Perspectives of the Prairie: Neil Dankert

Hi everyone.  The following blog post is written by 2024 Hubbard Fellow Claire Morrical.  Claire put together a fantastic series of interviews with people working in conservation here in Nebraska and we thought you’d enjoy reading and listening to their stories. 

This post also contains audio clips. You can find the text from this blog post with audio transcripts HERE. If you’re reading this post in your email and the audio clips don’t work, click on the title of the post to open it online.


Every year, Hubbard Fellows are tasked with completing a project to advance TNC’s mission and conservation in Nebraska. That’s it. That’s the rubric. This is a rare opportunity to explore whatever method, medium, or idea you want. Past projects included research projects, plans for a trail kiosk, and even a comic book about the Platte River.

My project originated with a lifelong friend, an oral historian who interviews people to preserve their experiences and perspectives of the histories they’ve lived through. Hearing how valuable those stories were to understanding the past made me want to create my own collection of interviews. I originally planned to follow more traditional oral history practices, creating an archive of two-hour unedited interviews intended to capture 30 years of experience of people I’d never met. When I presented this approach to Chris, he asked me, “Who’s your audience?” Which was a very kind way of saying, “Who the heck is going to listen to that?” – I had some refining to do.

The great thing about working on one project for a full year is that it gets to develop organically. As I molded the project to fit a public audience, I eventually created “Perspectives of the Prairie” – interviews with people of different ages and experiences, enriched with photos and maps to ground the stories in place.

Spending the year with this project was such a joy. I enjoyed experimenting with ways to deliver context and information. Most of all, I loved talking to people, getting to know them better, and trying to see the landscape through their eyes. The more people I met, the more I thought, “Man! I really want to interview them!” It was so fun to chat with so many people, and I hope you’ll enjoy chatting with them too!

You can explore the full Story Map through this LINK.

On top of that, each interview will be published on The Prairie Ecologist as its own blog post (Psst, the first one is just below)!


Neil Dankert has been surveying butterflies since 1984, just 4 years after TNC bought Niobrara Valley Preserve. Neil and I spoke during the 2024 butterfly survey about how much can be missed by timing and chance, Neil’s reflections on the 2012 wildfire at the preserve, and the importance of sharing knowledge to Neil’s journey.

Interview: July 2nd, 2024

Neil Dankert (left) identifies a butterfly in a plastic bag.

Part 1: Meet Neil

Location: Middle Creek at Niobrara Valley Preserve

Butterflies mentioned: Two-spotted Skipper (Euphyes bimacula), Dion skipper (Euphyes vestris)

These are soundbites from the annual butterfly surveys at Niobrara Valley Preserve. Every year, Lepidopterist Neil Dankert is joined by his partner, Jen, and assisted by Johnathon Nikkila and his son in his search for butterflies and moths that fill the records of the Lepidopterists Society and Niobrara Valley Preserve.

Lepidoptera: a group of insects that includes butterflies and moths

Butterflies mentioned: Silvery Checkerspot (Chlosyne nycteis), Gorgone Checkerspot (Chlosyne gorgone)

Those of us who hadn’t participated in surveys in the past first met Neil the night before. It was an informal gathering around a mercury vapor light, set up against a sheet to attract moths. We were pointing out moths and insects as they swarmed the sheet (and our faces) when Neil joined us, answering questions and identifying moths. The target of the night was the abbreviated underwing (Catocala abbreviatella), a species identifiable by the showy orange on its bottom two wings. It was a sight to behold; hundreds of moths and flies and insects that flit through the night.

Hubbard Fellows, and Neil Dankert (red shirt) looking at insects at a bug light (photo: Chris Helzer)

The next morning, we passed around some of Neil’s finds, temporarily housed in orange pill jars, until Neil interjected to set the day’s course, leading with the announcement that this would be his 40 th  year of surveying butterflies at Niobrara Valley Preserve.

