UBAP staff are part of the team that found a wild alligator snapping turtle in Illinois, the first one seen since 1984. Currently working as part of a reintroduction program, Chris Phillips found the turtle while trying to locate a radio-tagged individual they had released in the area.
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Mussels are often referred to as “the livers of the rivers” because they filter materials from their environment. Freshwater mussels are also among the most imperiled groups of organisms in the world.
We arrived at the site around 8:30 and began unloading and setting up all of the gear needed for the day. A group of 20 biologists and land managers eagerly grabbed sampling bags, donned wetsuits, waders, snorkels and masks and each claimed their 10m stretch of the river.
When given the signal, we plunged our heads into the swift moving, 70F water to begin locating every mussel we could in our stretches of river and placing them in mesh bags attached to our waists. Much musseling is done by grubbing – shoving ones hands into the sediment and feeling around for mussels, which feel a bit like smooth rocks that hold on in the gravel with a fleshy foot. For some in the group, this was their first time musseling, and finding their first mussels was exhilarating.
After 30 minutes of sampling, we brought our bags of mussels back to the base station. Here, under the bridge with its constant rumble of vehicles speeding by, numbered tags were glued to each mussel. Some of the mussels also had a Passive Integrated Transponder (PIT) tag glued to their shell, which will enable them to be detected in the future without being removed from the river. Malacologists identified, measured, sexed, and aged each mussel before putting it back in its bag to be returned to its place in the river.
We continued these sampling sessions until the entire project area had been sampled. Over the lifetime of this project, thousands of mussels will be marked and measured. Many of the mussels we encountered had been marked in previous years, which will enable the scientists to document growth and survival over time as well as movement within the river.
As we left the site on the last day, we all looked forward to returning next year and hopefully finding those mussels and many new ones.
UBAP Ornithologist Anastasia Rahlin presented a poster at the Ecological Society of America conference held in Portland, Oregon from August 6th-11th. The poster reported on the environmental DNA research being conducted in collaboration with Mark Davis and Matthew Niemiller to collect presence-absence data on cryptic rails in Northern Illinois. The project is testing environmental DNA for bird detection and comparing it to traditional playback surveys.
Rahlin, A.A., M.A. Niemiller, and M.A. Davis. Using environmental DNA sampling methods to determine cryptic wetland bird occupancy in Illinois.
UBAP staff Michael J. Dreslik and Jason P. Ross recently presented at the 2017 Symposium on the Conservation and Biology of Tortoises and Freshwater Turtles. The meeting was held in Charleston, South Carolina from August 6th – 9th and has international attendance. At the meeting, they presented a poster on the effectiveness of passage gates along the Asian Carp Barrier and a co-authored oral presentation with a collaborator on the reproduction of Common Snapping Turtles which is in press in the Canadian Journal of Zoology.
Hedrick, A. R., H. M. Klondaris, L. C. Corichi, M. J. Dreslik. J. B. Iverson. The effects of climate on annual variation in reproductive output in Snapping Turtles (Chelydra serpentina). Oral Presentation.
Ross, J. P., C. Y. Feng, and M. J. Dreslik. Evaluating turtle passage gates using remote camera traps and visual encounter surveys. Poster Presentation. View Poster
Members of the Illinois Natural History Survey’s Urban Biotic Assessment Program hosted and advised an intern from the National Great Rivers Research & Education Center (NGRREC) 2017 Intern Program this summer. The intern worked on mapping the spread, determining geometric morphometrics, and genetics of a novel invasive species in the Corbicula genus. They attended the 2017 Annual NGRREC Intern Symposium from 31 July to 1 August 2017.
Presentations:
Reasor, E., S.A. Douglass, J.S. Tiemann, and M.A. Davis. Alien Invaders: Assessing the spread, genetics, and shape of a novel invasive clam.
Posters:
Reasor, E., S.A. Douglass, J.S. Tiemann, and M.A. Davis. Alien Invaders: Assessing the spread, genetics, and shape of a novel invasive clam.
