Mariano Koen-Alonso (He/Him)'s Avatar

Mariano Koen-Alonso (He/Him)

@mkoenalonso

Marine and fisheries scientist; interested in marine ecology, food webs, and ecosystem-based management among many other things. Posts are my own.

1,296
Followers
1,539
Following
300
Posts
13.11.2024
Joined
Posts Following

Latest posts by Mariano Koen-Alonso (He/Him) @mkoenalonso

We couldn’t afford a full electric, but the jump to a PHEV was the next best thing. Our choice is about to pay off in ways we didn’t anticipated.

I would have preferred a lower return to investment… and a world where international law meant something would have been a nice touch too…

08.03.2026 12:16 👍 1 🔁 0 💬 0 📌 0
Chart showing the exponential collapse of the lag, extrapolated to 2.0C. Reference points show 10, 20 and 30 year lag scenarios projecting 2033, 2043 and 2053 respectively.

Chart showing the exponential collapse of the lag, extrapolated to 2.0C. Reference points show 10, 20 and 30 year lag scenarios projecting 2033, 2043 and 2053 respectively.

1/🌡️ Global warming passed a milestone on 17th Nov 2023 that barely made the news

For the first time ever, the world's daily average temperature was 2.0°C above pre-industrial levels

Here's what the data says about when that becomes the annual norm, & whether it's coming sooner than anyone expects🧵

08.03.2026 10:05 👍 94 🔁 81 💬 5 📌 3
06.03.2026 09:29 👍 5 🔁 2 💬 0 📌 0
Preview
The Bay du Nord offshore oil project takes a significant step forward The offshore field could produce hundreds of millions of barrels of oil over the coming decades.

Just for completeness, this project not only overlaps with Canadian Marine Refuges. It also overlaps with closures established by the Northwest Atlantic Fisheries Organization (NAFO) to protect Vulnerable Marine Ecosystems in international waters.
👇👇
www.nationalobserver.com/2026/03/05/n...

06.03.2026 09:39 👍 0 🔁 0 💬 0 📌 0

If we could only realize how much education can do to address all the priorities that lay above…

01.03.2026 14:14 👍 1 🔁 0 💬 1 📌 0

👇👇👇👏👏👏

01.03.2026 14:03 👍 0 🔁 0 💬 1 📌 0
Preview
The end of accountability: How autonomous AI could supercharge climate disinformation While conspiracies rely on falsehoods, lies or manipulative uses of emotion, they share a key feature: they are traceable to people and institutions.

This is the stuff of nightmares, and govs enamoured by the profits & power that AI companies promise will drag their regulatory feet.

We seem to be living the birth of the worst dystopian futures that sci fi has imagined… and we don’t particularly care…

www.nationalobserver.com/2026/02/27/o...

01.03.2026 13:57 👍 0 🔁 0 💬 0 📌 0
Preview
Are Americans really doing better than Canadians? Debunking the prosperity gap GDP per person is often treated as the yardstick for a nation’s prosperity, writes Gustavo Indart, but it’s a crude one — and is misleading about how Canadians are doing

A useful perspective; and a good reminder that fixing inequality would be a much bigger win for people at large, than improving the GDP.

www.thestar.com/business/opi...

01.03.2026 13:00 👍 1 🔁 0 💬 0 📌 0
Preview
He was hired to fight for Wales's future generations. Does Canada need a job like that? | CBC News For the last three years, Derek Walker has been advocating for the rights of Wales's youngest generations — and generations still to come. As Canadian youth grapple with issues like climate change, af...

This is a great concept, but while a Commissioner may be good, it can only do so much. I would also make this a mandatory requirement for all ministerial decisions, with each minister being legally accountable to justify how this was considered in each decision.

www.cbc.ca/news/politic...

28.02.2026 13:20 👍 0 🔁 0 💬 0 📌 0

For those out there that still believe that protecting Vulnerable Marine Ecosystems (VMEs), like sponge grounds, do nothing for sustainable fisheries. Many species likely use these VMEs as spawning substrate and/or juvenile habitat; we just don’t know enough yet to understand all these connections.

