Posts Tagged: climate

White House Summit explores impact of extreme heat, ways to adapt

UC ANR Small Farms Network supports small-scale and underserved farmers impacted by extreme heat

Ruth Dahlquist-Willard, interim director for the UC Sustainable Agriculture Research and Education Program, joined more than 100 participants from across the country at the first-ever White House Summit on Extreme Heat. Community representatives and practitioners met with federal agency representatives and Biden Administration officials to discuss successful locally tailored, community-driven practices to adapt to extreme heat as well as available federal resources.

According to the National Oceanic and Atmospheric Administration or NOAA, summer 2024 was California's warmest summer on record. As California's climate is changing, episodes of extreme heat are becoming more common, leading to substantial health, economic and ecosystem impacts. 

In the agricultural sector, extreme heat events can cause heat illness in farmworkers, crop losses and changes in pest pressure. California crop losses due to drought, wildfire and heat were estimated at $239 million in 2023. 

Disaster relief funds are available to help growers recover from lost production due to extreme heat. Since 2021, the UC ANR Small Farms Network has connected small-scale farmers with over $5.8 million in direct-to-producer relief funds for losses related to drought, flooding and other extreme weather events.

To further support small-scale farmers in adapting to the changing climate, Dahlquist-Willard and the Small Farms Network are evaluating how the extreme heat of summer 2024 impacted farmers. Farmers reported anecdotal observations that included:

• Shifting work hours to cooler parts of the day
• Closing farm stands and farmers markets due to extreme heat
• Crops ripening more quickly than expected, impacting harvesting and packing schedules
• Poor fruit set due to extremely high temperatures 

The team is working to determine what damage symptoms on small-acreage California specialty crops can be attributed to extreme heat based on scientific literature and assessments from UC ANR colleagues. Understanding the impact of extreme heat on the farming community can help inform research and policy, ultimately equipping farmers with strategies to adapt to extreme heat events. 

“It was inspiring to meet with leaders from around the nation who are working to support communities impacted by extreme heat and learn about the creative solutions they are implementing,” said Dahlquist-Willard. “The challenges faced by these communities make it all the more important to continue to work against climate change by reducing greenhouse gas emissions, as well as to develop new methods and resources to mitigate the effects of extreme heat and other climate impacts.”  

The Extreme Heat Summit highlighted the Biden-Harris Administration's investments in climate reliance and put forth an Extreme Heat Call to Action calling upon public and private sectors to prepare for future extreme heat events. Communities and governments interested in participating are asked to use all available tools to protect people from extreme heat. Approaches and tools which could be used to protect people and resources from extreme heat are highlighted in the U.S. Climate Resilience Toolkit and the National Heat Strategy. Submissions for the Call to Action will be accepted through Nov. 1, 2024.

Further reading: 

Heat Illness Prevention, UC Davis Western Center for Agricultural Health and Safety

Pathak et al., 2018. Climate Change Trends and Impacts on California Agriculture: A Detailed Review

UC's New Climate Action Goals: Frequently Asked Questions

Paper highlights how climate change challenges, transforms agriculture

As the climate continues to change, the risks to farming are only going to increase.

That's the key takeaway from a recent paper published by a team that included UC Merced and UC Agriculture and Natural Resources researchers. The paper dives into what those challenges are, how farmers are working to address them and what should come next.

"Climate Smart Agriculture: Assessing Needs and Perceptions of California's Farmers" was first authored by Samuel Ikendi, academic coordinator, with Tapan Pathak, UC Cooperative Extension climate adaptation in agriculture specialist, as a corresponding author. Both are based at UC Merced. Pathak is also a project director of National Institute of Food and Agriculture-funded project "Multifaceted Pathways to Climate-Smart Agriculture through Participator Program Development and Delivery," which supported this study. The study appeared in the open access journal Frontiers in Sustainable Food Systems.

The needs assessment was designed to understand farmers' perceptions and experiences with climate change exposures; the risk management practices they currently use; and what tools and resources would assist them in making strategic decisions.

Of the farmers surveyed, roughly two-thirds agree climate change is occurring and requires action. Even more said they are interested in learning more about the impacts of climate change on the agricultural industry. Most respondents said they experience greater climate change impacts on their farms today compared with 10 years ago.

