Jarrett Byrnes

@jebyrnes

marine ecologist, online bon vivant, dad, ❤️ teaching #datasci & #rstats, #BlackLivesMatter @jebyrnes in other places

1,194 Following6,969 Followers8,310 Posts

YouTube YouTube Bluesky

Is this your profile?Claim it and jebyrnes.dirty.social is yours.Claim profile

Jarrett Byrnes@jebyrnes· 16d

I'm feeling this lately.

Cyathochrimis obliquidens - Rock and Leaf Scraper. A line drawing of a fish with a big open staring in horror eye but with a mild gaping mouth ready to try and suck the marrow out of life on even the hardest rock.

Jarrett Byrnes@jebyrnes· Jul 15

In the field this morning.

A dark orange sun due to wildfires over Cathleen Stone Island reflecting in the waters of Boston Harbor next to a seawall on Columbia Point at UMass Boston.

Jarrett Byrnes@jebyrnes· Jun 27

I have a new house guest on my back fence apparently?

Jarrett Byrnes@jebyrnes· Jun 27

Which to read first…

The new Bayesian Workflow book and Ken Bollen’d new SEM book!

Jarrett Byrnes@jebyrnes· Jun 24

A little #statistics timeline cleanse

An adorable grey cat with a cute soft white belly asleep in front of a poster saying “greetings from statistics”

Jarrett Byrnes@jebyrnes· Jun 16

I mean, look! You can even see how it uplifts the intertidal! Compare the seawall and its level of algae and barnacles to the panel next to it!

A seawall with panels attached to it. On the panels, the algae line and barnacle line are a good 1/3 of a meter above that on the regular seawall.

Jarrett Byrnes@jebyrnes· Jun 16

Just incredible explosive growth on the @stonelivinglab.bsky.social @livingseawalls.bsky.social after a year and a half. This is our Seaport site, and it's turning into a full lush intertidal. Looking more like Plymouth - and can't wait to see what @louisefirth.bsky.social sees in Cork!

A stand back shot of the entire 6 panels of the living seawall. The lower zone is covered in greens, then perennial browns in the mid, and finally barnacles and browns in the upper zone.

Just brown and green algae covering a panel full of crevices.

A canopy of Fucus over - well, I don't even know what treatment panel this is!

Jarrett Byrnes@jebyrnes· Jun 12

You know you’re with a bunch of ecologists when you are hiking through a beautiful mountaintop and suddenly everyone freaks out and gathers around to look at a beetle. Followed by some serious oohing and aaahing over lichen.

A group of ecologists going to the overlook.

Jarrett Byrnes@jebyrnes· May 13

Lab past and present! A strong UMB-CSUMB connection.

Me with my former postdoc, now prof at CSUMB and two of her former students - one of whom is a tech and one a PhD student in my lab.

Jarrett Byrnes@jebyrnes· May 13

When a crab gets a bit of squid on one of our BRUVs, it's tenacious. Fly free, little guy! SOUND ON! @stonelivinglab.bsky.social @umassboston.bsky.social #LivingItsBestLife 🌊🧪🌍

Jarrett Byrnes@jebyrnes· May 12

Excited to see a new sign on the Boston Harborwalk by @umassboston.bsky.social with illustrations from Melba Torres Sosa boshw.us/sign/below-t...

Jarrett Byrnes@jebyrnes· Apr 23

First, the obvious: panels as x, covers as y, facet by tide height. Meh. But, panels as facets, height as y, and cover as x... oh! But then, what if we had stacked boxes with a scale bar (trying to make this better)- the patterns are now so clear! Love it! See alt text more! #ggplot2 #dataviz

The classic - eh. Hard to learn from this.

Flipping things around - patterns emerge for how different treatments matter!

Using rectangles for means and CIs - you can REALLy see both zonation and how it differs by panel type.

Jarrett Byrnes@jebyrnes· Apr 20

They are the best.

