Ravi Ranjan
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raviranjan.bsky.social
Ravi Ranjan
@raviranjan.bsky.social
770 followers 430 following 10 posts
Postdoc at UT Austin | Theoretical ecology, physiology and community ecology, British TV & huskies. Not necessarily in that order. Views my own.
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Reposted by Ravi Ranjan
mridulkthomas.bsky.social
Our experimental design workshop had ~40 participants from >15 countries!

@raviranjan.bsky.social and I focused on refining ideas, estimating parameters precisely, leverage in linear & nonlinear regression, and using simulations to compare designs.

Presentation & R scripts in next post:
Limnoseries: How to Design Better Experiments
YouTube video by GLEONetwork
www.youtube.com
October 15, 2025 at 9:50 AM
Reposted by Ravi Ranjan
bachlennart.bsky.social
1/n
This study led by @aaronferderer.bsky.social tested how 5 diatom species respond to broad ranges of seawater carbonate conditions. Goal was to determine carbonate chemistry niches and to inform Ocean Alkalinity Enhancement (OAE) and Ocean Acidification (OA)

🌊

www.science.org/doi/10.1126/...
Carbonate chemistry fitness landscapes inform diatom resilience to future perturbations
Diatom growth rates are determined by concentrations of CO2 and H+ across broad carbonate chemistry landscapes.
www.science.org
September 19, 2025 at 1:10 AM
Reposted by Ravi Ranjan
padpadpadpad.bsky.social
I have an MRC-funded PhD project available (www.exeter.ac.uk/study/fundin...) on how warming will change the problem of AMR. Join a small and friendly group (padpadpadpad.netlify.app/about) in (sometimes) sunny Cornwall. 🧪🦠 #microsky

Please share the ad below with anyone who may be interested.
A teal flyer for a PhD opportunity to investigate how warming may change antimicrobial resistance. The project will use experiments on Klebsiella bacteria to answer questions about how temperature affects their response to antibiotics, plasmid transfer, and fitness costs. The research involves microbiology lab work, bioinformatics, and mathematical modeling. The flyer includes contact details for Dr. Daniel Padfield and the logos of the sponsoring institutions.
September 16, 2025 at 8:08 AM
Reposted by Ravi Ranjan
mridulkthomas.bsky.social
@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.
September 15, 2025 at 11:20 AM
Reposted by Ravi Ranjan
cfarrior.bsky.social
We find stable coexistence of Rüger's tropical tree demographic strategies (slow, fast, short-lived breeders, and long-lived pioneers) in a model with just competition for light and stochastic small-scale disturbances.

Great work, Damla Cinoğlu!
besjournals.onlinelibrary.wiley.com/doi/epdf/10....
Small disturbances and subsequent competition for light can maintain a diversity of demographic strategies in a neotropical forest: Results from model–data integration
You have to enable JavaScript in your browser's settings in order to use the eReader.
besjournals.onlinelibrary.wiley.com
July 22, 2025 at 3:01 PM
Reposted by Ravi Ranjan
biologists.bsky.social
The Company of Biologists Workshop: Why Are Cells the Size They Are?

Thank you to Workshop organisers Dustin Marshall and Craig White.

#Workshop #Biology #CellBiology #Cells #Community #Collaboration #Research #Researchers #Academia #Academics
Workshop attendees standing on the steps in front of the event venue. The individuals are dressed in casual to semi-formal attire. Image text: Why Are Cells the Size They Are? Buxted Park, East Sussex, UK 13-16 July 2025
July 16, 2025 at 11:29 AM
Reposted by Ravi Ranjan
mridulkthomas.bsky.social
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.
scor-cobs.bsky.social Changing Ocean Biological Systems working group @scor-cobs.bsky.social · Jul 15
We will be teaching two free training courses at the BECoME-2025 conference in Hong Kong next month🌊

Course 1: Designing Multiple-Driver Experiments
Course 2: Data Analysis for Multiple-Driver Experiments

