Dr. Merritt Turetsky Profile picture
Sep 24, 2020 12 tweets 6 min read Read on X
Stay tuned for my top 10 facts about #BadAssBogs! Bogs are weird, logistically challenging & sometimes smelly. But they have fascinating plants, are an archeology & paleoecology resource, & are one of the most efficient stockpiles of carbon in the biosphere. What's not to ♥️? ImageImage
BogFact 1: Did you know that bogs breathe? The bog surface shrinks & expands as the water table moves up & down. This is a great example of the ecohydrology that makes bogs so unique. The traits of bog plants & soil reinforce the bog sponge -it's adaptive! link.springer.com/article/10.100…
BogFact 2: Bogs are actually quite rare. These are ombrotrophic systems. Ombros=rain; trophic=fed. Scientists gravitate towards bogs because they are closed systems and relative easy to study. But in 🇨🇦 bogs are <10% of peatland cover. Fens (surface & ground water fed) rule! Fens rule the landscape nea...
Brief interlude so I can give a guest lecture on peatlands in a biogeochemistry course at @CUBoulder @CUBoulderENVS. But my fun fact tour of bogs will continue in short order.
BogFact 3: A @CUBoulder class just called me the Lorax of nonvascular plants so lets feature bog plants! Bogs range in tree cover but they commonly have a carpet of Sphagnum moss. Sphagnum thrive in low nutrients but also lower the pH by releasing protons. Cute killer Sphagnum! Image
BogFact 4: Bogs and peatlands more generally have a 2 gas problem. As sinks of CO2, bogs store ~1/3 of the world's soil C in <5% of the land area. A small area that packs a carbon punch. But bogs also can be sources of CH4. Over the Holocene, bogs have led to global cooling.
BogFact 5: I learned that bodies like the Tolland Man were criminals dumped into the bog. But archaeologists think that bogs were considered resources & supernatural portals. "Among prehistoric people, when you take things you also offer valuable things"
nationalgeographic.com/news/2014/7/14…
BogFact 6: Bogs and permafrost have a special relationship. In the far north, permafrost is found everywhere but in the subarctic & boreal, permafrost is found mainly in bogs! Peat is a thick insulating blanket. Learn more about our research here. theconversation.com/we-mapped-the-…
BogFact 7: Important question - could Artax really succumb to the swamp of sadness? I've had some rough field days, but unless a bog is disturbed it would be rare for an animal or person to sink into peat. But once my hip wader got so stuck in peat that I had to leave it behind.
BogFact 8: Also critical - do fire swamps like in the Princess Bride really exist? In bogs, we often smell H2S, which is produced by microbes in saturated soils. Methane also is produced in these conditions & is flammable, but luckily we don't need to dodge between🔥(or ROUSes)
BogFact 9: In their natural state, bogs are 🔥 resistant. This makes them the most efficient protectors of C in the biosphere, better than trees or biofuels. But, once drained, peatlands can burn deeply. Protecting bogs and rewetting drained bogs is a win for our climate future. ImageImage
BogFact 10: In a difficult world, we need bogs. Bogs are eerie systems that appeal to the curious, the scientific, the artistic, those who care about our past, & those who care about our future. No matter who you are, I could bring you into a bog & fill you with wonder. Image

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More from @queenofpeat

Sep 23, 2023
There is a ton of misinformation in my replies so here is a primer on permafrost carbon. Permafrost stores a HUGE amount of carbon because ancient life took up CO2, built biomass, then died. That organic matter (~50% C) slowly accrued in Earth's best freezer for 1000s of yrs. 1/ Photograph of a man wearing a baseball hat and a blue t shirt with overalls holding up a permafrost core while kneeling on the ground in a forest.
When frozen organic matter in permafrost warms, microbial activity speeds up. Microbes use the organic matter in their respiratory processes, which can release a variety of GHGs as byproducts, mostly CO2 but also methane, which make their way to the atmosphere. 2/ Image of a permafrost peat core with brown markings denoting ancient vegetation patterns.
Good: Not all permafrost carbon is vulnerable to this microbial processing, & hopefully not all permafrost will thaw.
Bad: A lot of permafrost is thawing and will thaw.
Ugly: Permafrost thaw will release enough CO2 and CH4 that it will join the world stage of major emitters. 3/
Read 5 tweets
Jun 16, 2023
Fire Facts from a Boreal 🔥 Ecologist to help you understand what is really going on in Canada.

