Assessing the conservation status of the lower Una river basin using records of Adephagan Coleoptera Lucija Šerić Jelaska1, Martina Temunović2,3

1 Group for Systematic Zoology and Entomology, Department of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10 000 Zagreb, ; [email protected] 2 Association for Biological Research - BIOM, Sestinski dol 12, 10 000 Zagreb, Croatia; [email protected] 3 Department of Forest Genetics, Dendrology and Botany, Faculty of Forestry, University of Zagreb, Svetosimunska 25, 10 000 Zagreb, Croatia

Hydradephaga fam. Noteridae Geadephaga fam. Carabidae of Noterus clavicornis (De Geer, 1774) Abax carinatus (Duftschmid 1812) Abax paralellus (Duftschmid 1812) Introduction fam. Amara aenea DeGeer, 1774 Hyphydrus anatolicus Guignot, 1957 Anchomenus dorsalis (Pontoppidan 1763) Hydroglyphus geminus Fabricius, 1792 Anysodactylus signatus (Panzer 1797) Hygrotus (Coelambus) impressopunctatus Schaller, 1783 Carabid and Hydradephagan water possess a range of characteristics Asaphidion cyanicorne Pandelle 1867 Suphrodytes dorsalis Fabricius, 1787 Badister bullatus (Schrank 1798) usable for the evaluation of the conservation status of wetland habitats as Hydroporus palustris Linnaeus, 1761 Bembidion velox (Linnaeus 1761) Laccophilus hyalinus DeGeer, 1774 they have a strong role as environmental indicators. crepitans (Linnaeus 1758) Hydroporus angustatus Sturm, 1835 Brachinus psophia Audinet-Serville 1821 Hydrporus rufifrons O.F. Müller, 1776 Carabus cancellatus Illiger 1798 Hydroporus planus Fabricius, 1781 The aim of the research was to estimate the conservation value of the lower Carabus coriaceus Linnaeus 1758 Laccophilus minutus Linnaeus, 1758 Carabus granulatus Linnaeus 1758 course of the Una river, where it forms the border between Croatia and Bos- Laccophilus poecilus Klug, 1834 Carabus ullrichi Germar 1824 Liopterus haemorrhoidalis Fabricius, 1787 nia and Herzegovina. It is the part of the Croatian Ecological Network and a spoliatus (Rossi 1790) Agabus (Agabus) undulatus Schrank, 1776 Elaphrus aureus Ph. Muller 1821 Agabus (Gaurodytes) striolatus Gyllenhal, 1808 potential NATURA 2000 site. Harpalus affinis (Schrank 1781) Agabus (Gaurodytes) bipustulatus Linnaeus, 1767 Harpalus distinguendus (Duftschmid 1812) Rhantus (Rhantus) suturalis W.S. MacLeay, 1825 Harpalus pumilus Sturm 1818 Rhantus (Rhantus) bistriatus Bergsträsser, 1778 Nebria brevicollis (Fabricius 1792) Rhantus (Rhantus) consputus Sturm, 1834 Olistophus fuscatus Dejean 1828 quadriguttatus Lacordaire, 1835 Panageus crux-major Linnaeus, 1758 Colymbetes fuscus Linnaeus, 1758 Platyderus rufus (Duftschmid 1812) Hydaticus transversalis transversalis Pontoppidan, 1763 Poecilus cursorius (Dejean 1828) Dytiscus marginalis marginalis Linnaeus, 1758 Poecilus versicolor (Sturm 1824) Cybister lateralimarginalis lateralimarginalis DeGeer, 1774 Pseudoophonus rufipes (DeGeer 1774) Pterostichus anthracinus Illiger, 1798 Table 1: List of recorded Adephagan species Pterostichus melanarius (Illiger 1798) Pterostichus melas (Creutzer 1799) Pterostichus ovoideus (Sturm 1824) Stenolophus discophorus Fischer von Waldheim 1824 Results and discussion Here, we present the first results on adephagan diversity of this area. We recorded 54 species in overall (fam. Noteridae 1 species, fam. Dytisci- dae 23 species, fam. Carabidae 30 species) (Table 1). Highest number of hydrophilic carabid species was recorded in Dubica (Una 1) and Dvor (Una 5) sites (Figure 4). Majority of the rare Hydradephagan species were recorded in Una 3 site in temporary flooded meadows (Figure 5). The richest Hydradephagan community was found in densely vegetat- ed stagnant water at the river shoreline. Most diverse habitats with highest Figure 1: Location of the lower Una course and six sampling sites along the Figure 2 &3: Sampling sites- A Pond and Una river river course number of rare and hydrophilic species are flooded meadows and willow banks. Highest rarity index stands for Una 1, Una 3 and Una 5 sites respec- Materials and Methods tively (Table 2) with wet meadows and willow banks. The lower Una valley has undergone low human impact with well preserved Sampling was conducted along the river Una and its narrow coastal area in riparian habitats, hence representing highly valuable site for the investigated spring from April untill June in 2009. (Figure 1). group of Coleoptera. We used a D-framed pond net and pitfall traps to collect beetles at six se- The maintenance of natural course enabling periodical flooding of surround- lected sites along the research area (Figure 1). ing grasslands, suitable agriculture practices as well as restricted vegetation removal management are necessary for the effective conservation of such We comprised a variety of microhabitats differing in vegetation density or rare habitat types. disturbance caused by water flow: open fast-flowing and slow-flowing wa- ter (with or without vegetation), stagnant water, side canal, fish pond, peri- odically flooded grasslands, agricultural land (Figure 2 and 3).

