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Spleoronilačka istraživanja izvora Gradole

Na poziv SD Proteus i Silvija Legovića-Kavasakija, u sklopu projekta Proteus: Projekt zaštite čovječe ribice, koje vodi Hrvatsko herpetološko društvo-HYLA, obavljena su biospeleološka i speleoronilačka istraživanja izvora Gradole. Izvor Gradole kao jedan od najizdašnijih izvora Istre do sada nikada nije detaljnije speleoronilački i biospeleološki istraživan, podatci o speleomorfologiji, speleogenezi, osnovni podatci o smjeru i duljini pružanja podzemnih kanala nikada nisu prikupljani. Također nikada nije napravljena biospeleološka inventarizacija izvora kako bi se saznala da li u izvoru žive ugrožene podzemne vrste. Upravo zbog nedostatka ikakvih podataka, a  u sklopu projektnih aktivnosti vezanih uz monitoring čovječe ribice u Pincinovoj jami u Taru, obavljena su preliminarna istraživanja izvora Gradole.

Slika: Speleoronioc se priprema za zaron u izvor Gradole (foto: Branko Jalžić)

U sklopu preliminarnih istraživanja obavljena su 2 urona. U prvom uronu sudjelovala su 3 ronioca, a u drugom uronu sudjelovala su 2 ronioca. Prvi uron trajao je 50 minuta, a drugi uron trajao je 55 minuta.Speleoronioci spustili su se do dubine od 25 m u uvjetima vrlo loše vidljivosto od 1-1.5.m.

 Rezultati istraživanja da su speleoronioci prošli 125m kanala i da postoji potencijal za nastavak istraživanja te da su Gradole stanište ugrožene vrste čovječe ribice, i drugih pripadnika podzemne faune što do sada nije bilo poznato.

 

Slika: Čovječa ribica otkrivena u kanalu izvora Gradole na 50-tak metara od ulaza na 15 metara dubine (foto: Efrain Chavez Solis)

 

Održano predavanje u Samoboru

Članovi Hrvatskog herpetološkog društva - HYLA održali su još jedno predavanje u nizu predavanja o podzemlju i čovječjoj ribici u sklopu Projekta o zaštiti čovječje ribice. Katarina Koller, član i predavač, upoznala je učenike drugih razreda o biologiji, zaštiti, rasprostranjenosti čovječje ribice te je učenicima prikazan isječak iz filma BBC Attenboroughs Ark. Dokumentarni film je snimljen sa ekipom iz HHD HYLA te predstavlja čovječju ribicu kao jednu od 10 životinja koje bi Attenborough spasio od izumiranja. Zahvale profesorima koji su jako lijepo organizirali dvoranu i skupili zainteresirane učenike u velikom broju. 

Slika 1. Predavanje o čovječjoj ribici

 

 Slika 2. Prikazan isječak iz filma Attenboroughs ark

 

 

Cave diving and research of Ombla source and accumulation Orašac

On February 23rd and 24th, HYLA research team visited the Ombla river spring and Orašac accumulation (Bosnia spring). The goal of the research was to confirm the finding of Delminichthys ghetaldii (a species of ray-finned fish in the Cyprinidae family), which was successfully accomplished for the Ombla source. Eleven specimens were counted in Ulazna kaverna. In other parts of the system due to high water level it was not possible to make the dive, resulting in continuation of the research in spring. Delminichthys ghetaldii was not found in Orašac accumulation; however, other species were recorded.

 

Pictures 1. and 2. Cave diving at Ombla spring

Pictures 3. and 4. Orašac accumulation research

We visited the Proteus site in village Prud (Neretva)

On February 22nd – 25th HYLA researchers involved on the PROTEUS project visited the olm site in Prud village (near the town of Metković). One olm specimen was found in a manhole next to an enclosed Prud spring, and a tissue sample was taken for DNA analysis. In is interesting that Branko Jalžić-Bančo visited the site a couple of times and found nothing. In December of this year he found 3 specimens, after 3 days none, in January 2 specimens and in February of 2015. he found 7 specimens.

Based on Bančo's findings, the HYLA team was glad they managed to find at least one olm specimen.

 

Monitoring of Proteus in Pincinova pit

On January 10th-11th 2015. members of Croatian herpetological society – HYLA, with the help of Croatian Mountaineering Association SO Željezničar and Silvio Legović-Kawasaki from SD Proteus i SD Pula carried out a second olm monitoring in Pincinova cave. 32 specimens were counted, mostly juveniles. Photo documentation of the site and the underground lake in the cave was performed, for which the boat and oars were lowered 50m deep into the cave. 

9 speleologists were involved and great photographs were taken. On January 9th 2015. the project was presented in SD Pula, and a co-operation was reached with the speleologists concerning the search for possible new olm sites. 

   
   
   
   

22. Međunarodni biospeleološki kongres u Meksiku

Croatian Herpetological Society HYLA attended the  „22ND INTERNATIONAL CONFERENCE ON SUBTERRANEAN BIOLOGY“ which was held from August 31st- September 5th 2014. in Juriquilla, Querétaro, México.

  

The lectures on Proteus anquinus was held by Dušan Jelić and Katarina Koller. Dušan Jelić presented the results of the research on the olm population ecology. This research presents the first data on olm population density and ecological interaction with other vertebrate species in their environment. Furthermore, he presented new methods for further ecological research. Katarina Koller presented the distribution and classification of the olm findings in Croatia, Bosnia and Herzegovina and Montenegro.

The conference participants have been successfully familiarized with the olm protection project in Croatia and Bosnia and Herzegovina, and the activities carried out by HYLA, and the members of HYLA have gained experiences and exchanged knowledge with numerous experts in the field of subterranean biology. Along with Croatia, experts, professors and project managers from South and North America, Australia and Europe attended the conference.

Children and youth education

In the last two months several educational lectures were held on the topic of olm protection in Croatia. The goal of these educational workshops is to inform the children and youth with the olm (Proteus anguinus) lifestyle. It is important to sensitize younger generations so they can contribute to the protection of this unique animal that inhabits exclusively subterranean Dinaric karts regions. So far, the lectures have been held in several cities along Croatia and Bosnia and Herzegovina:  Zagreb, Karlovac, Varaždin, Slunj, Sarajevo, Banja Luka.

Laura Petti, Zagreb

 

 

Mario Slatki, Varaždin

 

 

Ilona Tot, Slunj

 

 

Emina Šunje, Sarajevo

 

 

Goran Šukalo, Banja Luka

 

 

Ana Ćurić, Banja Luka

 

 

 

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