We first hiked through woodlands swatting at more mosquitos than butterflies. But we caught sight of the occasional Wood Satyr (Megisto cymela) and Wood Nymph (Cercyonis pegala). Our second site was at a prairie on rolling hills where we chased our main targets for the day: skippers. Skippers are small brown butterflies that Neil’s partner, Jen, describes as looking like paper airplanes. To an untrained eye, skippers often look nondescript and indistinguishable from each other. So, we brought them to Neil, like offerings in Ziploc bags, and waited patiently for him to confirm or deny our guesses and acknowledge that this was an exciting find, or just another name and tally for the list.

Butterflies mentioned: Least skipper (Ancyloxypha numitor)

Two-spotted Skipper (Euphyes bimacula) (photo: Chris Helzer)

Our third site was Middle Creek, which runs to the Niobrara River from the north. Here, Neil and I let the others do the hard work of chasing butterflies, while Neil invited me to “pull up a tailgate” as we discussed his 40 years surveying butterflies and moths at Niobrara Valley Preserve. Neil needed no prompting to launch into his story while I scurried to record –

Notes For Context:

  • Dr. Hal Nagel: A biologist at University of Nebraska Kearney
  • Dr. Paul Opler: studied Lepidoptera for over 50 years. He wrote a number of field guides including the Peterson Field Guides to Butterflies of Eastern and Western North America
  • The Lepidoptera Society: A collective of Lepidoptera lovers, scientist and non-scientist, dedicated to the study, recordkeeping, and preservation of butterflies and moths
  • County Record: the first time a species is recorded in a particular county

You can find a link to the 1988 butterfly survey HERE. The survey covered seven sites across Niobrara Valley Preserve. It recorded 24 Brown County records and 42 Keya Paha County records, as well as 16 species at the edge of their geographic range.


Part 2: What Neil Doesn’t See

Location: One of the sites where Weidermeyer butterflies were recorded at Niobrara Valley Preserve

Neil’s interview was peppered with visits by surveyors, consulting Neil and sharing what they’d found with others

Butterflies mentioned: Little Glassy Wing (Vernia verna), Northern Broken Dash (Polites egeremet), Silvery Checkerspot (Chlosyne nycteis)

Here’s one of the surveyors –

Butterflies mentioned: Orange Sulphur (Colias eurytheme)

Sulphur butterfly on curly cup gumweed (Grindelia squarrosa) (photo: Chris Helzer)

Back on topic now.

Neil’s career began with Niobrara Valley. And with guidance from other scientists and lepidopterists that shepherded Neil into the field, Neil holds a special perspective of the Niobrara Valley that spans decades. He’s watched species come and go. Some he relies on seeing every visit, others surprise him with their presence or their absence. He’s wondered at what he’s missed in the decades before his arrival that make his 40 years seem like a blink of an eye.

Notes for Context:

Read Neil’s blog post about these hybrids HERE.

Coral hairstreak (Satyrium titus) (photo: Chris Helzer)

Neil’s comment raises a question. What species do we miss when we choose only one day out of the year to survey and how do we account for them?

Maybe this presents an opportunity for deeper research. But in the meantime, the data that we do collect is no less meaningful.

Neil reflects on how his experience and the preserve has changed in the years since he began.

40 years of data can tell a long story. Neil watches changes on the landscape and how it impacts his butterflies. He mentions seeing the habitat change as the number of shrubs on prairies increases, an issue that concerns many grassland conservationists. Annual surveys can help us to understand how this impacts butterflies, by impacting things like access to host plants. But NVP is 56,000 acres with butterflies active for a third of the year. And speaking with Neil makes me so curious to know how much information exists beyond our 1-day survey. Who was flying in the far west corner of the preserve 2 weeks before we arrived?


Part 3: Fire on the Ridgetop

Location: The northern ridgetop, where ponderosa pines and eastern redcedars burned in the 2012 wildfire

Our closing ceremony of the survey is a count of all of the species we’ve seen, listed off in pieces scattered between surveyors and sites, and dutifully recorded by Neil. We’ve made our contribution to the list of 2000+ individual lepidopterans recorded in Nebraska.

Later, Neil and I continue our discussion.

