| Abstract | Topic 5: Invasive alien species - early warning, priority species and pathways, risk
assessment and management
40th IAD Conference 8 9 2014, Sofia, Bulgaria
Alien bivalve mollusk occurrence, population dynamics and impact: Lake Maggiore (Italy) and the Danube River (Bulgaria) case studies
TEODORA TRICHKOVA1, ROSARIA LAUCERI2, IVAN BOTEV1, LYUBOMIR KENDEROV3, ZDRAVKO HUBENOV4, VESELA EVTIMOVA1, ALEXANDER KOTSEV, IRENE GUARNERI, SALVATORE CALVARUSO, NICOLETTA RICCARDI2
1 Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, 2 Gagarin Str., Sofia 1113, Bulgaria; E-mail: trichkova@zoology.bas.bg
2 National Research Council - Institute of Ecosystem Study, Largo Tonolli 50, 28922, Verbania-Pallanza, Italy; E-mails: r.lauceri@ise.cnr.it; n.riccardi@ise.cnr.it
3National Museum of Natural History, Bulgarian Academy of Sciences, 1 Tsar Osvoboditel Blvd., Sofia 1000, Bulgaria
4 Biological Faculty, Sofia University, 8 Dragan Tsankov Blvd., Sofia 1164, Bulgaria
Nowadays, the presence of alien species is a worldwide problem, especially when the presence of the new species has the character of a biological invasion which threatens biological diversity and affects ecosystem services thus causing environmental, economic and social damages. The freshwater bivalve Dreissena polymorpha is included among the 100 World's Worst Invasive Alien Species (IUCN/SSC ISSG), and Corbicula fluminea and D. polymorpha are listed among the 100 Worst Invasive Alien Species in Europe (DAISIE). Further, the Chinese Pond Mussel Anodonta woodiana and the Quagga Mussel Dreissena rostriformis bugensis are becoming globally spread in last decades, causing biodiversity and economic losses. Here, we show how different environments, such as a big subalpine lake, Lake Maggiore (Northern Italy) and the second longest river in Europe, the Danube River (Bulgaria), are affected by similar problems: the invasion by non-native freshwater bivalves; and how these different habitats influence the occurrence and population dynamics of the invaders.
Presence-absence maps have been prepared to present the distribution of the bivalve alien species (C. fluminea, D. polymorpha, A. woodiana and D. rostriformis bugensis) in the two different freshwater bodies, Lake Maggiore and the Danube River (Bulgaria). In addition, to evaluate the potential impact of C. fluminea, which is rapidly becoming the dominant littoral species in Lake Maggiore, a field and mesocosm study of its population dynamics and reproductive cycle is presented. The results from the study of quantitative parameters and habitat characteristics of C. fluminea and other alien bivalves in the Bulgarian sector of the Danube River and its tributaries are also presented.
Key words: Alien species, freshwater bivalves, Corbicula fluminea, Dreissena spp., the Danube River basin, Lake Maggiore.
