Nesting wood turtle, in-situ
The following three factors have had a profoundly adverse affect on my herpetologically-themed activities: my wife's purely work from home schedule, the cancellation of my daughter's daycare, and my newfound unconventional work schedule. Not to mention, general social distancing policies limiting what we can do and where we can go. I cancelled a herping road trip to the northeast, the International Herpetological Symposium in Atlanta was cancelled, and in general I haven't had as much time to get out in the field.
So when Ryne Rutherford reached out and offered to take me into the field to find and collect data on wood turtles (Glyptemys insculpta), I gladly accepted and eagerly anticipated the unique experience.
Nesting wood turtle, in-situ
Ryne and his wife Jen run a small biological consulting firm in the Upper Peninsula (UP) of Michigan. Both of them are naturalists in the classical sense; Ryne is an expert in local amphibians, reptiles, birds, mammals, plants, lichens, and more, and Jen is equally as dexterous. They live in a beautiful home steps away from Lake Superior - a home they rent to visitors during the heavier travel seasons. Located at the foot of the Porcupine Mountains Wilderness, it's about as secluded as you can be in the lower 48.
The drive to the property, formally dubbed "Gitchee Gumee", took about seven hours. Once there, I was given a tour of their beach. An absolutely breathtaking sunset was beginning to take shape as we began to talk herps and the following day's activities. Later, Jen made some chaga tea from locally sourced fungus and graciously offered me some. I didn't know what to expect since I generally turn my nose at mushrooms, but the tea was rich, clean, and comfortably earthy. We stayed up late on the back deck attracting moths with a bright light and a white sheet, and engaging in discussion over our philosophies regarding nature. We also talked about and became giddy over the moths.
The next morning, Ryne and I departed Gitchee Gumee and headed toward the first spot on the agenda. It was still early and a bit cool so he focused on finding and showing me some interesting north woods wildflowers. I was blown away at the diversity and abundance of the wildflowers as well as Ryne's knowledge of them. It was a lot of tough, steep uphill climbing and bushwhacking - the activity reminded me of how important it is to be in shape in order to do these kinds of things (I'm not as much as I used to be pre-fatherhood, while Ryne is a strapping lad).
Pink lady slipper orchid
Starflower
Fringed polygala
At our second site, we hiked down to a winding river and walked the gravelly and sandy beaches looking for nesting wood turtles. I excitedly scanned the beach, making sure to also look for turtle tracks in the sand. After maybe 15 minutes of searching an area of beach covered in herbaceous vegetation, Ryne paused and looked at me. I stopped and wondered why. A couple seconds later, without taking his eyes off of me, he smiled and said, "I'll wait for you to see it." Then as if by magic, it appeared right in front of me. An adult female wood turtle, officially my first ever, motionless among some grasses and sedges. I was overcome with glee in a way I've felt before with certain other species, but I think being surrounded by tremendous scenery and being in such good company made this all so much more special. I picked the turtle up and inspected it as Ryne began unpacking his mobile lab.
Ryne inspecting a female wood turtle
The wood turtle is an unusual North American testudine in that it is semiaquatic but feeds both in the water and on land. My understanding of most of our semiaquatic turtles (other exceptions include Emydoidea and Glyptemys) is that they feed in the water; if they happen to catch something on land, they will not consume it until they've crawled back to the water. Wood turtles actually forage on land and spend a great deal of time there; Ryne has observed these turtles munching away at mushrooms. But back in the water, they will feed on both plant and animal matter. Appearance-wise, these turtles are large and have a rough, textured carapace not unlike that of some tortoises. In fact, the wood turtle reminds me of what you might get if you could somehow successfully cross a Blanding's turtle with a pancake tortoise.
Wood turtles are a northern species that are long-lived and experience a fairly short active season. In order to survive to adulthood, they must evade predators from a tender young age, find food and refugia, and survive bitter cold winters. Predation of eggs and young turtles is very high, and sexual maturity isn't reached until the age of 15-20 years or more, so every adult wood turtle is precious. Wood turtles are protected in every state they are found in, and though they aren't federally protected, they are categorized as endangered by IUCN and their numbers are overall decreasing. Studying these turtles long-term will help Ryne, Jen, and other biologists further their understanding of the species and provide clues as to how to better conserve them and their habitat.
