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California a botanical and climate change hot spot

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California a botanical and climate change hot spot


UC Davis scientists and staff visit the site of the 2018 Camp Fire, near Paradise, California, with US Forest Service foresters. Credit: Jim Thorne, UC Davis

From coastal redwoods and Joshua trees to golden poppies and sagebrush, California is a global botanical hotspot. It’s also a place confronted with extreme heat, wildfires and crumbling coastlines.

The state’s natural beauty and history of pioneering conservation efforts make it a test bed for protecting biodiversity in the face of current and future climate change, argues a study led by the University of California, Davis.

Published July 29 in Proceedings of the National Academy of Sciences, the study, “Climate Change and California’s Terrestrial Biodiversity,” is part of a special PNAS issue on California sustainability.

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The study concludes that California’s 30 x 30 Initiative to preserve 30% of its lands and coastal waters by 2030, along with efforts to harmonize biodiversity conservation and renewable energy, is a promising step. It also highlights the need for California to shift away from its decades-long fire suppression policies and adopt fire strategies reflective of new fire regimes.

“California has had a history for over 100 years of being a leader in protecting the environment—from setting aside parks for people to climate adaptation,” said lead author Susan Harrison, a professor in the UC Davis Department of Environmental Science and Policy. “The threats are extreme and unprecedented, but California has always been a state where creative new solutions have emerged.”

California’s climate has become warmer, drier and more variable since the mid-1900s, the study noted. It examined major threats climate change poses to the state’s biodiversity and sustainability. These include the impacts of shifting plant biodiversity, land-use change, wildfire and renewable energy, and the policy responses to those challenges.

California a botanical and climate change hot spot
Wildflowers blanket Molok Luyuk (foremerly Walker Ridge) in the Berryessa Snow Mountain National Monument. The site was slated for wind energy production despite its rich biodiversity before being protected. Credit: Jesse Pluim/Bureau of Land Management

Hot spots on the move

The authors modeled the distribution of about 6,400 native plant species, identifying 15 regional plant biodiversity hot spots—from small areas, such as the Channel Islands, to vast parts of the Sierra Nevada and coastal ranges.

The models indicate these hot spots could lose an average of 19% of their native plant species by 2080 under current climate projections. California’s complex mosaic of microclimates means the state’s species could respond in a wide variety of ways to climate change. Some hot spots are expected to move toward the coast or upslope, while others remain or disappear.

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Those stakes help outline the need for renewable energy projects to align with expected biodiversity shifts and needs. For example, Molok Luyuk, or Condor Ridge (formerly Walker Ridge), was slated for wind development projects along its blustery ridge despite its rich biodiversity, before earning protection as part of Berryessa Snow Mountain National Monument.

“This paper is pointing out that we need to be proactive,” said co-author James H. Thorne, a research scientist with the UC Davis Environmental Science and Policy department. “We can’t be reactive like, ‘Oh, this wildfire is out of control. Oh, this species is disappearing. Oh, we misplaced where this green energy site should go.’ We have tools that can be used, some of which we discuss in this paper.”

California a botanical and climate change hot spot
A redbud blooms in a foothill canyon of Sequoia and Kings Canyon National Park. Credit: Jim Thorne, UC Davis

A new mindset

Wildfire is a nearly year-round reminder of the state’s hotter, drier climate.

The authors write that fire management policies in California are less progressive than its policies for climate and conservation. The paper encourages the state to move away from its longstanding policy of fire suppression and adapt its strategies to use fire as an ecosystem management tool.

State and federal agencies have set ambitious targets to increase the use of fire in land management but have been stymied by bans on prescribed fire motivated by safety and air quality concerns.

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Harrison calls wildfire and climate change “game-changers” for how we think about conservation.

“Traditionally, ‘conservation’ had a restrictive meaning—we try to keep things the same. If anything goes missing, we try to put it back,” Harrison said. “But now, we require a different mindset. We need to be willing to modify traditional views of conservation. We need continual innovation.”

More information:
Harrison, Susan, Climate change and California’s terrestrial biodiversity, Proceedings of the National Academy of Sciences (2024). DOI: 10.1073/pnas.2310074121. doi.org/10.1073/pnas.2310074121

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California a botanical and climate change hot spot (2024, July 29)
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Billionaire Steyer’s spending binge dwarfs rival campaigns in California governor’s race

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Billionaire Steyer’s spending binge dwarfs rival campaigns in California governor’s race


LOS ANGELES (AP) — In the wide-open race for California governor, billionaire Tom Steyer is on a spending binge.