Fire Fact 1: The term “forest fire” is misleading in boreal regions. Also burning are peatlands and permafrost ecosystems, which store LOTS of ancient carbon. 1/
Fire Fact 2: We tend to picture crown fires, with flames leaping up into tall trees. However, the majority of what burns and fuels boreal fires is ON THE GROUND. More than 80% of what burns and emits greenhouse gas is moss, peat, and litter. 2/ Photograph of red Sphagnum ...
Fire Fact 3: 🔥 connects the world in complex ways. Smoke is transported globally and affects lung health for millions. Smoke and soot travel to the Arctic, speeding up ice melt. Arctic melt created the conditions for extreme burning in 🇨🇦 and widespread smoke plumes. Wow. 3/
Read 10 tweets
Dec 21, 2022
False narratives about the #Arctic & #permafrost are being driven by the media. Here are some facts from science. 1) permafrost underlies 1/4 of N hemisphere land and 1/2 of Canada. Frozen ground is a backbone for ecosystems and infrastructure. 1/ fediscience.org/@queenofpeat/1…
Fact 2: It’s false to say thaw is unprecedented as it has happened in the past. However, rates of thaw are getting faster w/ warming, and because of climate change some permafrost will never return. Here is a video of me realizing ancient permafrost in Alaska is gone forever. 2/
Fact 3: Thawing permafrost is not why atmospheric methane (CH4) has increased so quickly in recent years. For now, permafrost thaw is a CO2 story, not a methane or nitrous oxide story. Hey climate reporters - Let’s keep our eye on the true story which deserves attention. 3/
Read 6 tweets
Jan 5, 2022
I am seeing and receiving pushback for being a climate scientist speaking out about the #MarshallFire. I understand this perspective. 1) It's difficult to attribute the #ClimateCrisis to any single event, and 2) this event was extremely complex. But hear me out. 1/
1) The #MarshallFire was either a reminder or a wakeup call that whether you live up the canyon (like I do) or on the plains, 🔥 is an ongoing threat.
2) Climate-fire relationships are complex, but due to the #ClimateCrisis, we need to learn to live with 🔥 more than ever. 2/
Hurricane force winds & human development were important factors in the #MarshallFire. But fuel configuration and moisture, and invasive species also important. Fuels include natural & human-derived.

One thing is clear to me. We all need to unite under the same umbrella. 3/
Read 4 tweets
Dec 31, 2021
~30,000 people fled the #MarshallFire, one of the most terrifying experiences we can face. Today I am reflecting on the added anxiety and consequences of fleeing a #climatemergency disaster during the COVID pandemic. Here I'll share a personal story w/ a tiny bit of insight. 1/
Just outside Boulder, circa January 2021

Normally I love the sound of wind in the trees. But the winds were howling that day. It was difficult to ignore. The house was groaning, shifting. We were in full lockdown due to COVID-19. I was trying to stay busy. 2/
My children were playing outside. Mommy I smell smoke...

At first I didn't smell anything. It was a red flag day. Everyone needed to be careful. But then I smelled it and we saw flames down the road. That is our only way out. What happened next was a blur. 3/
Read 7 tweets
Dec 22, 2021
Permafrost stores 2x the amount of carbon in the atmosphere yet is not considered by many climate models. Are we totally screwed??? Here I will explain what we know and why I promote #ClimateActionNow but not panic. 1/ Schematic of global carbon pools showing that permafrost sto
The Arctic (and its permafrost soils) is not a missing black box in any climate model, which all include Arctic soils. Until we explicitly include permafrost in these models, it is difficult to know what climate feedbacks we are missing. Likely to be in the middle. 2/ Image of a permafrost core laying on the ground of a black s
I research abrupt permafrost thaw, known to be a large source of methane. NO large scale models address abrupt thaw, yet. Ouch. Still, some portion of abrupt thaw fluxes are included in current modeling. What's the potential for overlap? More than zero, but we don't know. 3/ Photograph of a thermokarst bog, an example of abrupt permaf
Read 7 tweets

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