Danny Szydlowski

Scientists look for cause of spike in swimmer’s itch plaguing Minnesota lakes The itchy red rash is caused by tiny parasites in the water that can burrow into human skin. Researchers are looking at whether certain waterfowl, invasive species or warming lakes could be factors.

Scientists look for cause of spike in swimmer’s itch plaguing Minnesota lakes www.mprnews.org/story/2025/0... by @kirstimarohn.bsky.social @mprnews.org

Two researchers stand on a dirt road between Peter and Paul Lakes. The lakes are surrounded by forest and there are white clouds in a blue sky.

It was a bittersweet farewell to UNDERC this week as I finished the final field season of my PhD. I’m grateful for the science I got to do as part of the Cascade Project and the wonderful people I’ve gotten to work with. I’m excited to see what comes next! @ndfieldecology.bsky.social

Assistant Professor - Environmental Geochemistry - Department of Environmental Science, Policy, and Management University of California, Berkeley is hiring. Apply now!

We're hiring for a second position in my department this year! Assistant Professor in Environmental Geochemistry. aprecruit.berkeley.edu/JPF05078

Scientists stunned by 'remarkable' reappearance of species thought to be extinct: 'One of the most historic comebacks ever' Thanks to successful conservation efforts, the leaf-toed gecko was found alive on the Galapagos Islands for the first time in centuries.

"We conducted extensive monitoring prior to the removal of invasive rats and they weren't detected at all. We believe a small population held on all those years and then, without invasive predators, it finally had the opportunity to recover & grow its population."
www.thecooldown.com/outdoors/lea...

Small lakes are suffocating as winters warm | PNAS Small lakes are suffocating as winters warm

Our overview of the impressive paper by Jensen et al in PNAS about under-ice oxygen levels is out.

"Small lakes are suffocating as winters warm"

www.pnas.org/doi/10.1073/...

Graduate Program Manager - Madison, Wisconsin, United States Current Employees: If you are currently employed at any of the Universities of Wisconsin, log in to Workday to apply through the internal application process.Job Category:Academic StaffEmployment Type...

Interested in managing graduate ecology programs and supporting excellent students? Come join us in the Dept. of Integrative Biology at @uwmadscience.bsky.social Apply by August 10.
jobs.wisc.edu/jobs/graduat...

A Shortnose Gar headshot is pictured against the backdrop of the Minnesota River. Obviously on the lookout for potential GARduate students.

JOIN US!!!

@garlab.bsky.social is looking for a PhD and MS student to join our team studying ecology & conservation of gars, bowfin, and other non-game native fishes beginning Spring 2026!

Posting & more info coming soon. Please DM or email srdavid@umn.edu with CV if interested!

Come join the MU Limnology Lab as the new field manager! To apply for this position, please visit the MU web site at hrs.missouri.edu/find-a-job/s... and look for job opening ID 56749.

I have a fully funded PhD position open for start in Jan or May 2026. Field work in peatlands of the Northwest Territories, with lab work to understand potential downstream mobilization of carbon, nutrients, mercury after thaw or wildfire. Reach out for more information, and please send on!

Collage of 5 photos depicting a plant with leaves, stems and roots. One photo was taken with a stereomicroscope.

ID Help: This specimen was found in a stormwater management pond (SWMP) in Ontario. It was found at 1-m depth, but given the dynamic water-levels of SWMPs, it could be an emergent plant rather than a submergent (which is what we are focused on). TIA for ID help. Cc @jolatimore.bsky.social

Warmer Lakes Support Phytoplankton Over Fish Climate warming is changing the balance of food webs in lakes. We studied northern lakes and found that warmer waters tend to support more phytoplankton but not more fish, suggesting that less energy...

Warmer Lakes Support Phytoplankton Over Fish. Glob Change Biol, 31: e70288. doi.org/10.1111/gcb....

I'm very excited to share that Hacking Limno + DSOS are coming back for the FIFTH time 21-25 July! If you're interested in #machinelearning #remotesensing #modeling #limnology #oceanography, this is for YOU! Registration is FREE + open to ALL! #DSOS25 aquaticdatasciopensci.github.io/registration/

BioTime 2.0 If we want to understand how biodiversity is shifting in this rapidly changing climate, we need two critical ingredients: microclimate time series and biodiversity time series. (And yes, let’s not …

**NEW DATABASE** - and it's a big one: BioTIME 2.0 is out!

I'll guide you through why this database is a game changer for anyone interested in species on the move
--> the3dlab.org/2025/05/21/b...

The paper --> doi.org/10.1111/geb....

Genome skimming supports two new crayfish species from the genus Pacifastacus Bott, 1950 (Decapoda: Astacidae) | Zootaxa

The result of nearly two decades of work, my coauthors and I have just described two new crayfish species from western North America: introducing the Misfortunate Crayfish and Okanagan Crayfish (doi.org/10.11646/zoo...). More to follow soon, but it should be open access - message if you need a PDF.

