- Author: Shayna Foreman
Reposted from the UCANR news blog
In the concrete jungle of Los Angeles, people sometimes forget that Southern California actually has a wealth of natural open spaces. From the Mojave desert to four National Forests, Southern California supports vast wilderness spaces, many just a stone's throw from major cities. And if one looks closely, even those urban centers are filled with recreational parks and trails in an attempt to sate our appetite to connect with nature.
This hungry audience is driving rapid growth of UC Agriculture and Natural Resources' California Naturalist Program. Established programs such as those offered by Pasadena City College, the Santa Barbara Botanic Garden, and the Tejon Ranch Conservancy are being joined by new and developing partners. Mountains Recreation and Conservation Authority manages land in both the Santa Monica Mountains and downtown Los Angeles. MRCA incorporated the CalNat curriculum into a longer Bridge to Park Careers workforce training program, resulting in the hiring of a cadre of new rangers well-versed in California natural history.
The University of Southern California Sea Grant program and the LA Conservation Corps SEA Lab teamed up to expose young adults from underserved communities to the coastal ecosystems of Southern California and potential jobs in the environmental field. The Dominguez Rancho Adobe Museum brings together California's rich cultural and natural histories in the heart of south Los Angeles County. Additional CalNat programs will soon be popping up in Cambria, Carlsbad, Riverside, Ojai, and Big Bear, and we're working to develop partnerships in San Diego and Orange Counties and along the L.A. River.
The CalNat curriculum highlights the incredible diversity of our state; the California Floristic Province is considered one of the 25 global biodiversity hotspots. This designation means that the region is home to a huge number of endemic species (those found nowhere else), but also that it shows an alarmingly high degree of habitat loss. Our mild Mediterranean climate and varying topography contribute to a diversity of species, but these are also attractive features to humans.
The 10 counties that define Southern California cover only a third of the state geographically, but they hold nearly two-thirds of the population, more than 22 million people. What an amazing pool of potential naturalists! And in neat symmetry with our diversity in geology and biology, perhaps no place in California exemplifies demographic diversity like Los Angeles. As our program expands, especially in the southern part of the state, CalNat is placing great emphasis on bringing our approach of “stewardship through discovery and action” to participants from a broad range of backgrounds.
But interpreting nature in Southern California holds unique challenges. In this arid land, agriculture and urban residents fight fiercely over scarce water (much of it imported from elsewhere), an even more contentious resource in our current drought conditions. And fire, though common throughout the state, is a particularly prickly topic in a region with so many homes.
Urban ecology is an emerging science built around the complexity of survival pressures and species interactions in human-impacted environments. In Southern California, dense human populations live cheek-by-jowl with coyotes, raccoons, rattlesnakes, bears, and mountain lions, and our habits and infrastructure influence their movements. Human development often fragments natural habitats, creating isolated islands that may not support viable populations of native species and may favor invasions by non-natives. As these environments lose functionality, we lose important “ecosystem services,” such as flood buffering by coastal wetlands.
So it's all the more important that Southern Californians take a greater interest in understanding and shaping our place in the natural world. If we can forge meaningful connections with the natural resources in the places we live, we can learn to protect those resources. This is already starting to happen, with initiatives like L.A.'s Sustainable City pLAn, the new San Gabriel Mountains National Monument, and countless Internet blogs about local hiking trails, not to mention plenty of conservation organizations that have operated in Southern California for years and often partner with CalNat to offer courses.
In 2014, nearly 200 California Naturalists from partner organizations throughout the state came together in Asilomar for a conference to appreciate our natural resources and to celebrate each others efforts in habitat restoration, citizen science, and interpretation. But our CalNat community has grown immensely, and we expect an even greater number to join us for field trips, lectures, trainings, and fun when we convene again in 2016, this time in Southern California. In the meantime, CalNat courses will continue to spring up all over the Southland, so those 22 million people won't have to fight traffic to find a class, and some nature, close to home.
