Naslov
Status and trends of freshwater ichthyofauna in Croatia

Autori
Duplić, Aljoša ; Mrakovčić, Milorad ; Mustafić, Perica ; Brigić, Andreja ; Buj, Ivana ; Ćaleta, Marko ; Zanella, Davor ; Marčić, Zoran ;

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
XII European Congress of Ichthyology (ECI XII) : Book of Abstracts / Buj, Ivana ; Zanella, Linda ; Mrakovčić, Milorad ; - Zagreb : Hrvatsko ihtiološko društvo, 2007, 158-159

Skup
European Congress of Ichthyology (12 ; 2007)

Mjesto i datum
Cavtat, Hrvatska, 09.09.2007. - 13.09.2007

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
freshwater ichthyofauna; Croatia

Sažetak
The freshwater ichthyofauna of Croatia is divided zoogeographically into two catchments. This work presents an overview of the status, ecological characters and diversity of the freshwater fish of the Danube and Adriatic catchments in Croatia. The various type of small or large lakes, reservoirs, oxbows and waterfowls, streams, rivers, and artificial irrigation channels provide a wide range of habitats for fish species. The total length of all natural and artificial watercourses in Croatia is estimated at about 21, 000 km. Croatia has few natural lakes, with only 12 larger than 2 km2, 6 of which are artificial. The Danube basin covers 62% of Croatia’ s territory and is inhabited by 81 freshwater fish species. The most important ichthyological areas are the Sava and Drava Rivers, each possessing a large swamp-floodplain complex. The Adriatic basin covers 28% of Croatia’ s territory and is inhabited by 88 species. This basin can be divided into the Istrian peninsula and the coastal and karst region, most of which are part of the Dalmatia region. In comparison with the rivers of the Danube basin, the Adriatic rivers are predominantly short and isolated, with substantial underground watercourses flowing through karst systems. The largest and most important in terms of ichthyofauna are the Zrmanja, Krka, Cetina and Neretva Rivers. To date, a total of 151 fish species have been recorded in Croatia, 21 of which dwell in brackish and salt waters. The terrestrial waters of Dalmatia are of particular value in the Adriatic basin. With 44 Mediterranean endemisms, 41 of which are endemic to the Adriatic basin, Dalmatia represents one of Europe’ s top centres of endemism. A total of 7 endemics are found in the Danube basin, of which only 1 is endemic to Croatia. The varied habitats which are particularly specific to and specialized in this region have been drastically changed in recent years by human activities. Though the introduction of alien species into open systems is forbidden by law, Croatia’ s ichthyofauna still contains 16 allochthonous species. Of the total number of freshwater fish species, 91 species or 60% of all of Croatia’ s freshwater ichthyofauna are considered threatened by IUCN criteria.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

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