Join us! Apply through the conference website:
www.become2025.com/registration
Training Course 1: Designing Multiple-Driver Experiments BECoMe-2025 and SCOR’s Changing Ocean Biological Systems infrastructure group are hosting a free training course for researchers interested in learning how to design and carry out multiple-driver (i.e., multiple stressor) experiments that measure responses in microbes, plants, or animals. This training course will guide participants in using the MEDDLE resources to: • Define a relevant research question • Identify key drivers, biological traits, and responses • Select an appropriate experimental design • Develop a statistical analysis plan Training Course Details Time &Date: 9:30 am - 4:30 pm, 18 August 2025 (Monday) Location: City University of Hong Kong Participant Limit: 24 researchers (first-come, first-served) Eligibility: Participants should have experience in designing and conducting single-driver experiments that study biotic responses (e.g. marine warming, ocean acidification). Conveners: Christina McGraw, Sam Dupont, Sinéad Collins, Mridul K. Thomas, Peter Dillingham Training Course 2: Data Analysis for Multiple-Driver Experiments Researchers work hard to conduct interesting and challenging multi-driver experiments, but are often unaware of how best to analyse their data to take maximum advantage of these experiments. In this training course, participants will: • Learn some of the common statistical challenges that appear in multi-driver experiments and how to solve them • Work through an example R vignette for a multi-driver experiment • Simulate an example dataset based on a proposed experiment • Perform an appropriate analysis and visualise and interpret its output using “literate programming” via R markdown Training Course Details Time &Date: 9:30 am - 1:00 pm, 22 August 2025 (Friday) Location: City University of Hong Kong Participant Limit: 12 researchers (first-come, first-served) Eligibility: Attendance at Training Course 1 (Designing Multiple-Driver Experiments) is required, as Training Course 2 builds directly on the concepts developed in the first training course. Participants should have experience with R and good knowledge of regression. Strong Python skills may also be considered, but Training Course 2 will be conducted using R. Conveners: Peter Dillingham, Mridul K. Thomas, Sinéad Collins, Christina McGraw
July 15, 2025 at 10:36 AM
Reposted by Ravi Ranjan
joshuasweitz.bsky.social
Get the word out far and wide. New opportunity from the Simons Foundation in the Eco-Evo space.

2026 Simons Graduate Fellowship in Ecology and Evolution Awards, due July 31, 2025, only for incoming PhD students who plan to start their PhDs in Fall 2026.

www.simonsfoundation.org/grant/simons...
Simons Graduate Fellowships in Ecology and Evolution
The purpose of these awards is to provide support for students entering U.S.-based Ph.D. programs with a plan to perform research in ecology and evolution. While we will consider all projects in ecolo...
www.simonsfoundation.org
June 2, 2025 at 4:08 PM
Reposted by Ravi Ranjan
hillebr1.bsky.social
@icbm-uol.bsky.social offers a fully funded professorship in theoretical oceanography. Join a great team of physicists, chemists, and biologists working on the marine environment. Oldenburg is a truly livable city and connected to a range of marine institutes in NW Germany

uol.de/en/job/w2-pr...
Professorship in Theoretical Physical Oceanography // University of Oldenburg
uol.de
April 3, 2025 at 5:47 PM
Reposted by Ravi Ranjan
jonaswickman.bsky.social
No more competing consumers than there are resources can coexist in equilibrium, but have you ever wondered how many consumers actually evolve as resource diversity increases? In our new paper, @chrisklausmeier.bsky.social and I investigate. (1/3)

www.sciencedirect.com/science/arti...
The effects of trade-off shape and dimensionality on eco-evolutionary dynamics in resource competition
Organisms invariably experience trade-offs in their capacities for interacting with their environments. In resource competition, this often means that…
www.sciencedirect.com
March 13, 2025 at 3:57 PM
Reposted by Ravi Ranjan
nkgarg.bsky.social
*Please repost* @sjgreenwood.bsky.social and I just launched a new personalized feed (*please pin*) that we hope will become a "must use" for #academicsky. The feed shows posts about papers filtered by *your* follower network. It's become my default Bluesky experience bsky.app/profile/pape...
March 10, 2025 at 6:14 PM
Reposted by Ravi Ranjan
nizet.bsky.social
(it’s a fig tree)
December 15, 2024 at 4:54 PM
Reposted by Ravi Ranjan
jeffreykconner.bsky.social
Kellogg Biological Station is searching for a new Director! KBS is unique in its ability to integrate lab and field research, as well as integrating fundamental research in ecology and evolution with applications to environmental problems. Questions to me or the search chairs. Please apply!
Institute/Center Director-Management - Hickory Corners, Michigan, United States
Position Summary Questions regarding this position may be directed to the Search Committee Co-Chairs, Dr. Richard Kobe (kobe@msu.edu) and Dr. Andrea Case (caseand4@msu.edu). The position will remain o...
careers.msu.edu
December 12, 2024 at 3:38 PM
Reposted by Ravi Ranjan
sprunger.bsky.social
The W.K. Kellogg Biological Station is looking for a new director!
careers.msu.edu/jobs/institu...
Institute/Center Director-Management - Hickory Corners, Michigan, United States
Position Summary Michigan State University seeks a resident Director for the W. K. Kellogg Biological Station (KBS) to provide leadership and promote a creative environment that fosters innovation and...
careers.msu.edu
December 5, 2024 at 4:54 PM
Reposted by Ravi Ranjan
elenalitchman.bsky.social
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.
Klausmeier-Litchman Lab
Welcome to the Klausmeier-Litchman lab! We study empirical and theoretical community ecology, biodiversity and climate change, focusing on phytoplankton, other microbes and general theory. We use obse...
www.kl-lab.group
November 26, 2024 at 6:48 PM
Reposted by Ravi Ranjan
cfarrior.bsky.social
UT Austin Cluster Hire: Assistant/Associate/Full Professor in Advances in Artificial Intelligence and Data Science for Environmental Systems
apply.interfolio.com/158908

Deadline: January 6, 2025
November 13, 2024 at 8:11 PM
Reposted by Ravi Ranjan
scor-cobs.bsky.social
We've written papers/guides about how to improve experimental design so that we learn more from experiments.

