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Benjamin Kraemer

@limnobenja.bsky.social
1.1K followers 416 following 62 posts

Global Change Aquatic Scientist | Grew up in USA, lives in Germany, misses Tanzania | sites.google.com/view/benjaminkraemer/home

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Benjamin Kraemer @limnobenja.bsky.social · 12/10/2026
Any of the three topics alone could still make a good fit.
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Benjamin Kraemer @limnobenja.bsky.social · 09/10/2026
My partner Catalina is hiring a 2-year postdoc in landscape ecology, remote sensing & human–environment interactions! I may be biased, but she's a brilliant scientist and incredibly caring supervisor. And the job is in Innsbruck. I mean, come on! Apply by Nov 2! lfuonline.uibk.ac.at/public/karri...
The Inn River in the foreground, a row of colorful houses in the middle ground, and mountains rising in the background.
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Benjamin Kraemer @limnobenja.bsky.social · 12/06/2026
@mridulkthomas.bsky.social @drlimnology.bsky.social @jdtonkin.bsky.social @sehampton.bsky.social @goodgracious23.bsky.social @hildug.bsky.social @narwani.bsky.social
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Benjamin Kraemer @limnobenja.bsky.social · 12/06/2026
Has aquatic science shifted away from population ecology toward other scales? A bibliometric analysis suggests population-focused language peaked around the 2010s and has since declined, while community-focused language has continued to rise. What do others think? rpubs.com/bkraemer/AquaPopCom_v1
Line chart showing the relative frequency of population-family and community-family terminology in four aquatic science journals from 1980 to 2025. The y-axis shows summed papers mentioning each term family per 1,000 articles. Population-family terms include population and metapopulation; community-family terms include community and metacommunity. Population-family language is more common through much of the early record, but declines after roughly 2015, while community-family language increases or remains comparatively high and surpasses population-family language around that time.
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Anna Schmidt @annaschmidt.bsky.social · 16/04/2026
Registration is open for the 2026 Global Lake Ecological Observatory Network (GLEON) All-Hands’ Meeting taking place at Lake Banyoles, Spain from August 30 - September 4, 2026! Participation support for students/ECRs is available through the Freshwater Futures Fellowship (deadline April 24). 🌎🌍🌏
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Benjamin Kraemer @limnobenja.bsky.social · 02/04/2026
Just in case you had any doubts that ChatGPT is still hallucinating.
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hydrofreiburg.bsky.social @hydrofreiburg.bsky.social · 02/04/2026
😂😂😂😂😂😂😂😂😂😂
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Benjamin Kraemer @limnobenja.bsky.social · 02/04/2026
Quick experiment: Please take a moment and ask ChatGPT in conversation mode (use voice) how many "R's" there are in the word "strawberry." Comment here what answer it gives.
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Benjamin Kraemer @limnobenja.bsky.social · 01/04/2026
After two years of focusing my aquatic ecology class almost entirely on lakes, I’m excited to expand into stream ecology this year. We will compare and contrast depth gradients in lakes with elevation gradients in a nearby stream which climbs from 312 m to 659 m, all within just 3 km of campus.
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Benjamin Kraemer @limnobenja.bsky.social · 30/03/2026
In aquatic ecology, what is “spring”? A calendar date, a daylength threshold, or the moment lake ice melts? Led by @aslewis.bsky.social , we show how seasonal definitions fundamentally shape our understanding of climate change impacts on waterbodies. dx.doi.org/10.1002/lol2...
