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EN
An increase in demand for energy from renewable sources has increased the hectareage of crops grown for energy purposes. The impact of large-scale energy crop monocultures on soil biodiversity is poorly understood and requires long-term monitoring. Due to their specific lifestyle, Lumbricidae, known as “ecosystem engineers”, have found application in biomonitoring of the soil environment. This study aimed to evaluate the qualitative and quantitative structure of Lumbricidae in annual rapeseed (Brassica napus L.) and perennial willow (Salix viminalis L.) crops for energy purposes, with a permanent grassland as a control site. The research was conducted on the territory of the Podkarpackie Agricultural Advisory Center in Boguchwała (southeastern Poland). Earthworms were obtained by hand sorting soil blocks of 25×25×25 cm and a 0.4% formalin solution was used to extract individuals from deeper soil layers. There were no differences in the species composition of Lumbricidae between the analyzed crops. Five species of earthworms, Dendrodrilus rubidus tenius, Lumbricus rubelllus, Aporrectodea caliginosa, A. rosea, and L. terrestris, were found at each study site. Rapeseed had the lowest density (17.26 ± 9.16 ind•m-2) and biomass (5.93 ± 2.42 g•m-2) of Lumbricidae (p < 0.05). On sites with willow and permanent grassland, density and biomass of Lumbricidae were similar (69.15 ± 28.99 ind•m-2; 26.55 ± 9.67 g•m-2 and 54.04 ± 22.93 ind•m-2; 20.03 ± 7.99 g•m-2, respectively (p > 0.05). The study demonstrated the beneficial effect of perennial willow cultivation on the quantitative structure of earthworm communities. Only long-term biomonitoring will make it possible to determine the real impact of energy crops on invertebrate assemblages and their appropriate management to promote biodiversity.
EN
In the automated world of business, a modern engineer should be characterized by a passion for technology, creativity, innovative capacity, initiative and commitment to scientific and technical progress, ease of adaptation, but also conviction about the mission of technology. Among these, a lack of competence in recognition of, and response to, anthropogenic ecological threats and destruction of biodiversity and ecosystems was noticed. The aim of this article was to draw attention to the problems of educating engineers, to include provision with specialist knowledge and development of necessary competences. The article also refers to the growth of waste production, including packaging waste, presenting an example of the use of activating methods in adult education, deployed in the subject “Waste management” for students of “Renewable energy sources and waste management”, implemented at the University of Rzeszów. Such teaching activity is of great importance in shaping the aforementioned competences.
EN
The study presents the “EREJ” project tested with students at the University of Rzeszów. The project is important for the development of the ability to search for materials for work. It improves the ability to prepare a PPT presentation and write an essay, skills in oral and written communication, the ability to work individually and in a group, the ability to discuss, transmit feedback, and present work publically. The project is also important for increasing the knowledge in the field of environmental issues.
EN
The study was designed to determine selected components of chemical composition in the body of earthworms cultivated on organic kitchen waste. It was shown that their biomass can be classified as protein-rich, succulent fodder. Notably, this work also specified the contents of 17 essential amino acids, as well as the profile of fatty acids. It also highlighted selected threats to the natural environment caused by food production and food wastage by man. Because of that, this paper also presents the determinants of earthworm biomass production. The possibilities of consuming alternative invertebrate protein were also discussed.
