2 research outputs found
Kavezno izlaganje lubina (Dicentrarchus labrax) u procjeni genotoksiÄnog utjecaja oneÄiÅ”Äenja
Genotoxic effects are often the earliest signs of pollution-related environmental disturbance. In this study, we used the comet assay and micronucleus test to assess DNA damage in the erythrocytes of the European sea bass (Dicentrarchus labrax) exposed to environmental pollution in situ. Fish were collected from a
fi sh farm in the Trogir Bay and their cages placed at an unpolluted reference site Å olta (NeÄujam Bay) and a polluted site Vranjic (KaÅ”tela Bay) for four weeks. A group of fi sh which remained at the fi sh farm Trogir Bay were used as the second control group. Fish exposed at the Vranjic site showed a signifi cantly higher erythrocyte DNA damage, measured by the comet assay, than either control group. Micronucleus induction showed a similar gradient of DNA damage, but did not reach statistical signifi cance. Our results show that cage exposure of a marine fi sh D. labrax can be useful in environmental biomonitoring and confi rm the comet assay as a suitable tool for detecting pollution-related genotoxicity.GenotoksiÄni uÄinak Äesto je jedan od najranijih pokazatelja Å”tetnog djelovanja oneÄiÅ”Äenja okoliÅ”a. U ovom radu procijenjeno je oÅ”teÄenje DNA u eritrocitima lubina (Dicentrarchus labrax) izloženima okoliÅ”nom oneÄiÅ”Äenju s pomoÄu komet-testa i mikronukleus-testa. Lubini su prikupljeni na ribogojiliÅ”tu i kavezno izloženi u periodu od Äetiri tjedna na dvije postaje razliÄitog stupnja oneÄiÅ”Äenja na jadranskoj obali: na kontrolnoj postaji Å olta (zaljev NeÄujam) i na oneÄiÅ”Äenoj postaji Vranjic (KaÅ”telanski zaljev). Zasebna skupina lubina skupljena na ribogojiliÅ”tu poslužila je kao druga kontrola. Rezultati komet-testa pokazali su statistiÄki znaÄajan porast oÅ”teÄenja DNA na postaji Vranjic u usporedbi s obje kontrolne postaje. Rezultati mikronukleus-testa pokazali su sliÄan gradijent oneÄiÅ”Äenja, iako nisu dosegli statistiÄku znaÄajnost. Ovi rezultati upuÄuju na primjenjivost kaveznog izlaganja lubina D. labrax u biomonitoringu vodenog okoliÅ”a te potvrÄuju korisnost komet-testa kao prikladne metode za detekciju genotoksiÄnog utjecaja oneÄiÅ”Äenja
Development of "Land Rent Model" Using Multicriterional Analysis and Geographical Information Systems
The application of multicriterional analysis and geographical information systems in the development of land rent model, is presented in this paper. The objective of the model is to provide the basis for the evaluation of urban areas. The aim of the research is to find out the most su itable model for definition of the city rent in coastal urban areas. The presented research is based on information technology, including graphical and numerical processing of appropriately handled and structured information. The rent model includes all the relevant factors considering values of the urban environment, especially historical and cultural heritage. Such evaluation, together with information technologies, represent very useful and practical tool for environmentally sound management of urban areas, and a support to decision makers