Our family prairie has been a place of tremendous refuge for me lately. The world seems to be going crazy and taking many of my friends and neighbors with it. I can’t even express the gratitude I have toward my extended family for the opportunity to own and manage the quarter section of land (including 100 acres of prairie) only 15 minutes from our house. The simple act of walking through our prairie fills me with a complicated mixture of emotions, including both peace and pride.
False sunflower (Heliopsis helianthoides) in foreground, and ironweed (Vernonia sp) and other wildflowers in the background. Nikon 10.5mm fish eye lens. IS.O 500, 1/320 sec, f/20
The peace comes from being able to quietly observe life and interactions that have nothing to do with swirling vortex of hate, argument and anxiety that otherwise pounds at my consciousness. I can sit still and lose myself in the earnest and vigorous foraging of a bee on a flower or reflect upon how much the plant community has changed in the days since my last visit. By the time I leave to return to my other sanctuary – my family – I’m much better suited to deflect and/or process the current unpleasantness in the human world.
Painted lady butterfly (Vanessa cardui) on Flodman’s thistle (Cirsium flodmanii). Nikon 105mm macro lens. ISO 500, 1/500 sec, f/13.
The pride comes from watching the prairie continue to thrive and increase in beauty and complexity as our restoration and management work bear fruit. A visiting botanist might scoff at the rarity of ‘conservative’ plants – species found primarily in unbroken and ‘pristine’ prairies. In response, I could walk them to many populations of plants in that category and describe how the populations of each has spread over the years I’ve been familiar with the site. I could then point out the diversity of pollinators and other insects (including some at-risk species) thriving in the ever-increasing plant diversity and the number of grassland bird species responding to the shifting mosaic of habitat structure we provide annually. And I’d try to describe the immense sense of accomplishment and pleasure I get from every sighting of a cicada, badger, tree frog, or any other animal that calls our prairie home.
False sunflowers, ironweed, and other wildflowers decorate the bottom of a shallow draw. Tokina 12-28mm lens @12mm. ISO 500, 1/250 sec, f/18.
When I was a full-time land steward for The Nature Conservancy, early in my career, any sense of accomplishment was always tinged with anxiety related to invasive species threats or other challenges looming in front of me. For some reason, I’ve never felt that stress at our family prairie, despite a consistent and long list of tasks still to accomplish. Instead, I chip happily away at encroaching trees, harvest and broadcast seeds to boost plant diversity, and spray patches of reed canarygrass around the wetland – all blissfully free of worry. It’s as if the prairie and I have reached an understanding. We’re in this together. What comes will come and we’ll deal with it as we need to. In the meantime, look at all those butterflies!
This long-horned bee (Melissodes sp) was feeding on rosinweed (Silphium integrifolium) and paused to wipe pollen off its face and tongue, allowing me to capture a couple portraits of it. Nikon 105mm macro lens. ISO 500, 1/800 sec, f/13.Same bee as above, showing its tongue. Camera details are the same as the first photo.This Woodhouse’s toad would rather I’d just left it alone but I pestered it for a few photos before letting it hop back off into the prairie. Nikon 105mm macro lens. ISO 500, 1/160 sec, f/14.Same toad as above. Same lens too, but 1/400 sec and f/11.Big bluestem in silhouette as the sun emerges from behind morning clouds. Nikon 18-300mm lens @300mm. ISO 500, 1/5000 sec, f/22.Prairie cicada (Megatibicen dorsatus). Nikon 105mm macro lens. ISO 500, 1/250 sec, f/18.A patch of rosinweed (Silphium integrifolium) at sunrise last weekend. Rosinweed is one of many plant species that was absent from our prairie before we started broadcasting locally-harvested seed in recently grazed locations. Tokina 12-28mm lens @22mm. ISO 500, 1/125 sec, f/22.
I’ve said many times, here and elsewhere, that I acknowledge the enormous privilege associated with land ownership, especially when it’s accompanied by the kind of gratification and serenity I find in our prairie. Through this blog and other means, I try to share fruits of that privilege with others, spreading as much of the peace and pleasure as I can. More importantly, I hope anyone reading this can find access to a prairie or other natural area – large or small – that provides similar refuge. Goodness knows we can all use a little refuge right now.
The problem with soil is that most of it is underground. How are we supposed to learn about it or see how it’s doing? Last year, I polled a group of soil experts and wrote a post on what we actually know about how various prairie management techniques affect soil carbon. It ended up just being a list of all the things we don’t understand yet. It was disappointing, but not really surprising. Soils keep their secrets buried.
When I was growing up, my dad worked as a soil scientist. For many years, his primary job was to create soil maps – in part to help farmers, ranchers developers, and others understand what they could expect from or do with any particular piece of land. As I understand it, Dad and others used aerial photos and other clues to find where breaks in soil patterns might occur and then went out and poked a bunch of holes in the ground. They’d pull up a skinny sample of the soil, look at the color, texture, and other features, note the location, and then repeat that process many thousands of times. That’s a really difficult way to make a map.
This badger helpfully brought some soil to the surface so we can examine it. Normally, all the soil stays inconveniently beneath the surface of the ground.
