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Caitlin McWilliams

Echinacea Project 2021

I am part of the Class of 2025 at Carleton College and I plan to major in Environmental Studies.

Research Interests

In general, I am interested in helping to conserve natural prairie areas through networks and corridors so that they can become more resilient to climate changes. I am also curious about how to connect with stakeholders and landowners to make this happen, but also how to combine my interest in GIS with prairie restoration.

Statement

I am from Rochester, MN, but my home away from home is our cabin near Lanesboro, where I help to restore the surrounding native prairies, forests, and savannas. I also greatly enjoy hiking the bluffs there with my family and dogs.

Collecting seed with my dad at our cabin for Project Wingspan

Cassie Cunniff

Echinacea Project 2021

I am an Environmental Studies major at Carleton College, class of 2023.

Research Interests

I am interested in studying prairie conservation, as well patch ecology and the effects of fragmentation. I am also very interested in environmental interpretation/education and environmental justice.

Statement

I am from Mount Prospect, IL. In my spare time I like to hike, backpack, go thrifting, and read. I also play softball, and am on the varsity team at Carleton. I also really enjoy visiting National Parks (Glacier is my favorite).

Wanying Na

Echinacea Project 2021

My Major: I haven’t decided yet.

Educational Institution: Carleton College

Expected Graduation Year: 2024

Research Interests

I am interested in studying the evolutionary biology of prairie plants and how to better conserve them.

Statement

I am from Taiyuan, China. In my spare time I like to watch documentaries, walk in nature, read and watch Netflix etc.

(Here’s a photo of me)

QC, scanning, and a new x-ray machine!

Today, the Lake Forest College students returned for their second day at the lab. After cleaning heads last week, they moved on to the next steps of the ACE process today: quality control and scanning. They worked in teams of two, so one group rechecked cleaned heads from rem2020 and rem2021 while the other group scanned the achenes that had passed the quality control step. The students will have a dataset of 40 echinacea heads from 2021, 20 burned and 20 unburned, as well as 40 heads from 2020. They wondered whether the drought this summer affected seed production in echinacea or whether controlled burns influence achene count, and they developed hypotheses to test these questions.

The new x-ray machine also arrived this week! It showed up in an enormous wooden crate, but fortunately the machine itself is not that large. Today, the company representatives gave us a tutorial of how to operate the x-ray. We will need to do some trials to find the best settings and adjust our protocol to the new machine. For example, we will need smaller sheets of paper to fit in the x-ray. Based on today’s test run, it seems that the x-ray can only hold 15 bags of achenes (3 rows of 5) at a time instead of 20 bags (4 rows of 5). However, each image takes only 45 seconds, so hopefully it won’t slow down the process too much. According to the Kubtec website, this model is also good at x-raying explosives, art, and gems, so I guess that might come in handy, too.

Lake Forest College and Lightscape

Today, we welcomed four undergraduate students from Lake Forest College: Alondra, Connor, Maeve, and Marina. As part of their plant biology class, they will conduct a project related to fire’s effect on echinacea reproduction. At the lab, they will gain hands-on experience for three Wednesday afternoons, and their project will culminate with a poster presentation. Today, everyone learned how to clean heads from the rem 2021 harvest. Next week, they will develop their hypotheses and hopefully practice scanning and counting achenes from remnant echinacea populations.

This evening after dark, several of us attended the Chicago Botanic Garden’s annual lightshow, called Lightscape. At night, the garden was completely transformed by holiday music, elaborate sculptures, a laser show, and even a glowing ball of yarn. It was quite impressive!

Updating and maintaining prescribed fire equipment

With a busy burn season ahead of us, I took some time in late October to maintain the equipment we use for prescribed burns. During a hectic spring 2021 burn season, we encountered several issues. A handful of 5-gallon backpack pumps were not functioning well and one of our drip torches was constantly acting up (especially while using the leftover “spicy” fuel mix).

During spring 2021, I noticed two of our 5-gallon backpack pumps had cracked pump cylinders and would need to be replaced. I tried applying plumber’s epoxy to the cracked cylinders last spring but the pressure created by the pump inevitably caused this epoxy to fail. Over the summer, we purchased replacement outer cylinders for the backpack pump assemblies. I rebuilt the pump assemblies and installed these cylinders last week. The pumps seems to be working properly now. We should be very diligent about making sure all water has been expelled from tanks and pump assemblies prior to winter storage to avoid cracked cylinders.

We also purchased four harnesses and two pairs of padded straps for our 5-gallon pumps. These provide a welcome upgrade over the notoriously uncomfortable thin straps that come with the backpack pumps. We now should have 6 fully functional (and comfortable!) backpack pumps for burning.