ARC Lab members Ethan J. Kessler and Michael J. Dreslik received funding from The Nature Conservancy, Indiana to conduct surveying for the Alligator Snapping Turtle (Macrochelys teminckii). The surveys will be a combined effort of trapping and eDNA sampling in the Patoka and White River watersheds. The project also includes some proof-of-concept work for eDNA work at the southern Illinois release site. Survey work will commence this summer through fall.
Members of the Urban Biotic Assessment Program, Michael J. Dreslik and Sarah J. Baker, recently attended and presented at the Biology of the Snakes 2017 Conference in Rodeo New Mexico. They gave two oral and two poster presentations.
Oral Presentations
Dreslik, M. J., C. E. Petersen, S. M. Goetz, J. D. Kleopfer, and A. H. Savitzky. Spatial ecology of the Timber Rattlesnake (Crotalus horridus) from the mid-Atlantic coastal plain.
Dreslik, M. J., J. A. Crawford, S. J. Baker, W. E. Peterman, and C. A. Phillips. Detection probability and capture yield of an imperiled species.
Poster Presentations
Baker, S. J., M. J. Dreslik, C. A. Phillips, and M. C. Allender. Impact of snake fungal disease on population viability.
Dreslik, M. J., C. E. Petersen, S. M. Goetz, J. D. Kleopfer, and A. H. Savitzky. Factors affecting the movements of Timber Rattlesnakes (Crotalus horridus) from the mid-Atlantic coastal plain. View Poster
UBAP ecologist Matthew Niemiller accepted a faculty position at the University of Alabama, Huntsville where he will return to his research in cave biology. Matt received his M.S. in Biology from Middle Tennessee State University and a Ph.D. in Ecology and Evolutionary Biology from the University of Tennessee-Knoxville dissertation topic “Evolution, Speciation, and Conservation of Amblyopsid Cavefishes.” While with UBAP, Matt was responsible for accoustic monitoring of bats in the Chicagoland area. We wish him well and look forward to continued collaboration.
Follow his research here:
UBAP staff Dr. Michael J. Dreslik and James R. Wiker received funding from the Forest Preserve District of Will County to survey for the State Threatened Eryngium Stem Borer (Papaipema eryngii). The survey focuses on the sand prairie forest preserves in western Will County. To date, surveys have documented the presence of the moth at two of the three sites surveyed.
On July 18th, an in the field training session on identification and survey methods for the larvae of the species. During the training session Will County staff were provided hands on training and instruction and readily found two individuals.
Members of the Illinois Natural History Survey’s Urban Biotic Assessment Program and Herpetology Lab recently attended the Joint Meeting of American Society of Ichthyologists and Herpetologists, Society for the Study of Amphibians and Reptiles, and Herpetologists’ League in Austin, Texas from 12 July to 16 July 2017. They presented on a variety of topics from rattlesnakes to darters and from wildlife disease to community changes. The combined topics for presentations and posters were:
Presentations:
Baker, S. J., M. J. Dreslik, C. A. Phillips, and M. C. Allender. Impact of snake fungal disease on population viability.
Dreslik, M. J., C. E. Petersen, S. M. Goetz, J. D. Kleopfer, and A. H. Savitzky. Factors affecting the movements of Timber Rattlesnakes (Crotalus horridus) from the mid-Atlantic coastal plain.
Low, K. M., M. C. Allender, C. A. Phillips, and S. J. Kimble. A ranavirus-associated mass mortality event in an Illinois amphibian community.
Ross, J. P., C. Y. Feng, and M. J. Dreslik. Evaluating reptile and amphibian passage gates using remote camera traps.
Sites, A. J., J. L. Sherwood, J. S. Tiemann, and M. J. Dreslik. Assessing the distribution of Iowa Darters (Etheostoma exile) in streams of northern Illinois.
Posters:
Baker, S. J., and M. C. Allender. Comparison of testing methods for snake fungal disease.
Dreslik, M. J., C. E. Petersen, S. M. Goetz, J. D. Kleopfer, and A. H. Savitzky. Spatial ecology of the Timber Rattlesnake (Crotalus horridus) from the mid-Atlantic coastal plain. View Poster
Sherwood, J. L., and J. A. Stein. Habitat and fish community changes in Champaign County, IL over the past 100 years.
