Field Notes: Large Carnivores of Sarıkamiş in Turkey

Field Notes: Large Carnivores of Sarıkamiş in Turkey


September 8, 2025
Above: A 36 kg male wolf (Canis lupus) named "Shaggy" by taggers with the environmental organization Kuzey Doga. Not more than five minutes after being tagged, the animal was gone.

Nathan Murthy, a senior at the University of Utah majoring in

Earth and Environmental Science recently returned from doing field work in Turkey. 

This is the second of two reports he has filed.

If you were to look at a map of the town of Sarıkamiş in Eastern Türkiye, you would think that its coniferous forests extend forever.

A good example of the forest edges here. Everything eventually surrenders to the trillions of blades of grass. Credit: Nathan Murthy

But when you zoom out, it becomes apparent that the town, perhaps best known today for its ski resort, stands alone. A stronghold of pine trees in a sea of grass.

Amongst these forests are some of the world's top predators: brown bears (Ursus arctos), gray wolves (Canis lupus), and lynx (Lynx lynx). Using GPS Collars, the environmental organization KuzeyDoğa has been tracking all three. I was lucky enough to join these operations.

It takes a team to catch these animals: my professor Çağan Şekerçioğlu who started KuzeyDoğa, wolf biologist professor Josip Kusak, to nail down the methods, and biologist Emrah Çoban, who works tirelessly to manage the site. Put all this together, along with numerous volunteers, and you get the first large carnivore project in Türkiye. Since 2011, 179 animals have been tagged (103 brown bears, 50 wolves, 25 Eurasian lynx, and one wild boar), each individual contributing valuable data for conservation.

Curious about how it all works? Join me from my first day on.

Traplines and Barbeque

Driving around with Dr. Kusak and Nate Roberts checking the traps. Credit: Nathan Murthy

Breakfast is at 6 am. Everyone discusses terms like "traplines," "the last forest," and "barbecue." I only knew the last term. Traplines are self-explanatory:  traps dispersed through a certain area. The last forest is the location of one of the traplines to our northwest. There are also traplines in "Hamamlı" to the East, the "National Park" to the north, the "West Forest" to the (fill in the blank), and the "Central Forest" directly in the middle. All told there are five traplines and two cars to check them daily.

Dr. Kusak, Nate Roberts, a University of Utah master's biology student, and I traverse the bumpy dirt roads of the West Forest. We suddenly stop. "Nothing," Kusak says.

"Nothing," Nate confirms.

We continue driving along but I am completely lost. Soon enough, I learn we have passed a wolf trap. Eventually, I learn the design. Underground, there's a rubber foothold with a trigger point in the center and a chain attached to it . . . and an anchor. Aboveground, a sponge doused in rotting meat, liver and fecal matter. In theory, wolves will investigate the pungent sponge and trigger the foothold. The anchor, dragging behind the fleeing animal, will catch on a root or a bush, stopping them, literally, in their tracks.

We check the remaining traps all with the same result, nothing.

Then comes the final term I heard at breakfast: "barbecue." We eat grilled meats and homemade cake followed by a leisurely volleyball session.

The day is over, or so I think.

The Ghost in the Cage

Dispersed throughout the forests are box traps, large, metal boxes with sliding doors. Within each box is a small wire that shuts the doors when triggered. The trap is designed to alarm us when it is set off. At about 10 p.m. that night, the alarm goes off. We rush over immediately.

A 360 kg brown bear (Ursus arctos) workers named "Karadayı." The collars automatically fall off the bear’s neck at the end of two years of monitoring. Credit: KuzeyDoğa Society.

Within the trap is a Caucasian lynx. We tranquilize the animal and carefully lay it on a blanket. We take blood samples and measurements. Finally, we place a GPS tracking collar around its neck. Then, we sit and wait for it to gain consciousness and return to the forest. It is difficult to see an animal like a lynx up close, to feel it with your own two (gloved) hands. It’s surreal in that these animals are ghosts. They may never be seen by anyone again.


The Bear Incident

I assume our luck will run dry for several days, but it doesn't. The next day, our other car finds a small brown bear cub stuck in a trapline. We rush to the other car to see it. When we arrive, the bear is still under anesthesia. Still, we drive carefully in our approach not to startle it.

The second I open my door I hear a loud roar. The team runs back to our car, but the back door is still open. The bear tries its best to infiltrate. Luckily, our car horn scares it away.

Bears are no joke, but after it is all done and everyone is safe, all we could do was laugh.

Wolves and Picnicking

A familiar face here in faraway Sarıkamiş. Credit: Nathan Murthy

Several days later while routinely checking a trapline Josip announces, "Trap missing!" In a nearby bush is a 36-kg gray wolf. Josip quickly tranquilizes it, like the tactician he is. As we bring it back and lay it down, I'm thinking that it kinda just looks like a shaggy stray dog.  It turns out the wolf is in the process of shedding its winter coat.

"We should name it Shaggy," I say.

