Evaluation of suitability areas for ecotourism using multi-criteria analysis. The case of central Serbian viticultural region

The authors participated equally in the development of this researchTourism in the wine region of Central Serbia has been gaining more and more affirmation in recent years. This wine destination offers to tourists a rich wine culture and recreation. Also, as a special supplement to wine tourism, ecotourism is especially promoted, in combination with quality wines with geographical origin. The basic analysis of this study is to identify potential locations for ecotourism activities in the wine region of Central Serbia based on physical-geographical elements (topography, altitude, slope, land use / coverage, diversity, distance from rivers) and socio-economic data (proximity to tourist attractions, distance from major roads and places). The integration of the Geographic Information System (GIS) and the Analytical Hierarchy Process (AHP) greatly facilitates the decision-making process in the assessment of ecotourism activities. As a result of this paper, a map of benefits for the development of ecotourism potentials was highlighted. Very high potential is shown by forest areas that can play a key role in tourism but are not fully used. This analysis helps in two ways: the promotion of ecotourism and viticultural destinations. In particular, in the assessment and implementation for local communities to identify tourism as an opportunity for economic development.This research was funded by the projects: “New strategies for new tourist conflicts in Andalusian historic centres”, Andalusian FEDER Operational Program (UMA20-FEDERJA- 005), Spain, and “Residents versus tourists in Andalusian historic centres? Conflicts, strategies and new post-Covid scenarios” (P20_01198) financed by the Andalusian Plan for Research, Development and Innovation (PAIDI 2020), Spain

Koncentracija metala u mišićnom tkivu riba iz različitih ribnjaka

Riba predstavlja važan deo ljudske ishrane, a takođe, riba je dobar pokazatelj kontaminacije životne sredine od strane jednog broja supstanci, uključujući i tragove metala u slatkovodnim sistemima, posebno zbog toga što se ribe, kao tercijelni potrošači, nalaze na vrhu lanca ishrane u vodenom ekosistemu (Noël i sar., 2013). Mnogo pažnje posvećeno je elementima kao što su olovo (Pb), kadmijum (Cd), Živa (Hg) i Arsen (As) i efekti izloženosti ovim elementima su sveobuhvatno istraženi (Castro-González and Méndez-Armenta, 2008; Has-Schön et al., 2008). Zbog svoje toksičnosti, otpornosti i bioakumulacije u vodi i sedimentima, kada se nalaze u visokim koncentracijama, ovi elementi predstavljaju opasnost za sve žive organizme. U pogledu bezbednosti javnog zdravlja, kod riba, prate se koncentracije olova, kadmijuma i žive, gde postoje jasno definisani maksimalni nivoi teških metala u namirnicama koji su određeni od strane Evropske Komisije, br. 1881/2006 (EC, 2006), izmenjena i dopunjena EC 629/2008 (EC, 2008). Za arsen, maksimalni nivo još nije uspostavljen na evropskom nivou, ali se očekuje da će granične vrednosti za arsen biti postavljene u bliskoj budućnosti, kao i metode za određivanje arsena (Noël et al., 2013). Za utvrđivanje koncentracije teških metala u tkivu riba prikupljeno je deset uzoraka dve različite vrste riba - šarana (Cyprinus carpio) i evropske ili severne štuke (Esox lucius). Uzorci su ulovljeni od strane profesionalnih ribara tokom rane jeseni 2013. godine iz četiri različita ribnjaka na području Beograda. Dobijeni rezultati su izraženi kao srednja vrednost ± standardna devijacija. Statistička analiza je urađena je korišćenjem Studentovog t-testa i analizom varijanse (ANOVA) sa višestrukim poređenjem Turkey test za utvrđivanje značajnih razlika između srednjih vrednosti. Primenjen je nivo značajnosti od 0.01 i 0.05. U različitim ribnjacima, koncentracija metala u mišićnom tkivu šarana je varirala u zavisnosti od vrste metala. Između sva četiri poređena ribnjaka nije utvrđena statistički značajna razlika jedino u koncentraciji kadmijuma u mišićnom tkivu. U ostalim slučajevima poređenja utrvđene su statistički značajne razlike (p<0.01). Koncentracija metala u mišićnom tkivu štuke razlikovala se između ribnjaka, zavisno od vrste metala. U svim slučajevima poređenja utvrđene su statistički značajne razlike (p<0.01). Koncentracija olova u mišićnom tkivu štuke u svim poređenim ribnjacima bila je statistički značajno veća (p<0,01) u odnosu na koncentraciju olova u mišićnom tkivu šarana. Koncentracija kadmijuma u mišićnom tkivu štuke bila je statistički značajno veća (p<0,01; p<0,05) od koncentracije kadmijuma u mišićnom tkivu šaran u svim poređenim ribnjacima. Za razliku od koncentracije olova i kadmijuma, koncentracija žive u mišićnom tkivu štuke u poređenim ribnjacima bila je statistički značajno niža (p<0,01) u odnosu na koncentracije žive u mišićnom tkivu šarana. Koncentracija arsena bila je statistički značajno veća (p<0,01) u mišićnom tkivu šarana od koncentracije arsena u mišićnom tkivu štuke. Rezultati koncentracija ispitanih elemenata u mišićnom tkivu riba pokazuju varijacije u opsegu koji se čini tipičan za ribnjake u Srbiji, ali su ove koncentracije niže od onih u rekama sa značajnim antropogenim uticajem

