Wyniki wyszukiwania

1

The origin of humic substances and their role in the aquatic environment

100%

Szpakowska B.

International Journal of Ecohydrology and Hydrobiology

|

2003

|

tom 03

|

nr 2

165-172

2

Kurs na temat ekosystemów lądowych (Saragossa, 18 V-12 VI 1988 r.)

75%

Szpakowska B.

Wiadomości Ekologiczne

|

1989

|

tom 35

|

nr 3-4

3

Weryfikacja nowej metody oceny waloryzacji krajobrazu na przykładzie wybranego fragmentu Drawskiego Parku Krajobrazowego

63%

Dudzinska A., Szpakowska B.

Nauka Przyroda Technologie. Uniwersytet Przyrodniczy w Poznaniu

|

2014

|

tom 08

|

nr 3

4

Przyozdabiamy taras

63%

Dudzinska A., Szpakowska B.

Działkowiec

|

2008

|

nr 03

33-35

5

Ocena wartosci rekreacyjnej wybranych zbiornikow miejskich a funkcjonowanie strefy litoralnej

63%

Swierk D., Szpakowska B.

Nauka Przyroda Technologie. Uniwersytet Przyrodniczy w Poznaniu

|

2009

|

tom 03

|

nr 1

6

Rozpuszczona materia organiczna a formy chemiczne metali ciezkich w wodach zlewni rolniczych

63%

Karlik B., Szpakowska B.

Roczniki Akademii Rolniczej w Poznaniu. Melioracje i Inżynieria Środowiska

|

1997

|

tom 19

|

nr 1

39-46

7

Method of landscape evaluation and elaboration of protection for individual elements of the rural space of the Drawski Landscape Park

63%

Dudzinska A., Szpakowska B.

Nauka Przyroda Technologie. Uniwersytet Przyrodniczy w Poznaniu

|

2014

|

tom 08

|

nr 2

8

Migration of dissolved humic substances in agricultural landscape

63%

Szpakowska B., Zyczynska-Baloniak I.

Polish Journal of Soil Science

|

1996

|

tom 29

|

nr 2

139-147

9

Rekreacyjne znaczenie Zbiornika Maltanskiego i problemy zwiazane z jego uzytkowaniem

63%

Szczepanska M., Szpakowska B.

Nauka Przyroda Technologie. Uniwersytet Przyrodniczy w Poznaniu

|

2009

|

tom 03

|

nr 1

10

Assessment of occurrence microphytes and trophic status of a small water body in the Wielkopolska Region (Western Poland)

63%

Pajchrowska M., Szpakowska B.

Polish Journal of Natural Sciences

|

2014

|

tom 29

|

nr 1

The paper presents results of studies on microphytes found in a small and shallow water body located in the village of Drwęsa in the Dopiewo community (near Poznań). The aim of investigations conducted in 2011 was to determine the taxonomic composition, abundance and biomass of microphytes, the amount of seston and selected environmental factors. The greatest species richness was observed for green algae and diatoms, while the total abundance of microphytes was usually moderate. Flagellates predominated, mainly chrysophytes, dinoflagellates and cryptophytes. Maximum abundance were recorded in spring and their frequent dips in summer and autumn. Microphyte biomass estimated by the concentration of chlorophyll α was generally high and significantly correlated with the amount of seston. Indicator species comprised 35% of the microphytes taxa and eutrophic indicator species predominat. The structure of microphytes indicated mesotrophy of the water body, while the concentrations of chlorophyll α and seston showed eutrophy.

11

Ocena walorow krajobrazowych okolicy Spyczynej Gory

63%

Dudzinska A., Szpakowska B.

Nauka Przyroda Technologie. Uniwersytet Przyrodniczy w Poznaniu

|

2008

|

tom 02

|

nr 4

12

Proby rekultywacji krajobrazu dla potrzeb turystyki na przykladzie Legnicko-Glogowskiego Okregu Miedziowego

63%

Rachwal B., Szpakowska B.

Nauka Przyroda Technologie. Uniwersytet Przyrodniczy w Poznaniu

|

2009

|

tom 03

|

nr 1

13

Occurrence of cadmium and its water migration in agricultural catchment basin

63%

Szpakowska B., Karlik B.

Polish Journal of Soil Science

|

1999

|

tom 32

|

nr 2

63-69

14

Transport fosforu w wodach wybranych rzek Wielkopolski

63%

Karlik B., Szpakowska B.

Roczniki Akademii Rolniczej w Poznaniu. Melioracje i Inżynieria Środowiska

|

2004

|

tom 25

219-224

15

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Sprawozdanie z konferencji na temat: "Przyrodnicze podstawy rozwoju rolnictwa i gospodarowania na obszarach wiejskich" (Poznań, 10-11.III.1983 r.)

63%

Szpakowska B., Karlik B.

Postępy Nauk Rolniczych

|

1983

|

tom 30

|

nr 5

16

Wplyw struktury zlewni rolniczej na wystepowanie skladnikow chemicznych w wodach

63%

Szpakowska B., Karlik B.

Roczniki Akademii Rolniczej w Poznaniu. Melioracje i Inżynieria Środowiska

|

2002

|

nr 23

467-475

17

Metale ciezkie i ich specjacja w wodach srodowiska rolniczego

63%

Szpakowska B., Karlik B.

