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Oxygen deficiency in Cracow. I. The town's oxygen balance

100%

Bandola-Ciolczyk E., Witkowski Z.

Bulletin of the Polish Academy of Sciences. Biological Sciences

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1991

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tom 39

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nr 2

2

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Influence of anthropopression on concentration of biogenic compounds in water of small ponds in farmland

84%

Galczynska M., Kot M.

Journal of Elementology

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2010

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tom 15

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nr 1

53-63

A rapidly diminishing number and degradation of water ponds cause many negative effects in the structure of agricultural ecosystems, by limiting surface retention and increasing migration of chemical compounds from the basin. The goal of this research was to find the influence of anthropopression on the chemical composition of water in field ponds. Analysis of some chemical and physical parameters was carried out on water samples collected once a month from 5 field ponds located in the District of Pyrzyce, Commune of Zabowo, between March and October 2004. The five water ponds differed with respect to the spatial development of their surroundings and their degradation. The concentration of N-NH4+ N-NO2- i N-NO3- oraz PO43- were measured according to the Polish Standards. The level of oxygen, temperature and water pH were measured immediately after collecting each sample of water. The analyzed field ponds were different in respect of the degree of degradation processes. What was characteristic of the five ponds was a large variation in concentrations of biogenic compounds in water, depending on the form of anthropopression and vegetation in and around the ponds. The high level of PO43- and N-NH4+ in water and the succession of water plants prove that ponds 2, 3 and 4 are highly eutrophicated. Due to the extremely high concentration of PO43- in the water, field pond 2, located near a former state farm, can be classified as hypertrophic. This pond also had the biggest oxygen deficit.

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Mikroorganizmy zasiedlajace wspolczesne drewno sosny [Pinus sylvestris L.] w glebie torfowej stanowiska archeologicznego w Biskupinie

43%

Gajewska J., Kostecka J.

Acta Agraria et Silvestria. Series Silvestris

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2007

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tom 45

27-37

Microorganisms colonizing a contemporary pine wood (Pinus sylvestris L.) stored in a peat soil of the archaeological site in Biskupin. The experiment was conducted on the archaeological SP1 and SP4 sites in Biskupin. Both dry and wet samples of the contemporary pine wood (Pinus sylvestris L.) were exposed in the layer of peat at the 50 and 100 cm of depth and in a peaty layer at the bottom of a trench, where other wooden constructions from the Lusatian settlement were deposited. The experimental samples were recovered after two years of deposition for physical, chemical and microbiological examinations. It was observed, that pine wood were colonized by a different saprophytic and pathogenic bacteria and microscopic fungi. The maintenance of an anoxic condition can reduce the occurrence of cellulolytic actinomycetes strains and microscopic fungi and can limit the speed of wood decay.

Ograniczanie wyników

1 Acta Agraria et Silvestria. Series Silvestris

1 Bulletin of the Polish Academy of Sciences. Biological Sciences

1 Journal of Elementology

1 Bandola-Ciolczyk E.

1 Gajewska J.

1 Galczynska M.

1 Kostecka J.

1 Kot M.

1 Witkowski Z.

1 2010

1 2007

1 1991

Oxygen deficiency in Cracow. I. The town's oxygen balance

Influence of anthropopression on concentration of biogenic compounds in water of small ponds in farmland

Mikroorganizmy zasiedlajace wspolczesne drewno sosny [Pinus sylvestris L.] w glebie torfowej stanowiska archeologicznego w Biskupinie