom 67

14

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

86%

Grzybowski M.

Biological Bulletin of Poznań. Supplement

|

1996

|

tom 33

15

The impact of the architecture of macrophytes on the spatial structure of zooplankton of the Wielkowiejskie Lake

86%

Kuczynska-Kippen N., Nagengast B.

Roczniki Akademii Rolniczej w Poznaniu. Botanika

|

2003

|

tom 06

The analysis of the factors, connected with the different features of particular macrophyte species, determining the spatial distribution of zooplankton communities (rotifers and crustaceans) was purpose of this study. Particular zooplankton species reveal habitat preferences, which reflect variability in the spatial structure of particular macrophyte species, which is connected with different shape, length and width of stems.

16

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

86%

Endler Z., Grzybowski M.

Biological Bulletin of Poznań. Supplement

|

1996

|

tom 33

17

Relationship of Dreissena polymorpha [Pall.] to various species of submerged macrophytes

86%

Lewandowski K., Ozimek T.

Polskie Archiwum Hydrobiologii

|

1997

|

tom 44

|

nr 4

18

Response of periphyton community to salinity gradient in tropical estuary, Niger Delta

86%

Chindah A. C.

Polish Journal of Ecology

|

2004

|

tom 52

|

nr 1

Studies on periphyton of Crinium plants were conducted in the estuary (New Calabar River) of the Niger Delta at 4 different locations during the two major seasons (rainy and dry season). Periphyton samples were collected from an area (of 2 cm by 2 cm) in 3 sets of 3 replicates for biomasses (AFDW-ash free dry weight and chlorophyll a) and for numerical abundance. Physicochemical parameters such as temperature, pH, conductivity, hardness and salinity were also collected from the respective stations. Temperature was considerably uniform but conductivity, hardness and salinity showed increasing graduation in concentration down stream. A total of 110 periphyton species were recorded with diatoms constituting 54% of the occurring species followed by Euglenophyta (21%), Chlorophyta (17%), Cyanophyceae (6%) and Rhodophyta (1.8%). There were strong similarities in the values obtained for species richness, periphyton abundance, and chlorophyll a, AFDW (ash free dry weight) for wet and dry season indicating no seasonal influence. However, the periphyton abundance, chlorophyll a and ash free dry weight distribution suggested strongly influence by the salinity gradient. The values for periphyton abundance ranged from 2621 (±168.5) to 3452.8 (±715.9) indiv. cm⁻². In addition, the combined mean values for chlorophyll a, and ash free dry weight in the system were 8.443 ± 2.51 mg cm⁻² and 0.32 ± 0.07 g cm⁻², respectively.

19

Algae accompanying macrophytes in a hydroponic lagoon [third stage of sewage purification]

86%

Rakowska B., Sitkowska M.

Oceanological and Hydrobiological Studies

|

2005

|

tom 34

|

nr Suppl.3

20

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

86%

Grzybowski M.

Biological Bulletin of Poznań. Supplement

|

1996

|

tom 33

Ograniczanie wyników