"Shaggy, sounds good, " Josip agrees.

In the KuzeyDoğa database, this wolf will now be known as "Shaggy." As Josip completes other tasks, Nate and I waited near the wolf while it is recuperating. We chat over a picnic of cheese, olives, cookies and coffee. He tells me how he went to college when he was younger, didn't like it but ended up starting at the U several years later at the age of 28. He loved it so much that he came back for a master’s degree at 32.

To me, Nate is a great example that it is never too late to invest in your education. It has clearly paid off for him; he is planning on publishing his work on bear rubbing tree behavior. We continue to chat while the wolf gets to his feet, eventually disappearing into the forest.

Another ghost.

The Dump Bears of Sarıkamiş

The bears in this photo are of various sizes. The dump and its food resources bring them all together. Credit: Nathan Murthy

At this point, the large carnivore project is essentially finished. We have no more wolf collars. But there is one last thing I want to see: the trash dump. Since Sarıkamış' forests are so small, the natural resources available for the bears are limited. Every single night, bears make their way to the trash dump where they feed on food scraps.

At 10 p.m. we pull up to the site and make our way into the dump. I put on a mask to alleviate the putrid smell of burning trash.. As we drive through plastic, food scraps and glass, many bears come into sight, revealing themselves from behind the smoke. Countless brown bears lay out on the trash, searching for food. Some of them are big, over 200 kg, and several are cubs. Numerous stray dogs join in on the feast too. They don't seem to mind each other's company due to the availability of food.

I feel conflicted. To me, brown bears are impressive animals to be respected, but here they behave like raccoons. We count 53 bears, each of them scurrying off as we pass by, almost like they are ashamed to be there, but they are doing what they can to feed themselves. Like all creatures, including humans.

Survival

During my time in Sarıkamış, I got to see some of the world's most notorious animals. And well  . . . they weren't what I expected them to be. They were scared; their only desire was to survive. And with human-wildlife conflict becoming ever more common, it's vital to continue this work.

We need carnivores to provide ecosystem services such as wild herbivore population control and the removal of carrion to keep our forests healthy. At the same time, I learned that reality is often different from perception. People, especially in the U.S., are afraid of large carnivores. But I think if we took a little bit more time to understand them, we'd realize that they exhibit fear. They are afraid.

And, as with us, the first order of the day for these animals, notorious or not, will always be to survive.

Nathan Murthy

 

by Nathan Murthy

Nathan is a senior in Earth & Environmental Science at the University of Utah and a Wilkes Scholar awarded by the U's Wilkes Center for Climate Science and Policy where he was on the winning team of the Climate Solutions Hackathon focused on water resources. He was also a Lighting Talk and Poster Contest winner at the Wilkes' Summit.

This is the second of two reports from his research in Turkey. You can read the first one here and watch the video of his experience here.

 

A molecule that enables microbes to eat methane

A molecule that enables microbes to eat methane


September 4, 2025
Above: A model of methylocystabactin (gray) binding an iron atom (orange). Credit: Andrew Roberts and Aaron Puri

U chemists discover critical step bacteria take to oxidize potent greenhouse gas and how they interact in larger microbial communities

Aaron Puri

Because of its potent greenhouse properties, methane gas is a significant contributor to climate change. It also feeds microbes known as methanotrophs that convert the gas into carbon dioxide and biomass, but scientists have been unsure how these microbes get all the nutrients they need to accomplish this task.

Now, a University of Utah chemistry lab has developed a novel technique for studying these microbial communities and has used it to discover a new molecule that enables methane-oxidizing bacteria to acquire iron from the environment, which is important for understanding how these organisms sequester methane, keeping it out of the atmosphere.

The findings, to be published Friday in PNAS, also provide information that could be useful for harnessing methanotrophs to convert methane into useful chemicals and liquid fuels, according to principal investigator Aaron Puri, an assistant professor of chemistry and member of the U’s Henry Eyring Center for Cell & Genome Science.

“Understanding these types of mechanisms that they use to interact with their environment is critical if we’re going to optimize using them for useful tasks,” Puri said. “We’ve also identified a key link between how iron exists on Earth and how gases are cycled in the atmosphere, which is through these methane-oxidizing bacteria, and more specifically through this new molecule that we’ve discovered.”

Methane, or CH4, the simplest hydrocarbon molecule, is the main ingredient of natural gas that fuels home appliances. This gas is also released from decomposing organic matter, commonly at landfills or swamps. It packs about 80 times more heat-trapping power in the short term than carbon dioxide, a longer-lived gas that is the main driver of anthropogenic climate change.

Microbes naturally break down CH4 through an oxidation process that yields carbon dioxide and organic compounds.

Puri’s study introduces a new tool called “inverse stable isotope probing–metabolomics,” or InverSIP, which links genes found in microbial DNA with the actual small molecules called metabolites those genes produce. Using this method, the Puri Lab discovered a previously unknown iron-grabbing molecule made by methane-eating bacteria. They dubbed the molecule methylocystabactin.

