Showing posts with label field trips. Show all posts
Showing posts with label field trips. Show all posts

Thursday, November 8, 2012

Russian expedition - part I


In 2010, Saša got acquainted with Dr. Oleg Askeyev, the head of Biomonitoring Laboratory at the Institute of Problems in Ecology and Mineral Wealth, Tatarstan Academy of Sciences in Kazan. He found out about us via this website. Due to our common interests, we saw a potential of mutual collaboration; in August 2011, Saša, Matjaž Červek (my outdoor buddy) and I responded to a Russian invitation for a 14-days expedition to pre-Ural area in Tatarstan, Orenburg and Bashkiria, in the first place to perform Thymallus thymallus sampling, which took place in the middle Kama and upper Ural river systems.

 > The expedition team: Igor (Oleg’s twin brother, ichthyologist), Aleš, Oleg, Matjaž, Saša, Sergey Monakhov (ichthyologist, PhD student), Rustem the driver, Dmitry (biologist and excellent cook in the field) and the famous UAZ 4WD van. Saša Belayev (small mammal  expert and curator of the Natural history museum) is taking the picture.

From my perspective, the celebrity of this expedition was grayling; we found them in small headstreams, which are in Slovenia normally populated with brown trout only. This is only one of several differences that make the Caspian grayling distinct from the Sava ones.

Net was the main fishing tool; quite some skill is needed to use it effectively.

For more details, see Field trips.



Friday, October 1, 2010

Nate's field trip

Nate was with Angling club of Tolmin for a week.

Tuesday, August 10, 2010

Morocco 2010

In June we organized another field trip to Morocco. Although without our Moroccan colleagues, we did it in a frame of common project initiated in 2006. The main idea was to sample fish in the area of Tangier which appeared to be, as suggested by our preliminary results, a crucial location for untangling colonization patterns of trout in North Africa. In order to assure success the old team was joined by Gašper (our Crocodile hunter). Massive excavation works taking place all over the potentially interesting sampling sites along with our unfamiliarity with the area were probably responsible for complete failure. Some pictures of more successful part of this trip are presented below, all pictures were taken by Johannes Schöffmann.

Sunday, May 23, 2010

Ožbalt sampling

Searching for genetically pure populations of brown trout in Slovenia is still going on. This time we went to the Drava valley close to the hydroelectric power plant Ožbalt. Mr. Grace, the fish-warden of the Fishery Association Radlje ob Dravi, led us to the tributaries Kapusov potok and Suha. We were sampling above very impressive dams, and both streams have been unmanaged at least since 1980 according to Mr. Grace. Sounds promising.

Tuesday, November 24, 2009

Gödöllő

Last week, Dušan, Zoran and Aleš spent four pleasant days in Hungary visiting Dr. Ákos Horváth and his team working at the Department of Aquaculture, Szent István University in Gödöllő. The visit was made in a frame of Slovene-Hungarian bilateral project "Cryopreservation of sperm and establishment of a cryobank of the Adriatic grayling (Thymallus thymallus) from the Soča river".

Besides doing some cryo-lab work, we also took this opportunity to sample three locations in Bükki Nemzeti Park, supposedly inhabited by native brown trout populations (genetic testing underway). We also visited Lillafüred trout breeding farm close to Miskolc run by Mr. György Hoitsy. Here we ate an excellent cat-fish goulash with baked pasta and white cheese cooked by his wife.

On the last day of our visit, the Hungarian colleagues along with Dr. Zoran Spirkovski from Hydro Biological Institute (Ohrid, Macedonia) presented their initiative for organizing the 2nd Conference for Conservation & Management of Balkan Freshwater Fishes (COMBAFF), which should be held in September 2010 in Hungary. Aleš was invited to participate in scientific committee... OK, he couldn't say no.

Monday, August 17, 2009

Second trip to Morocco (August 2009)

First trip to Morocco was last year (here & here). During the second field trip two more sampling sites were added, a few more locations checked were troutless. Participants were Aleš, Saša, Johnnes & daughter. For more pictures click here.