Rare species/Sites Una 1 Una 2 Una 3 Una 4 Una 5 Una 6 Agabus (Gaurodytes) striolatus (Gyllenhal, 1808) 1 0 0 0 0 0 Hyphydrus anatolicus Guignot, 1957 0 0 1 0 0 0 Rhantus (Rhantus) consputus Sturm, 1834 1 0 0 0 0 0 Laccophilus hyalinus DeGeer, 1774 0 0 0,5 0 0 0,5 Agabus (Agabus) undulatus Schrank, 1776 0 0 1 0 0 0 Cybister lateralimarginalis lateralimarginalis DeGeer, 1774 0 0 0,5 0 0 0,5 Hydroporus rufi frons O. F. Müller, 1776 1 0 0 0 0 0 Brachinus crepitans (Linnaeus 1758) 0,5 0 0 0 0,5 0 Figure 4: Species richness with number of hygrophilic carabids Figure 6: Cluster analyses of species richness in different habitats Brachinus psophia Audinet-Serville 1821 0,5 0 0 0 0,5 0 collected on 6 sites (See map). Carabus granulatus Linnaeus 1758 0,33 0 0 0,33 0,33 0 Elaphrus aureus Ph. Muller 1821 1 0 0 0 0 0 Olistophus fuscatus Dejean 1828 0 0 0 0 0 1 Panageus crux-major Linnaeus, 1758 1 0 0 0 0 0 una6 Pterostichus anthracinus Illiger, 1798 1 0 0 0 0 0 una 5 Pterostichus ovoideus (Sturm 1824) 0 0 0 0 1 0 IUCN IUCN una 4 Stenolophus discophorus Fischer von Waldheim 1824 0 0 0 1 0 0 other species Species Species Rarity index 7,33 0 3 1,33 2,33 2 rare species Cat Cat una 3 Brachinus (Brachinus) psophia Panagaeus (Panagaeus) cruxmajor Table 2: Rarity indices for six plots taking account the occurences of some rare species according to literature data. NT NT (Rarity (R) = 1/n; n=No. of occurences) una 2 Audinet-Serville, 1821 Linnaeus, 1758

una 1 Asaphidion cyanicorne quarnerese Elaphrus aureus VU LC References Schatzmayr 1914 Ph. Muller 1821 Hurka K (1996) Carabidae of the Czech and Slovak Republics. Kabourek, Zlin 0 2 4 6 8 10 12 14 Freude H, Harde KW, Lohse GA (1976) Die Kafer Mitteleuropas, Band 2. Goecke&Evers, Krefeld Thiele HU (1977) Carabid beetles in their environments. Zoophysiology and ecology 10. Springer Verlag, Berlin Figure 5: Species richness with number of rare hydradephagan Table 3: Croatian IUCN Red list and rare Adephagan species recorded during this survey Trautner J, Geigenmuller K (1987) Sandlaufkafer Laufkafer. J. Margraf Publisher, Aichtal species collected on 6 sites (See map). Red list of carabid species in Croatia. http://www.dzzp.hr/vrste/crveni-popis-biljaka-i-zivotinja-rh Csabai Z, Nosek JN (2006) Aquatic fauna of Gemenc landscape protection area south (Coleoptera: Hydradephaga, ). Acta Biol. Debr. Oecol. Hung 14, 67–76.