It functions like a claw that pulls iron from the environment and makes it available for enzymes that oxidize methane. But it gets even more interesting.

Read the full story by Brian Maffly in At the U

Oxygen came late to ocean depths during Paleozoic

Oxygen came late to ocean depths during Paleozoic


September 4, 2025

Thallium isotopes show O2 levels rose and fell at the ocean floor long after marine animals appeared and diversified half billion years ago, according to study of ancient marine sediments exposed by river cuts in Canada's Yukon

Chadlin Ostrander

The explosion of animal life in Earth’s oceans half a billion years ago during and after the Cambrian Period is commonly attributed to a substantial and sustained rise of free oxygen (O2) in seawater. Some researchers even argue for near-modern levels of ocean oxygenation at this time.

But O2 levels in Earth’s deepest marine environments fluctuated wildly long after the Cambrian, according to new research published by a University of Utah geologist with colleagues from other institutions.

Using stable isotope ratios of thallium (Tl) preserved in ancient marine mudrocks, the researchers reconstructed O2 levels between about 485 and 380 million years ago. This timeframe immediately follows the Cambrian rise of animals and even intersects the later rise of land plants. The findings, published this week in Science Advances, challenge some conventional views of ocean oxygenation, according to lead author Chadlin Ostrander, an assistant professor in Utah’s Department of Geology & Geophysics.

“It wasn’t like someone flipped a switch and the deep ocean became forever oxygenated,” Ostrander said. “Just a decade ago, it was thought that a deep ocean oxygenation switch was flipped around 540 million years ago. Our new dataset pushes that forward in time by at least ~160 million years.”

To reach these findings, Ostrander and his collaborators analyzed the stable isotopes of thallium—a heavy metallic element that occurs in trace amounts in Earth’s crust—contained in ancient marine sediments they recovered from Yukon, Canada. Very few processes can strongly fractionate Tl isotopes, that is, partition them in ways that result in different ratios.

The strongest fractionations today occur in deep marine ferromanganese deposits. O2 must accumulate in deep marine waters to stabilize these deposits, according to Ostrander. Thallium isotope ratios in the new study were rarely strongly fractionated, meaning these O2-dependent deepwater deposits were also rare.

“We do find some evidence of O2 building up in the deep ocean, but only for very brief periods of time,” Ostrander said. “Even at the youngest end of our dataset, the ocean seems to plunge back into an episode of widespread anoxia.”

 

Read the full story by Brian Maffly in @ The U

On the same team

On The Same Team


September 3, 2025

Safety regulations are often treated with an air of annoyance by those required to follow them. A roadblock to hurdle, yet another extra step that must be taken to get where they want to be.

Brandon Newell

But the truth is that every one of those regulations exists due to a tragedy that occurred without it. Brandon Newell cannot stress this importance enough: that safety rules are in place to protect workers, like guardrails. Those who enforce those rules are defenders, part of the team working towards the same goal of getting everyone home safe at the end of the day.

Newell got his start in safety working at Hill Air Force Base where he would take on the role of inspecting any explosives the base would be working with. He was simultaneously using his GI bill to finance his education at Weber State University in Ogden, the combination paving a natural road that led him to the Environmental Health & Safety (EHS) Office here at the U. Since then, he has worn many hats at the EHS, from lab inspector to occupational safety specialist to his current position managing the occupational safety team. 

The rigorous work this team does may come as a surprise, as the U rarely makes the news in terms of these sorts of accidents. This is the greatest irony of work within safety. The more efficiently it is carried out, the less important it seems as nothing is going wrong. 

But such prevention is constantly carried out. As one of many examples of something they’ve caught, Newell describes that “there are many peroxide forming chemicals that can crystallize and explode upon contact when they get old. Doing that on a recurring basis over the last five to seven -years. . . lab personnel have that hazard at the forefront of their minds.” 

It may not lead to the most exciting story headlines, but it’s far more preferable than an injured student, faculty or staff member.

Silent stories like those peroxides happen across campus, from engineering workshops to research labs, to simply walking around campus. To pursue further prevention, the EHS organizes a “Walk After Dark” event every year, bringing all students who wish to participate to jaunt around campus and identify any areas of issue. If there are lights out, damaged railings or lighting needed around potential tripping hazards, EHS wants to know about it. The annual event  symbolizes the EHS’s goals and values: to work together with students to create a safe campus environment.

Brandon Newell closes by stating that “we’re on the same team. We don’t enjoy having to be the people that are forcing compliance, forcing regulations. These are your rights, and we’re here to help make sure that your rights are not violated.”

by Michael Jacobsen

This is the third in a series of periodic spotlights on staff who work in the Department of Environmental Health and Safety at the University of Utah. You can read more about safety and wellness, under the direction of David Thomas in the College of Science here. Read the first story in the series about Christin Torres here, and the second story about Emily O’Hagan here