First report on the non-indigenous triclad girardia tigrina (Girard, 1850) (Tricladida, Dugesiidae) in Serbia, with Notes on its Ecology and Distribution

Girardia tigrina (Girard, 1850) (Turbellaria, Tricladida, Dugesiidae), a native freshwater triclad of North America, is a widespread species, which has been introduced by human activities into various parts of the world, including Europe. The aim of this paper is to contribute to the knowledge of this species by presenting its frst record and recent distribution in Serbia. Girardia tigrina was recorded in Serbia in 2008 in the lower stretch of the Kolubara River. After this initial fnding, the species was identifed only a few more times, but with low abundance. Its presence only in the northern part of Serbia, in the Danube River and in its proximity, points to the Danube River and its larger tributaries (the South invasive corridor) as the main route of its spread in the country. Our data suggest that G. tigrina should not be considered an invasive species but as an alien species with a minor impact on native communities

Aquatic macroinvertebrates of the Jablanica river, Serbia

Research on the community of aquatic macroinvertebrates was carried out during 2005 and 2006 at four sampling sites along the Jablanica River, a right-hand tributary of the Kolubara River. Fifty-seven taxa were recorded in the course of the investigation. The most diverse group was Ephemeroptera, followed by Trichoptera and Plecoptera. Members of the Rhitrogena semicolorata group were the most abundant. Our results could be the basis for evaluation of the influence of damming of the Jablanica River on the status of its water and can serve as a model for studying the influ­ence of hydromorphological degradation of aquatic ecosystems

Comparison of the effectiveness of kick and sweep hand net and Surber net sampling techniques used for collecting aquatic macroinvertebrate samples

The objective of this work is to analyze the effectiveness of two widely used methods for collecting aquatic macroinvertebrate samples: the semiquantitative kick and sweep (K&S) and quantitative Surber net (SN) techniques. Based on our data, the methods were fully comparable as regards analysis of the macroinvertebrate metrics most often used in ecological status assessment (sensitivity/tolerance parameters), while K&S was found to be more successful in the evaluation of biodiversity. Thus, both methods could be used for routine monitoring of the status of water bodies, according to the recommendation of the EU Water Framework Directive, while for research, K&S is more advanced. K&S is also more effective timewise for material collecting. SN sampling is a quantitative method and could thus be used in studies of aquatic ecosystem productivity.Archives of Biological Sciences (2017), 69(2): 233-23

Comparison of the effectiveness of kick and sweep hand net and surber net sampling techniques used for collecting aquatic macroinvertebrate samples

The objective of this work is to analyze the effectiveness of two widely used methods for collecting aquatic macroinvertebrate samples: the semiquantitative kick and sweep (K&S) and quantitative Surber net (SN) techniques. Based on our data, the methods were fully comparable as regards analysis of the macroinvertebrate metrics most often used in ecological status assessment (sensitivity/tolerance parameters), while K&S was found to be more successful in the evaluation of biodiversity. Thus, both methods could be used for routine monitoring of the status of water bodies, according to the recommendation of the EU Water Framework Directive, while for research, K&S is more advanced. K&S is also more effective timewise for material collecting. SN sampling is a quantitative method and could thus be used in studies of aquatic ecosystem productivity.The final publication is available at [http://www.serbiosoc.org.rs/arch/index.php/abs/article/view/731]Archives of Biological Sciences (2016), OnLine Firs

Aquatic macroinvertebrates of the Jablanica river, Serbia

Research on the community of aquatic macroinvertebrates was carried out during 2005 and 2006 at four sampling sites along the Jablanica River, a right-hand tributary of the Kolubara River. Fifty-seven taxa were recorded in the course of the investigation. The most diverse group was Ephemeroptera, followed by Trichoptera and Plecoptera. Members of the Rhitrogena semicolorata group were the most abundant. Our results could be the basis for evaluation of the influence of damming of the Jablanica River on the status of its water and can serve as a model for studying the influ­ence of hydromorphological degradation of aquatic ecosystems.Istraživanja zajednice akvatičnih makrobeskičmenjaka vršena su tokom 2005. i 2006. godine na četiri lokaliteta reke Jablanice, desnog sastavka Kolubare. Ukupno je zabeleženo 57 taksona. Najraznovrsnije grupe su bile Ephemeroptera, Trichoptera i Plecoptera. Najbrojniji takson je Rhitrogena semicolorata Gr. Dobijeni rezultati predstavljaju osnovu za procenu uticaja izgradnje brane na status vode reke Jablanice i mogu biti korišćeni kao model za ispitivanje uticaja hidromorfoloških promena na vodene ekosisteme uopšte.Projekat ministarstva br. 14302

The first record of the micro-caddisfly genus oxyethira eaton, 1873 (Trichoptera: Hydroptilidae) from Serbia

We report the frst record of the genus Oxyethira Eaton, 1873 from Serbia. This fnding increases the number of known hydroptilid genera from Serbia to four. A total of 14 larval specimens were collected in November 2015 from a small stream at the town of Indija (SW Vojvodina, Serbia). Since there are no descriptions of larvae of Oxyethira spp., it is not possible to identify the collected specimens at the species level

