The Brief

Last week, General Sherman, California's most famous giant sequoia, got a checkup.

Climbers from the Ancient Forest Society scaled the tree looking for signs of a sequoia bark beetle infestation — entrance holes where adults had burrowed into the branches and laid their eggs; exit holes, where larvae chewed their way out; globules of pitch, indicating the tree was putting up a fight, trying to push the beetles out.

And, simply, whether Sherman's canopy looked healthy.

The beetles can kill a tree within a year, starting at the top and working their way down over several generations. Feeding on the cambium, they can interrupt the tree's ability to distribute water and nutrients.

A climber with the Ancient Forest Society examines General Sherman, the largest giant sequoia by volume.

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Larissa Perez

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National Park Service

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“There’s an attempted entry hole here and here," said Wendy Baxter, a forest canopy ecologist with the organization, which provided a video of the effort.

Holes in a giant sequoia created by bark beetles.

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Wendy Baxter

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Ancient Forest Society

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“This one may have gotten a little bit of a pitch response here," she said.

“It doesn’t look like the beetles have gotten much beyond the bark."

Drops of pitch pushed out by a giant sequoia trying to defend itself from beetle attacks.

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Wendy Baxter

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Ancient Forest Society

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The good news is that while the team found entry holes, they didn't see any evidence of an active attack. The beetles had either abandoned the effort or Sherman had shoved them out with its pitch.

For now, the world's largest tree (by volume), is safe. But an increasing number of deadly Sequoia bark beetle infestations have left scientists rushing to figure out why this is happening, the extent of the damage and potential treatments to prevent the deaths of some of California's most beloved trees.

The thick bark of a giant sequoia high in the Sierra Nevada has partially peeled away, revealing its insides.

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Jacob Margolis

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LAist

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A new-ish threat

While these native beetles have been known since the early 19th century, it wasn't clear they were capable of killing large sequoias.

"It was sort of like, 'oh neat, here's an insect that feeds on fallen sequoia branches, but we don't need to be worried about it,'" said Christy Brigham, chief of resources management and science at Sequoia and Kings Canyon National Parks.

"But during the 2012–2016 drought we detected large sequoia trees dying in this new way from the top down. And when we climbed those trees we found green branches that were completely infested with these beetles."

A closeup of a female Sequoia bark beetle.

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Joshua Dunlap

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Oregon Department of Agriculture

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So far, they've found 40 trees that've been killed by beetle attacks. Not nearly as catastrophic as the damage that wildfires have done, but given how fast the trees are dying, and that there are entire groves of trees that've not yet been inspected, there are reasons to be concerned.

Out of the 105 trees that the Ancient Forest Society has climbed, about 75% showed some evidence of attacks, according to Anthony Ambrose, the organizations executive director. That doesn't mean each of those trees is doomed, and it's unclear how each will hold up, all it means is that beetles appear to be widely present in ways that they weren't before.

Over the next two years the organization will survey multiple giant sequoia groves, including in Calaveras Big Trees State Park, Giant Forest in Sequoia National Park and Mariposa Grove in Yosemite National Park.

Signs of bark beetles on a giant sequoia.

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Wendy Baxter

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Ancient Forest Society

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It's not completely clear why this is happening.

Considering it seemed to start during the drought, it could be that the trees were so weakened by a lack of water and the extreme heat (associated with climate change), that the beetles were able to take advantage, similar to what happened in conifer forests across the Sierra Nevada. It can take sequoias multiple years to recover once rain returns.

As beetle attacks progress, trees tend to die from the top down.

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Nate Stephenson

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U.S. Geological Survey

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Fire could also be playing a role, according to Brigham. There seems to be a correlation between beetle attacks and severe fire scars at the base of the trees. While sequoias need fire to survive, extreme fires like those that we've seen in recent years, can damage their roots and trunks, compromising their ability to transport nutrients to the demanding, full green crown several hundred feet off the ground.

Is there any hope?

While there aren't any known solutions at the moment, a number are being explored.

Brigham said that they're considering tarping, chipping or removing fallen branches from around individual trees to see if it reduces beetle populations. Or, potentially watering trees under attack to reduce stress and enhance beetle fighting abilities.

Another possibility is the utilization of chemicals given off by the trees to attract beetles to traps — a technique that's used to help prevent the spread of the Red Palm Weevils throughout the state.

“The trees aren’t going to go extinct because of this beetle most likely," said Nate Stephenson, scientist emeritus with U.S. Geological Survey, who's long studied giant sequoias. “It is something worth watching and studying because we know so little at this point that better safe than sorry. Let’s understand it better and learn as much as we possibly can.”

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The Los Angeles Unified School District is preparing for possible “Super El Niño” storms that could damage schools and lead to closures, the district announced in a media release Tuesday.