dx.doi.org
Seasons and seasonality in lakes: A synthesis amid global change
Seasonality in environmental conditions plays a fundamental role in shaping lake ecosystems. However, patterns of seasonality vary worldwide, and these patterns are shifting over time amid global cha...
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Benjamin Kraemer @limnobenja.bsky.social · 06/03/2026
@kjhealy.co makes some of the best open free online guides to data visualization #datavis. I’ve always loved and used clauswilke.com/dataviz/ in my teaching and research, but this one looks even simpler and more user-friendly. Definitely worth checking out.
clauswilke.com
Fundamentals of Data Visualization
A guide to making visualizations that accurately reflect the data, tell a story, and look professional.
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Peggy March @rebelgeo.bsky.social · 25/02/2026
science.nasa.gov/earth/earth-...
science.nasa.gov
Island in a Lake on an Island in a Lake on an Island - NASA Science
An unnamed isle in Canada’s Nunavut Territory is the leading contender for this island superlative.
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Benjamin Kraemer @limnobenja.bsky.social · 21/02/2026
Generate your own: marshdeer.github.io/xkcd2501-gen...
A black-and-white xkcd-style comic. Two stick figures stand talking. One says, “Lake classification is second nature to us limnologists, so it’s easy to forget that the average person probably only knows one or two trophic states.” The other replies, “And mixing regimes, of course.” A caption below reads: “Even when they’re trying to compensate for it, experts in anything wildly overestimate the average person’s familiarity with their field.
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Li Li (李黎) @lireactivewater.bsky.social · 10/02/2026
#WARR @carowinter.bsky.social + Ashley Helton on water quality (C, N, salts, ..) in troubled waters during #floods #droughts Register: psu.zoom.us/meeting/regi... www.cee.psu.edu/events/women... @devonkerins.bsky.social @margaretzimmer.bsky.social @waterbarnes.bsky.social @agu-h3s.bsky.social
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Carolin Winter @carowinter.bsky.social · 10/02/2026
Here's why you'll want to be there: 💧Inspiring speakers: Prof. Dr. Julia Knapp and Dr. Joachim Rozemeijer 💧Two full days of oral and poster presentations 💧Excursion (tentative) to our Ecosense field site 💧Potential for a community paper 📢Spread the word! We look forward to seeing you!
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Dr Michelle LaRue @drmichellelarue.bsky.social · 28/10/2025
K051 (my “event number”, the unique identifier for each science project) made it to Antarctica! Flew on a C17, only delayed by an hour, too. Thanks US Air Force and Antarctica NZ, now the fun begins. 🧪🦑🦊🦉🌎
Five people bundled up in cold weather gear stand on the ice in front of a military cargo plane, in Antarctica
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Mridul K. Thomas @mridulkthomas.bsky.social · 15/09/2025
This @gleonetwork.bsky.social workshop series is aimed at limnologists but it's open to all. We are targetting PhD students and postdocs across the environmental sciences.
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Mridul K. Thomas @mridulkthomas.bsky.social · 15/09/2025
@raviranjan.bsky.social & I are teaching a free online workshop with on experimental design for environmental scientists on the 23rd. We'll focus on using simulations to evaluate how well different experimental designs help achieve your goals. Please sign up & share! forms.gle/MZTxeQs4UpMr...
Poster for 90 minute workshop on HOW TO DESIGN BETTER EXPERIMENTS, by Mridul Thomas & Ravi Ranjan. 