EN
Earthworms can be used in the vermicomposting process. The success of the process depends on many factors, including the choice of the appropriate earthworm species. Eisenia fetida and Dendrobaena veneta are treated as "compost earthworms". They are characterized by a relatively short life cycle, relatively fast growth rate, efficient reproduction and a similar amount of organic matter processed, compared to species found in the natural environment. However, while analyzing their features in more detail, it can be seen that these two species differ. The aim of this study was to compare the selected features of the Eisenia fetida (Sav.) and Dendrobaena veneta (Rosa) earthworm populations in an annual cycle. The mature specimens of E. fetida or D. veneta were put in groups into plastic boxes with soil. Populations were checked regularly by manual sorting of the medium. The earthworms and cocoons were cleaned, counted and weighed individually. Afterwards, the mature individuals were placed in appropriate containers, while the cocoons were separated from the starting populations. The earthworms were fed ad libidum on kitchen wastes every four weeks. The experiment was carried out under constant laboratory conditions for 52 weeks. The analysis of the studied populations confirmed that the tested species of earthworms differ from each other. After 52 weeks of the experiment, the sum of earthworm biomass was higher for D. veneta compared to E. fetida species (18.568 ± 1.867 g and 7.263 ± 1.786 g; p <0.01, respectively). This relationship was confirmed for the average body weight of earthworms (D. veneta: 0.912 ± 0.046 g; E. fetida 0.480 ± 0.006 g; t = 15.95, p <0.01) and cocoons (D. veneta: 0.032 ± 0.003 g, E. fetida 0.014 ± 0.001 g; t = 9.15, p <0.01).
EN
Lumbricidae, as representatives of edaphone, are used in ecological research. Over the years, various attempts to improve the ways of earthworm extraction have been made. One of the pro-environmental methods for extracting these animals from the soil is the method involving the application of electric current (octet). The aim of the study was to compare the efficiency of the earthworm extraction using the mixed method (manual segregation along with the use of 0.5% formalin solution) with the method applying the electroshocking. The species composition of earthworms extracted using both methods was the same (seven species of earthworms belonging to three ecomorphological groups were found). A lower number and biomass of earthworms were found in the permanent grassland and arable land with the help of octet than using the mixed method. Further research is needed to improve the existing methods for Lumbricidae extraction and to implement new ones that would be safe for the edaphon representatives.
7
Content available remote Stosunek mieszkańców Rzeszowa do odnawialnych źródeł energii
PL
W XXI wieku następuje rozwój i intensyfikacja gospodarki. Powoduje to zwiększenie wydobycia surowców kopalnych i przyczynia się do wdrażania nowych technologii. Wyczerpywanie surowców kopalnych prowadzi do zmniejszenia opłacalności inwestycji. Energia pozyskiwana z konwencjonalnych źródeł energii ma negatywny wpływ na środowisko naturalne. W wyniku spalania węgla do atmosfery dostają się duże ilości dwutlenku węgla i siarki, co powoduje nasilenie efektu cieplarnianego. Zaletą funkcjonowania odnawialnych źródeł energii jest ich mniejszy negatywny wpływ na środowisko. Wykorzystując energię wody, wiatru oraz słońca możemy w niekonwencjonalny sposób pozyskiwać energię, dzięki czemu chronimy środowisko i ratujemy dobrą kondycję ekosystemów, które nam pozostały. Wyniki badań wskazują na wzrastającą świadomość mieszkańców Rzeszowa w tym zakresie.
EN
Over the years, we have been observing faster development of the economy. Its development drives the extraction of fossil raw materials and contributes to the implementation of new technologies. Resources are limited, which increases the cost of their extraction. The depletion of fossil raw materials leads to a reduction in the profitability of investments and entails high mining costs. Energy obtained from conventional energy sources has a negative impact on the natural environment. As a result of burning these raw materials, large amounts of carbon dioxide and sulfur get into the atmosphere, which intensifies the greenhouse effect. The advantage of operating renewable energy sources is their lower environmental impact. Using water, wind and sun, we can obtain energy in an unconventional way, thanks to which we protect the environment and save ecosystems that we have left. The research results indicate the growing awareness of the inhabitants of Rzeszow in this respect.
