Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 24

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1

Effect of industrial dusts on the development and activity of micro-organisms in soils of the Niepołomice Forest (southern Poland)

100%
Starzecka A.
Acta Hydrobiologica
|
1989
|
tom 31
|
nr 3-4
2

A regulated river ecosystem in a polluted section of the Uppter Vistula. 4. Biomass and bacterial decomposition

100%
Starzecka A.
Acta Hydrobiologica
|
1988
|
tom 30
|
nr 1-2
3

Okreslenie jakosci wod gornego i srodkowego biegu Wisly w oparciu o wskazniki chemiczne i bakteriologiczne

100%
Starzecka A.
Działalność Naukowa PAN. Wybrane Zagadnienia
|
1998
|
tom 05
92-94
4

Bakteriologiczna charakterystyka wod zlewni gornego biegu Wisly

100%
Starzecka A.
Postępy Mikrobiologii
|
1997
|
tom 36
|
nr 1
37-51
5

Upper Vistula River: response of aquatic communities to pollution and impoundment. IV. Chemical and bacteriological indices of water quality

100%
Starzecka A.
Polish Journal of Ecology
|
2002
|
tom 50
|
nr 2
The water quality and its changes in Upper Vistula River on the sector between 10.9 and 336.7 km of its course were carried out in annual cycle in the years 1997-1998. The classification of water comprised four classes of purity (I-IV) and based on the 5 biological and 5 chemical features of water. Particular classes were characterized by numerical taxonomic value of pollution (NTVP): 1.0-1.5 - class I, very pure water; 1.5-2.5 - class II, relatively pure water; 2.5-3.5 - class III, polluted water; 315-4.0 - class IV, very heavily polluted water. On the investigated section of the Vistula River three stretches might he distinguished: the first one between 10.9 and 66.2 km of the river course; the second from 115.6 to 248.2 km and the third at 336.7 km of the river course. On the basis of the mean annual values of biological and chemical features together, relatively pure water (II class purity) with NTVP ranging from 1.87 to 2.37 was noticed on the first investigated river stretch. The greatest pollution was shown on the second stretch, where NTVP ranged from 2.56 to 2.82 which corresponded to III class of water purity. On the third stretch the water was relatively pure (II class of purity) with NTVP 2.32.
6

The effect of intensive fertilization of a bankside meadow on the activity of plankton bacteria in the River Nida(Southern Poland)

63%
Starzecka A., Mazurkiewicz G.
Acta Hydrobiologica
|
1987
|
tom 29
|
nr 1
7

The production and destruction of organic matter in the water and surface layer of bottom sediments on the stream - estuary -Dobczyce Dam Reservoir line [ southern Poland ]

63%
Bednarz T., Starzecka A.
Acta Hydrobiologica
|
1993
|
tom 35
|
nr 2
109-119
The values of biological parameters calculated per 1 g C-org. were generally 0.5 to 2 orders of magnitude higher in the water than in the sediments. The exceptions were biomass (Ba), production (P), and respiration (Ra) of algae, approximately 0.5 to 1 order of magnitude higher in the sediments of the stream and respiration of bacteria (Rb) to their biomass (Bb) 0.7 order of magnitude higher in sediments of the dam reservoir.
8

Effect of fertilization on biological activity of soils contaminated with cadmium industrial dusts. Part 2. Development of Algae and of Bacteria of different biochemical properties in the soils

63%
Starzecka A., Bednarz T.
Ekologia Polska
|
1994
|
tom 42
|
nr 1-2
139-150
9

The participation of bacteria,algae and the remaining organisms in the total oxygen respiration of bottom sediments on the stream - Dobrzyce dam reservoir line [southern Poland]

63%
Starzecka A., Bednarz T.
Acta Hydrobiologica
|
1993
|
tom 35
|
nr 1
15-24
The primary production of algae (Pr) 717.56 J and their respiration (Ra) 154.60 J were highest in the estuary. The greatest respiration of bacteria (Rb) 45.96 J was in the reservoir. The total oxygen respiration (RO) 1036.78 J and the respiration of the remaining organisms (Rr) 1000.82 J g-1 C 24 h-1 were greatest in the stream. The values of algae (Ba) and bacteria (Bb) biomass, and Rb, Ra and Rb/Bb increased, and those of Rr and RO decreased on the stream - reservoir line.
10

The comparison of microbial production and destruction of organic matter in the bottom sediments of streams on agricultural and forest types of catchment, and sublittoral of the Dobczyce dam reservoir [ southern Poland ]

63%
Bednarz T., Starzecka A.
Acta Hydrobiologica
|
1993
|
tom 35
|
nr 4
285-294
In general, the phosphate and nitrite concentration in the waters, and C-org, biomass, production, and respiration of algae (Ba, Pr, Ra) in the bottom sediments were greater in the agricultural area. The ammonia and nitrate concentration, and biomass, respiration of bacteria (Bb, Rb), oxygen (RO), and total respiration of epibenthic communities (RT) as well as the respiration of the remaining organisms (Rr) were greater in the forest area than in the agricultural one.
11

Effect of fertilization on biological activity of soils contaminated with cadmium industrial dusts. Part 1. Growth of test plant Lepidium sativum, growth and metabolic activity of soil microflora

63%
Starzecka A., Bednarz T.
Ekologia Polska
|
1994
|
tom 42
|
nr 1-2
125-138
12

Microbiological processes taking place in Dobczyce Reservoir during spring water bloom

63%
Bednarz T., Starzecka A.
Oceanological Studies
|
1998
|
tom 27
|
nr 2
13

Energy flow through the algal and bacterial communities in the surface layer of bottom sediments of the River Raba and Dobczyce Reservoir [Southern Poland]

