#defoliation

[yuwi-takimoto]

I had the pleasure of illustrating Saora (@jellySaora) via Skeb! Thank you so much for the wonderful request! This piece marks my 100th commission—what a milestone to celebrate!https://skeb.jp/@yuwi_takimoto/works/100…#Commission via @skeb_jp

[tonytomeo]

Blue Palo Verde

“Palo verde” translates to “green stick”. If “verde” translates to “green”, then what color is blue palo verde, Parkinsonia florida? It is simply a bit more bluish green than other species that are a bit more yellowish. Its bark contains chlorophyll to photosynthesize without foliage. Blue palo verde is deciduous so defoliates for winter. Then, it defoliates in response to dryness through much��

[tomihara-design]

「落ち葉」

[whats-in-a-sentence]

The ability of ethylene gas to cause defoliation in birch trees is shown in Figure 22.23.

"Plant Physiology and Development" int'l 6e - Taiz, L., Zeiger, E., Møller, I.M., Murphy, A.

[coolbugs]

Bug of the Day

Man, these dusky birch sawflies (Nematus latitarsus) were going to town on the birch in the field we were in. Larval aggregations are impressive defoliators :-)

[huariqueje]

Gentleman with flower - Carel Willink  , 1926.

Dutch, 1900-1983

Oil on canvas , 67.5 x 37.8 cm.

[onenicebugperday]

do you know who this friend is? they were spotted in japan and I'm making this id request on the behalf of a twitter user. hopefully the photo isn't too blurry/low quality since I had to take a screenshot from the video they posted :')

The closest match I could find is an Ailanthus defoliator, Eligma narcissus. So if it's not that, I'd say it's almost certainly another moth in the same family, Nolidae.

[nocternalrandomness]

Nose art on a 1956 Fairchild C-123 Provider on display during Oshkosh 2023

[quixoticanarchy]

That the term "military chemical compound" is specifically differentiated from chemical warfare agents is a kind of fascinating rhetorical sleight of hand. "Riot control" agents, herbicides, respiratory irritants, incendiaries, and smoke materials including even white phosphorus can be considered "military chemical compounds" and not chemical weapons*. You can do an awful lot of damage with defoliants and certainly white phosphorus or an irritant like chlorine, but you still get to say you weren't using chemical weapons since congrats, you stopped short of like. sarin. Interesting way to allow for certain permissible methods of harm, in contrast to those you (nominally) label out-of-bounds

*this is according to US classifications

[pallanophblargh]

I have so many things I need to catch up on and respond to (I have severely neglected my email which is NOT good) so I apologize. I will get around to it this week I hope! 

Old followers will know that this is the norm for me this time of year as I once again rally the strength to try and make the most of my severely neglected little urban hellscape of a yard. I mean, how do you recover from the knowledge that ALL of the native milkweed species you planted over the last 4 years has died, never to return? (I can’t stop being sad about this you have no clue, I had 5+ species native to the state!) All that remains is the common milkweed volunteers that have come up wherever they feel like it, and I’m obligated to let them do as they wish. Feels bad, man. I would have killed to see that purple milkweed flower.

Have spent the last 2+ weeks getting my veggie garden and containers up and running (still need to sow beans and more kale) and I’ve got more natives/ornamentals to go into my nearly cleared side yard. I’m really really REALLY hoping my new virginia bluebells don’t die with this heat/likely drought, but I’m pretty confident everyone else will come through okay. I mean, if the cardinal flower can come back for the 3rd year like a champ, what’s their excuse? (Dear self: be thankful, the cardinal flower likes you and you know it shouldn’t and that’s rad. Also the prairie smoke plant is starting to spread and that’s really cool. So is the hepatica. And your ferns are getting big and beautiful! So remember what’s working out, ok?)

I just want my little plot to be the hopping hot spot for all the local wildlife. It’s nice to see so many critters anywhere I look but I know I can do better and that requires A LOT of work. I’ll never be anything akin to a master gardener, but I like to think I’m learning a lot every day and working WITH nature instead of against it. Battling invasives is one hell of task. (Rot in hell, creeping bellflower!)

Now if only it would rain, and I can find a way to get a rain barrel setup! (No gutters in my back yard to access for rain is a major L...)

[tombstonesandcollarbones]

Incredibly convenient that my migraine prodrome sometimes mimicks allergy symptoms. Totally fun and not confusing at all.

[mr-legoman]

Ya’know I have a new appreciation for Zero Escape

After playing some Escape Room visual novels, I really appreciate Zero Escape’s puzzles and its feedback. Like it has a few puzzles that are brain busters or can be confusing but it does offer feedback. If you fail a puzzle or do something wrong the characters will say something.