The hedge fund manager-turned-liberal activist is using his personal fortune to saturate TV screens and mobile phones with advertising, while his competitors accuse him of trying to use his vast wealth to buy the state’s most powerful job.

Steyer’s ads — in which he promises to bring down household costs or rails against federal immigration raids — appear inescapable at times in heavily Democratic Los Angeles, the state’s largest media market. Data compiled by advertising tracker AdImpact show Steyer has spent or booked over $115 million in ads for broadcast TV, cable and radio — nearly 30 times the amount of his nearest Democratic rival.

If he makes it through the June 2 primary election, Steyer could easily eclipse the 2010 record set by Republican Meg Whitman, who spent $178.5 million in a losing bid for governor, much of it her own money. At the time, it was the costliest campaign for statewide office in the nation’s history.

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Even when ad buys from all his major competitors are combined, along with ad purchases by independent committees supporting candidates, Steyer is outspending the field by tens of millions of dollars.

“Billionaire money is flooding our state in an attempt to buy this election,” former U.S. Rep. Katie Porter, one of Steyer’s chief rivals, warned her supporters this month.

Mail-in ballots are set to go out to voters next month. Steyer is among a crowd of candidates hoping to seize a spotlight after former Democratic U.S. Rep. Eric Swalwell’s dramatic departure from the race following sexual assault allegations that he denies.

But while Steyer has ticked up in polling amid his spending splurge, he has not broken away from the field, leaving some wondering if he’s getting value for his dollars.

“If your first round of ads doesn’t move you dramatically (in the polls), the third, fourth, fifth, six, seventh and eighth rounds won’t either,” said veteran Democratic strategist Bill Carrick, who for years advised the late Democratic U.S. Sen. Dianne Feinstein. “There is something inherently holding Steyer back.”

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In recent prior campaigns for governor, at this stage a leading candidate was taking control of the race. This year, voters appear to be shrugging at a contest that lacks a star candidate among seven leading Democrats and two Republicans.

“Somehow the campaign is frozen,” Carrick added.

History shows that money doesn’t always translate into votes.

Billionaire developer Rick Caruso spent over $100 million in 2022 in his bid to become Los Angeles mayor, much of it his own money, but he was handily defeated by Mayor Karen Bass, who spent a fraction of Caruso’s total. Billionaire former New York City Mayor Michael Bloomberg spent more than $1 billion of his own money on his 2020 presidential bid before dropping out. And Steyer’s money was unable to lift him into contention in the 2020 presidential contest, when he dropped out early in the year after a poor finish in the South Carolina primary.

Steyer has never held elected office.

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In a 2019 interview with The Associated Press, Steyer was asked what he would say to people who think he’s trying to buy the presidency.

“I don’t think that’s possible,” Steyer said at the time, before adding, “I’m never going to apologize for succeeding in business. That’s America, right?”

His campaign did not respond directly when asked about similar criticism facing his run for governor.

“Tom now stands as the only Democrat with the grassroots energy, institutional backing and resources to advance to the general election,” spokesperson Kevin Liao said in a statement.

The governor’s race was recently reordered by two developments: Swalwell, a leading Democrat, abruptly withdrew from the race then resigned from Congress, following sexual assault allegations. Meanwhile, President Donald Trump endorsed conservative commentator Steve Hilton.

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Still, there is no clear leader.

Polling in late March and early April by the nonpartisan Public Policy Institute of California found a cluster of candidates in close competition: Democrats Steyer and Porter, Republicans Hilton and Chad Bianco, and Swalwell. Other candidates were trailing. The polling was conducted before Swalwell withdrew.

Democrats have feared the party’s large number of candidates could lead to them getting shut out of the general election in November. That’s because California has a primary system in which only the top two vote-getters advance to the general election, regardless of party.

Leading Democrats are all claiming to have picked up support since Swalwell’s exit. Steyer nabbed one plum endorsement, when the influential California Teachers Association, which previously backed Swalwell, recommended him.

