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Mark Ranger

@markr4nger.bsky.social
141 followers 203 following 46 posts

Environmental journalist and outdoor guide. Currently based in Greater Yellowstone. markdegraff.com

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Mark Ranger @markr4nger.bsky.social · 11/12/2025
Wolves saved Yellowstone’s aspens… right? Turns out the real story isn’t so simple. Read it here. 🧪🌿🌎
mountainjournal.org
Have Wolves Saved Yellowstone’s Aspens? - Mountain Journal
Claims that wolves have rescued Yellowstone National Park aspen trees through a ‘trophic cascade’ oversimplify a complex story
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Mark Ranger @markr4nger.bsky.social · 29/10/2025
I looked at the #grokipedia articles about five major environmental topics: coral reefs, sea ice, Amazon rainforest, wildfire, glacier. The five articles mentioned the phrases climate change/global warming a total of 4 times. They said alarm/alarmism/alarmist 12 times. 🧪🌿🌎
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Mark Ranger @markr4nger.bsky.social · 29/10/2025
The #grokipedia on coral reefs mentions "global warming" and "climate change" zero times. It also emphasizes reefs' resilience to "thermal stress." 🧪🌎🦑
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Mark Ranger @markr4nger.bsky.social · 22/09/2025
We can protect California's forests from megafires. Last month, I visited part of the Sierra Nevada that burned in 2021. In unmanaged areas, most trees died. But where land managers had thinned trees and conducted prescribed burns, nearly every tree survived. These photos show the difference.🧪🌿🌎
A ponderosa pine stand in Plumas National Forest that was killed by the 2021 Dixie Fire. This stand of trees was unmanaged during previous decades.A ponderosa pine stand in Plumas National Forest that was killed by the 2021 Dixie Fire. This stand of trees was unmanaged during previous decades.A healthy stand of ponderosa pines in Plumas National Forest that survived the Dixie Fire. This area received thinning and a prescribed burn between 2003 and 2005.A healthy stand of ponderosa pines in Plumas National Forest that survived the Dixie Fire. This area received thinning and a prescribed burn between 2003 and 2005.
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Mark Ranger @markr4nger.bsky.social · 15/09/2025
Oak‑savanna birds thrive after fire, a new study found. Dozens of species preferred areas that burned in the 2018 Mendocino Complex Fire over unburned areas. So far, these ecosystems are proving resilient to increasingly severe wildfires, the authors concluded. 🧪🌿🌎
kneedeeptimes.org
Mendocino County’s Burned Oak Savannas Attract Birds – KneeDeep Times
A new study has found that birds are thriving in the nutrient rich oak savannas that burned in the 2018 Mendocino Complex Fire.
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Mark Ranger @markr4nger.bsky.social · 03/09/2025
‪This was a fun story to write. Last year, environmental police in Brazil stumbled upon thousands of climbing bumblebee catfish. Scientists know almost nothing about this species, which only became known to science in 2017. 🧪🌿🌎
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Mark Ranger @markr4nger.bsky.social · 13/08/2025
Botanical surveys of more than 2,000 European cemeteries found that they support at least 65 native orchid species. Graveyards might be the last best plant habitat around cities, the study authors said. 🧪🌿🌎 nautil.us/orchids-thri...
nautil.us
Orchids Thrive Among the Dead
Cemeteries are a gravely overlooked habitat for wild orchids in Europe
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Mark Ranger @markr4nger.bsky.social · 10/08/2025
There are so many fascinating studies you can find while looking through recent issues of scientific journals. Here is an article I wrote about a study that used high-speed videos of volcanic eruptions to determine the shapes of the projectiles they shoot. 🧪
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Mark Ranger @markr4nger.bsky.social · 06/08/2025
Burning coal and smelting metals vaporizes small amounts of iron. Some of the iron produced by East Asian industry has been wafting into the North Pacific, where it supercharges an algal bloom. 🧪🦑
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Mark Ranger @markr4nger.bsky.social · 04/08/2025
In 1988, wildfires razed one-third of Yellowstone National Park. While most park woodlands are regenerating, some have turned into meadows. A new study digs into why. 🧪🌿🌎
mountainjournal.org
Yellowstone’s 1988 Fires Eviscerated Forests. Will They Ever Recover? - Mountain Journal
While most park woodlands are regenerating, some have turned into meadows. A new study digs into why.
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Mark Ranger @markr4nger.bsky.social · 16/02/2025