Farmers were very concerned with water-related issues, with those in the San Joaquin Valley, Central Coast and Inland Empire areas particularly worried about a reduction in the availability of groundwater. Increased drought severity was a very significant concern among farmers in the Inland Empire, Central Coast and Southern regions. Farmers in the North Coast and Southern regions were concerned about increased damage to crops due to wildfire.

Closely related were temperature-related issues, including crop damage due to extreme heat.

Those who farm vegetables were more concerned about water availability for irrigation, while fruit farmers were more concerned about increased crop/water stress and increased crop damage due to extreme heat.

Many respondents said they are implementing climate adaptation practices including managing water resources, maintaining soil health and making more use of renewable energy sources. They are seeking insurance and government help to pay for these adaptations and increase their agricultural resilience, the researchers wrote.

The farmers expressed interest in learning more about measures they might take to mitigate climate change. But they cited significant barriers to this work, including government regulations, high implementation cost, labor access/cost, access to water and the availability of money to pay for it.

"Climate change is significantly altering California's highly diverse agricultural landscape, posing challenges such as increased water stress, heat stress, and shifting growing seasons," Pathak said. "Climate-smart agriculture practices can alleviate some of those stresses."

But, he said, research and UC Cooperative Extension efforts only have value if they lead to enhanced climate-informed decision-making at the local level.

"Assessing their level of knowledge, perception and needs will help in tailoring research and extension activities that are most relevant to farmers on the ground," Pathak said. "Results from this study could also provide important policy insights on financial incentives and technical assistance."

 

Webinars explore role of trees in climate change resilience, May 14-16

A free webinar series titled “Trees to the Rescue: Solutions for Climate Change” will be held on May 14-16, from 4 p.m. to 5:30 p.m. each day. The webinars are sponsored by the University of California Thelma Hansen Fund.

“The webinars aim to increase our understanding of the role of trees in mitigating and adapting to climate change, how to plant the right trees and keep them healthy in urban environments, and the challenges of increasing the number of trees at the local level,” said Annemiek Schilder, director of Hansen Agricultural Research and Extension Center, who is organizing the series. Hansen REC is operated by UC Agriculture and Natural Resources.

Participants will discuss some of the challenges and pitfalls of reforestation, urban greening and tree equity. They will also provide diverse perspectives on tree planting and maintenance efforts and policy at the local level.

“Anyone interested in learning about the importance of trees in urban environments and climate resilience, as well as tree retention in the landscape should join us,” she said.

The agenda for each 90-minute webinar is listed below. To register, visit https://bit.ly/HansenTreesWebinar. 

Tuesday, May 14: Trees as a Tool for Climate Change Mitigation and Resilience

4 p.m. Welcome—Annemiek Schilder, Director of Hansen Agricultural Research and Extension Center

4:05 p.m. Opening Remarks—Matt LaVere, Ventura County Supervisor District 1

4:10 p.m. Improving Outcomes of Tree Growing and Forest Restoration Efforts—Karen Holl, Professor of Environmental Studies, UC Santa Cruz

4:50 p.m. Climate Resilience through Urban Greening—Edith de Guzman, UC Cooperative Extension Specialist, Water Equity and Adaptation Policy, UCLA

5:30 p.m. Closing—Annemiek Schilder 

Wednesday, May 15: Optimizing Tree Survival in a Changing Climate

4 p.m. Welcome—Emma Volk, Production Horticulture Advisor, UCCE Ventura and Santa Barbara counties

4:05 p.m. Cooling Urban Heat Islands with Climate-Resilient Trees—Janet Hartin, Environmental Horticulture Advisor, UCCE Los Angeles and San Bernardino counties

4:30 p.m. Keeping Trees Healthy from Sapling to Maturity—James Downer, Environmental Horticulture and Plant Pathology Advisor Emeritus, UCCE Ventura County

5:05 p.m. Dealing with the Inevitable Threat of Exotic and Invasive Pests—John Kabashima, Environmental Horticulture Advisor Emeritus, UCCE Orange County

5:30 p.m. Closing—Emma Volk 

Thursday, May 16: Tree Advocacy and Planning at the Local Level

4 p.m. Welcome—Julie Clark, Natural Resources Community Education Specialist, UCCE Ventura County

4:05 p.m. Native Tree Restoration with Partners and the Public—Joey Algiers, Restoration Ecologist, Santa Monica Mountains National Recreation Area

4:30 p.m. Panel Discussion (Joey Algiers, moderator):