26.02.2026 11:47 👍 10 🔁 2 💬 0 📌 0
Preview
Unprecedented increase in ice melt in Greenland due to climate change A study published in Nature Communications shows that water resulting from ice melting has increased six-fold in recent decades.

"Since 1990, the area affected by extreme melting episodes has increased at a rate of 2.8 million km² per decade. And the production of water from ice melt has increased six-fold"

#Greenland 🇬🇱
#ClimateEmergency

26.02.2026 02:58 👍 50 🔁 33 💬 2 📌 1
Over a century of global decline in the growth performance of marine fishes - Nature Communications Critical life-history traits, like growth and body size, can influence species’ survival. Using more than 7500 observations, this study suggests that the growth performance of marine fish has declined...

Over a century of global decline in the growth performance of marine fishes 🧪🦑🌍🐟 www.nature.com/articles/s41...

23.02.2026 21:49 👍 35 🔁 17 💬 1 📌 1
Video thumbnail

Experts at the Woods Hole Oceanographic Institution (WHOI) have rediscovered a recording and determined it’s probably the oldest whale recording still in existence. The likely vocalist? A humpback whale. 🐋 spklr.io/6007Dxy1Z

📷: BlackBox
🎙️: Luis Lamar, Woods Hole Oceanographic Institution

23.02.2026 20:49 👍 1982 🔁 489 💬 58 📌 31
Preview
Global warming must peak below 2°C to limit tipping point risks Global warming must peak below 2°C then return under 1.5°C as quickly as possible to limit the risk of dangerous “tipping points”, experts say.   The new paper, by an international team of researchers...

"...the higher the peak temperature, the more difficult it is to reverse temperature below critical levels and the longer it’s likely that we’ll remain in ‘overshoot’.” - @njsteinert.bsky.social, @cicero.oslo.no

#ClimateEmergency

24.02.2026 04:08 👍 54 🔁 29 💬 1 📌 3

You are making my point. Productive teams can exist under both working environments. Some things are still better in person (eg multisectoral trade-off negotiations), but the effectiveness of a team is a function of how the work environment is organized. The current setup is not conducive to that.

23.02.2026 16:31 👍 1 🔁 0 💬 0 📌 0

While I understand the cynicism, the narrative here is about efficiency. When the measures to be implemented demonstrably don’t achieve that, then that opens the door to challenge that narrative and ask decision-makers to come clean with the actual underlying motivations, and own the consequences.

22.02.2026 14:25 👍 1 🔁 0 💬 1 📌 0

Enjoy it!! I will likely spend the same amount of hours shovelling ourselves out 🤪😉

22.02.2026 12:35 👍 0 🔁 0 💬 0 📌 0
Post image

The press has reported on yesterday’s Supreme Court decision as if it were only about tariffs. Wrong. It’s far bigger and even more important. Let me explain. https://robertreich.substack.com/p/the-supreme-courts-tariff-decision

21.02.2026 20:01 👍 3523 🔁 1214 💬 117 📌 64

👇👇👇

22.02.2026 11:37 👍 0 🔁 0 💬 0 📌 0
Preview
Federal government says there may not be enough workstations for all workers' 4-day-a-week return | CBC News Unions representing federal workers say the Treasury Board of Canada's update only confirms what they already knew.

Home vs office is the wrong framing. If the goals are improving productivity, team interactions, & sense of purpose, then hunger gaming a random desk each day, not knowing where your team is sitting, & having to book a silence closet to take calls aren’t the way there.

www.cbc.ca/news/canada/...

22.02.2026 11:36 👍 16 🔁 4 💬 3 📌 2

Good point. Many proposed solutions for clean energy (nuclear, but also wind to hydrogen) don’t have reliable business cases when compared with plain wind & solar. The fact that are often embraced by govs is a reminder of the tug-of-war that exists between evidence & lobbies.. and who often wins..