Rebuilding the troublesome drip torch was a priority for me. After inspecting the torch, I realized one if not the problem was a badly deteriorating collar gasket (the big O-ring). I replaced this gasket along with the smaller O-ring on the discharge plug. Pro-tip: Forestry Suppliers sells discharge plug O-rings for drip torches but the ones they sell are too large. I found the #9 O-rings (5/8 in. outer diameter x 7/16 in. inner diameter x 3/32 in. wall) that are readily available at just about any hardware store work much better. I also replaced the breather valve assembly on this drip torch.

This brings up a more general point about the importance of maintaining burn equipment. At the beginning of the burn season we should:

  • Check to make sure all 5-gallon backpack pumps are functioning properly
    • Check to make sure gasket is intact and installed in top lid
    • Inspect pump cylinder for cracks
    • Inspect nozzle and make sure it is clear of debris
    • Install paper clip used to clear nozzle obstructions
    • Ensure nozzle is set on adapter with two holes (single hole adapter not very effective or water-efficient for extinguishing grass fires)
    • Fill each tank with water and test pump
  • Check drip torches
    • Inspect integrity of collar gasket, replace immediately if damaged
    • Inspect integrity of discharge plug O-ring, replace if damaged
    • Check for obstructions or debris that could impede flow of fuel
  • Rakes and swatters
    • Locate metal rakes and swatters
    • Check integrity of the swatters (these can melt and deteriorate making them ineffective)
    • Note any tools that need replacing
  • Kestrel
    • Locate Kestrel 3500FW and test unit/check battery
    • Locate or purchase additional (new) battery

At the end of the season:

  • 5-gallon backpack pumps
    • Ensure all water and excess moisture has been expelled from 5-gallon pumps
    • Inspect integrity of gasket on tank lid
  • Drip torch
    • If empty, use paper towel to clean interior and remove debris
    • Check integrity of collar gasket and discharge plug O-rings
  • Return rakes and swatters to G3
  • Hang Kestrel 3500FW from wooden dowel above shelf between main room and bathroom in Hjelm

Volunteers and mystery bees

Visiting Minnesota to plant seeds last week was a welcome break from sitting at a desk all day. However, we were glad to be back in the lab this week. On Thursday, I finished the inventory of the remnant 2021 heads, so they are now ready to be cleaned by volunteers.

We have a great crew of volunteers this fall. Suzanne wins the award for the longest volunteer record; she has been helping the Echinacea Project since 1999! In contrast, Elif joined the lab in 2019 and is our newest volunteer. So far, all of the volunteers have been cleaning seed heads, an important early step in the ACE workflow. However, many of them specialize in other steps of the process such as quality control, scanning, randomization, weighing, x-raying, counting, or classifying. Once we have made a dent in the backlog of seed heads, the volunteers will be able to diversify and find the steps that they enjoy most.

Our other project this week was to clean out the freezer in the lab. The freezer mainly contained coolers of empty vials that were used to collect bees for the Yellow Pan Trap (YPT) project. As Mia and I sorted through the vials, we also discovered one cooler that still contained bees! Why were these bees collected? To what project do they belong? Why haven’t they been pinned like all the other bees? According to Detective Stuart, “We have a mystery to solve. First stage is to gather evidence. (Don’t disturb the scene of the crime.)” I followed Stuart’s instructions and returned the cooler to the freezer. After doing some sleuthing, I now suspect that vial GQ-9417 contains YPT specimens that were collected on 31 July 2019. The other vials, however, remain a mystery. If anyone can identify the suspects or has information about the day of the crime, 16 July 2019, please let me know.

Wrapping up the field season

It has been a hectic couple weeks for the Echinacea Project. Last week we braved fog, wind, and rain to wrap up the 2021 field season. Mia and Alex drove up from Chicago to help finish planting and pick up flags in the remnants.

On Thursday and Friday, Mia, Alex, and I sowed Echinacea seed in the 76 transects that comprise our seed addition experiment. This experiment will help us quantify the effects of fire and other environmental variables on seedling emergence and survival.

The planting went smoothly, we averaging approximately 2 minutes per transect. Prior to sowing seeds, we located transects and found nails designating the start and end of focal 1-m segments. We laid a meter stick on the ground stretching from start nail to end nail. We then spread seeds evenly between the 5 and 95 cm marks of the meter stick in line with the transect. Once empty, each seed envelope was given one last flick to dislodge any stubborn achenes and we gently tapped the meter stick against the ground to ensure any achenes that landed on blades of grass or other vegetation were not catapulted across the prairie when we picked up the meter stick.

Barring a shift in the weather that brings more favorable conditions for burning, Team Echinacea has moved indoors for the winter.