Butterflies Mentioned: Two-tailed swallowtail (Pterourus multicaudata), Dusky wing (Erynnis sp.), Yucca Giant-Skipper (Megathymus yuccae)

The Nature Conservancy’s Niobrara Valley Preserve after the July 2012 wildfire (photo: Chris Helzer)

2012 was a drought year in Nebraska, resulting in several significant wildfires across the state. In July 2012, a lightning storm set off one such wildfire in Niobrara Valley Preserve. The fire burned 74,000 acres, including 30,000 acres of the Preserve. There were painful losses in the way of homes and facilities, but there’s an argument to be made for positive ecological impacts that the fire had on the preserve. For example, the fire burned through many eastern red cedars crowding out grasses and wildflowers on the northern ridge-side. That doesn’t mean there weren’t worries after the fire.

Hear Amanda Hefner talk about the fire in “Amanda Hefner 2: In the aftermath of the wildfires“.           

Neil shares the story from his perspective.


Part 4: A Butterfly Network

Location: Another site from the original survey at Niobrara Valley Preserve

Neil highlights it here, but throughout our discussion, his mention of names, advisors, and mentors shines a light on something I have loved experiencing in conservation: the interconnectivity of conservation and the importance of shared knowledge. It’s not so important to remember the names here as it is to understand how many people relied on and learned from to be where he is today. 

Butterflies mentioned: Great Spangled Fritillary (Argynnis cybele), Monarch (Danaus plexippus), Yucca Giant-Skipper (Megathymus yuccae), Silvery Checkerspot (Chlosyne nycteis)

This sense of community extends to Neil’s experience at Niobrara Valley Preserve.

Chris Helzer (center) shows a butterfly to Neil and the rest of the surveyors

Neil was joined by his wife Jen, who shared her perspective of the survey and the community.

With a moment of reflection, Neil shares his closing remarks.

Follow-Up to the Interview with Sarah Hargreaves on Soil Microbes in Prairies

Back in March, I posted an interview with Sarah Hargreaves, who recently completed her PhD studying soil microbial ecology at Iowa State University.  She gave us some great information about how we should be thinking about soil communities in prairies.  Some of you provided some excellent questions in the comments section (I had a few too), so Sarah graciously agreed to answer a few of them in this follow-up post.  I edited both the questions and her responses, so my apologies if I changed the context or meaning of either.  Questions from readers are in italics, and Sarah’s answers are below each question.  …A big thank you to Sarah for taking the considerable time needed to answer these.

How much are prairie plant communities driven by soil microbes?  How much can/should we be manipulating those soil communities?  There are way more questions than answers at this point, but the field or research is advancing rapidly.

How much are prairie plant communities driven by soil microbes? How much can/should we be manipulating those soil communities? There are way more questions than answers at this point, but the field of research is advancing rapidly.

Are archaea really a part of soil microfauna in prairies around here, or are we really talking about bacteria and fungi only? – Chris H

A survey of the dominant groups of archaea across a latitudinal gradient of native tallgrass prairie sites within the United States revealed that majority of sites have archaea, but in small abundance relative to other microbial groups (<5% total). We still don’t know about the functional significance of their presence, but I think it is fair to focus on fungi and bacteria when thinking about restoration.

 

What are the things land managers should be doing right now to help advance research in this critical field of studies?  I’d love to know what I should be doing before we begin our restoration projects to best track progress in microbes as we reestablish native grasses. Is this as simple as just taking soil samples? -Rachael R

My suggestion would be to take soil samples for the following purposes. First, you can use the soil samples for microscope counts of diversity (using the Soil Food Web method, for example). This is coarse, but is easy and can tell you something. I think the best approach would be to freeze a sub-sample of the soil for Phospholipid Fatty Acid (PLFA) analysis, which is a great tool for measuring fungal: bacterial ratios. The soil is stable at -20°C so it can sit frozen until you are ready to compare to your restored soils. If you are really keen, you could also track aggregate stability and total organic carbon as a measure of soil structure and carbon storage, which are both intimately connected with microbial activity.