District staff are clearing drains, trimming trees and checking roofs, windows and doors. LAUSD is also testing emergency equipment, including pumps and emergency lighting systems, and stocking supplies such as flashlights and drinking water.

“Preparing for severe weather starts well before the first raindrop,” Superintendent Andrés Chait said in a statement. “We can’t control the weather, but we can take steps now to protect our students and employees and help our schools stay ready.”

The district will monitor weather patterns using information from the National Weather Service and local emergency officials, it said.

LAUSD encouraged families to update their contact information to ensure they receive district calls, texts and emails. Families should also monitor weather alerts, follow emergency officials’ instructions, avoid flooded roads and review safe routes to and from school, according to the release.

“Preparing for a storm is a shared effort — from the crews maintaining school buildings to the principals reviewing emergency plans and the families making sure they can receive critical updates,” LAUSD said in the release. “By taking these steps before the rain begins, Los Angeles Unified is working to help students and employees stay safe and keep school communities as prepared as possible for the winter ahead.”

Southern California is likely in for a solid dose of rain this week, just days after heat and Santa Ana winds helped fuel several wildfires across the region.

Forecasters expect the bulk of the rain to roll into the Los Angeles basin Wednesday night and continue into Thursday morning, with a small chance of thunderstorms and hail.

The San Fernando Valley, San Gabriel Valley and coastal areas across L.A. and Orange counties could get around an inch over the next few days. Hills and mountains could get up to 3 inches.

“We could see some pretty high rain rates,” said National Weather Service meteorologist Mike Wofford. “It's a good storm for this time of year — it's a little stronger than what we would see normally.”

The possibility of significant rain in the mountains raises concerns about flooding in areas recently burned in wildfires, particularly around the Bryson Fire burn scar near Malibu, which is only a few days old. Burn scars can’t absorb heavy rainfall and are susceptible to landslides.

The National Weather Service has issued a flood watch for the Santa Monica Mountains and surrounding communities from Wednesday afternoon through Thursday. That means heavy rain there could flood streets, creeks and rivers. The flood watch area includes both the Bryson Fire and Palisades Fire burn scars.

This will also be the first nontropical storm of the season, meaning it’s moving into the region from the north. Most storms that hit Southern California follow a similar path, especially during the winter, unlike the tropical storms that formed off the coast of Mexico and brought muggy weather to the region this summer.

Nontropical storms also bring cold air to the region. On Wednesday and Thursday, forecasters expect highs in the 60s and 70s. High elevations will be even cooler.

The science research institute that would likely receive $4.2 billion in public taxpayer money if voters approve Proposition 38 this November had only three employees as of last month — far fewer than the 51 staffers it planned to have hired by last year.

Public statements and public records CalMatters obtained raise questions about how well prepared the institute is to shepherd so much money if the bond measure passes.

Prop. 38 would allocate up to $8.4 billion in bonds for scientific research on diseases and cures concerning the immune system, with an emphasis on finding treatments for Alzheimer’s, cancer and heart disease. The ballot language stipulates that a single, unnamed research institute would receive half the bond’s money to conduct research and partner with other researchers if it meets highly specific criteria. Bonds are a type of debt that must be repaid.

Previous reporting by CalMatters found only one institute in California currently meets those criteria: the California Institute for Immunology and Immunotherapy. The institute’s principal funder is billionaire Gary K. Michelson, who wrote Prop. 38 and is by far the largest donor to its political campaign.

Backers of the proposition said state bond money is needed to stabilize research funding after President Donald Trump repeatedly attempted to cut existing and future federal science grants.

The measure’s critics say Prop. 38 is well-intentioned but poorly designed because it overlooks the many established public and nonprofit university and hospital research labs in California. They also say California should not subsidize subsets of scientific research and instead should support research more broadly.

CalMatters obtained documents that included the five-year business plan of the California Institute for Immunology and Immunotherapy. The plan was part of the formal affiliation agreement between UCLA and the institute, which the two parties signed in August 2024. Among other details, the agreement requires the institute to pay UCLA 7.5% of the net revenue of any drugs and technologies developed by the institute’s staff. The institute is one of the founding tenants at a UCLA-owned research park in West Los Angeles, where the institute is leasing 235,000 square feet of research space, the institute says.

Far fewer employees than plan called for

Between summer 2024 and summer 2025, the institute committed to hiring “approximately” 51 employees, including six executives, five “world-class” scientists who can lead research labs, and 40 other employees, such as data scientists, lab technicians, biologists and administrative personnel. Between 2025 and 2027, the institute would hire roughly 90 more workers, including 10 research lab leaders, according to the agreement.

