Posts Tagged: Justin Brashares

UC ANR scientists receive state cannabis research grants

Cannabis grows near a salmon stream in Humboldt County. Environmental impacts of cannabis are among the research funded to inform cannabis policy in California.

Several scientists affiliated with the University of California Agriculture and Natural Resources have received grants from the California Bureau of Cannabis Control. The BCC awarded on Nov. 13 a total of $29,950,494 in public university research grants across California for research projects related to the implementation and effect of Proposition 64.

Research proposals had to fall within one of the several specified categories, including public health, criminal justice and public safety, economics, environmental impacts and the cannabis industry.   

UC ANR-related cannabis projects and their principal investigators include:

Cannabis industry: Assessment of the location, structure, function, and demographics of licensed cannabis, focusing on geographical price differences, and differential impacts of local Prop 64-related regulations on the competitiveness of licensed businesses – Daniel Sumner, UC Davis professor in the Department of Agricultural and Resource Economics and director of the UC Agricultural Issues Center, $726,816

Economic impacts: Market prices for licensed and unlicensed cannabis and the effects of the current and alternate cannabis tax structures and tax rates on the private and public sectors in California, including government administrative costs and revenues - Sumner, $655,564

Environmental impacts of cannabis cultivation in California as affected by the farm economics of licensed and unlicensed cannabis production, including effects of testing regulations and compliance with the criminal prohibition of unlicensed cannabis - Sumner, $562,240

Assessing environmental impacts of cannabis-related noise and light disturbance to inform management of California wildlife – Justin Brashares, UC Berkeley professor in the Department of Environmental Science, Policy and Management, and Phoebe Parker Shames, graduate student, $489,762

Examining tribal sovereignty over cannabis permitting on native ancestral lands – Jennifer Sowerwine, UC Cooperative Extension specialist; Peter Nelson, professor; and Van Butsic, UC Cooperative Extension specialist; all in the UC Berkeley Department of Environmental Science, Policy and Management, $465,902

Cultivation bans, local control, and the effects and efficacy of Proposition 64 – Christy Getz, UC Cooperative Extension specialist in the UC Berkeley Department of Environmental Science, $328,916

Cannabis and wildfire: Current conditions, future threats, and solutions for farmers – Ted Grantham, UC Cooperative Extension specialist in the UC Berkeley Department of Environmental Science and Butsic, $319,091

Cannabis water-use impacts to streamflow and temperature in salmon-bearing streams – Mary Power, professor in the UC Berkeley Department of Integrative Biology, and Grantham, $314,417

The effect of local cannabis regulation on property prices – Butsic, $270,269

California cannabis workers: perceptions, beliefs, and knowledge of occupational health and industry hazards – Marc Schenker, professor in the UC Davis School of Medicine's Department of Public Health Sciences, $144,949

Related stories:

Cannabis Research Center at UC Berkeley https://rausser.berkeley.edu/news/2020/11/researchers-receive-grants-bureau-cannabis-control.

Cannabis and Hemp Research Center at UC Davis https://cannabis.ucdavis.edu/news/BCCawards

For a list of all public university projects funded by the Bureau of Cannabis Control, visit https://bcc.ca.gov/about_us/documents/media_20201113.pdf.

A quiet carnivore recovery

California land managers and wildlife experts are increasingly tasked with managing the return of long-suppressed predators to the landscape, including wolves, mountain lions, badgers, foxes, coyotes, bobcats, and bears. As a result, California is poised to see growing numbers of complex human-wildlife interactions, said Justin Brashares, UC Berkeley professor and UC ANR researcher. 

State and federal policies once incentivized the removal of large carnivores, even offering bounty payments, Brashares said. The last California grizzly became a victim of such practices in 1922. The gray wolf was exterminated shortly thereafter, only to make a historic return 90 years later in the form of a single young male called OR-7, who has been followed into California by several other wolves.

Wolf OR-7 is the first wolf to live in California since their extinction in the 1920. (Photo: California Department of Fish and Wildlife, 2012)

Beginning in the 1970s with the federal Endangered Species Act and the banning of bounties, things began to change. Poisons and leghold traps were prohibited in 1998. Next came an end to the sport hunting of mountain lions in 1990, bear hunting with dogs in 2012, and bobcat trapping in 2015. The cumulative result of these actions, which eased centuries of pressure on wild animals treated as pests, has been a “quiet carnivore recovery” happening across our state, Brashares said. And depending on whom you ask, that may be a great thing or a terrible thing.