Postępy Nauk Rolniczych

|

1996

|

tom 43

|

nr 1

83-90

Heavy metals migrate in thc environment in different forms (free ions, labile inorganic and organic complexes). Most of the heavy metals create a potential threat to organisms. Their harmfulness is connected not only with biological, biochemical properties, but also depends on forms in which heavy metals appear in the environment, so-called speciation. The chemical term speciation has several meanings and can be defined as analysis, distribution, bioavailability and transformation. In the presented paper the occurrence of heavy metals and possibilities of their determination are discussed. Using anodic stripping voltammetry (DPASV) it was found that 1 gram of humic substances (HS) dissolved in surface water bound to 13.7 μg Cu/g HS and 7.1 μg Pb/g HS. Stronger complexing properties were observed for HS isolated from groundwater: 27 μg/g HS in the case of Cu and 46 μg/g HS for Pb.

18

The role of biogeochemical barriers in water migration of humic substances

63%

Szpakowska B., Zyczynska-Baloniak I.

Polish Journal of Environmental Studies

|

1994

|

tom 03

|

nr 2

This paper discusses research into the seasonal variability of concentrations of total carbon (TC), dissolved organic substances (DOC), and humic substances (HS) migrating with ground water from cultivated fields. Moreover, the effects of biogeochemical barriers such as meadow belts, shelterbelts and small field ponds on limiting migration of the chemical compounds in the agricultural landscape were analysed. It was found that ground water of the studied area contains high concentrations of all examined elements averaging from 44.7 to 73.1 mg/1 of TC, from 224 to 43.6 mg/1 of DOC, and from 6.84 to 20.3 mg/1 HS. It was shown that a 20 m wide meadow belt reduces concentration of TC in ground water by 29%, that of DOC by 44%, and HS by 52%. Moreover, it was found that surface waters of the studied area also contain high concentrations of TC (mean from 65.7 to 78.3 mg/1), DOC (47.8 mg/1), and HS (from 21.3 to 34.0 mg/1). The study results show that such biogeochemical barriers as meadow belts and small field ponds effectively limit the spread of organic compounds migrating with ground water through agricultural landscapes.

19

Labile organic matter and heavy metals in waters of agricultural landscape

63%

Karlik B., Szpakowska B.

Polish Journal of Environmental Studies

|

2001

|

tom 10

|

nr 2

This paper describes some characteristics and properties of low molecular compounds - labile fraction, isolated from dissolved organic matter in ground and surface waters on arable land. The differences in composition of labile fraction using IR spectroscopy were studied. Also, the ability of labile fraction to heavy metals complexation was analyzed.

20

Chemical forms of heavy metals in agricultural landscape water

63%

Szpakowska B., Karlik B.

Polish Journal of Environmental Studies

|

1996

|

tom 05

|

nr 6

A procedure for determining the chemical forms of zinc, cadmium, lead and copper in surface and ground waters located in Agricultural Landscape Park (ALP) is outlined. Heavy metals were differentiated into ionic, labile forms and moreover on stable complexes and chelates. In the studied waters, concentrations of ionic forms were 17.9-45.2 μgZn/l, 0.003-0.038 μgCd/l, 0.28-6.29 μgPb/I. Labile complexes in these waters constituted: 3.8-24.1% for Zn, 25.9-35.8% for Cd and 24.3-57.8% for Pb of the total metal concentration. Copper concentration in studied melioration ditch amounted to 24.4 μg/l. The ionic and colloidal forms constituted 39.1% and 24.8% of its total concentration, respectively.

Ograniczanie wyników

The origin of humic substances and their role in the aquatic environment

Kurs na temat ekosystemów lądowych (Saragossa, 18 V-12 VI 1988 r.)

Weryfikacja nowej metody oceny waloryzacji krajobrazu na przykładzie wybranego fragmentu Drawskiego Parku Krajobrazowego

Przyozdabiamy taras

Ocena wartosci rekreacyjnej wybranych zbiornikow miejskich a funkcjonowanie strefy litoralnej

Rozpuszczona materia organiczna a formy chemiczne metali ciezkich w wodach zlewni rolniczych

Method of landscape evaluation and elaboration of protection for individual elements of the rural space of the Drawski Landscape Park

Migration of dissolved humic substances in agricultural landscape

Rekreacyjne znaczenie Zbiornika Maltanskiego i problemy zwiazane z jego uzytkowaniem

Assessment of occurrence microphytes and trophic status of a small water body in the Wielkopolska Region (Western Poland)

Ocena walorow krajobrazowych okolicy Spyczynej Gory

Proby rekultywacji krajobrazu dla potrzeb turystyki na przykladzie Legnicko-Glogowskiego Okregu Miedziowego

Occurrence of cadmium and its water migration in agricultural catchment basin

Transport fosforu w wodach wybranych rzek Wielkopolski

Sprawozdanie z konferencji na temat: "Przyrodnicze podstawy rozwoju rolnictwa i gospodarowania na obszarach wiejskich" (Poznań, 10-11.III.1983 r.)

Wplyw struktury zlewni rolniczej na wystepowanie skladnikow chemicznych w wodach

Metale ciezkie i ich specjacja w wodach srodowiska rolniczego

The role of biogeochemical barriers in water migration of humic substances

Labile organic matter and heavy metals in waters of agricultural landscape

Chemical forms of heavy metals in agricultural landscape water