The article presents the results of macrophyte research of the Góreckie Lake basing of the Macrophyte Ecological Status Index (ESMI). The field survey were done twice – in July 2013 and 2019 at the time of optimum vegetation. According to the methodology, filed survey were conducted by the 16 representative transects, with a width of at least 30 meters. The ecological conditions of the lake significantly improved in 2019, which is confirmed the higher value of the ESMI index, and the lake changed its ecological status from moderate to good. The positive changes evidenced by the intensive development of submerged vegetation and increased values of diversity and colonization the phytolitoral by elodeids. The results on the depth of occurrence of plant growth, confirms a gradual recovery teams macrophytes in the lake due to the increase in water transparency.
The development of satellite technologies for observing the earth’s surface creates the possibility of implementing modern tools for surface waters quality monitoring. This article presents the results of the research aimed at developing an automated method for assessment of the eutrophication of inland waters. The advantages and limitations of the technology were analyzed and the potential possibilities of its application were described. The basic indicator of the trophic state of surface waters is the concentration of chlorophyll-a in the water. As result of the research, a strong relationship was obtained between the chlorophyll-a concentration values determined on the basis of standard measurement methods, and the chlorophyll-a values calculated on the basis of satellite spectral data. The functionalities of the developed software for automated measuring eutrophication of inland water using temote sensing were also presented. Despite a number of limitations of the technology, high application potential of the solution has been demonstrated.
In the following text the memory of Professor Jan Siuta included, founder and long-time President of the Polish Society of Ecological Engineering (PTIE), supporting the activities of local branches, among others, the South-Eastern Branch of PTIE in Rzeszów. The Polish Journal for Sustainable Development scientific journal was recalled, which for over 20 years, until recently with the participation of the Professor in the Scientific Committee, has been promoting ecological engineering and sustainable development. Meetings of Professor Jan Siuta in the academic center in Rzeszów were also exposed.
White mulberry Morus alba L. is a tree from the Moraceae family, which originated in East Asia and came to Europe in the mid-12th century. The greatest level of interest in the cultivation of white mulberry was observed in the 18th and 19th century and the oldest preserved mulberry alleys in Fore-Pomerania and Western Pomerania originate from this period. The greatest accomplishments in promoting this species in Prussia should be attributed to German Emperor Frederick II. In the last century, the interest in mulberry has significantly declined and, due to its average ornamental qualities, it is less and less common in green areas. The longest national white mulberry alley, consisting of 31 specimens, stretches over 800 meters.
The article presents the problem of the occurrence of an urban heat island. This phenomenon was observed for the Bielsko-Biała area on the basis of data on spatial distribution of air temperatures obtained in 2015. To carry out the planned research, maps of spatial distribution of air temperatures – averaged over the year, as well as for the summer and winter period – were made. Additionally, for selected districts of Bielsko-Biała the occurrence of thermal weather types was recognized and the duration of thermal seasons was determined. As a result of the works carried out, air temperature differences (reaching 3.4°C) were found in the studied area on an annual scale. Moreover, the differentiation in duration of thermal weather types and thermal seasons was confirmed. The data obtained made itpossible to determine the area of the urban heat island.