Characters can also help and point you in the right direction. Its something I never really thought about. And it also has character interactions which just develops the characters better. Some of the indie games I play lack that feedback on certain puzzles making it more frustrating.

[tonytomeo]

Falling Leaves Are Getting Messy

Deciduous foliage gets messy through autumn. The primary problem with autumn foliar color is that it eventually becomes quite a mess. Premature shedding started the process even before much of the foliar color developed. Evergreen foliage can contribute to the mess, but most debris now is deciduous. Autumn is, obviously, its season for defoliation. Falling leaves merely do what is natural for…

[tomihara-design]

「落ち葉」

[reasonsforhope]

Ancient redwoods recover from fire by sprouting 1000-year-old buds

Article | Paywall free

When lightning ignited fires around California’s Big Basin Redwoods State Park north of Santa Cruz in August 2020, the blaze spread quickly. Redwoods naturally resist burning, but this time flames shot through the canopies of 100-meter-tall trees, incinerating the needles. “It was shocking,” says Drew Peltier, a tree ecophysiologist at Northern Arizona University. “It really seemed like most of the trees were going to die.”

Yet many of them lived. In a paper published yesterday in Nature Plants, Peltier and his colleagues help explain why: The charred survivors, despite being defoliated [aka losing all their needles], mobilized long-held energy reserves—sugars that had been made from sunlight decades earlier—and poured them into buds that had been lying dormant under the bark for centuries.

“This is one of those papers that challenges our previous knowledge on tree growth,” says Adrian Rocha, an ecosystem ecologist at the University of Notre Dame. “It is amazing to learn that carbon taken up decades ago can be used to sustain its growth into the future.” The findings suggest redwoods have the tools to cope with catastrophic fires driven by climate change, Rocha says. Still, it’s unclear whether the trees could withstand the regular infernos that might occur under a warmer climate regime.

Mild fires strike coastal redwood forests about every decade. The giant trees resist burning thanks to the bark, up to about 30 centimeters thick at the base, which contains tannic acids that retard flames. Their branches and needles are normally beyond the reach of flames that consume vegetation on the ground. But the fire in 2020 was so intense that even the uppermost branches of many trees burned and their ability to photosynthesize went up in smoke along with their pine needles.

Trees photosynthesize to create sugars and other carbohydrates, which provide the energy they need to grow and repair tissue. Trees do store some of this energy, which they can call on during a drought or after a fire. Still, scientists weren’t sure these reserves would prove enough for the burned trees of Big Basin.

Visiting the forest a few months after the fire, Peltier and his colleagues found fresh growth emerging from blackened trunks. They knew that shorter lived trees can store sugars for several years. Because redwoods can live for more than 2000 years, the researchers wondered whether the trees were drawing on much older energy reserves to grow the sprouts.

Average age is only part of the story. The mix of carbohydrates also contained some carbon that was much older. The way trees store their sugar is like refueling a car, Peltier says. Most of the gasoline was added recently, but the tank never runs completely dry and so a few molecules from the very first fill-up remain. Based on the age and mass of the trees and their normal rate of photosynthesis, Peltier calculated that the redwoods were calling on carbohydrates photosynthesized nearly 6 decades ago—several hundred kilograms’ worth—to help the sprouts grow. “They allow these trees to be really fire-resilient because they have this big pool of old reserves to draw on,” Peltier says.

It's not just the energy reserves that are old. The sprouts were emerging from buds that began forming centuries ago. Redwoods and other tree species create budlike tissue that remains under the bark. Scientists can trace the paths of these buds, like a worm burrowing outward. In samples taken from a large redwood that had fallen after the fire, Peltier and colleagues found that many of the buds, some of which had sprouted, extended back as much as 1000 years. “That was really surprising for me,” Peltier says. “As far as I know, these are the oldest ones that have been documented.”

... “The fact that the reserves used are so old indicates that they took a long time to build up,” says Susan Trumbore, a radiocarbon expert at the Max Planck Institute for Biogeochemistry. “Redwoods are majestic organisms. One cannot help rooting for those resprouts to keep them alive in decades to come.”

-via Science, December 1, 2023

[nando161mando]

"Operation Ranch Hand, a tragic chapter in history, remembered today. Spraying millions of gallons of defoliants during the Vietnam War led to devastating health consequences for Vietnamese population. Let's reflect on the lasting impact and work towards a future of peace and understanding. 🕊️ #OperationRanchHand #AgentOrange"

https://bird.makeup/users/theintlmagz/statuses/1689692230687334400