63%
Bednarz T., Starzecka A.
Acta Hydrobiologica
|
1997
|
tom 39
|
nr 1-2
The biomass, production, respiration of algae and heterotrophic bacteria were determined in the surface layer (0.5 cm) of bottom sediments in the river above and below the reservoir, and in the backwater and littoral zone of the reservoir during the vegetation periods (April-October) in 1993 and 1994. The amounts of energy flowing (assumed as the sum of biomass, production, and respiration) through algae and bacteria communities at particular stations were respectively 64-387 and 39-142 kJ m-2 d-1. From the pool of total energy bio- accumulated by heterotrophic bacteria and algae, 87-98% originated from algae, but from the pool of energy released 76-97% was due to heterotrophic bacteria.
14

Metabolic activity of microorganisms in the bottom sediments of a stream and of the Dobczyce dam-reservoir in the region of the Myslenice Basin [Southern Poland]

63%
Starzecka A., Bednarz T.
Polskie Archiwum Hydrobiologii
|
1997
|
tom 44
|
nr 3
15

Upper Vistula River: response of aquatic communities to pollution and impoundment. V. Photosynthetic and respiratory activity of seston

63%
Starzecka A., Bednarz T.
Polish Journal of Ecology
|
2002
|
tom 50
|
nr 2
From March 1997 to March 1998 the photosynthesis (PHS) and respiration of seston (Rs) and bacteria fraction (Rb) in the water of the Upper Vistula River on the section from 10.9 to 336.7 km of the river course were investigated Methods applied: PhS - light and dark bottles, Rs - dark bottles. Rb - respiration of bacterial fraction, which was isolated by water filtration. The smallest mean yearly value of PhS (2.1-8.6 J dm⁻³ 24 h⁻¹) was found at 10.9-36.6 km of the river course and the greatest ones (40.4-42.7 J dm⁻³ 24 h⁻¹) at 248.2-336.7 km, in accordance with the size of the river. Rs was the smallest (23.9-28.7 J dm⁻³ 24 h⁻¹) between 10.9-45.7 km of the river course (on the rather clean sector) and decisively greater (51.6 J dm⁻³ 24 h⁻¹) at 115.6 km, at the most polluted sites. Along longitudinal profile of the Upper Vistula River Rb was equalized and ranged from 20.7 to 24.1 J dm⁻³ 24 h⁻¹, with the exception at 10.9 (spring, clean part of the river, poor in seston) and 336.7 km of the river course, where it was 10-20% smaller. The last value might indicated the presence of organic matter easily available to bacteria at this site. Rb constituted from 45 to 78% of seston Rs with the minimal value at 115.6 km of the river course (the most polluted) and its maximal participation at 10.9 km - clean part of the river, rather poor in seston.
16

Mineralization of phycodetritus in water column of the submountain dam reservoir [Southern Poland]: simulated experiments

63%
Starzecka A., Bednarz T.
Polish Journal of Ecology
|
2004
|
tom 52
|
nr 3
The mineralization (expressed as O₂ consumption and CO₂ release) of Scenedesmus quadricauda detritus was investigated in homothermal (spring, autumn) and stratified (summer, winter) conditions, using the MicroOxymax respirometer. In experiments, the rate of O₂ consumption and CO₂ release, sedimentation rate and time of mineralization of phycodetritus in water from 2.5, 7.5 and >17 m depth were determined. It was found that 41% and 100% of detritus carbon (31.4 mg C dm⁻³) added to the water could be mineralized in whole water column in time 28 days during spring and 37 days during autumn homothermal conditions. In summer stratification periods 61% of the detritus carbon during 29 days, and in winter 100% during 35 days, could be mineralised down to the depth 18 m. The rate of mineralization of phycodetritus depends on temperature and activity of microflora. The differences in the rate of O₂ consumption and CO₂ release between particular layers of water and seasons were statistically significant in the majority of cases.
17

Comparison of microbiological activity in bottom sediments of littoral and profundal zones of a submontane dam reservoir

63%
Starzecka A., Bednarz T.
Acta Hydrobiologica
|
1998
|
tom 40
|
nr 4
18

Metabolism of bottom sediments in littoral of submountain dam reservoir and in the river feeding it

63%
Starzecka A., Bednarz T.
International Journal of Ecohydrology and Hydrobiology
|
2001
|
tom 01
|
nr 4
The paper presents the differences in metabolic processes of the bottom sediments of the River Raba up- and downstream the reservoir and in the Dobczyce Reservoir (southern Poland). In the sediments of the reservoir character and the intensities of metabolic processes were similar. In the river above the reservoir the metabolizm of sediments has the autotrophic character (the ratio of primary production to oxygen respiration P/R exceeded 1 value) and heterotrophic one in the river bellow the reservoir (P/R <1). The highest algal biomass (Ba) and low primary production (P) were found in the Raba River below the reservoir. At the downstream site organic mater the most refractory to biological degradation was presented. At this site the dominant part of energy (51%) was released by bacteria respiration (Rb). In upstream and in the reservoir the share of respiration of algae (Ra) and bacteria (Rb) in R amounted 6-27% and the remaining organisms (Rr) 73-94%.
19

Procesy mikrobiologiczne towarzyszace glonowym i sinicowym zakwitom wody

51%
Bednarz T., Starzecka A., Mazurkiewicz-Boron G.
Wiadomości Botaniczne
|
2002
|
tom 46
|
nr 1-2
45-55
20

Model of energy flow in the bottom sediments of littoral zone of a dam reservoir with regard to detritivorous roach, Rutilus rutilus [L.]

51%
Starzecka A., Bednarz T., Amirowicz A.
Polish Journal of Ecology
|
1999
|
tom 47
|
nr 1
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.