PL
Celem opracowania jest zaprezentowanie ewolucji w wartościowaniu zasobów środowiska, w tym terminu „świadczenia ekosystemowe”. Upowszechnienie tego ostatniego pojęcia ma znaczenie dla pilnych i efektywnych kroków ku zmianie sposobu myślenia i działania w rozwiązywaniu problemów ekonomicznych i środowiskowych. Daje więc kolejną szansę edukacji dla zrównoważonego rozwoju i lepszego rozumienia, akceptacji i respektowania wyników oceny oddziaływania na środowisko (OOŚ). Publikacja uwypukla nadal dominujące w sposobie myślenia ludzi eksponowanie wartości ekonomicznych ponad przyrodniczymi i fakt, że w związku z tym OOŚ są wciąż traktowane jako czynnik ograniczający rozwój gospodarczy i postęp cywilizacyjny.
EN
The aim of the study is to present evolution in the valuation of environmental resources, including the term "ecosystem services". Dissemination of the latter concept is important for urgent and effective steps to change the way of thinking and acting in solving economic and environmental problems. Therefore, it provides another educational opportunity for sustainable development and better understanding, acceptance and respect of the results of the environmental impact assessment (EIA). The publication emphasizes still dominating in people's way of thinking the displaying of economic values above natural ones and the fact that in this context EIAs are still treated as a factor limiting economic development and civilization progress.
EN
Anesthetic drugs have been tested for years on rats, rabbits, dogs, cats and monkeys, which may raise ethical concerns. Researchers do not always pay attention to the possibility of using techniques of anesthesia, analgesia or euthanasia in relation to invertebrate animals. It has previously been shown that earthworms meet the requirements of laboratory animals, and being a good alternative to the studies on vertebrates, may also be used as the first stage of testing anesthetics. The lethal concentrations of procaine and lidocaine for E. fetida and D. veneta were established using modified filter paper contact test. Using a modified method developed for testing anesthetics, mature earthworms (clitellate) of both species were used to check the effectiveness of lidocaine and procaine in safe immobilizing of earthworms. The reactions of earthworms in contact with anesthetics were different. The possibility of using a higher concentration range of procaine and lidocaine for E. fetida than for D. veneta, as E. fetida demonstrated a greater resistance to the stress caused by the action of chemical substances. The response to this stress varied and depended on the concentration used; however, higher concentrations of anesthetics caused rapid body movements and discharge of the coelomic fluid as well as morphological changes observed after 48 hours. Procaine was not effective in immobilizing earthworms, but lidocaine proved effective in reversibly immobilizing both species. For E. fetida, lidocaine in the concentrations of 1.4 and 1.6 at 95 and 90 min, respectively, resulted in a full immobilization of animals, which then survived following 24h and 48h of recovery. For D. veneta, lidocaine in the concentrations 1.3 and 1.4 during 40 min proved effective and safe to use, as all individuals survived following 24h and 48h of recovery.
EN
Lumbricidae play a key role in the soil environment as “the ecosystem engineers”. They participate in all the categories of services provided by ecosystems. In agricultural areas, the conventional intensive farming practices have led to a significant decline in the biological diversity of soils including earthworms. In this study, we attempted to characterize the community structure of earthworms in permanent grassland and arable land of the Didactic & Experimental Station of Rzeszów University in Krasne near Rzeszów. Similar densities of earthworms were observed in the grassland and in the arable land (101.01 ± 18.03 ind. ∙ m-2 and 82.12 ± 18.26 ind. ∙ m-2, respectively) (p > 0.05) as well as a similar biomass of Lumbricidae (77.72 ± 15.30 g ∙ m-2 and 54.34 ± 11.72 g ∙ m-2) (p > 0.05). In the research, 7 species of earthworms were found in the permanent grassland and 6 representatives of Lumbricidae were identified in the arable land. The identified earthworms represented all three main morpho-ecological groups. The density and biomass of epi-endogeic earthworm L. rubellus and the anecic species of L. terrestris were shown to be higher (p < 0.05) in the grassland as compared to the arable land. In order to protect Lumbricidae and to sustain the beneficial role of earthworms in an ecosystem, it is necessary to monitor the negative changes in populations of earthworm species attributed to various farming practices.
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