A boat sits on the shore of the heavily forested Paul Lake. The water is still and the sky is completely clear with the sun beating down on the lake, reflecting off the water. The boat has two oars and is prepared for someone to hop in and go sample the lake.

The first paper from my PhD is now out in @aslo.org Limnology and Oceanography Letters! We used nine years of daily temp and chl data from Peter, Paul, and Tuesday Lakes to show that aquatic heatwaves increased surface chlorophyll concentrations during 24 out of 29 events.

doi.org/10.1002/lol2...

Earth Signals YouTube video by Mead Witter School of Music

@fortynorth.bsky.social here’s the link! I’m glad you’re interested in sharing it!

www.youtube.com/live/os0evqD...

Tonight I got to hear El Niño and La Niña! Faculty and students from @uwmad-aos.bsky.social and UW’s School of Music collaborated to turn #climate data into beautiful music. Different notes represented peaks and troughs. Musical dissonance was disagreement between climate models and observed data

Calm lake surrounded by hills. The sky is blue, with a few clouds, and is reflected on the lake surface. The soft light indicates that it is likely the end of a nice summer day. How much carbon is stored in such a landscape?

You recently obtained a Ph.D. or are currently a postdoc, do not live in Canada but are looking to move to Canada? You are interested in watershed-scale carbon storage and transport? There is an oportunity to apply for a 3-year PDF fellowship in my institution (Université de Montréal), get in touch!

Are you excited as I am?
BECAUSE IT’S PHOSPHORUS WEEK !
Official declarations from governors of N Carolina (below), Wisconsin, and Illinois !

governor.nc.gov/governor-pro...

Two decades of bacterial ecology and evolution in a freshwater lake Nature Microbiology - A 471-metagenome time series from Lake Mendota in Wisconsin, USA, reveals seasonal and decadal shifts in bacterial functional and ecological dynamics, especially in response...

After 24 years of work, I’m thrilled to announce the TYMEFLIES dataset, which comprises metagenomes from Lake Mendota (Madison, WI), collected roughly every 10 days (471 samples) for 20 years! @quendi.bsky.social @robinrohwer.bsky.social

rdcu.be/d5put

A thread…

Frozen lake with trees and a grey sky.

A sign describing how to contribute to long-term photo records with a lake in the background.

Got to visit the Cedar Creek LTER this week! I jumped at the chance to contribute to their chronolog of this spot by Fish Lake—you can never have too many lake photos! Now home to @ntl-lter.bsky.social

image of a ropy green aquatic plant with spiny, finely divided leaves. Text reads "Coontail (Ceratophyllum demersum)". Image has rulers for scale showing the plant is about 20 cm long.

My #MacrophyteMonday plant is coontail (Ceratophyllum demersum)! This aquatic plant is a common and beneficial part of #Michigan #lake communities. It is sometimes confused with invasive Eurasian milfoil, but is easily distinguished (1/n).

Impacts of ash tree removals on summer daytime temperatures in Madison, Wisconsin - IOPscienceSearch Impacts of ash tree removals on summer daytime temperatures in Madison, Wisconsin, Elizabeth Berg, Christopher Kucharik

Removal of ash trees due to emerald ash borer infestation did not change daytime air temps in densely-developed Madison neighborhoods (recent study by NTL scientists Elizabeth Berg and Chris Kucharik): iopscience.iop.org/article/10.1...

map of Wisconsin waters with the 11 core NTL LTER lakes highlighted

NTL LTER samples 11 lakes year round and the data are publicly available! Seven lakes are in northern WI and have been monitored since 1981. The other four lakes are in southern WI and have been monitored since 1995 (although some records are 100+ yrs!)
lter.limnology.wisc.edu/core-study-l...

Started out my Thanksgiving morning with a visit from these otters. They were having a feast of their own!

I am looking for a PhD student to start in fall of 2025 at MSU. Potential topics include trait-based approaches to plankton community resilience, temperature effects on communities, harmful algal blooms and many others. Please get in touch if interested. More info: www.kl-lab.group.

Ecosystems | Volume 27, issue 7 Volume 27, issue 7 articles listing for Ecosystems

Lots of exciting papers in the current issue of ECOSYSTEMS--check out the TOC. Excellent submissions in ecosystem ecology (terrestrial, aquatic, marine) are always welcome, so keep us in mind. link.springer.com/journal/1002...

I’d also love to be added! Thanks!

Here's a Limnology starter pack! I am sure I left great people out so tag me so I can add them. go.bsky.app/Qv3DLZ6

Cyanobacteria cells under a microscope

Northwoods lake turning over brought a surprise cyanobacteria bloom today