• Joey Algiers, Santa Monica Mountains National Recreation Area
• Mireille Vargas, County of Ventura Sustainability Division
• Mikaela Randolph, Green Schoolyards America
• Jan Scow, Registered Consulting Arborist, Ojai Valley
• Max Young, Ventura Regional Fire Safe Council

5:30 p.m. Closing—Julie Clark

 

New UC California Naturalists inspire care for nature in San Diego County

Nearly 200 residents trained in past seven years by program, a part of UC Environmental Stewards  

On one of her darkest days, Tammah Watts stood in front of her kitchen sink to fill a pitcher of water. Outside of her window, the San Marcos resident noticed a flutter in the distance. She spotted a small yellow bird emerge from the tree and her eyes grew in admiration.

Bird-watching from her kitchen window became an escape for Watts while she was temporarily homebound after a surgery. It's where she found connection beyond the interior space of her home.

“I started noticing other birds that had always been there. The yard didn't change, but my mind and my perspective did,” she said.

Eager to learn more and expose others to her new hobby and its healing power, Watts joined the University of California Environmental Stewards program, a statewide program housed under UC Agriculture and Natural Resources, to become a certified California Naturalist.

The program offers two environmental education certification courses: the California Naturalist course, which introduces people to the wonders of California's unique ecology and engages the public in the study and stewardship of the state's natural communities, and a separate Climate Stewards course.

One of the many strengths of the program is that it allows people from diverse backgrounds to find common ground in nature even if how they became interested varies, said Eliot Freutel, a community education specialist for the UC Environmental Stewards program in Southern California.

 “Our partners that help us administer the course are organizations that already have access to the public and provide informal science education, such as natural history museums or Audubon societies,” Freutel added.

Welcoming a new cohort of environmental stewards

In early March, the longest-standing California Naturalist course in San Diego County graduated 25 new members, Watts being one of them, under Karen Merrill and Paige DeCino's instruction. For seven years, Merrill and DeCino have served as co-instructors at the Buena Vista Audubon Nature Center in Oceanside and graduated 166 members prior to their most recent and final class.

Transitioning into retirement, DeCino and Merrill reflected on their seven years of service and are proud to see younger and more diverse faces join the California Naturalist program. Tucker Shelton, who recently graduated alongside his mom, is among the few young people who have joined the program over the years. A love for nature began when Shelton discovered tide pools when he was just a boy. At 14 years old, Shelton wants to inspire a generation of youth with a passion and care for nature.

“When you're younger and your brain is still developing, you're the most interested in new things. If you find a passion at a young age, you'll most likely grow up with it becoming a part of you,” said Tucker, whose capstone project focuses on an essay about the endangered Townsend's big-eared bat and uses stamp art to raise awareness. His art will be featured and sold at an upcoming exhibit and all proceeds will be donated to the Volcan Mountain Wilderness Preserve in Julian.

Hannah Marquez, another recent graduate, was born and raised in San Diego. She values its cultural diversity and believes connecting the public to nature begins with language. In working with Tecolote Canyon Natural Park and Nature Center in Mission Valley to establish an updated native plant library, Marquez is providing relevant information and resources in English and Spanish.

“A lot of people aren't comfortable using technology, and relying on Google Translate isn't going to cut it,” said Marquez, adding that her parents' limited English inspired this project.

Marquez hopes to interest more people in growing native plants in their backyard and believes accessible information is the first step to doing so.

“This has been so rewarding for us,” said Merrill. “Typically, our students are already involved in the community, but for those who aren't, it's amazing to see them become a part of the community and engage in a way that they haven't before.”

DeCino agreed and said that she really hopes to find new instructors to keep the momentum of California Naturalists in San Diego County alive. “Even though we're retiring, we'll still be around here and there, but its important to us that we pass the torch,” DeCino said.

The future of California Naturalists in San Diego County

What's next for San Diego County, you ask?

“We definitely want to expand in the area. But right now, we're looking for alums who are interested in taking over the program held at Buena Vista Audubon Nature Center,” Freutel said. “I'm also hoping to secure more partnerships throughout San Diego County so that the course is offered in various places, not just North County, which can lead to accessibility concerns.”

Like other students, Marquez commuted an hour, each way, to participate in the UC Environmental Stewards program. “It's a worthwhile course, one that helps people have a positive impact in their own community,” said Freutel. 