Details: September 23rd 16:00 CEST ; 14:00 UTC

Description: 

Experimental designs can make or break an experiment. A good experiment has a clear goal and efficiently uses experimental resources to achieve that goal. In this workshop, we will review what experiments are for, basic and advanced principles of designing experiments, and how to use simulations to evaluate designs before actually doing the
experiment. We’ll do a moderate amount of coding in R and so experience with this would be helpful but is not required. We intend to have small-group discussions to help participants develop their own experiments, and encourage participants to think of a specific question they would like to answer with an experiment.
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Stephanie Hampton @sehampton.bsky.social · 03/09/2025
It takes patience to have a conversation about definitions as a collaboration begins... but it is important! "Trophic state" in lakes is one of those concepts! It really makes a difference which definition we use... @mishafredmeyer.bsky.social esajournals.onlinelibrary.wiley.com/doi/10.1002/...
esajournals.onlinelibrary.wiley.com
Clarifying the trophic state concept to advance macroscale freshwater science and management
For over a century, ecologists have used the concept of trophic state (TS) to characterize an aquatic ecosystem's biological productivity. However, multiple TS classification schemes, each relying on....
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Carolin Winter @carowinter.bsky.social · 02/09/2025
📢 Job alert 📢 Doctoral position at the University of Freiburg in the DFG Research Training Group FORESCALE (Scale Effects in the Forest Adaptation to Climate Change) on the topic of water quantity and quality 🍁💧🍁 For details see: uni-freiburg.de/stellenangeb...
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Benjamin Kraemer @limnobenja.bsky.social · 05/08/2025
Historical satellite imagery provides crucial insights, not only for penguin colonies but also for establishing realistic baselines to support conservation efforts and effective management across broad spatial scales. academic.oup.com/bioscience/a...
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Benjamin Kraemer @limnobenja.bsky.social · 05/08/2025
We've detected penguin guano stains across Antarctica with cold-war era spy satellites. Remarkably, data from the Cape Washington colony shows exceptional stability, defying decades of environmental change. www.biorxiv.org/content/10.1...
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Benjamin Kraemer @limnobenja.bsky.social · 05/08/2025
Analog US spy satellite images from the 1960s are revealing unexpected surprises—this time, it's penguin poop! So, what does the poop tell us in our latest preprint? Work lead by Martynas Bielinis, @drmichellelarue.bsky.social, myself, and Catalina Munteanu
media.tenor.com
a large flock of penguins are walking in the snow with national geographic wild written on the bottom right
ALT: a large flock of penguins are walking in the snow with national geographic wild written on the bottom right
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Mridul K. Thomas @mridulkthomas.bsky.social · 15/07/2025
A couple of forthcoming workshops on experimental design and data analysis, taught by @christinamcgraw.bsky.social, Peter Dillingham, @sineadcollins.bsky.social, Sam Dupont, and me.
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Benjamin Kraemer @limnobenja.bsky.social · 09/07/2025
Back in my happy place: sending more fully equipped students out to explore lakes in the Black Forest—waters which, to my knowledge, have never been touched by aquatic ecologists. Let the discoveries begin. 🛶🧪🌲
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Benjamin Kraemer @limnobenja.bsky.social · 03/07/2025
"Absolute teaching bliss" ☺️ is sending two bachelors students in a kayak to collect the first ecological data in over 70 years from a lake so protected, swimming and boating are off-limits. With special permission granted, they’re experiencing something virtually no living human has experienced.🚣‍♀️⛰️🌊
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Jenna Robinson, PhD @jrob09.bsky.social · 23/05/2025
Extremely proud to be working on the Survey of Climate and Adirondack Lake Ecosystems (SCALE)! Check out this article which highlights what we will be doing. www.adirondackexplorer.org/stories/rese...
adirondackexplorer.org
Researchers launch study of hundreds of Adirondack lakes
A consortium of scientists and other researchers are starting a three-year survey of hundreds of Adirondacks lakes and ponds
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Michael Meyer @mishafredmeyer.bsky.social · 22/05/2025
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/
aquaticdatasciopensci.github.io
Registration
Conference Template
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Robert Ladwig @hydrobert.bsky.social · 22/05/2025
So happy to share the news that we’re hosting the FIFTH iteration of Hacking Limnology/DSOS this summer! It will be a fest!
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Benjamin Kraemer @limnobenja.bsky.social · 19/05/2025
Here is the response to reviewers: andymasley.substack.com/p/replies-to...
andymasley.substack.com
Replies to criticisms of my posts on ChatGPT & the environment
