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Receipts and income of households in Poland

100%

Kozak J. M., Mrowczynska-Kaminska A.

Journal of Agribusiness and Rural Development

2021

tom 1[59]

Guelph permeameter measurements of the topsoil and upper subsoil hydraulic conductivity for characterising the structural state of arable lands

84%

Dolezal F., Kuraz V., Poruba M., Soukup M.

International Agrophysics

1997

tom 11

nr 3

Structural dynamic of social wasp communities (Hymenoptera: Vespinae) in forest areas destroyed by acid rains in the Karkonosze Mountains

67%

Pawlikowski T.

Ecological Questions

2009

tom 11

The structure of the social wasp communities was studied in the forest areas of the Karkonosze Mts. transformed by acid rains in 1989 and 1994. A significant increase of species diversity (H') was observed in the season of the even year, which resulted from the increased competing interactions between queen mothers. Whereas the distribution of the species' number decreased together with the altitude proportionally to natural distribution of the species' number recorded in the Tatra Mts. On the other hand, the only significantly increased value in the dynamics of Vespinae density in vegetation zones of the Karkonosze Mts. was recorded for the lower subalpine forest. While observing the progressing successive restoration of forests, one can assume that the recorded structural changes in communities of social wasps represent their transitional state.

Ograniczanie wyników

1 Ecological Questions

1 International Agrophysics

1 Journal of Agribusiness and Rural Development

1 Dolezal F.

1 Kozak J. M.

1 Kuraz V.

1 Mrowczynska-Kaminska A.

1 Pawlikowski T.

1 Poruba M.

1 Soukup M.

1 2021

1 2009

1 1997

Wyniki wyszukiwania

Receipts and income of households in Poland

Guelph permeameter measurements of the topsoil and upper subsoil hydraulic conductivity for characterising the structural state of arable lands

Structural dynamic of social wasp communities (Hymenoptera: Vespinae) in forest areas destroyed by acid rains in the Karkonosze Mountains