For Watts, helping people find healing and connection to the world around them – an experience her book, a guide to the powerful healing of bird-watching, discusses – is a priority. “It's not just about watching birds,” she said. “It's about noticing the tree the bird lives in, and the ground the tree is growing in.” 

During a nature walk that Watts led for a group of kids, she noticed two sets of footprints in the dirt. Immediately, she could differentiate the two. “One belonged to a raccoon and the other belonged to a deer,” Watts said. “I was so excited that I could tell them apart, and I promise I didn't know this before taking the CalNat course.”

To learn how you can join the UC Environmental Stewards program and become a California Naturalist or Climate Steward, visit: https://calnat.ucanr.edu/Take_a_class/

Water risks to agriculture: Too little and too much

Water is among the most precious resources on the planet. Some areas don't get enough; some get too much. And climate change is driving both of those circumstances to ever-growing extremes.

Two UC Merced experts in civil and environmental engineering took part in a recent report by the Environmental Defense Fund examining the issue and potential solutions. Associate Professor of Extension Tapan Pathak and Professor Josué Medellín-Azuara co-authored the report, "Scarcity and Excess: Tackling Water-Related Risks to Agriculture in the United States," and wrote the section pertaining to California.

In addition to climate change, disruptive human interventions such as groundwater over-extraction, sprawling drainage networks and misaligned governance are driving up water-related agricultural costs, particularly in midwestern and western states, the researchers found.

The problem is magnified in California, which hosts the largest and the most diverse agricultural landscape in the U.S., Pathak and Medellín-Azuara wrote, with gross revenues from farms and ranches exceeding $50 billion.

"Due to the favorable Mediterranean climate, unique regional microclimate zones, a highly engineered and developed water supply system, and a close connection between producers and research and cooperative extension institutions, California's agricultural abundance includes more than 400 commodities, some of which are produced nowhere else in the nation," the UC Merced researchers wrote.

But the state's varying climate and water needs pose a challenge. Though most of the precipitation falls in the northern part of California, the southern two-thirds of the state account for 85% of its water demand. And all of those crops must be watered in the summer, when there is little, if any, rainfall.

Some of the water comes from snowpack developed through winter storms and stored in reservoirs as it melts. Much of it comes from the Colorado River.

"Substantially less water is captured and stored during periods of drought, imperiling California's water supply and putting agricultural water needs at risk," Pathak and Medellín-Azuara wrote.

Climate change, with increasing periods of drought between excessively wet winters, magnifies that risk.

"Further, the rate of increases in the minimum temperatures in the Sierra Nevada is almost three-fold faster than maximum temperatures, resulting in potential decrease in the snowpack, earlier snowmelt, and more water in liquid form as opposed to snow," the researchers wrote. "According to the California Department of Water Resources, by 2100, the Sierra Nevada snowpack is projected to experience a 48% to 65% decline from the historical average."

Climate change is also expected to affect the availability of water from the Colorado River.

Climate extremes such as heat waves, drought and flooding - giving rises to increased weeds, pests and disease - are already significantly impacting agriculture and the broader economy, Pathak and Medellín-Azuara wrote.

The state's drought from 2012 to 2016 led to about 540,000 acres of fallow farmland in 2015, costing the state's economy $2.7 billion in gross revenue and 21,000 jobs. With the lack of precipitation, farmers increasingly pumped groundwater to irrigate crops, depleting those resources.

The report goes on to recommend policies, programs and tools be developed for agricultural resilience, including:

• Changing land use and crop management practices to support a transition to an agriculture footprint that can be sustained by the available water supplies.
• Increasing farmer and water manager access to important data and innovative technological tools to support their efforts.
• Reimagining built infrastructure and better using natural infrastructure so regions are better equipped to handle weather extremes.
• Developing policy and funding mechanisms to support mitigation and adaptation to water-related risks, avoid maladaptation and ensure food and water security.

"California's innovative agriculture needs to rapidly adapt to more volatile water availability, climate-driven higher water demands, and regulation protecting groundwater reserves, communities and ecosystems," Medellín-Azuara said. "The early adoption of more sustainable practices in agriculture will likely pay off dividends both in the short and long terms."

Added Pathak, "California faces significant challenges related to climate change, but it also presents opportunities for innovations, collaborations and sustained growth. To make agriculture resilient to climate risks, we need to engage in holistic solutions that integrates environmental, social, economic and policy considerations."

 

Read more