California wetlands, Johnson Lab, Research, Amphibians

Welcome Home, Field Team!

Aug. 28, 2020

Despite the current pandemic, the Johnson Lab 2020 Field Team was able to collect host and parasite data from 80 ponds and wetlands in California this summer. Way to go!

California wetlands, Johnson Lab, NSF

NSF Grant for Dr. Pieter Johnson and Wynne Moss

Aug. 28, 2020

Dr. Johnson and Wynne have been given an NSF grant via the NSF-INTERN program! This program supports graduate students in collaborating with non-academic entities on research projects. Wynne will be working with the East Bay Regional Parks District in Oakland, CA to prepare an ecosystem health assessment using amphibians as...

Erica with her favorite snake

Congratulations to Erica, recipient of the 2020 Fulbright Scholarship!

April 17, 2020

Undergraduate researcher Erica Ursich has recently been awarded a Fulbright Grant to Brazil under the project title, "Snake Assemblage in the Atlantic Forest and the Impact of Edge-effect on Species Prevalence". She will be working with the Institute for Ecological Research, IPÊ (Instituto de Pesquisas Ecológicas) to help begin a...

Lake Isabelle

Publication alert: The Life Aquatic in High Relief

Feb. 28, 2020

We are excited to announce a new publication as part of Aquatic Science issue on mountain lakes featuring one aspect of our ongoing research into threats to alpine lake ecosystems : The life aquatic in high relief: shifts in the physical and biological characteristics of alpine lakes along an elevation...


An Update on Our Alpine Mesocosms

Feb. 28, 2020

In 2019, we began testing how reduced flushing rates (associated with earlier ice-off on lakes) and increased dissolved organic material (DOM) (associated with encroachment of terrestrial plants in the alpine watershed) interactively affect montane planktonic biomass and community structure. The experiment is currently underway for the first of two years,...

Travis at pond

Phenology Meets Pathology

Feb. 27, 2020

A newly published research article in the Proceedings of the Royal Society: B, led by PhD candidate, Travis McDevitt-Galles, highlights how intensity dependent pathology can be largely shaped by the degree of phenological synchrony between infection risk and vulnerable host stages. Read the full article here.

niwot, ice melt, alpine ecosystem, johnson lab

How is ice off changing?

June 19, 2019

We are currently piloting outdoor experimental tanks (mesocosms) in the alpine environment near CU Boulder's Mountain Research station. It is our hope that the black colored tanks reflect less sunlight than the beige colored tanks, effectively simulating early ice melt. We have plans to seed the tanks with sediment and...

hazel barnes, johnson lab

Hazel Barnes Prize Winner!

June 19, 2019

Since 1992, the Hazel Barnes Prize has been awarded each year to a CU Boulder faculty member who exemplifies the enriching interrelationship between teaching and research, and whose work has had a significant impact on students, faculty, colleagues and the university. Noted in the nomination materials as an advocate for...

Wynne Moss, Bev Sears Grant, Johnson Lab

Wynne earns Bev Sears grant!

June 19, 2019

Nine EBIO Graduate Students were awarded funding from the Graduate School through the Beverly Sears Grants and our Wynne Moss was one of them! The Bev Sears endowment fund was created to honor Bev Sears in recognition of her longstanding loyalty and efforts on behalf of the Graduate School. Bev...

Brendan Hobat, Johnson Lab

We are growing!

June 19, 2019

Please help us welcome Brendan Hobart to the Johnson Laboratory as our new PhD student! Brendan comes to us from the Peery Wildlife Ecology and Conservation Laboratory at the University of Wisconsin-Madison where he earned a Masters investigating the California spotted owl. Stay tuned to see what Brendan will work...

Tara Stewart Merrill, Johnson Lab

Meet Tara Stewart Merrill our new Post doc!

June 19, 2019

It's offical--Tara Stewart Merrill PhD from University of Illinois Urbana-Champaign will be joining the Johnson Laboratory in August! We are very excited to have Tara for a three year Post Doc where she will investigate how among-and-within- species variation in parasite competence affects the dynamic of infectious disease. Tara was...


A Day in the Field

Nov. 4, 2019

The Johnson Lab joins collaborators from UCSF Medical School (Nadav Ahituv and Jingjing Zhao) in a study to understand how parasites change the development of their hosts using transcriptome approaches.


Cat Parasite Linked to Entrepreneurial Career Choices

Nov. 4, 2019

A new paper coauthored by Stefanie Johnson at the Leeds School of Business and Pieter Johnson links infection by a widespread parasite to entrepreneurial careers in CU students. The paper explores the connection between the protozoan Toxoplasma gondii and patterns of entrepreneurship in students, business professionals and nations. See press...


World's Weirdest Events of BBC

Nov. 4, 2019

In the BBC television show World’s Weirdest Events , the Johnson Lab's research on parasite-induced deformities in amphibians is featured in episode 6, including footage of field and laboratory work as well as a sit-down interview with Dr. Johnson. October 10, 2015 Image by D. Herasimtschuk, Freshwaters Illustrated


Mindsuckers: Meet Nature's Nightmare

Nov. 4, 2019

In the November 2014 issue of National Geographic , the cover story focuses on the capacity of parasites to alter their hosts in bizarre yet fascinating ways. The accompanying story by Carl Zimmer features a broad range of examples, including the ability of the trematode parasite Ribeiroia ondatrae to cause...