We also teach workshops and build tools based on these principles. 🌊

onlinelibrary.wiley.com/doi/10.1111/...

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

www.annualreviews.org/content/jour...
Experimental strategies to assess the biological ramifications of multiple drivers of global ocean change—A review
Marine life is controlled by multiple physical and chemical drivers and by diverse ecological processes. Many of these oceanic properties are being altered by climate change and other anthropogenic p...
onlinelibrary.wiley.com
November 12, 2024 at 2:30 PM
Reposted by Ravi Ranjan
mridulkthomas.bsky.social
A starter pack of people working on thermal biology or metabolic theory. Presently a very short list, but I know y'all are out there - please tell me if you'd like to be added!

(Or if you'd like to be taken off)

go.bsky.app/nHLZbD
November 13, 2024 at 6:47 PM
Reposted by Ravi Ranjan
mutualismecology.bsky.social
I don't, but Oliver Pearson created "a mechanical model for the study of population dynamics" (www.jstor.org/stable/1933324) that "resembles a metamerically elongated pinball machine." So, a scientific pinball machine, but not Waddington's . . .
"Essentially the model consists of a long inclined plane into which a large number of holes has been drilled and down which balls are permitted to roll. It resembles a metamerically elongated pinball machine (Figure 1). As long as it remains on the surface, the ball represents a living animal; when it falls through a hole it represents a dead animal. Balls that "survive" long enough are permitted to "reproduce," thereby contributing to the maintenance of the population. Numerous embellishments, however, are necessary before the model becomes rewardingly analogous to a wild population, and these will be described below."
November 8, 2024 at 5:21 PM
Reposted by Ravi Ranjan
mridulkthomas.bsky.social
Do you do multiple driver/stressor experiments? 🌊 🧪

@raviranjan.bsky.social and I wrote a paper a few months ago to help you make them even better.

annualreviews.org/content/jour... (OPEN ACCESS)

(1/n)
Designing More Informative Multiple-Driver Experiments | Annual Reviews
For decades, multiple-driver/stressor research has examined interactions among drivers that will undergo large changes in the future: temperature, pH, nutrients, oxygen, pathogens, and more. However, ...
annualreviews.org
August 20, 2024 at 8:12 AM
raviranjan.bsky.social
This is an amazing program for students applying to EEB PhD programs in the US. If you can help with the PhD app process, please consider signing up as a mentor. If you are applying for PhDs, sign up as a mentee and get some feedback on your application. Reposts are greatly appreciated too.
mutualismecology.bsky.social Chris Moore @mutualismecology.bsky.social · Aug 7
The 2024 edition of #EEBMentorMatch is now live. The program provides support to grad school applicants in the US with their applications for fellowships and grad programs. Signup forms for both mentors and mentees are here:

eebmentormatch.com
EEB Mentor Match
Connecting students with support to apply for graduate school and fellowships in Ecology and Evolutionary Biology. The 2024 edition of Mentor Match is now live! The links on this page were updated in ...
eebmentormatch.com
August 9, 2024 at 6:58 PM
Reposted by Ravi Ranjan
joelyndelima.bsky.social
Can teaching assistants help us build inclusive classrooms? Well yes! They not only consider it part of their role, but also feel confident about their abilities to do so. Short 🧵 about our new paper on work done with Siara Isaac & Helena Kovax at EPFL.
doi.org/10.1080/0304...
Teaching assistants’ contributions to creating inclusive and equitable learning spaces in engineering
Sustainable engineering education requires us to address discrimination and inequity of experience, thereby contributing to a renewal of the engineering profession that reflects a rich diversity of...
doi.org
May 3, 2024 at 8:45 AM
Reposted by Ravi Ranjan
jonaswickman.bsky.social
Delighted to announce our new paper in Science. @chrisklausmeier.bsky.social, @elenalitchman.bsky.social, and I show how power-law scaling at the micro (individual) level is translated by eco-evolutionary dynamics into power-law scaling at the macro (food-web) level. 1/5
Eco-evolutionary emergence of macroecological scaling in plankton communities
Eco-evolutionary dynamics informed by allometric scaling can predict large-scale patterns across planktonic food webs.
www.science.org
February 15, 2024 at 7:12 PM
Reposted by Ravi Ranjan
chrisklausmeier.bsky.social
We will run a weekly online seminar on resource competition theory and related ecological theories next semester (from the week of January 8 to the week of April 15, time noon-1:30PM Eastern, day TBD).
December 15, 2023 at 7:07 PM
Reposted by Ravi Ranjan
clsong.com
Below are some of the best theory papers I read this year. Each one expands on an original idea, bringing it to full fruition and addressing long-standing questions in our field.
December 14, 2023 at 8:18 PM