Zajednica Arctio-Artemisetum vulgaris (Tx. 1942) Oberd. et al. 1967.: najzastupljenija ruderalna zajednica na području Pančevačkog rita

A several-year investigation of distribution, phytocoenological differentiation, floristic composition and structure of the ruderal flora and vegetation, and relative anthropogenic influences was conducted in the area of Pančevački rit. The study focused on the ruderal community Arctio-Artemisetum vulgaris, the most widespread of 10 ruderal communities identified in a detailed phytocoenological analysis of the location of Pančevački rit.Na području Pančevačkog rita su obavljena višegodišnja floristička istraživanja rasprostranjenosti, fitocenološke diferenciranosti, strukturalne i antropogene uslovljenosti ruderalne vegetacije. U radu je analizirana zajednica Arctio-Artemisetum vulgaris, koja predstavlja najrasprostranjeniju zajednicu od 10 razvijenih i opisanih ruderalnih zajednica na prostoru Pančevačkog rita

THE ROLE OF CANDIDA ALBICANS ON THE DEVELOPMENT OF STOMATITIS IN PATIENTS WEARING DENTURES

Denture stomatitis is the most common inflammatory reaction that occurs in people who wear dentures. It is believed that in 60-65% of cases the cause of this inflammation is infections by yeasts from the genus Candida (C.), primarily Candida albicans infection. C.albicans is a part of the normal microflora of the respiratory and digestive tract. This yeast has the ability to adhere to the oral mucosa and to the base of the denture, as well as to form a biofilm. Its virulence is especially supported by the state of weakened resistance of the organism, when C.albicans expresses its pathological effect. This paper presents the pathogenesis of C. albicans-associated denture stomatitis, as well as the most common diagnostic and therapeutic procedures used to diagnose and successful therapy

Supervivencia de la oferta hotelera en un destino maduro de litoral: el caso de Torremolinos

Se realiza un estudio sobre la supervivencia hotelera en un destino maduro litoral como es el caso de Torremolinos. En los estudios de supervivencia hotelera la utilización de variables geográficas y de tipología de destinos son una aportación novedosa. Para este estudio se han identificado todos los hoteles abiertos en el siglo XX y XXI en Torremolinos, y se han localizado espacialmente mediante el programa ArcGIS Desktop. A través del SPSS v.25 se ha calculado la supervivencia de los hoteles, para ello se ha aplicado el estimador de Kaplan-Meier y la prueba de Log Rank. Se han utilizado siete variables para estimar el comportamiento de los hoteles: antigüedad, categoría, densidad, capacidad de alojamiento, distancia a la playa, popularidad del hotel y precio de la habitación. Los resultados destacan que los hoteles con una mayor capacidad de supervivencia son aquellos que iniciaron su andadura en la década de 1990, con cuatro estrellas, con una densidad significativa de plazas por m2, que tienen una oferta superior a las 300 camas por hotel y que se encuentran cerca de la playa. De forma general, el precio de la habitación y la popularidad del hotel disminuyen conforme se alejan de la playa

SADRŽAJ METALA U ZEMLJIŠTU I ODABRANIM BILJKAMA NA JALOVIŠTU FLOTACIJE RUDNIK DOO „RUDNIK"

The aim of this study was to determine the concentration of some metals (Ca, Mg, Mn, Fe, Zn, Ni, Cr, Cd) in the soil and species of Tussilago farfara L. and Clematis vitalba L. on the tailings and flotation of the mine DOO "Rudnik". Concentrations in the soil were: Pb and Cu - higher than the maximum allowed, limit and remediation values; Cd, Cr and Ni - higher than the maximum allowed and limit values, and Zn higher than the limit values (according to the regulations of the Republic of Serbia). Better bioaccumulation of all tested metals was shown by T. farfara species, especially leaves for Zn. The results indicate the possible use of aboveground parts of both plant species in the revitalization of tailings by bioaccumulation of tested metals.Publishe

DEFICIT IRRIGATION TECHNIQUE FOR REDUCING WATER USE OF TOMATO UNDER POLYTUNNEL CONDITIONS

The aim of paper was to asses the use of regulated deficit irrigation (RDI) for production of two tomato cultivars (Cedrico and Abellus) in polytunnels in Serbia. RDI plants received 60% of the water that was applied to FI plants and significant saving of water for irrigation and increased in irrigation water use efficiency (IWUE) were achieved. Yield data for Cedrico cultivar showed no differences between RDI and FI, while due to the bigger sensitivity to drought, yield of Abellus was reduced under RDI. In general, fruit quality (soluble solids, titrable acidity) was sustained or improved in both cultivars under RDI. Economic analyses showed that due to the current low prices of water and electricity in Serbia, the profit increase of Cedrico, similarly to the previously trialed cultivar Amati, was not high under RDI comparing to FI. Reduction of yield and consequent profit for Abellus, indicated that for future commercial growing of tomato under RDI should be used drought resistant cultivars