Morocco 2009

ADDED: Just received a note from Aleš. This trip was actually the third expedition to Morocco. The first was already in June 2006, predating this blog. The participants at that time were Johannes with his daughter, Aleš with his wife and Said of the University Cadi Ayyad.

Thursday, March 19, 2009

Vrljika field trip, March 09

In a frame of collaboration with prof. dr. Ivan Bogut from Osijek University, Mr. Ante Mikulić, a representative of Angling club Proložac and our old friend Dušan Jesenšek from RD Tolmin, BTRG organized another field trip to Imotsko polje, in the first place to sample minnows. We were again accompanied with a photographer Arne Hodalič and also with his friend Matej Mihailovski; they were mostly interested in taking photos of the Vrljika softmouth trout and Red Lake scenery.

It was also our intention to meet Manu Esteve and John Zablocki there, who were in the mean time trying hard to film spawning behaviour of the softmouth trout in the neighbouring Neretva River. Unfortunately, we somehow didn’t make it and we are now trying to organize this meeting in Slovenia, were Manu is currently making a stay waiting for Hucho spawning.

in the name of sciencesalmo obtusirostrissalmo obtusirostris

Wednesday, December 17, 2008

An interview and a fishing story

James Prosek was interviewed by The Itinerant Angler, you can also download the interview (mp3, 41 MB). Among other things he mentioned our group and one of the more memorable field trip. He mentioned that he personally wasn't there, but Steve and Aleš often entertain us with the story.



Fishing story

In 2004 a field trip to Montenegro was organized, involving people from Austria, Slovenia and Serbia, along with local biologists and fisherman. The primary motivation for this trip was to search for the extremely rare and perhaps extinct form of softmouth trout from the Zeta River. The group was well equipped to sample trout, bringing several experienced fly-fisherman, an inflatable boat, and a 5 KW stationary electro-fishing generator, lugged all the way from Austria. The first glimpse of the Zeta generated quite a bit of excitement in this fish hungry crew. The river was surprisingly large and deep, lined with overhanging trees, and teeming with invertebrate life. While we did not necessarily expect to immediately find softmouth trout, we assumed that other trout would be plentiful. However, it quickly became painfully obvious that our experienced and well-equipped crew lacked a certain something necessary to catch Zeta River fish. The first reaction was natural – there are no fish! But each evening around sunset a local guide, Mlađen, who was observing us with some amusement the whole time, slipped away from the café veranda overlooking the Zeta - within an hour or so five or six plump freshly brown trout were slapped down before our eyes. Suspicions, confusion and frustrations were being muttered among us before the fourth evening when Mlađen offered to take Steve along and open Zeta’s door of enlightenment. Some may have thought there was a pond or hatchery around the bend that Mlađen would finally reveal, but instead he pulled one shy trout after another off the bottom of the Zeta with a Tyrolean nymph rig, sometimes from the same run where Steve had just thrown the same rig, 20 times. The rig was key, but not in anyone’s hands as it seemed that only Mlađen had some kind of Dr. Dolittle-like bond with Zeta’s trout. Nonetheless, even he could not come up with any softmouth, are real quarry.

Nearing the end of our week, the pessimism had reached its peak and some of us took a side trip to visit the famous monastery Ostrog, nestled into the high cliffs of the upper Zeta valley. According to common belief, wishes made in certain holy nooks of the monastery can come true. Maybe this is really so, because later in the day upon returning to the river we were approached by a local man who had heard of our struggles to find softmouth trout. He claimed to know where some were, in a small tributary of the Zeta, a few hundred meters from that all too cosy café on the banks of the Zeta. This was our last chance, though we were skeptical. Our skepticism increased as we gazed into the little stream’s clear waters which, like those of the Zeta, revealed no image worthy of even a mirage of a trout. But Johannes, the Carinthian baker who doubles as one of the more well-known explorers of exotic populations of Salmo, quickly donned his snorkelling attire, and made a survey more reliable than any we could have managed with fly lines or electrofishing gear. There were indeed softmouth trout in the stream!