Acknowledgements: This study was supported within the frames of the East and South European Network for Invasive Alien Species (ESENIAS) and the International Association for Danube Research (IAD), and partly funded by the Rotary Club project "One Lake, three |
| Text | 287777 2014 Alien bivalve mollusk occurrence, population dynamics and impact Lake Maggiore Italy and the Danube River Bulgaria case studies. TEODORA TRICHKOVA, ROSARIA LAUCERI, IVAN BOTEV, LYUBOMIR KENDEROV, ZDRAVKO HUBENOV, VESELA EVTIMOVA, ALEXANDER KOTSEV, IRENE GUARNERI, SALVATORE CALVARUSO, NICOLETTA RICCARDI 1 Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, 2 Gagarin Str., Sofia 1113, Bulgaria; E mail trichkova@zoology.bas.bg 2 National Research Council Institute of Ecosystem Study, Largo Tonolli 50, 28922, Verbania Pallanza, Italy; E mails r.lauceri@ise.cnr.it; n.riccardi@ise.cnr.it 3 National Museum of Natural History, Bulgarian Academy of Sciences, 1 Tsar Osvoboditel Blvd., Sofia 1000, Bulgaria 4 Biological Faculty, Sofia University, 8 Dragan Tsankov Blvd., Sofia 1164, Bulgaria Published version INTERNATIONAL ASSOCIATION FOR DANUBE RESEARCH IAD , IAD 40th Anniversary Conference, The Danube and Black Sea Region Unique Environment and Human Well Being Under Conditions of Global Changes, Sofia, Bulgaria 17 20 June 2014 Internazionale Contributo Topic 5 Invasive alien species early warning, priority species and pathways, risk assessment and management 40th IAD Conference 8 9 2014, Sofia, Bulgaria Alien bivalve mollusk occurrence, population dynamics and impact Lake Maggiore Italy and the Danube River Bulgaria case studies TEODORA TRICHKOVA1, ROSARIA LAUCERI2, IVAN BOTEV1, LYUBOMIR KENDEROV3, ZDRAVKO HUBENOV4, VESELA EVTIMOVA1, ALEXANDER KOTSEV, IRENE GUARNERI, SALVATORE CALVARUSO, NICOLETTA RICCARDI2 1 Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, 2 Gagarin Str., Sofia 1113, Bulgaria; E mail trichkova@zoology.bas.bg 2 National Research Council Institute of Ecosystem Study, Largo Tonolli 50, 28922, Verbania Pallanza, Italy; E mails r.lauceri@ise.cnr.it; n.riccardi@ise.cnr.it 3National Museum of Natural History, Bulgarian Academy of Sciences, 1 Tsar Osvoboditel Blvd., Sofia 1000, Bulgaria 4 Biological Faculty, Sofia University, 8 Dragan Tsankov Blvd., Sofia 1164, Bulgaria Nowadays, the presence of alien species is a worldwide problem, especially when the presence of the new species has the character of a biological invasion which threatens biological diversity and affects ecosystem services thus causing environmental, economic and social damages. The freshwater bivalve Dreissena polymorpha is included among the 100 World s Worst Invasive Alien Species IUCN/SSC ISSG , and Corbicula fluminea and D. polymorpha are listed among the 100 Worst Invasive Alien Species in Europe DAISIE . Further, the Chinese Pond Mussel Anodonta woodiana and the Quagga Mussel Dreissena rostriformis bugensis are becoming globally spread in last decades, causing biodiversity and economic losses. Here, we show how different environments, such as a big subalpine lake, Lake Maggiore Northern Italy and the second longest river in Europe, the Danube River Bulgaria , are affected by similar problems the invasion by non native freshwater bivalves; and how these different habitats influence the occurrence and population dynamics of the invaders. Presence absence maps have been prepared to present the distribution of the bivalve alien species C. fluminea, D. polymorpha, A. woodiana and D. rostriformis bugensis in the two different freshwater bodies, Lake Maggiore and the Danube River Bulgaria . In addition, to evaluate the potential impact of C. fluminea, which is rapidly becoming the dominant littoral species in Lake Maggiore, a field and mesocosm study of its population dynamics and reproductive cycle is presented. The results from the study of quantitative parameters and habitat characteristics of C. fluminea and other alien bivalves in the Bulgarian sector of the Danube River and its tributaries are also presented. Key words Alien species, freshwater bivalves, Corbicula fluminea, Dreissena spp., the Danube River basin, Lake Maggiore. Acknowledgements This study was supported within the frames of the East and South European Network for Invasive Alien Species ESENIAS and the International Association for Danube Research IAD , and partly funded by the Rotary Club project One Lake, three The Danube and Black Sea Region Unique Environment and Human Well Being Under Conditions of Global Changes INTERNATIONAL ASSOCIATION FOR DANUBE RESEARCH, 40th Anniversary Conference, IAD40_Book_of_abstracts.pdf Abstract in atti di convegno rosaria.lauceri LAUCERI ROSARIA nicolettarita.riccardi RICCARDI NICOLETTA RITA |