First report on the non-indigenous triclad girardia tigrina (Girard, 1850) (Tricladida, Dugesiidae) in Serbia, with Notes on its Ecology and Distribution

Girardia tigrina (Girard, 1850) (Turbellaria, Tricladida, Dugesiidae), a native freshwater triclad of North America, is a widespread species, which has been introduced by human activities into various parts of the world, including Europe. The aim of this paper is to contribute to the knowledge of this species by presenting its frst record and recent distribution in Serbia. Girardia tigrina was recorded in Serbia in 2008 in the lower stretch of the Kolubara River. After this initial fnding, the species was identifed only a few more times, but with low abundance. Its presence only in the northern part of Serbia, in the Danube River and in its proximity, points to the Danube River and its larger tributaries (the South invasive corridor) as the main route of its spread in the country. Our data suggest that G. tigrina should not be considered an invasive species but as an alien species with a minor impact on native communities

The first record of the micro-caddisfly genus oxyethira eaton, 1873 (Trichoptera: Hydroptilidae) from Serbia

We report the frst record of the genus Oxyethira Eaton, 1873 from Serbia. This fnding increases the number of known hydroptilid genera from Serbia to four. A total of 14 larval specimens were collected in November 2015 from a small stream at the town of Indija (SW Vojvodina, Serbia). Since there are no descriptions of larvae of Oxyethira spp., it is not possible to identify the collected specimens at the species level

The relationship between river basin specific (RBS) pollutants and macroinvertebrate communities

This study was carried out to identify the relations between macroinvertebrate communities and river basin specific (RBS) pollutants in the Danube River. The investigation was performed at 68 sites along 2,500 km of the Danube. Forward selection (FS), canonical correspondence analyses (CCA), the Spearman correlation coefficient (SC) and BIO-ENV analysis (to detect synergistic effects) were used to identify the relations between the macroinvertebrate dataset and selected biological metrics with RBS pollutants. Of the 20 analysed pollutants (preselected based on NORMAN network methodology), seven (2,4-dinitrophenol, chloroxuron, bromacil, dimefuron, amoxicillin, bentazon and fluoranthene) were found to significantly correlate with macroinvertebrate communities. BIO-ENV analysis revealed 3 subsets of environmental variables that were in high correlation with the biota resemblance matrix, consisting mainly of a combination of the above-mentioned pollutants. Our results indicate that there are significant correlations between chemical determinants and aquatic biota. Moreover, this study contributes to the validation of the methodology used for prioritization of RBS pollutants proposed by the NORMAN network

Testing different methods for sampling macroinvertebrates in aquatic ecosystems and examination of the possibility for their standardization

Rezime: U ovom radu razmatrane su različite tehnike prikupljanja uzoraka za izučavanje zajednica vodenih makrobeskičmenjaka, specifičnosti vezane za uzorkovanje pojedinih faunističko-ekoloških grupa, kao i poteškoće vezane za istraživanje tipova vodnih tela, ponaosob, na osnovu materijala prikupljenog sa ukupno 320 lokaliteta u periodu 2004-2016. na raznovrsnim tipovima, pre svega, tekućih voda u Srbiji. Deo podataka koji je razmatran sa ciljem utvrđivanja efikasnosti pojedinih metoda odnosi se i na lokalitete van Srbije – materijal sa Dunava (sektor dužine 2500 km, od Regenzburga do delte Dunava), Save (ceo tok reke, u dužini od 937 km) i reka Neretva i Bosna sa pritokama (u Bosni i Hercegovini). Predstavljen je detaljan protokol prikupljanja materijala i pratećih podataka, što podrazumeva opis metodologije uzorkovanja vodenih makrobeskičmenjaka, izbor i karakterizaciju lokaliteta, prikaz procedure obrade materijala, kao i razmatranje metoda za analize rezultata. Analiza rezultata vršena je upotrebom programskih paketa ASTERICS 4.0.4 (AQEM Consortium, 2002) i "Statistica" verzija 7 (StatSoft, Inc., 2004). Poređenje različith metoda uzorkovanja vezanih za zajednicu vodenih makrobeskičmenjaka, kao i za pojedinačne grupe makrobeskičmenjaka u okviru ove zajednice, uz poređenje sa prethodnim publikacijama koje razmatraju ovu problematiku, dalo je odgovore vezane za standardizaciju metodologije, uticaj pojedinačnih metoda uzorkovanja na rezultate istraživanja vezane za raznovrsnost i prostornu dinamiku zajednice vodenih makrobeskičmenjaka u različitim vodenim ekosistemima. Na osnovu dobijenih rezultata izvršena je optimizacija metodologije uzorkovanja vodenih beskičmenjaka za vodene ekosisteme Srbije, predložena je metodologija za određeni tip ekosistema kao i izbor adekvatnih metoda za određeni tip istraživanja, kao i za specifičnu grupu organizama (školjke) sa posebnim akcentom na velike i veoma velike reke (po tipologiji tekućih voda Srbije), koje predstavljaju kompleksne ekosisteme