The quality of surface water in watercourses in the region of Lublin agglomeration was studied in 2012-2014. Biological and chemical indicators of the study for various sampling sites were detected and the resulting values of the indicators were processed statistically. Rivers characterized by small size and the flow and modification of the riverbed. The resulting low values of macrophyte river index and infusorial index pointed to a poor quality of surface waters. Chemical indicators of the quality of surface waters reached low values, only BOD and phosphates reached high values. The river is located outside the city and it is characterized by moderate potential ecological (III quality class), and the river within Lublin is insufficiently potential ecological (IV quality class). Statistical analysis showed high variability index values between the studied positions.
Faunistic review of Polish Platypodinae and Scolytinae (Coleoptera: Curculionidae)Based on a survey of the literature and collections, the distributions of the Platypodinae and Scolytinae (Curculionidae) within the present-day borders of Poland are summarized. An updated and annotated checklist is given of Polish pinhole borers (1 genus, 1 species) and bark beetles (35 genera, 110 species).Carphoborus cholodkovskyiSpessivtsev has been removed from the list; the presence ofHylastinus obscurus(Marsham),Pteleobius kraatzii(Eichhoff),Pityophthorus exsculptus(Ratzeburg),Cryphalus saltuariusWeise,Thamnurgus kaltenbachii(Bach),T. varipesEichhoff,Pityogenes irkutensis monacensisFuchs,P. saalasiEggers,Xyleborus eurygraphus(Ratzeburg) andX. pfeilii(Ratzeburg), reported by previous authors, needs to be confirmed by new findings.Pitophthorus carniolicusWichmann,Xylosandrus germanus(Blandford) andCrypturgus subcribrosusEggers were recorded generally from Poland.Hylastes plumbeusBlandford,Phloeosinus aubei(Perris),Gnathotrichus materiarius(Fitch),Orthotomicus erosus(Wollaston),Scolytus sulcifronsRey andTrypodendron laeveEggers (Knížek 2011) were erroneously recorded from Poland.
The purpose of the work was to determine the surface and subsurface water runoff and selected constituents of the matter contained and carried out from the eroded loess slope used as arable land. The research was carried out in 2008–2011 on the Lublin Upland. The quantity of water flowing out of the slope was measured and samples were collected in order to determine the concentration of the soil suspension of nitrogen and its forms as well as phosphorus and potassium. Soil tests were also carried out and the rainfall amount and intensity was monitored. The research results show that the amount of precipitation was significantly statistically correlated with the quantity of surface and subsurface water runoff and with the precipitation and surface runoff erosion indicator EI30 (correlations at the level of r = 0.75–0.78). In addition, the mass of eroded soil was strongly correlated with the erosion indicator of rain and surface runoff EI30 (r = 0.86). The annual soil losses were from 21.1 to 173.1 Mg ha−1. The concentration of chemical components dissolved in the surface and subsurface runoff water in most cases proved to be negatively statistically correlated with the amount of precipitation and indicator EI30. The correlation coefficients (r) were at levels from −0.32 to −0.52. The annual loss of nutrients caused by chemical erosion was: nitrogen 7.210–29.949 kg ha−1, phosphorus 0.846–5.279 kg ha−1 and potassium 7.065–21.660 kg ha−1. The highest intensity of water erosion was recorded in 2010, when root crops were grown in the field.
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