After not finding any other wood turtles at that second site, we trudged our way back to the truck and toward our final site - a river further inland in what I'd consider a true wilderness area. When Ryne parked the truck, he took a few extra minutes to prepare for the outing. I could tell that this was not going to be a walk in the park. Well, not any ordinary park. It was going to be the kind of experience that can make or break a prospective field biologist.
Lichens in a tall tree
In the Chicago area, it's highly unusual to visit a natural area and not be guided by some sort of path, whether it's a wide paved path or a busy deer path. It's also highly unusual - impossible, actually - to avoid any sign of human impact. You cannot and will not escape roads, power line cuts, overhead airplane noise, distant traffic, litter, channelized streams, degraded old fields, widespread invasive species, etc. Basically, if you're a nature lover but have never explored beyond the scope of the Chicago Metro area (or any metropolitan area), you haven't experienced wilderness.
We left the truck at the end of a seldom-used dirt road and began hiking into the woods. Ryne had been here many times before - he was quite familiar with the lay of the land. He confidently pushed through, occasionally stopping to point out a new interesting plant. We soon reached a bluff overlooking the river; it was stunning. But we needed to get down to that river. The easiest way was by carefully sliding sideways down a steep sandy embankment. When we reached the bottom, we began our trek toward the first of several sandy turtle beaches.
Busy beach - wood turtle tracks all over
It occurred to me almost immediately that the bug shirt I brought with me (which was in Ryne's backpack) was going to be a requirement. Somehow Ryne wasn't being eaten alive - that, or he's just tough. I had to have looked silly waving the mosquitoes away from my face, neck, and arms. Each time we stopped for even a brief moment, I was dancing. I really tried to be cool but I gave in and put the damn thing on. Ahhh, relief. Funny, but when I brought my bug shirt with me, I thought it'd make me look legit. Instead, I think it made me look even more urban.
Me with one of the wood turtles
We finally reached the first of the several beaches at our third and final site. After scoping the beach and finding wood turtle tracks, Ryne spotted the first turtle of the site. Another female looking to nest, she was cloaked in a swarm of blood-sucking gnats. I picked her up to palpate for eggs when I noticed the tiny flecks of blood on her skin drawn by the gnats. I kind of felt privileged to be wearing my bug shirt and also kind of felt like a jerk for filming this poor turtle being eaten alive. This particular animal was entirely new to the study, so Ryne marked her shell with a unique series of identifying notches so that if captured again, data taken can be compared to earlier data.
A wood turtle bombarded by blood-sucking gnats
Over the next several hours and two beaches, we'd find two more nesting female wood turtles for a total of four turtles. Each turtle was identified and measured, and other meristic data was compiled from each animal. Ryne has been out to these sites throughout the Upper Peninsula for well over a decade and has a lot of data he and Jen have collected. This data has functioned and will continue to function as guidelines for habitat restoration/improvement, land use recommendations/restrictions, and other areas. For example, several of the sandy beaches frequently used by wood turtles for nesting are easy targets for reed canary grass, an invasive species that can completely redefine habitat. Reed canary grass is tall and dense and presents a challenge to wood turtles who have been using those sandy beaches to lay their eggs for many generations. It may also prevent the sandy substrate from achieving temperatures sufficient for proper incubation. Ryne has seen the grass proliferate, and because of his observations and reporting, the beaches had been treated with herbicide and all of the reed canary grass on most of the beaches had been eradicated. Now, the beaches were mostly clear again, providing ample opportunities for egg deposition.
Morels thriving among the dead reed canary grass
We eventually made our way back to the truck and back to Gitchee Gumee, but not before stopping to see a stunning waterfall not far from the ecolodge. It was the perfect ending to a memorable and remarkable day. I learned a whole lot about wood turtles and I experienced a day in the life of a north woods field biologist. I'll tell you, as someone who has only volunteered and tagged along as an "avocational herpetologist", working in giant areas of wilderness without roads or paths and contending with the numerous ticks, mosquitoes, and flies is harder than surveying for herps in smaller, easily accessible areas with good cell reception. So I also developed a greater respect for Ryne, Jen, and those that work in the kinds of areas like the northern UP.
That night's shower felt really good. And watching the gorgeous sunset from the shores of Lake Superior at nearly 11:00 PM nearly made me melt. I have unfinished business in the UP. I'll be back.
A stunning view from Gitchee Gumee
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