Photos of the Week – December 13, 2019

Recent temperature swings, including many freezes and thaws, have created some interesting patterns on the frozen surfaces of wetlands and ponds. Early this week, I took advantage of the latest cold temperatures to wander out on the pond/wetland at our family prairie. There was only minor cracking beneath my feet as I carefully stepped and slid across the (mostly) frozen surface. I stayed near the edges where I knew the water below me was only a foot or so deep and tried to distribute my weight as evenly as I could. That’s all completely normal behavior, right?

As a call-back to my previous post about ‘shooting into the sun’… You can see the kind of interesting patterns that lured me out onto the ice.
There was a thin film of dust across much of the ice, probably blown in by 40-50 mph winds last week.
A helpful Instagram follower alerted me that this is called ‘pancake ice’. These dinner-plate-sized formations were aligned along a line of transition between deeper and shallower water. I assume they were formed by wind pushing slush around along the boundary between the deeper open water (at the time) and shallower frozen portion of the wetland.

I spent about an hour on that ice, much of it waiting for the brief periods when the sun popped out from behind the thin clouds moving across the southern sky. I only stepped through the ice once, and that was when I decided to confirm my suspicion that the ice along the northern shore was probably thinner because of its increased exposure to the sun. Hooray for science… My waterproof boots were more than sufficient to keep me dry.

Below are some more photos from my morning jaunt.

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About Chris Helzer

Chris Helzer is Director of Science and Stewardship for The Nature Conservancy in Nebraska, where he conducts research and supervises the Conservancy’s preserve stewardship program. He also helps develop, test, and share prairie management and restoration strategies. Chris is also dedicated to raising awareness about the value of prairies through his photography, writing and presentations. He is the author of The Prairie Ecologist blog, and two books: The Ecology and Management of Prairies and Hidden Prairie: Photographing Life in One Square Meter. He is also a frequent contributor to NEBRASKAland magazine and other publications. Chris and his family live in Aurora, Nebraska.

8 thoughts on “Photos of the Week – December 13, 2019

  1. I especially like the photos showing stubble poking through the ice (the one with the ice ‘cap’ is my favorite), but I’m struck by how much the pancake ice shapes resemble certain fruiting lichens.

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