Why I used 3 Wh, and why I don't say "Every Watt-hour matters"
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Benjamin Kraemer @limnobenja.bsky.social · 19/05/2025
"If you're already trying to live low-impact—recycling, avoiding plastic, limiting flights—here’s a chance to make a meaningful tech choice that aligns with those values. LLMs aren't evil by default, but they’re energy-intensive, and we need to ask whether the benefits we get justify their costs."
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Benjamin Kraemer @limnobenja.bsky.social · 19/05/2025
"ChatGPT, how could I reframe my post so that it is more constructive and persuasive?"
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hydrofreiburg.bsky.social @hydrofreiburg.bsky.social · 14/05/2025
Read the paper → agupubs.onlinelibrary.wiley.com/doi/10.1029/...
agupubs.onlinelibrary.wiley.com
Forest Dieback in Drinking Water Protection Areas—A Hidden Threat to Water Quality
Forests cover 43% of German drinking water protection areas, making their vitality state critical for safeguarding drinking water quality German drinking water protection areas experienced a 4.8%...
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hydrofreiburg.bsky.social @hydrofreiburg.bsky.social · 14/05/2025
@carowinter.bsky.social recently appeared on SWR to talk about her new paper on how forest dieback from drought is threatening groundwater quality in Germany. A must-watch segment on the hidden risks to our drinking water. Catch her at 14:59 into the video → www.ardmediathek.de/video/swr-ak...
ardmediathek.de
SWR Aktuell Baden-Württemberg: Sendung 19:30 Uhr vom 9.5.2025 - hier anschauen
Nachrichten aus Baden-Württemberg mit Florian Buchmaier.
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Peter Gleick @petergleick.bsky.social · 02/05/2025
Do you like water? Do you like movies? I've updated my compilation of water-related movies, documentaries, TV series, and sci-fi disasters related to water. Here it is: www.gleick.com/blog/water-a...
gleick.com
Water at the Movies
Water is a theme that runs through all forms of popular culture, from books to myths to documentariesto Hollywood and international films, with a growing number of shorter video pi
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Benjamin Kraemer @limnobenja.bsky.social · 02/05/2025
Mini-lecture #3 in my series called #AquaticPerspectives– Are We the Only Blue Planet? Earth is rich in water—but so are Europa, Enceladus, and Titan, among others. In this episode, I explore what these alien oceans mean for Earth and the search for life beyond. youtu.be/nboQ28tLuBU
youtu.be
The blue planet and beyond
YouTube video by Benjamin Kraemer
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Benjamin Kraemer @limnobenja.bsky.social · 24/04/2025
Can a lake’s shape tell its story? Video #2 in my Aquatic Ecology mini-lecture series is now live! This one explores how the curves, contours, and complexity of waterbodies can reveal their origin, function, and fate. Watch here and let me know what you think: youtu.be/mFXD1F00lHs
youtu.be
The shape of waterbodies
YouTube video by Benjamin Kraemer
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Carolin Winter @carowinter.bsky.social · 24/04/2025
🗞️New paper in Earth's Future🗞️ 🌳🌲🍂💧🍂🌲🌳 #Forest dieback in drinking #water protection areas - a hidden threat to water quality 🌳🌲🍂💧🍂🌲🌳 Paper👉 doi.org/10.1029/2025... Press release👉 uni-freiburg.de/waldsterben-... @uni-freiburg.de @hydrofreiburg.bsky.social @mixedforests.bsky.social
doi.org
Forest Dieback in Drinking Water Protection Areas—A Hidden Threat to Water Quality
Forests cover 43% of German drinking water protection areas, making their vitality state critical for safeguarding drinking water quality German drinking water protection areas experienced a 4.8%...
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Carolin Winter @carowinter.bsky.social · 24/04/2025
Find us at EGU 🤓 I will talk about our paper published today on the hidden threat of forest dieback to drinking water quality 🍂💙
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Carolin Winter @carowinter.bsky.social · 24/04/2025
🙌 Great interdisciplinary collaboration, highlighting the important but threatened role of forests for drinking water protection, together with Sarina Müller, Teja Kattenborn, Kerstin Stahl, Kathrin Szillat, Markus Weiler & Florian Schnabel (@mixedforests.bsky.social)
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hydrofreiburg.bsky.social @hydrofreiburg.bsky.social · 24/04/2025
Did you miss the Wasser im Wandel event at the Konstanzer Wissenschaftsforum? Watch it online — including a presentation by our very own Kerstin Stahl, titled “Drought and its changing consequences.” Watch here → youtu.be/IBrUiRCcJHo?t=4279 Event details → www.uni-konstanz.de/wasser-im-wa...
youtu.be
Tag 2: Das Konstanzer Wissenschaftsforum – Wasser im Wandel
YouTube video by Universität Konstanz
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hydrofreiburg.bsky.social @hydrofreiburg.bsky.social · 24/04/2025
Excited to share our research at this year’s #EGU25 next week— from forest water fluxes to flood mapping and groundwater stressors. Thanks to @carowinter.bsky.social for pulling together our schedule! Come find us if you’re curious, collaborative, or just passing by.
📌 Monday

