September 2026 - Our Amazing Grasslands - Prairie Grasses Root System

Duration: 5:15 891 transcript words EN summary

Video summary

In a prairie ecosystem, the most fascinating aspect is the existence of symbiotic relationships where plants do not compete but instead work in concert with one another. Unlike monoculture crop fields where root systems are often viewed as being in conflict over resources, prairie plants and microbes communicate and share nutrients through a complex underground network. This collaboration allows certain plants to absorb water or minerals from deep within the soil and transfer them via root exudates to neighboring species, effectively pumping life-sustaining resources like nitrogen and carbon throughout the community with the help of mycorrhizal fungi. The value of a prairie extends far beyond the grasses that are directly consumed by grazing animals or used for hay production; it relies on the entire plant community functioning as an interconnected system. For instance, broadleaf plants like goldenrod may have little direct grazing value, yet they play a critical role by mining deep minerals and nutrients from the soil and making them available to surrounding grasses. This interdependence is comparable to a city where various departments such as electricity and sewage work together underground to support the whole infrastructure, meaning that removing "weeds" or non-grass species based on modern management misconceptions actually undermines the health of the entire ecosystem. Preserving these diverse root systems is essential because native rangeland ecosystems provide the benchmark for understanding soil health, which includes keeping living roots in the ground as a fundamental tenet. Aldo Leopold's wisdom that intelligent tinkering requires saving all parts of an ecosystem highlights why maintaining prairie diversity is crucial; without it, we lose the standard against which to measure successful land management and our ability to mimic nature when raising food. Although prairies are disappearing at an alarming rate, understanding these underground connections reveals that even efforts to increase diversity with non-native plants can guide us toward the right path, allowing nature to answer its own questions and restore balance if given the chance.

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In a prairie ecosystem, [music] one of the most interesting things is what we call symbiotic relationships. And that means that the plants aren't in combat or conflict with each other. They're actually in concert with each other is probably [music] the best word. And the best way for everyone to understand this is to think about a crop field. A crop field is usually one or at the most [music] two plants, maybe maybe more, but often times we're focused only on that plant, and everything else that's in there, a weed or even a another old plant from last [music] year, is competitive. And the root systems in the plants are are in [music] contrast with each other or combat. And that's not true in a prairie. In a prairie, >> [music] >> it's symbiotic where the plants, the microbes, they talk to each other. They share with each other. One plant [music] may pull in nutrients such as water or minerals and feed [music] nitrogen or carbon or other things through what we call root exudates to the other [music] plants. They'll actually serve at a microscopic level. They pump and feed each other. It's [music] a fascinating thing that we only have recently learned to to see uh with modern technology being able to focus in at [music] a microscopic level and how they just pulse at these nutrients out to each other in [music] exchange with fungi and we call mycorrhizal fungi and these things just the stuff of life in a prairie is so interconnected. And so then we [music] bring it up to the plant level itself and we think of well, what's the value of a prairie? And it's easy to see the value of grasses cuz we can consume them. We can make hay. Animals, grazing animals [music] eat them. And people often don't think that grazing animals will eat the broadleaf plants and so therefore kind of modern [music] management says well those plants are of no value maybe we'll get rid of them to have more grass and that's just [music] a very backwards way of thinking that that community needs each other it's not unlike a town or a city that needs >> [music] >> the electrical department the sewer department the infrastructure the DOT whatever [music] that is all of that is happening underground so a grass plant might in fact [music] really need its neighbors to be able to mine the [music] nutrients from the soil that it can't mine itself and so I use >> [music] >> something very easy like a goldenrod plant that has really no grazing value whatsoever but we know [music] that those goldenrod plants mine from the deep the very deep minerals [music] and nutrients and water and they suck it up into the top and they slough it off and the plants [music] around them benefit from that and so that's at a level of the plant and then when we talk about the level of the community and why [music] the prairie is so important it's because of this interaction and the stuff of life [music] that it brings forth that if we don't preserve that we don't really have what we call a benchmark in fact we talked about the tenets [music] of soil health which is keeping a living root in the soil as one of those five or six tenets [music] of soil health and we need to think [music] about the entirety of the tenets of soil health where did those come from or how did we learn what healthy soil [music] is and they come from native rangeland ecosystems that give us the benchmarks that we compare everything against and so those root systems are the foundational premise of [music] all of it and if we can keep at the prairies it keeps us in the know you [music] might say and I just love this quote from Aldo Leopold you know that the key to intelligent tinkering is saving all the parts and if we don't save [music] all the parts of the prairie, we don't have the benchmark things to compare [music] to to tell us how we're doing on the rest of our land management, right? How do we raise food and [music] mimic what we learn from native ecosystems? And we actually can have [music] both. Although we're still losing prairies much too quickly, it's really exciting [music] what we what we think we understand about prairies. If you're just doing [music] the next right thing for the soil that adds diversity even if [music] it's not 100% native plants, you got to ask yourself, [music] am I still going the right direction? And what is the first best step? Diversity. [music] Diversity will beget diversity. It will lead us right down the right path to what eventually wants to and needs to grow there if we allow it to happen. Nature answers [music] its own questions if we give it a chance. Um and that that diversity in [music] roots, it starts underground and it it it goes up from there. And um man, when you see it explode, [music] when everything starts to click, you don't have to be a scientist to to see what's [music] obvious. So.