Sapna Sharma

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/...

Hiring a data/lab manager in my research group! Mostly data “wrangling”, data viz, coding for analysis, lots of learning on the job, coordinating our global data projects with many collaborators, oversight of lab operations. 23 June deadline. Job # 78844 jobs.universityofcalifornia.edu

I was a little surprised to see something less studied than winter limnology! But there it is! Great to work with this team led by Faith Ferrato and the @sapnasharma.bsky.social team

Autumn as an overlooked opportunity for limnology

New Opinion article by Ferrato and colleagues:

"Autumn as an overlooked opportunity for limnology"

journals.plos.org/climate/arti...

@sapnasharma.bsky.social @joshculpepper.bsky.social @cearatalbot.bsky.social @mishafredmeyer.bsky.social @sehampton.bsky.social

Today on #World Environment Day, we’re launching 3 FREE courses on water sustainability: i) Climate change impacts on ice; ii) Indigenous relationships to water, and iii) Big data analytics. Enrol here: www.yorku.ca/research/wat...

Thank you to all of our contributors for sharing their expertise!

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/

New pub in @aguadvances.bsky.social: "A Soil Scientist Goes to Washington: Navigating the Path to National #ScienceLeadership" #STEM
Sharing my journey as DOE Office of Science Director, the challenges faced, and why inclusive excellence in STEM matters now more than ever.
Read: tinyurl.com/ms2nhr4f

A schematic diagram showing an idealised pattern of phytoplankton community succession, with and without a storm disturbance. The storm temporarily reverses the typical seasonal phytoplankton succession pattern.

Really good to have contributed to this new study, which uses long-term lake data to detect the impacts of storm events on seasonal phytoplankton growth: onlinelibrary.wiley.com/doi/10.1111/...

#freshwater #lake #algae #ExtremeEvents #Windermere
@ukceh.bsky.social

“It’s raining men” is one of my all time faves - indirectly water related with all of the meteorological drivers references.

Map of global lake distribution, colored by the number of SWOT overpasses per 21 day cycle. There are many lakes with a high number of SWOT overpasses at high northern latitudes, but there are also tens of thousands to more than a million lakes on every continent. Lakes are graphed by latitude and longitude on the edges of the figure.

Do you work on lakes globally? Check out what is, to my mind, the most complete global database of lakes (~6M) and associated attributes, newly published in WRR. Also the basis for SWOT lake data. agupubs.onlinelibrary.wiley.com/doi/full/10....

Thanks for sharing, Steve! I look forward to reading this, particularly as I’m involved in co-organizing several UN World Water Day activities this week.

Winter thermal structure across the Laurentian Great Lakes The formation of winter stratification and thermal structure in general across the Great Lakes varies in character not just between lakes, but interan…

Winter thermal structure across the Laurentian Great Lakes

#GreatLakes 🧪

www.sciencedirect.com/science/arti...

These ice-loving algae may play a big role in lake health. But time is ticking to learn more | CBC Radio Researchers are newly documenting a community of algae that hang around just under the ice surface using samples collected by divers. But climate change might threaten the algae — and the new collecti...

www.cbc.ca/radio/thecur...

What do largemouth bass do under ice in the winter? Read about it here in our latest paper in @cdnsciencepub.bsky.social journal CJFAS. cdnsciencepub.com/doi/full/10....

A reminder that the abstract deadline for the 2025 Physical Processes in Natural waters meeting is next week on Wednesday 26th February!

ppnw2025.smithengineering.queensu.ca/abstracts/

This promises to be a great meeting on processes in lakes, rivers, reservoirs and estuaries.

❄️💧🌊🐟🧪

An image of a tree-lined lake with the text, "We are hiring. Assistant Professor: Water Quality and Impacts of Climate Change. Visit careers.msu.edu. Job No. 1023203. Michigan State University."

Job: Come work with me! Please repost!

We're seeking a faculty colleague whose research, teaching, and outreach focuses on water quality and freshwater ecosystems in the context of climate change. Review of applications will begin April 15, 2025.

careers.msu.edu/jobs/assista...

Thanks for the update, Ichiro!

諏訪湖、今季は一度も全面結氷せず　真冬日なしが影響か　立春で「御神渡り」観察は一区切り｜信濃毎日新聞デジタル　信州・長野県のニュースサイト 今季、諏訪湖は一度も全面結氷しないまま、八剣神社（諏訪市）による観察は一区切りとなった。御神渡り出現の前提となる全面結氷が見られなかった要因として、宮坂清宮司は観測を始めた１月５日以降、最高気温が０度未満の「真冬日」がなかったことに着目。「張った氷が日中には解けてしまうので、結氷の範囲が広がらなか

Hi Sapna,

Lake Suwa did not freeze until Feb 3, the final observation day. Of course, Omiwatari did not occur this winter.

www.shinmai.co.jp/news/article...

