Why are there so many butterflies around all of a sudden?

UC Berkeley Ph.D. Candidate Ryan Hill explains the sudden appearance of butterflies in the Sierras every spring.

Copyright: 2007, UC Regents

04:30

Watch on YouTube [below], or download a higher-res version here: Mac [.mov-9.6MB]

A Winter Visit to Sagehen.

Sagehen Creek Field Station is a fully functional winter facility, even though a few things about access are a little different than in the summer season. Watch this video to get a tour of Sagehen in the winter.

Update, 2018: while this video is still quite explanatory and accurate, there have been some important changes at Sagehen.

The climate is shifting. Some years there is little or no snow at the station elevation. We do still get monster snow years, though, so you can't know for sure in advance.

The road is now kept open with a large snowcat, so there are very few days when it's not possible to drive to the facilities with a 2WD vehicle. High clearance helps, but is not mandatory. You should remain flexible in your scheduling, however! If you absolutely must get out in the morning after a storm for a flight, a meeting, or something else, you should plan ahead and leave your vehicle at the highway before the storm hits.

The Outdoor Meeting area in the Upper Camp is now covered with a permanent roof, so it's more useful in the shoulder seasons, or when it rains.

The Library is no longer a computer and GIS lab. It's just a meeting space, now that most people use and bring laptops.

We did add the 3 tall weather towers Jeff mentioned; we also remodeled and updated the Upper Bathhouse and many of the other spaces, but we did not build the Master Plan.

And we lost Buster and Nut, the cats :( Buster vanished, and Nut got old.

00:11:56

Television news coverage of Sagehen.

These videos are the KGO-TV segments about Sagehen that ran recently on the Bay Area ABC affiliate, apparently the largest broadcast television market in the country.

"The new Sagehen Experimental Forest." 03:33
Read article.


"Bear research at Sagehen." 03:26
Read article.


"SPLATs for Sierra forest fire management." 03:24
Read article.

2006 A.R.C. Program slideshow

See an animated slide show of pics from this summer's Adventure-Risk-Challenge literacy program.

Want more information about Sagehen's A.R.C. outreach program? Try our podcast or the A.R.C. web page where you'll also find examples of student writing & science projects.

00:08:18 [39 MB]

Conservation & Research Agreement signed for the North Fork of the American River

On September 26, 2006, a consortium of land owners & managers including: the North Fork Association, Chickering Partnership, USDA Forest Service Tahoe National Forest, US Forest Service Pacific Southwest Research Station & Regents of the University of California signed a Conservation and Research Agreement (with introductory letter) addressing future cooperative management of the approximately 19,670 acres of public & private lands in this watershed.

This agreement creates a common management vision for the headwaters of a unique watershed that contains many remarkable features, including a population of mountain yellow-legged frogs, diverse botany & the largest stand of California old growth forest outside of the National Park system.

More info about CSFRS.

See a brief video preview of the area. 00:17 -- for PC [.wmv-2.75M] | for Mac [.mp4-639K]

Sagehen Video thumbnail archive

This post automatically updates itself periodically to show thumbnails of every video on the Sagehen v-log, even the ones no longer visible on the main page. Click on a thumbnail to go to the video.

Or use this link to see a page with every Sagehen video we have, no matter whether it's hosted on our server, on YouTube, or on Vimeo.



Video archive by Mefeedia

Pirates of Sagehen Basin!

Ant researcher, photographer & author Mark Moffett gets interested in Sagehen's slave-raiding ants. Why do the slaves put up with it? Same reason people do--because they don't know any better. They hatch out into the red ant nest & just assume that's where they belong.

Slave-making has evolved in ants nine separate times, so it apparently works.

Polyergus breviceps are obligate social parasites, meaning that they simply can't live without their slaves: they have lost the ability to dig tunnels, gather food, care for their babies. All they do is hang around, being taken care of until it's time to go out on another raid.

The video shows Polyergus breviceps [red ants] stealing brood [eggs & pupae] from nests of the host species, Formica argentea [black ants].

Many stages of a raid are shown: the nest before a raid with no red ants apparent [they don't work except to raid]; the initial red scout heading out, the red column advancing; winged red reproducers accompanying the column & mating along the way; black ants trying to block the entrances to their home; red ants unblocking the entrance, then taking brood from the target nest; racing back to the home nest where the black ants take over care & sometimes carry or drag the exhausted red ants.

The new black brood will hatch out & acquire the scent of the new home nest, then go right to work taking care of the red queen's eggs.

Meanwhile, the mated reproducers will lose their wings & attempt to find a black ant nest then kill its black queen, taking over egg laying duties & converting the nest to a red ant nest with black slaves. There will be no more black ant eggs produced in these attacked nests.

A little creepy, eh?



Download this short ants reel here.

Sagehen Summer Speaker Series #10: Plant Communication

7-29-06: Professor Rick Karban of UC Davis keeps the crowd enrapt with discussion of his controversial research showing that plants exchange information with each other in response to predators (but you don't have to call it "communication" if that idea bothers you!).

00:49:40 [34.5 MB] or watch below...

Plant Communication from F. Felix on Vimeo.

Sagehen Experimental Forest Dedication Ceremony, June 24, 2006

The Sagehen Experimental Forest Dedication ceremony was held at Sagehen Creek Field Station on June 24, 2006. A number of important people from the Forest Service and UC Berkeley spoke at this historic occasion, making a number of interesting observations about the purpose and potential of the Sagehen Experimental Forest. Watch.
00:52:40 [62.8 MB]

Read about the Sagehen Experimental Forest dedication here.

Bear research revs up in the Sagehen Experimental Forest.

California Dept. of Fish & Game began a black bear project in the basin this season. Researcher Jennapher Miller and assistants Deniz Kuzio, Caitlin Kroeger, Harry Reynolds, and Charlie Robbins have been scouting out the bear habitat and putting out lasso traps in likely areas. Yesterday, they finally caught one--very exciting!

You can read the abstract for this project on our Calendar page.

Video tour of the Sagehen web-site.

The Sagehen web-site is getting pretty big--over 15,000 files now if you count everything. But you can still get to everything you need from our home page links in only two clicks or less.

Look for the things everybody needs like a map & directions to the station, visit requirements, links to waivers, etc. on our home page in the main text.

If you're having problems finding what you need, open up a browser window to our web-site, then follow along as you watch this video [2.3 MB] to find the way to some of the most useful, popular pages & documents.

Get Sagehen Videos!

This is the new Sagehen Creek Field Station page where you can download video files. These may include helpful reference tools for learning how to navigate our web-site or enter your research metadata; you will also soon find video about science research & education projects underway at the station.

Don't forget that you can also download or listen to our radio podcast.