21.02.2026 12:08 👍 1 🔁 0 💬 0 📌 0
Ten new insights in climate science 2025 | Global Sustainability | Cambridge Core Ten new insights in climate science 2025 - Volume 9

"Current levels of global temperature are consistent with a continued acceleration of global warming and suggest that surpassing the 1.5oC threshold above pre-industrial conditions is practically inevitable"

#ClimateEmergency

21.02.2026 00:10 👍 17 🔁 10 💬 0 📌 0
Preview
Global land carbon sink under strain - 10insightsclimate

"There are indications that, over the past decade, carbon transfer to the atmosphere from Northern Hemisphere ecosystems is accelerating. If so, the overall land carbon sink would be smaller than currently anticipated, which would imply an even lower remaining carbon budget"

21.02.2026 00:52 👍 18 🔁 10 💬 0 📌 1
Preview
Canada not on track to hit net-zero by 2050, or meet any climate targets: study OTTAWA - A new study published Friday by the Canadian Climate Institute says Canada is not on track to meet any of its climate targets — not the 2026 interim

Canada is taking his climate commitments as optional as opposed to existential. While there are many reasons for the recent reversals, and the current federal gov is likely a better climate option than the alternative, this is still profoundly disappointing.
👇👇👇
www.thestar.com/politics/fed...

15.02.2026 17:16 👍 1 🔁 1 💬 0 📌 0
One of the saltiest parts of the ocean is getting fresher Off the west coast of Australia, some seawater has lost nearly a third of its salty area in recent decades, as climate change-related current shifts push more

"The Southern Indian Ocean off the west coast of Australia is becoming less salty at an astonishing rate, largely due to #climate change, new research shows."

15.02.2026 02:41 👍 50 🔁 30 💬 1 📌 0

“The Mandel Files” by Peter F Hamilton. Not really Cli-Fi, but I would call it Cli-Fi adjacent, as a climate changed world is the backdrop for the story. It’s good old fun; Hamilton is one of my favourite sci-fi writers.

15.02.2026 12:16 👍 1 🔁 0 💬 0 📌 0
Post image

Could life have begun with simpler molecules than we once thought? A new paper in @science.org by @edogia.bsky.social shows that a tiny RNA catalyst can self-replicate itself, suggesting that life may have been easier to emerge than expected. Getting closer. www.biorxiv.org/content/10.1...

14.02.2026 11:52 👍 47 🔁 18 💬 1 📌 1
A four panel comic, from left to right:

1960s
LIFE IS BASED ON DNA, WHICH USES RNA TO MAKE PROTEINS THAT DO STUFF.

1980s
ALSO, THE RNA DOES SOME STUFF ITSELF, WHICH IS WEIRD.

2000s
THERE ARE 50
MANY KINDS OF RNA. IT'S DOING SO MUCH STUFF!

2020s
LIFE IS A SEETHING MASS OF RNA THAT SOMETIMES USES DNA TO TAKE NOTES.

WHAT DO THE PROTEINS DO?
ERRANDS FOR RNA.

A four panel comic, from left to right: 1960s LIFE IS BASED ON DNA, WHICH USES RNA TO MAKE PROTEINS THAT DO STUFF. 1980s ALSO, THE RNA DOES SOME STUFF ITSELF, WHICH IS WEIRD. 2000s THERE ARE 50 MANY KINDS OF RNA. IT'S DOING SO MUCH STUFF! 2020s LIFE IS A SEETHING MASS OF RNA THAT SOMETIMES USES DNA TO TAKE NOTES. WHAT DO THE PROTEINS DO? ERRANDS FOR RNA.

It’s an RNA world. RNA is posited to be the first genetic material, arising 4 billion years ago. It can store information and act as an enzyme. Eventually, it duplicated its information into a more stable form, DNA.

13.02.2026 14:17 👍 1592 🔁 282 💬 44 📌 21

For 50 years, the median wage of hourly workers stagnated or declined while the stock market and CEO pay skyrocketed.

Is it any wonder why so many feel abandoned by the system? People lose faith, and a demagogue fills the void.

This is why we must fix the system. AOC is right.

13.02.2026 19:49 👍 6516 🔁 1814 💬 147 📌 59

This really made me burst into laughter 🤣🤣🤣

14.02.2026 11:45 👍 0 🔁 0 💬 0 📌 0