Whether it’s ice cream, a greasy hamburger, or a heap of french fries, everybody loves fatty foods. For coyotes, that meal is a blubbery seal pup, according to a new study led by UC Santa Cruz scientists. 🧪🌎🦑 They published the first known videos of California coyotes hunting harbor seals.
news.ucsc.edu
New study documents California coyotes eating harbor seal pups
A paper published on February 12 in the journal Ecology details how the researchers used motion-triggered cameras placed at MacKerricher State Beach on California's North Coast during harbor seal pupp...
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Mark Ranger @markr4nger.bsky.social · 19/01/2025
Happy #salmonsunday!! 🦑🌎🐟 The Santa Cruz Mountains are home to the world’s southernmost coho salmon runs. Although this population of fish is critically endangered, scientists are finding that they were relatively unaffected by a major wildfire.
kneedeeptimes.org
Wild Coho Salmon Are Surviving Four Years After CZU Fire
At the southern end of their range, coho salmon in Scott Creek are adapting to wildfire and warming.
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Mark Ranger @markr4nger.bsky.social · 11/01/2025
Happy #saltmarshsaturday!! 🌎🦑 Salt marshes are powerful tools in the fight against climate change because they trap more carbon than nearly any other ecosystem. In this story, I wrote about the scientists who are measuring how much carbon is stuck in the muck of a northern California salt marsh.
mercurynews.com
Stuck in the muck: Scientists study carbon trapped by Elkhorn Slough
Salt marshes, which have historically been drained and turned into farms or land ripe for real estate development, are emerging as a powerful tool in the fight against global warming.
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Mark Ranger @markr4nger.bsky.social · 08/01/2025
Walking through a coastal northern California forest that burned a little over 4 years ago. Toyon (Heteromeles arbutifolia), madrone (Arbutus menziesii) and manzanita (Arctostaphylos spp) are THIRVING. 🌎🌿🔥
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Mark Ranger @markr4nger.bsky.social · 07/01/2025
Young trees and saplings are choking out many forests in the western United States after 150 years of grazing and fire supression. I really enjoyed reporting on this Navajo-led project to reverse these changes. 🌎
news.mongabay.com
Students and scientists collaborate to maintain Navajo Nation forests
Surviving desert heat, alpine cold, and meager rainfall each year, two-needle pinyon pines (Pinus edulis) are the backbone of many forests in the southwestern United States. Their stout branches offer...
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Mark Ranger @markr4nger.bsky.social · 03/01/2025
Got to watch a prescribed burn for a story I’m writing about using fire to revive prairies. The most incredible thing about it was that the actual burning only lasted about 15 minutes. Fire moves fast through dried grass. #photography #nature 🌎
Firefighters spread flames across a grassland during a prescribed burn.
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Mark Ranger @markr4nger.bsky.social · 02/01/2025
Anyone here give a hoot about owls? 🦉🌎 If you do, I recommend burrowing into this story about burrowing owls. They are a candidate for endangered species protection in California, and scientists are working to protect one of the last populations in the Bay Area.
mercurynews.com
How a surprising San Jose spot became a last refuge for the Bay Area’s burrowing owl population
Sandwiched between office buildings and the sewage plant, a 200-acre slice of land is home to some of the last burrowing owls in the Bay Area.
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Mark Ranger @markr4nger.bsky.social · 26/12/2024
Blub 🐟🫧 Blub 🐟🫧 Blu…efin tuna are swimming toward recovery! Down to just 2% of historic levels in 2014, international cooperation is now reeling them back from extinction—and faster than expected. 🦑
mercurynews.com
Pacific bluefin tuna are swimming toward sustainability
The aquarium’s Seafood Watch upgraded some bluefin caught off the coast of California and Mexico from red (avoid) to yellow (good alternative).
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Mark Ranger @markr4nger.bsky.social · 24/12/2024
Sperm whales abound off the coast of California, according to scientists at the Monterey Bay Aquarium Research Institute. They found these elusive creatures not with their eyes, but with their ears. 🦑 www.mercurynews.com/2024/10/21/a...
mercurynews.com
A (sperm) whale of a discovery in Monterey Bay
“We actually found that these animals are here quite a bit more often than we had realized,” says Will Oestreich, a researcher from MBARI and the lead author of a study published last month in Move…
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