Lake simcoe ice training

Ice rescue

Researchers from UTSC and York University took an ice safety and rescue course to prepare for winter limnology research on Lake Simcoe.

Thanks Ichiro!

Thank you for the update, Ichiro! It’s been a cold winter thus far here in Canada and we already have a lot more ice than we had last winter. Please keep me posted and happy new year!

Abrupt transformation of west Greenland lakes following compound climate extremes associated with atmospheric rivers | PNAS Arctic ecosystems are affected by accelerated warming as well as the intensification of the hydrologic cycle, yet understanding of the impacts of c...

A new study led by @umaine.bsky.social Climate Change Institute Associate Director, Dr. Jasmine Saros, shows significant rapid changes to Greenland lakes 🧪https://www.pnas.org/doi/full/10.1073/pnas.2413855122?

Evaluating the influence of snow and ice conditions on under‐ice light regimes, dissolved oxygen, and primary production in shallow lakes using controlled manipulative systems Shifts in hydroclimatic regimes associated with global climate change are affecting the timing and duration of winter ice-cover in temperate and high-latitude lakes. Less is known on how associated c....

Very excited to see some of my PhD work published after much (much) too long!

Using mesocosms and controlled ponds, we manipulated ice cover conditions and looked at the corresponding DO, light, and chlorophyll-a regimes.

aslopubs.onlinelibrary.wiley.com/doi/10.1002/...

Lake Superior: Current conditions, trends, and emerging threats – Foreword to the special section Lake Superior is one of the five Laurentian Great Lakes and the largest lake in the world by surface area. Lake Superior and its surrounding watershed…

Lake Superior: Current conditions, trends, and emerging threats – Foreword to the special section

#GreatLakes 🧪

www.sciencedirect.com/science/arti...

A global typological approach to classify lakes based on their eutrophication risk - Aquatic Sciences Understanding how lake ecosystems respond to anthropogenic disturbance and climate change is crucial to apply suitable adaptation and remediation measures for their sustainable management and protecti...

A new risk assessment framework to classify #lakes according to their resilience, or sensitivity, to #eutrophication. Applied to 1000 lakes globally.

Great working with #EiriniPoliti @brockmannconsult.bsky.social
Behind paywall though so DM me if you want a copy.

link.springer.com/article/10.1...

Widespread loss of safe lake ice access in response to a warming climate Millions of people rely on lake ice for safe winter recreation. Warming air temperatures impact the phenology (timing of formation and breakup) and quality (ratio of black to white ice) of lake ice co...

Out today is our paper in @plos.bsky.social examining the role of warming and ice quality on the safe use of lake ice.

Find it here: doi.org/10.1371/jour...

Thank you to my co-authors: @sapnasharma.bsky.social, Iestyn Woolway, and Lei Huang!

The Dept of Natural Resources and the Environment at Cornell University is hiring a new faculty in #Aquatic #Ecology and #Fisheries #Science. More info here:

academicjobsonline.org/ajo/jobs/29092

Congratulations Albert!!!

Registration for the award-winning Michigan State University Extension Introduction to Lakes Online course is open! This introductory six-week online class is designed for anyone interested in gaining a greater appreciation for inland lakes including concerned residents, decision makers, local leaders, and lakefront property owners. Course instructors include faculty from MSU Extension and state agency personnel. The course covers a variety of topics including lake ecology, watershed management, shoreline protection, aquatic plants, Michigan water law, and community engagement. These topics are explored online through video lectures, interactive activities, and discussion forums. Additional resources are also provided for those looking to dive deeper. Participants communicate with each other and instructors through lively discussion forums and biweekly Ask-an-Expert webinars which include guests from organizations such as the Michigan Department of Natural Resources and the Michigan Department of Environment, Great Lakes, and Energy. Registration is open now through January 28, 2025. The cost of the course is $115 per person. Register by January 6 for an early bird price of $95 per person. Scholarships are available. Current individual members of the Michigan Lakes and Streams Association are eligible to receive a $95 reimbursement upon successful completion of the course. A certificate of completion is awarded to those who complete the class. Participants also can receive continuing education credits including 16 Michigan Department of Agriculture and Rural Development Pesticide Applicator Re-Certification credits (8 commercial core and 8 aquatic) and educational hours in the MSU Extension Master Gardener, Master Citizen Planner, and Michigan Naturalist programs. Learn more and register at www.canr.msu.edu/lakesonline.

Registration for Michigan State University Extension's award-winning Introduction to Lakes Online course is open! This six-week online class is designed for anyone interested in gaining a greater appreciation for inland lakes.

Come learn about lakes with us!

www.canr.msu.edu/courses/intr...

I created a Winter #Limnology starter pack - please let me know if you'd like to be added (or removed)!
go.bsky.app/UnKfRfA