- Author: Faith Kearns
Reposted from the Confluence, Blog of the California Institute for Water Resources
When we think water in California, we tend to think big: the Sacramento River, the American, the Delta. But, the state is also filled with small headwater streams that can be particularly easy to overlook when, during the state's dry summers, they start to resemble a series of pools rather than flowing creeks. Adding insult to injury is a longstanding view that the fish and insect communities in these intermittent streams will be less diverse than those found in the larger rivers they run into.
It is against this backdrop that scientists at the University of California, Berkeley, with support from the California Institute for Water Resources, set out to study some small creeks in the northern part of the state. They have been both surprised and excited by the diversity they are encountering. For example, at John West Fork in Marin County, they observed California giant salamanders, California newts, and Pacific chorus frogs, along with imperiled steelhead trout and coho salmon. In nearby Pine Gulch, they have observed a similar suite (minus the coho salmon), including several pools supporting older steelhead trout. The presence of these larger animals is an encouraging sign of resilience. They also found an abundant and diverse range of small invertebrates like mayflies, stoneflies, caddisflies—insects that are an important part of the food chain.
“These are small streams that lack flow for part or most of the year, yet they are totally filled with life. Understanding how these tiny little aquatic organisms manage to navigate this crazy and variable landscape, and thrive in conditions that most species would find very challenging, is really cool,” says project researcher Michael Bogan.
This finding is a great reward for difficult field work in a setting where streams can go from several months of dryness to raging flood waters with a single storm. “There's a lot of slogging up and down stream channels, crawling over downed trees & logs, sliding on wet rocks, and avoiding poison oak and stinging nettle,” says Bogan, though you mostly get the sense that he doesn't mind.
“In the long run, it's really exciting to think about how we can use this understanding of species ecology to inform water resource management and maximize our ability to support aquatic biodiversity and mindful agriculture and water use. In many situations, I do believe we can have the best of both worlds,” says Bogan.
The full study results are in: Bogan, Michael T., Jason L. Hwan, and Stephanie M. Carlson. In Press. High aquatic biodiversity in an intermittent coastal headwater stream at Golden Gate National Recreation Area, California. Northwest Science. Contact email@example.com for a pre-press copy.
This research was supported in part through a grant to Principal Investigator Stephanie Carlson at the University of California, Berkeley from the California Institute for Water Resources in the University of California's Division of Agriculture and Natural Resources.
- Author: Jeannette Warnert
Responding to the giant fire that burned 39 homes and 70,000 acres in the Clear Lake area, Warren Olney of KCRW's Which Way LA asked a UC Agriculture and Natural Resources (UC ANR) fire expert in Southern California, "Could it happen here?"
"It happens here all the time," said Tom Scott, wildlife and urban interface UC ANR Cooperative Extension specialist in the Department of Environmental Science, Policy and Management at UC Berkeley. (Scott is based at UC Riverside.)
He said of the 50 major fires recorded on the CalFire website, 30 were in Southern California. "It will probably happen again."
Media outlets are reporting that the Rocky Fire in Northern California is burning so hot, it is creating its own weather. Scott said the phenomenon is less likely to occur in Southern California fires.
"A lot of times our fires are coupled with Santa Ana winds," he said. "You don't necessarily see the fire creating its own wind because winds are already blowing 50 or 60 miles per hour."
One thing that can lead to particularly hot fires in the LA area is the lack of summer rain.
"This creates a very dry environment in the summertime," Scott said. "Plants can dry down to a point where they ... are very low moisture, which makes them very flammable. The other thing is, our plants don't decompose. We have a lot of biomass hanging around for a long time, sometimes centuries. When that burns, there's a tremendous amount of fuel and it causes hot and quick-moving fires."
Clearing a defensible zone around homes in fire-prone areas is one way to reduce the risk that a house will burn down. But it takes a long-term concerted effort to manage the landscape to prevent fires from becoming major conflagrations that roar from the mountains to the sea, Scott said.
"One of the things that a lot of people imagine," he said, "is where we can get back to a point where the landscape has fires that are smaller, at a time (of year) when it's not as hot and we don't have Santa Ana winds."