Now we just needed to catch a few. A circus-like atmosphere soon developed, as we dragged the inflatable boat and electro-fishing gear across a meadow, attracting not only an increasing number of people, but a local television crew as well. As fate would have it, the Zeta softmouth, like the Zeta brown trout seemed immune to electricity, managing to stay on the move and just outside of the field around the anode, as if they were well trained. Our growing frustration was being intently monitored by Đoko, the guy who told us about this secret location. Afterall, he had PROMISED we would catch fish. Suddenly he couldn't stand it any more; he slipped into his wet suit, complete with mask, snorkel and fins and waded slowly into the shallow borders of an otherwise three meter deep pool. Observing his gesticulations, we slowly realized what his intention was: he wanted to dive with the anode pole in his hand and try to “harpoon” the fish with the electric field from a close distance. As the vision of this Rambo-esque plan unfolded in everyone’s minds there were varying degrees of resistance, ridicule and shock. With television cameras ready to roll, a multilingual cacophony rose around the pool as each person attempted to define their level of involvement, ranging from pure disassociation to neutral curiosity and on to legal culpability as expressed by Steve who had organized the Austrian crew and University owned electric-fishing set-up. He screamed: “No, no, no…!” But Danilo, from the University of Montenegro tried to explain to Steve that the man had indeed promised we would catch softmouth, and thus, by some rural code of honour he was determined to deliver, and there was nothing we could do to stop him. The decision was made to proceed, but with pre-determined hand signals and a hand on the off/on switch of the generator. Đoko finally got hold of the pole and quickly dove into pool. His hand went up, signaling for the juice, but he quickly emerged shaking his head in disappointment as the generator was correspondingly shut off. He dove again, gave the sign and everyone gasped at the sight of a swirl and a few bubbles – the electricity was only on for a few seconds, but Đoko emerged triumphantly with a softmouth trout in his net, igniting a cheer and celebration on the banks as if a golden-goal had just crossed the net. The act was repeated and several softmouth were landed in a similar fashion.

There were long debates on the dangers and dynamics of electric currents in water, of grounds and wet-suits and insulation. The popular outcome of this action was most likely the result of the fact that the man was indeed quite distant from both the anode and the cathode, with the electric field held out several meters in front of him at the end of a long anode.

P.S. Please note that the authors adamantly discourage anyone from repeating the actions described in this story. Fishing with electricity can be dangerous and should only be done by licensed operators, and all safety regulations should be followed, which in most countries explicitly forbids any form of diving during a sampling action.

Tuesday, September 30, 2008

Field trip (sep 2008) - photos

As promised, here are pictures from Morocco. Most of pictures are by Johannes and some from Aleš's trip from 2006. Saša's camera was stolen somewhere on the way back home.


Morocco

Tuesday, September 23, 2008

Field trip (sep 2008)

BTRG went to Morocco trying to get more brown trout samples for genetic analysis being performed in co-operation with Mohamed Ghamizi and Said Janjani, both from University Cadi Ayyad, Marrakech, and Patrick Berrebi. Aleš, Saša and Johannes crisscrossed the country searching mainly for brown trout from the Mediterranean drainage.

Brown trout of Atlantic lineage was recently found in Sicily, therefore populations in North Africa might represent a link to populations of Atlantic lineage in Spain. Preliminary genetic analysis of Moroccan brown trout confirmed that at least those from the Atlantic drainage appear to be closely related to brown trout from Iberian Peninsula. Previously, Bo Delling has studied Moroccan brown trout from morphological perspective, now, we intend to analyse them also from the genetic perspective.

Picture gallery will be uploaded in the next few days.


Field trip

Thursday, May 22, 2008

Plans for this summer

Summer - no students, too hot for latex gloves, low water level, fish have nowhere to hide. Time to get as many fin clips as possible. Expect pictures in early August and late September.

(Peter provided the guidebook scennery. And a drink for the photographer.)

Planning field trips