I did learn one interesting thing from my father the soil scientist though, and it has stuck with me to this day. Maybe it’ll be helpful to you too. You’ve probably wondered about the difference between ‘soil’ and ‘dirt’. Well, the mantra I was taught is this: “Dirt is in your fingernails. Soil is in the ground”. There, doesn’t that make you feel smart?
This doesn’t necessarily count as an interesting thing, but I also know that the state soil of Nebraska is Holdrege Silt Loam. You’re probably thinking, “Wow, how does he know the state soil off the top of his head??” If you’d grown up in our family, you’d remember it too because Dad asked that question to nearly every person he struck up a conversation with – wait staff at restaurants, people sitting next to him at social gatherings, and anyone else within earshot. It wasn’t embarrassing at all.
Regardless of my soil-related childhood trauma, the more I learn about prairies, the more I appreciate how important enthralling and soil really is. Microbial communities in soil, for example, play immensely important roles in prairie ecosystems. At least, that’s what I’m told by people trying to study them. Imagine having that job, by the way! “Here, figure out what these millions of different microscopic creatures are and what they do. Oh, did I mention they all live underground? Ok, bye!” Studying zooplankton in the ocean is probably really challenging too, but at least you can swim down into the water and look for them.
I’ve tried to understand the relationship between soil and plant roots, which has been really fascinating, if confusing. Prairie plants are well known for their deep roots, though as I wrote about in another post last year, they don’t seem to use them they we assumed they did. Regardless, plants extract nutrients and water from soils – with a lot of help from microbes. They also need soil as a place for seed germination, a medium in which to anchor themselves, a place to hide their nutritious tubers and other carbohydrate stores from hungry aboveground creatures, and much more.
Most of you know that I spend a lot of time trying to learn about insects and other invertebrates, especially by finding and photographing species I don’t recognize and then trying to identify them later. I recognize I’ll never come close to photographing the incredible diversity of prairie insects, and that’s just counting the ones living aboveground. The biomass of invertebrates is 10 times higher underground! That’s intriguing and impressive, but also kind of depressing. How am I supposed to photograph insects down there?? First of all, it’s dark. Second of all… I mean… there are so many second-of-all obstacles, I don’t even know where to start.
Despite all the challenges of understanding soils, I do know a little about them, especially when I can watch the impact of soil qualities on aboveground vegetation. Our Platte River Prairies, for example, grow mostly in alluvial (water-formed) soils. At one point or another, river channels flowed through the current location of today’s prairies, depositing sand, silt, and other dirt-related particles (sorry for the jargon) in meandering stripes across the landscape. From the air, you can clearly see the layout of those soil lenses, even in tilled land. The patterns become much more pronounced during spells of dry weather because plants growing in lenses of soil with less organic matter wilt and turn brown much faster than those with more organic matter.
I took this aerial photo with a drone last week. It shows restored prairie at our Platte River Prairies. The brown area is within a former crop field restored to prairie back in 1995 and the green strips within it denote where former river channel scars filled when that field was first leveled for irrigation. A recent dry spell and some intensive grazing have accentuated the way vegetation reflects the underlying soil patterns.
Even during periods of abundant rainfall, a discerning naturalist can identify where drought-tolerant and drought-intolerant plants are growing and make deductions about relative soil organic matter quantities accordingly. It’s fascinating to watch new plant communities establish when we restore crop fields back to prairie vegetation. We spread seeds of 150-200 plant species across those fields and then wait to see what species will grow where. With good and timely rains, just about any seed can germinate and start to grow anywhere in that field. But once we hit the first drought period, local neighborhoods start to form based on whether they are well adapted to the soil characteristics below them. I always figure a new restored prairie isn’t a mature plant community until it’s been through a couple extended drought periods because that’s when the sorting happens.
During the 2012 drought, underlying soil patterns became very apparent as vegetation quickly browned up where organic matter levels were low.
I can also see the effects of soil characteristics at our family prairie, as well as at the Platte River Prairies, when I look at differences between plowed and restored prairie and unplowed remnant prairie. Again, in years with consistent rainfall, the productivity can be similar, but any short spell without precipitation produces sharp contrasts. On any site with a history of cultivation, the grasses are less dense, shorter in stature, and quick to turn brown in the absence of consistent rainfall.
Sometimes, you can even see distinctions between formerly plowed and unplowed prairies within the same day. On a hot dry day, even if we’ve had recent rains, the baking heat of the afternoon sun can start to wilt plants, and that wilting tends to be much more pronounced in soils that have been farmed. That’s true even at our family prairie, where former farmland was put to grass way back in 1962. Those soils are still far from regaining their former productivity.
Unless someone invents snorkeling gear for soil exploration (imagine the marketing campaign!), I’ll probably always have a fairly surface-level understanding (so to speak) of prairie soils. I try to stay abreast of what experts are learning, but I frankly have a hard enough time keeping up with what’s happening aboveground without also trying to pay attention to subterranean goings on. I’m hoping my friends who do the hard work of studying soils will just tell me when there’s something I really need to know. In the meantime, I can always fall back on the knowledge I gained when I was a kid:
“Dirt is in your fingernails. Soil is in the ground.”