In the meantime, people in fire-prone areas may consider putting their irreplaceable valuables in storage from April to November, he said.
- Author: Jeannette Warnert
Northern California's Rocky Fire is roaring through shrublands that have no previous recorded history of wildfires, reported Kirk Siegler on All Things Considered. It has already burned 65,000 acres and is 12 percent contained, according to CalFire's Incident Report.
The area has been protected from fire for decades, primed for the type of catastrophic blaze California officials have been predicting.
"We've got miles and miles of contiguous chaparral vegetation and literally there are no breaks in the vegetation," Giusti said. "It's extremely steep and, in many cases, it's a roadless area."
Four years of drought has left the vegetation bone dry.
'When these fires get to an intensity we've seen, because of the fuel loading, because of fire suppression for the last 50 or 60 years, it allows the plant communities to get so dense, so thick and so expansive that, once a fire starts, it's beyond the capabilities of human control," Guisti said.
Reposted from the UCANR Green blog:
“There are two factors that help fires spread - winds and topography,” explained Scott L. Stephens, a professor of fire science in the Department of Environmental Science, Policy and Management at UC Berkeley, in Scientific American. “The thing about wind is, it can change so quickly and the fire will change with it — it can happen in 15 seconds,” said Stephens, who is also co-director of the Center for Fire Research and Outreach at UC Berkeley.
Wildfires are unpredictable, but there is much that residents of fire-prone areas can do to keep their families, homes and pets safe. UC Agriculture and Natural Resources has many online resources for homeowners and landowners in English and in Spanish for dealing with fire.
Protecting homes from fire
To protect houses in the wildland-urban interface from fire, homeowners should start with fire-resistant building materials and architectural features. The Center for Fire Research and Outreach at UC Berkeley has a toolkit for homeowners to assess their vulnerability to fire and offers advice for mitigating fire risk.
On the Sustainable and Fire Safe Landscapes website, Sabrina Drill, UC ANR Cooperative Extension natural resources advisor for Los Angeles and Ventura counties, gives tips for creatingdefensible space around the house. She also provides suggestions for designing a landscape around the home that reduce risk of fire spreading from plants to the structure.
Protecting animals from fire
The School of Veterinary Medicine at UC Davis offers resources for preparing a plan for horses, livestock and pets in case of wildfire or other disaster. A disaster preparedness plan would include things like transportation for evacuating the animals and emergency shelter.
What to do after a fire
If your home is burned, the Center for Fire Research and Outreach has a list of resources and things to do after a fire, including contacting a local relief organization to help with housing, food and other essentials. Before re-entering the home or site, the center recommends checking with the fire department to ensure it is safe to do so.
Revegetating the site
In oak woodlands, wildfires are an ecologically important process. Fire may actually help sprouting oaks survive by eliminating competing plants and creating a more favorable seedbed for acorns to germinate, and reducing the habitat of wildlife species that eat acorns or seedlings, according to Doug McCreary, UC ANR Cooperative Extension advisor emeritus.
Wildfire in an oak woodland can kill some trees outright and leave others with burn damage that may or may not eventually kill them. UC Cooperative Extension has developed a quick method for assessing the extent of burn damage and the likelihood that an affected tree will survive. Instructions can be downloaded for free at http://anrcatalog.ucdavis.edu/Items/8445.aspx
For forest landowners, UC ANR has “Recovering from Wildfire,” a guide that covers how to protect land from erosion damage, where to get help and financial assistance, how to manage salvage harvesting, and how to help the forest recover from wildfire.
UC ANR fire experts work with the California Fire Science Consortium to integrate science into sound fire prevention programs.
In the Lake Tahoe region, UC ANR Cooperative Extension advisor Susie Kocher collaborates with University of Nevada Cooperative Extension and Tahoe Basin fire agencies on a community education project called Living with Fire. Together they provide information for Lake Tahoe communities to prepare for wildfire. Many of the recommendations could apply to any community.