Jarrett Byrnes@jebyrnes· Apr 7

YAY! Excited to read @chanda.blacksky.app's new book!!! And always love getting notes like this from @portersqbooks.bsky.social

Jarrett Byrnes@jebyrnes· Mar 20

Jarrett Byrnes@jebyrnes· Mar 5

Also, academic family shot! With President in for bonus!! #bem2026 @benthicsmeeting.bsky.social

The Byrnes and Hensel labs with a few guest stars.

Jarrett Byrnes@jebyrnes· Mar 5

And a huge huge YUGE shout out to Chris Patrick and the VIMS crew for putting together a fabulous meeting. Thank you! You created an incredible space for us all to connect, reconnect, flourish, and have some new opportunities pop up on the horizon. #bem2026

Jarrett Byrnes@jebyrnes· Mar 5

Just a fabulous @benthicsmeeting.bsky.social this year. And I got to meet my first PhD student’s lab, so I guess I’m officially an academic grandpa now? Life moves pretty fast… Next year in Boston! #bem2026 #bem2027

Me and Marc Hensel cheesing it up as always.

Jarrett Byrnes@jebyrnes· Mar 1

Pepper the cat looking very sweet and soulful. Until you notice he is on top of sister kinda crushing her.

Jarrett Byrnes@jebyrnes· Feb 24

One thing that will really help folk is in the supplement - what is a causal assumption and what is the difference between a statistical assumption and a causal assumption. static-content.springer.com/esm/art%3A10... #causalinference 🌍🧪 There's also a ton more in the supplement that is useful!

Common statistical and causal assumptions used for valid causal inference from data.

Text from the supplement re: causal v. statistical assumptions

Jarrett Byrnes@jebyrnes· Feb 24

So, y'all have heard me going on about #causalinference in #ecology a lot. Now our big synthetic guide "Best practices for moving from correlation to causation in ecological research" is out! Led by Hannah Correia & Paul Ferraro, it's a great walk-through for all! 🌍🧪 www.nature.com/articles/s41...

The workflow illustrates a step-by-step process for conducting causal analyses. Arrows indicate the typical flow of an analysis. Two possible pathways are shown: causal discovery approaches (blue), which aim to identify the existence of causal relationships when pre-existing knowledge is low, and causal inference approaches (yellow), which aim to quantify the direction and magnitude of causal effects when pre-existing knowledge is high. The gray feedback loop on the right highlights the iterative refinement of causal analyses based on assessments of the plausibility of causal assumptions.

Jarrett Byrnes@jebyrnes· Jan 21

Kiddo’s first randomized controlled blocked design. Gotta start ‘em right.

A cute kiddo standing with a plant experiment. There are four blocks in the table, with each block having one replicate of three treatments. Blocks are labeled and ivy pots are labeled with treatment and pot number with labels varying by color matching treatment. Treatments are randomized within blocks. Heck yeah. She’s doing it right for the science fair!

Jarrett Byrnes@jebyrnes· Dec 28

Cutie!!!

A blue land crab on a small stone bridge after a storm.

Jarrett Byrnes@jebyrnes· Dec 14

Chag sameach from our plague house to youre! Ok, hopefully yours is not also a plague house.

Our three menorahs lit for the first night!

Jarrett Byrnes@jebyrnes· Nov 30

Just perfection.

podokesaurus running with a cup
Of joe from dunks on a flag that says Massachusetts.

Jarrett Byrnes@jebyrnes· Nov 20

Pearl also liked it, but didn't pass out for half an hour.

Jarrett Byrnes@jebyrnes· Nov 20

New cat is into zoom meeting naps. Oh, Mr. Pepper....

Jarrett Byrnes@jebyrnes· Nov 6

This morning! See @breckmccollum.bsky.social talk subtidal rock wall ecology as she defends her PhD! Zoom link in image!

Jarrett Byrnes@jebyrnes· Nov 1

This is Halloween!

Jarrett Byrnes@jebyrnes· Oct 27

We're hiring a climate scientist here at @umassboston.bsky.social in the School for the Environment! employmentopportunities.umb.edu/boston/en-us... - more on the call in the image and its alt text. COME JOIN US! #climatescience