 

I have thought several times about the possibility of transplanting small amounts of soil (say, a few 5-gallon buckets worth) from a remnant prairie into a prairie restoration to help re-diversify the soil organisms in these ecological restorations. What are your thoughts on this?  – Danelle H

I think the idea is a promising one, and one that farmers are starting to think about as a way to restore soil health for crop productivity. In fact, this is the premise behind compost teas (see Rodale Institute). When made properly, the idea of a compost tea is to have a substance ripe with good microbes and enough nutrients to get them started and that can be sprayed across larger areas. Unfortunately, there isn’t a lot of scientific data on this type of approach, including information on application rates and frequency, or the potential for amelioration in different soil/management types. I am sorry I don’t have a more definitive answer for you – it is a rapidly growing field and I think data on the efficacy of this type of inoculation is a high priority because of its relative ease. I also agree with Jonathan’s comment (below) about inoculating nurse plants if you are doing transplants.

…This was a response to Danelle’s question (above) when she posted it in the comments section of the initial blog post on this topic…

This paper might be helpful:http://onlinelibrary.wiley.com/doi/10.1111/j.1526-100X.2010.00752.x/full
Many of the micro-organisms that are likely to improve restoration outcomes (e.g. mycorrhizae) depend on plants. So, how you introduce those microbes to a restoration will matter. The study in the paper I linked to inoculated “nurse plants” and raised these seedlings before transplanting them, along with at least some components of the soil community. There’s lots of work left to do, but this approach seems really promising. It also doesn’t require a lot of soil, so damage to remnants can be minimal.  – Jonathan B

 

When most of us do prairie restoration (reconstruction), we focus mainly on harvesting and planting seeds.  We think a little about soils in terms of getting good seed-soil contact and the seed bank of weed species.  Should we be thinking much more about the soil microbial community and potentially adding to it?

When most of us do prairie restoration (reconstruction), we focus mainly on harvesting and planting seeds. We think a little about soils in terms of getting good seed-soil contact and the seed bank of weed species. Should we be thinking much more about the soil microbial community and potentially adding to it?

Can soil distribution of microbes be very abrupt in composition – for example, when we see a very distinct “vegetated wall” that seems to resist an invasive species that has consumed other areas of the prairie? – David

How quickly do soil organisms expand into former cropland habitat? – James M

In regards to boundaries and expansion of soil microbes: soil microbes disperse and lay dormant (i.e. are present, to a certain extent), so the rate limiting step affecting visible boundaries and lags with restoration is more likely attributable to the soil conditions not yet being good enough to promote a fully functional microbial community. It is like a positive feedback between soil structure, plant-microbe interactions (like symbiosis) and soil microbial community function, and it takes time (decades).

 

I’m especially interested in your comment that ‘prairie burns help maintain a good fungal to bacterial ratio by promoting fungal abundance’. Can you explain how prairie burns help promote fungi? – Teresa

Great question! A recent meta-analysis of data on fire effects on microbial communities suggests that microbial communities in grasslands are better adapted to respond positively to fire than those from other ecotypes (e.g. boreal and temporal forests). However, it is really not known why this is – perhaps due to release of nutrients that fungi are able to capture or indirectly through plant response, etc.?

We still have a lot to learn about how fires affect the soil microbes in prairies.

We still have a lot to learn about how fires affect the soil microbes in prairies.

Would you be able to make some suggestions to me for potential science fair projects in this area? It looks like a fertile area for research! – Novalene T

How great would it be to see microbe and prairie-related projects in a science fair! The low hanging fruit is probably to sample soil from different types of ecosystems, like a prairie and a lawn for example, and examine the microbial community under a microscope and try to count the number of different types of organisms as an index of diversity (you may look at Soil Food Web microscope guides for this). Or look for mycorrhizal infection rates in the roots from different ecosystems. You could also consider the “tea bag index of decomposition”, which is a method used to measure different rates of decomposition (i.e. microbial activity). If done according to the instructions in this link, data can be added to a global network!