But John Mazziotta, a senior UCLA official who also serves as a board member of the immunology institute, last month said the institute has hired just three employees: a chief operating officer, a general counsel, and a scientific advisor, and “they're well into the search” for a director. Mazziotta, the CEO of UCLA Health and vice chancellor for health sciences at UCLA, made his comments during the Sept. 16 UC Regents meeting.

The Yes on Prop. 38 campaign has repeatedly refused to comment on whether the bond was written specifically for the immunology institute. Claudia Briggs, a spokesperson for the campaign, told CalMatters in July that whichever nonprofit receives the $4.2 billion portion of the bond fund should be a sophisticated one that “is prepared to accelerate lifesaving research immediately while maintaining the highest standards of scientific quality, accountability, and stewardship of public funds.”

At a September press conference, a Yes on Prop. 38 spokesperson appeared to confirm CalMatters’ findings that only one institute currently qualifies to be the one to receive half the bond money. “It is very likely that CIII, which is a research institute affiliated with UCLA, will qualify for half of the funds under the current criteria,” said Robin Swanson. CIII is the initialism for the immunology institute.

According to the five-year plan, the institute was supposed to spend $25 million on personnel between 2024-25 and 2025-26 and $45 million total on operating expenses in that time, including maintenance, utilities and rent. It was also supposed to spend an additional $167 million in that time on capital expenses, such as construction and demolition. However, Mazziotta told UC regents that the institute had so far spent a total of $20 million on “operating expenses, hires” and other expenses.

The Yes on 38 campaign refused CalMatters’ request to interview Michelson for this story, as did Michelson himself in a separate email. A spokesperson for the institute, Becky Warren, sent a written statement that didn't answer CalMatters' questions about employing far fewer people than the five-year plan laid out. Instead, she highlighted the promise of the institute and a few of its milestones, including signing the affiliation agreement with UCLA and clearing a state environmental review of its forthcoming research facility.

The institute won’t get state bond money if it isn’t ready to begin work, “plain and simple,” wrote Swanson, the Yes on 38 spokesperson, in an email. She stressed that though the institute very likely qualifies, the ultimate decision to award half the bond funding is up to the California Department of Public Health.

Institute facility will be built by 2028

The UCLA research park that houses the institute isn’t slated to be fully built until at least late 2028, according to the agenda item of the September UC regents meeting. The research park is a former mall UCLA acquired in late 2023 that’s now undergoing major retrofitting.

But the 2024 affiliation agreement between UCLA and the institute anticipated this. The agreement permitted the institute to use UCLA health research space on another campus property on an interim basis. Mazziotta told regents that research is underway there.

Mazziotta also told the regents the institute's construction costs are not fully funded — it still needs roughly $100 million. He said UCLA was in serious talks with a donor to provide about $50 million to the institute.

If Prop. 38 passes, the bond funding would be provided in increments based on how often the institute requests new money that senior state officials approve. If all the funds are depleted, Californians would repay the bond at a rate of $500 million to $600 million annually for about 20 years.

Institute would be exempt from public records act

CalMatters submitted the public records request to UCLA, which must comply with the California Public Records Act. The institute, as a private nonprofit, does not have to comply. And while Prop. 38 would channel billions of dollars in taxpayer money to the institute, the proposition’s language specifically exempts the nonprofit that will receive the $4.2 billion from state public meetings laws, political reform laws and the public records act. The other half of the funds would go to a council that’ll pick projects led by researchers from a limited pool of universities and nonprofits. The council would generally be governed by the state’s political reform act, which prohibits financial self-dealing.

Briggs defended the institute’s exemption in Prop. 38, writing that applying state transparency laws to existing private organizations would “not fit well with how private entities are organized and operate.” Instead, she noted the selected nonprofit institute would be required to publish annual reports on its research progress and financial plans plus commit to annual state audits, among other disclosures written into the ballot measure.

Still unclear to the UC regents is the relationship between UCLA and the institute on matters of public disclosure. Four senior UCLA officials sit on the institute’s board. So is a document held by those UCLA officials public because it’s related to UCLA affairs or private because it’s related to the institute’s affairs? UC’s general counsel couldn’t explain where that dividing line is after a regent member asked him. The regent member, Michael Cohen, said he wants more clarity when the regents meet again in November.

Gov. Gavin Newsom and the California Democratic Party endorsed Prop. 38, as have dozens of patient and research advocacy groups, plus the state GOP. The union of graduate students and post-doctoral researchers, whose pay often relies on science research funding, has also endorsed the proposition. The union doesn’t represent faculty.

Money raised in support of Prop. 38 now exceeds $66 million, including at least $61.2 million in contributions from Michelson and his policy institute. Roughly $14 million of that includes loans from Michelson. The no camp has raised about $8,800

This article was originally published on CalMatters and was republished under the Creative Commons Attribution-NonCommercial-NoDerivatives license.