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Benjamin Kraemer

@limnobenja.bsky.social
1.1K followers 405 following 60 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 · 12/06/2026
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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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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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
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 · 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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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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Long Term Ecological Research Network (United States) @uslter.bsky.social · 13/02/2025
Did you know the LTER maintains a thriving job board? From REU positions to faculty hires, our sites have dozens of openings each year. Several just got posted! You can check them all out here: lternet.edu/opportunities/
lternet.edu
Opportunities Archive - LTER
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Benjamin Kraemer @limnobenja.bsky.social · 04/04/2025
I'm putting together a waterbody-themed playlist for my aquatic ecology class — something fun to play during class breaks and field trips. I’d love your suggestions! 🎶 Got any favorite songs that mention waterbodies, evoke aquatic vibes, or make you want to jump in a lake? #BlueSkyBrainstorm
media.tenor.com
a stream of water is flowing through rocks in the woods .
Alt: water passing between two rocks in a streama stream of water is flowing through rocks in the woods .
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Samuel Dijoux @dijouxsam.bsky.social · 31/03/2025
Dear 🌐colleagues, don't hesitate to join the 3rd wave of Global Ecology! -> DM @global-ecology.bsky.social to be added go.bsky.app/MkLHiKU
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Eawag Aquatic Research @eawag.bsky.social · 25/03/2025
📢💪 Francesco Pomati is the new chair of the Aquatic Ecology department. As a scientific all-rounder with a well-filled backpack from various research areas, he has always been keen to build bridges between different disciplines. 👉 Aquatic Ecology: www.eawag.ch/en/departmen...
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Michael Meyer @mishafredmeyer.bsky.social · 08/01/2025
Do you do #remotesensing of aquatic environments, but you want aquatic surface reflectance data. Well, we processed the entire #Sentinel2 record for #AQUATIC surface reflectance in the Contiguous US. You can now access those data from Amazon Web Services for FREE! registry.opendata.aws/usgs_aqr/
registry.opendata.aws
Sentinel-2 ACOLITE-DSF Aquatic Reflectance for the Conterminous United States - Registry of Open Data on AWS
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Tamlin Pavelsky @globalhydro.bsky.social · 19/03/2025
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....
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.
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Benjamin Kraemer @limnobenja.bsky.social · 17/03/2025
When the #Kakhovka Dam was destroyed, global attention focused on the immediate humanitarian crisis—flooding, displacement, and lost infrastructure. But the hidden environmental disaster may be even more dangerous in the long run. www.bbc.com/news/world-e...
edition.cnn.com
Here are the key theories on what caused Ukraine’s catastrophic dam collapse | CNN
The collapse of the Nova Kakhovka dam in southern Ukraine is one of the biggest industrial disasters in Europe for decades. The catastrophe has destroyed entire villages, flooded farmland, deprived te...
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Benjamin Kraemer @limnobenja.bsky.social · 13/03/2025
Why is it so hard for some people to just apologize, especially in the workplace? 🙄. "I'm sorry you feel that way" is NOT an apology. "I will do better in the future" is NOT an apology. "I recognize that what I did was wrong, and I take full responsibility" is an apology.
media.tenor.com
a man says i sincerely while wearing a green vest
ALT: a man says i sincerely while wearing a green vest
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hydrofreiburg.bsky.social @hydrofreiburg.bsky.social · 12/03/2025
This compels us to rethink water management: from local ecosystems to global climate models, topography is a hidden key. Dive into the full story and explore how this new perspective reshapes our understanding: Read more: tinyurl.com/EOStopography Original article: tinyurl.com/TopoWater
eos.org
Topography and the Terrestrial Water Cycle - Eos
The relationship between topography and the terrestrial water cycle has been documented for thousands of years, yet there is still much to learn about Earth’s complex dynamics – both above, at, and be...
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hydrofreiburg.bsky.social @hydrofreiburg.bsky.social · 12/03/2025
Contrary to the traditional view that terrain effects are purely local, our findings reveal that features like plateaus and canyons drive water redistribution on a continental scale. #Hydrology #ClimateScience #Research
media.tenor.com
a man in a suit and tie is dancing .
ALT: a man in a suit and tie is dancing .
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hydrofreiburg.bsky.social @hydrofreiburg.bsky.social · 12/03/2025
Ever wondered how Earth's towering mountains and deep valleys shape our water cycle? Our recent EOS article—expanding on insights from the original paper—uncovers a global link between topography and water flow. #EOS #WaterCycle #Geoscience
media.tenor.com
a view of a mountain range covered in clouds
ALT: a view of a mountain range covered in clouds
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hydrofreiburg.bsky.social @hydrofreiburg.bsky.social · 11/03/2025
The takeaway? Reducing surface sealing can boost tree water uptake and urban resilience. Rethink urban design to give our trees a fighting chance. Read more: freidok.uni-freiburg.de/data/263246
freidok.uni-freiburg.de
Ecohydrological dataset of various continuous field measurements on Norway maple (Acer platanoides) and small-leaved lime (Tilia cordata) in the city of Freiburg, Germany
Urban hydrological processes are significantly influenced by human activities, particularly the expansion of impermeable surfaces, which impact urban meteorology and hydrology. Urban trees play a cruc...
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