An ecologist or environmentalist might emphasize the role of carnivores in maintaining healthy ecosystems.

“What we're seeing across the state, particularly over the last 10 years, is arguably an unprecedented recovery of our wildlife communities,” Brashares said.

A livestock rancher, meanwhile, might view the development with dread.

“They're the ones most likely to be negatively impacted by the return of these animals.” A similar divide, he notes, exists between urban and rural dwellers.

“Those who face the challenges of coexistence with carnivores on a day-to-day basis tend to be more negative about their return,” he says.

The rest of us tend to view the return of carnivores — particularly large, charismatic ones — much more favorably.

Mountain lions are considered charismatic wildlife. (Photo: U.S. Fish and Wildlife)

“In more-urban communities, we often have the luxury of interacting with carnivores on our own terms, by going out and seeking them in wild settings, away from our safe living and work environments, in places like Yosemite National Park,” Brashares said.

But anyone who has lost a dog or cat to a mountain lion, let alone commercial ranchers trying to protect their livelihood from hungry coyotes and wolves, may feel differently. Even so, he said, reliance on lethal control as the primary strategy for managing predators in the state is becoming a thing of the past.

How to behave instead is, in part, a question for science — and one that Brashares is working to answer through ongoing research at the University of California's Hopland Research and Extension Center (HREC), in southern Mendocino County. There the university owns a 5,300-acre parcel with oak woodland, grassland, chaparral, and riparian environments — and, according to recent surveys, wildlife densities on par with those in Yellowstone and Yosemite. Linked to the massive Mendocino and Shasta-Trinity National Forests, it's part of a corridor of undeveloped and protected land extending all the way to the Canadian border. As such, it commonly hosts coyotes, bobcats, mountain lions and black bears.

The facility is also home to more than 500 sheep, on-site since the 1950s for the study of sustainable agricultural practices. But sheep, open space, and carnivores spell conflict, and the flock has regularly suffered significant losses to coyote predation. The coyotes, in turn, have traditionally been shot on sight, in line with established wildlife management practices in agricultural settings.

Good fencing is one tool that allows coyotes and sheep to share the open range.

In 2014 alone, nearly 50 lambs were killed by coyotes at HREC, and another 178 went unaccounted for. Meanwhile, 26 coyotes were killed to prevent further losses to the flock. Toward the end of the year, when Kim Rodrigues became director of HREC, she realized the current system wasn't working and set about to fix it.

Rodrigues brought on more guard dogs and a new shepherd; she improved fencing, and changed the rules about shooting coyotes and other predators. She also initiated a number of research efforts, in which Brashares now plays a lead role, to critically evaluate the effectiveness of tools like dogs, fences, and “fox lights,” which are randomly lit on the fields to scare off predators. Brashares and Rodrigues are also studying how to better use technology like GPS, drones, and tagging to understand the often-mysterious behavior and movement of carnivores and their prey, in hopes of gaining new insights for human-wildlife coexistence.

After Rodrigues instituted some of these changes, the numbers of lamb and coyote deaths at HREC began to decrease dramatically. In 2016, fewer than five lambs were believed to have been killed by coyotes, with another eight unaccounted for, and just seven coyotes were shot.

Professor Justin Brashares (center) and members of his lab utilize tagging, drones, and GPS technologies to track the movement of carnivores and their prey. (Jim Block)

In a bid to make HREC a statewide hub for cutting-edge research and discussion around human-wildlife interactions, Rodrigues enlisted Brashares's help in December 2015 in hosting a community conversation with stakeholders about the management of wildlife and livestock using nonlethal methods. A second discussion is planned for this June.

“My research and extension focus is now on how we can start to explore standard operating procedures that actually have a stated goal to protect both the livestock and the wildlife, and not one or the other,” Rodrigues says. “It's changing the either/or conundrum to thinking about how we really value both on the landscapes that we're managing.”

Excerpted from the Spring 2017 issue of Breakthroughs, the magazine of the College of Natural Resources at the University of California, Berkeley. Read the full article.

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