In his ads, Steyer promises to “abolish” U.S. Immigration and Customs Enforcement, which has been staging raids across California. In another, he laments the state’s punishing cost of housing, “Everybody needs an affordable place to live,” he says.

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Tory Lanez Sues California Prison System for $100 Million Over Stabbing

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Tory Lanez Sues California Prison System for 0 Million Over Stabbing


Rapper was stabbed 16 times by fellow inmate in May 2025 while 10-year sentence in Megan Thee Stallion shooting case

Tory Lanez has filed a $100 million lawsuit against the California Department of Corrections stemming from a May 2025 incident where the rapper was stabbed in prison.

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Lanez — born Daystar Peterson and currently serving a 10-year sentence after being found guilty in the Megan Thee Stallion shooting case — also sued the warden and guards at the California Correctional Institute in Tehachapi, where the rapper was stabbed 16 times in an “unprovoked life-threatening attack” by another inmate, the lawsuit states. 

Peterson was hospitalized following the May 2025 incident, suffering a collapsed lung among stab wounds to his back, torso, and head.

According to the Associated Press, the lawsuit criticized the Department of Corrections for housing Peterson with fellow inmate and alleged attacker Santino Casio, who was serving a life sentence for second-degree murder. “The choice to house Casio with Peterson was known or should have been a known danger,” the lawsuit said, adding that Tory Lanez’ “high-profile celebrity status” made him a target.

The lawsuit also said that prison guards were slow to respond to the shanking, and didn’t employ flash grenades or other measures to halt Casio’s attack.; Casio was not charged for stabbing Peterson, the Associated Press notes.

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Lanez, who following his hospitalization was transferred to San Luis Obispo County’s California Men’s Colony, also alleges in the lawsuit that he never received his possessions from the California Correctional Institute in Tehachapi, including songbooks filled with lyrics to his unreleased music.

Lanez is serving a 10-year prison sentence for shooting Megan Thee Stallion in the foot during a confrontation in the summer of 2020. He was eventually convicted on several firearms charges, including assault with a firearm, in December 2022. In November 2025, his appeal was denied by a three-judge panel, and the 10-year sentence was upheld.



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California DOJ cracks down on hospice fraud. Takes shot at Trump Administration

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California DOJ cracks down on hospice fraud. Takes shot at Trump Administration


From one crackdown on hospice fraud to another.

A few weeks ago, the FBI arrested multiple people in Southern California that were accused of defrauding the government for millions of dollars.

In a more recent announcement last Thursday, California’s State Attorney General Rob Bonta held a press conference to announce a fraud bust of their own.

“Operation Skip Trace uncovered and ended a hospice fraud scheme that defrauded Medi-Cal of $267 million,” Bonta said. “So just to be clear, a quarter billion dollars over funds that are paid for by California taxpayers, funds that are meant to provide care to Californians in need. It is unacceptable. It is illegal and we will not stand for it.”

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The operation saw a total of 21 suspects charged as a result and dismantled a major hospice fraud scheme, with two handguns and over $750 thousand in cash seized as well.

According to the state’s attorney general, this is just one of the many cases over the years the state has cracked down on.

“This is just the latest example of the California DOJ’s longstanding ongoing and successful efforts to combat hospice and medical fraud,” Bonta said. “We have been doing this work for years. We’ve been doing it successfully before certain people in this country decided to think about it for the first time. We will continue to do this work. Heads down, sleeves rolled up, important investigative work, prosecutorial work.”

He added to that by taking a shot at the Trump Administration’s latest fraud operations.

“While healthcare fraud might be President Trump’s shiny new political talking point, the California DOJ has been going after healthcare fraud since 1979,” Bonta said. “For decades, Trump is late to the party. Protecting taxpayer dollars and protecting programs sick and vulnerable Californians rely on have been our priority for nearly five decades.”

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Governor Gavin Newsom also spoke out about this latest crackdown while taking a shot of his own at President Trump.

In a post to “X” the Governor’s Press Office wrote in part quote…

“California has been cracking down on hospice fraud long before Trump gutted oversight and pardoned the architect of the biggest health care fraud scheme in U.S. history.”

State Republicans have responded to this latest announcement from Attorney General Bonta, calling for a special session to demand accountability from the Governor on widespread fraud.



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