Heinke Paulsen | Storage and redistribution of water in the forest floor... (Poster, X3, 10:45–12:30)

Jonas Pyschik | Insights into Preferential Flow from Sprinkling Experiments (Poster, Hall A, 10:45–12:30)

Immanuel Frenzel | Diffuse sources of TFA at the catchment scale (Poster, Hall A, 14:00–15:45)

Lea Dedden | Spatio-temporal throughfall patterns in forests (Poster, Hall A, 14:00–15:45)

Carolin Winter | Forest Dieback & Drinking Water Quality (Oral Highlight, R 2.15, 17:50–18:00)

📌 Tuesday

Sebastian Gnann | Large sample hydrology and the value of data (Invited PICO, Spot A, 08:30–08:40)

Markus Weiler | The crux with variability (Oral, R -2.33, 17:40–17:50)

📌 Wednesday

Sebastian Gnann | Streamflow sensitivity in alpine catchments (Poster, Hall A, 08:30–10:15)

📌 Thursday

Markus Weiler | Flood source areas & peak contribution (Oral, Room B, 16:45–16:55)

📌 Friday

Heinke Paulsen (with Christoph Huebner) | Monitoring groundwater recharge & DOC (Poster, Hall A, 10:45–12:30)

Kerstin Stahl (with Robin Schwemmle) | Groundwater stressors from agriculture & hydrology (Poster, Hall A, 10:45–12:30)

Stefan Seeger | How many sensors do you need for sap flux? (Oral, R 2.44, 11:50–12:00)
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Benjamin Kraemer @limnobenja.bsky.social · 23/04/2025
I’m launching a series of short videos to ignite student curiosity before coming to my aquatic ecology class. We’ll explore aquatic geography, physics, chemistry, ecosystems, communities, populations, biogeography, senses, and behavior. Here's the first: youtu.be/vcJtHPePCwc
youtu.be
The birth and death of waterbodies
YouTube video by Benjamin Kraemer
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hydrofreiburg.bsky.social @hydrofreiburg.bsky.social · 23/04/2025
The takeaway from the StressRes workshop? Technical solutions alone won’t solve groundwater conflicts. What’s missing is a shared understanding of sustainability, clear priorities in times of scarcity, and communication that bridges science, policy, and the public. Learn more: tinyurl.com/StressRes
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hydrofreiburg.bsky.social @hydrofreiburg.bsky.social · 23/04/2025
What did we learn? Sustainable groundwater management is anything but simple. We’re equipped with more information than ever—yet lack a shared understanding of what sustainable use really is. #Grundwasser #Bewässerung #Wasserpolitik #Digitalisierung #StressRes
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hydrofreiburg.bsky.social @hydrofreiburg.bsky.social · 23/04/2025
Climate stress, irrigation demands, growing cities – the pressure on groundwater is mounting. On April 8, the StressRes project brought together scientists, water utilities, authorities, and farmers in Freiburg to ask: What does “sustainable” actually mean – and who decides? #Wasserressourcen
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Benjamin Kraemer @limnobenja.bsky.social · 17/04/2025
Dodging earthworms on my ride to work this morning like: 🪱🚴‍♂️
media.tenor.com
a man in a yellow suit and green mask is standing on a stage .
ALT: a man in a yellow suit and green mask is standing on a stage .
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Benjamin Kraemer @limnobenja.bsky.social · 08/04/2025
Was this call to action informed by rigorous cost-benefit analysis? While detection and prevention are important, we shouldn't overlook that quagga mussels can also provide ecological benefits such as improving water clarity and sequestering carbon. link.springer.com/article/10.1...
link.springer.com
Ecosystem services provided by the exotic bivalves Dreissena polymorpha, D. rostriformis bugensis, and Limnoperna fortunei - Hydrobiologia
The ecosystem services approach to conservation is becoming central to environmental policy decision making. While many negative biological invasion-driven impacts on ecosystem structure and functioni...
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