Yosemite Nature Notes extra: Time lapse of people visiting

September 4, 2011

Among other things one might observe from this film, one might note that Yosemite National Park’s beauty is so great that it looks good from almost any angle, even with tourists plastered all over it.

This was released between Yosemite Nature Notes #14 and #15, and I find no other description.  This remains a wonderful series showing off the geography and natural phenomena of Yosemite.  I wish there were similar programs for Yellowstone, Glacier, Denali, Grand Canyon, Zion, Bryce, Big Bend, Great Smoky Mountains, and for the Adirondack State Park in New York, among many others.


Red dragonfly in Colorado Bend State Park, Texas

August 9, 2011

Dragon flies are not my area of expertise:  Can anyone identify this beauty?

Red Dragonfly in Colorado Bend State Park, Texas (photo by Ed Darrell)

Red dragonfly in Colorado Bend State Park, Texas - photo by Ed Darrell

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Kate wrote in to say it’s probably Libella saturata.  From other photos I’ve found, that seems a good, accurate identification.  Citizens of Arizona have been urged to help identify dragon flies, odonates,  in their state, and this site explains how to do it with a camera and a notepad — with a fine picture of a Libella saturata for illustration.  And, as a reward to Kate and yourself, you may want to hop over to her blog, The Radula, and see what she’s got to look at.


Hopewell Rocks and 45-foot tides at the Bay of Fundy

August 4, 2011

Great time-lapse video of the tides at Hopewell Rocks, Bay of Fundy, New Brunswick.

Teachers, can you get a decent geography warm-up with this video?  Every high school kid should know about the Bay of Fundy, one of nature’s greater phenomena.

More: 

Another time-lapse video of the tides at Fundy, taken at Halls Harbour, a different perspective:

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Fresh from the garden: Bat faced cuphea

July 10, 2011

Bat-faced cuphea in Kathryn's garden

On a pedestal? Kathryn's potted bat-faced cuphea stands out when the mid-morning sun bathes it, but the yard in back still hovers in the shade of the live oak. Horticultural design by Kathryn Knowles; photo by Ed Darrell

Kathryn’s bat faced cuphea (Cuphea llavea) has graced our garden for several years with this particular plant, or its seedlings.  It attracts butterflies and hummingbirds with regularity.

It gets its name because each blossom resembles the face of a tiny bat.

Bat faced cuphea in Kathryn's garden, IMGP5294

Each blossom of bat faced cuphea resembles the face of a bat.


Full Moon, waterfalls in Yosemite, modern cameras: Voila! Moonbows!

July 7, 2011

Dick Feynman taught in Rio de Janeiro for a while.  He was frustrated at the way Brazilian students of that day learned physics by rote, instead of in labs.  In a lecture he looked out from the classroom to the sun dancing on the waves of the Atlantic, and he realized it was a beautiful, brilliant demonstration of light refraction, the topic of the day.  Sadly, the students didn’t understand that the beauty before them was a physics problem.  (Was that story in Surely You’re Joking, Mr. Feynman,  or What Do You Care What Others Think?)

Here, a marriage of physics, moonlight, spring runoff over a cliff, and modern photography, in Yosemite.  If you don’t gasp, call your physician and find a new sensei:

(Programs and maintenance of this park are threatened by Republican budget writers, BTW.)


Cicada killers, 2011 edition

July 6, 2011

It’s slower population growth than in the past, but earlier, too.

In earlier years we’ve had cicada killer wasps — cicada hawks, in some parlance — as early as July 7.  Rains fell all spring in 2010, which discouraged the emergence of cicadas and their predators.  First certified sighting in our backyard did not occur until July 18.

Cicada Killer, with cicada - photo by Ronald F. Billings, Texas Forest Service, Bugwood.org

Cicada Killer, with cicada - photo by Ronald F. Billings, Texas Forest Service, Bugwood.org, via University of Delaware Cooperative Extension

We had modified a planter, and that may have killed some of the larvae.  Generally 2010 was a slow year for the large wasps.  My guess is that they were less active locally because the ground remained wet through July and into August.  I still get e-mails asking about how to get rid of them, and I still recommend watering the spots you want them to leave.  The females sting and paralyze a cicada, then plant that cicada in a tunnel underground with one wasp egg.  The young wasp hatches and feeds on the cicada, emerging usually the next summer to carry on the cycle (in a long summer, there may be a couple of hatchings, I imagine).  Females do not like to tunnel in wet ground, partly because it collapses on them, and I suspect wet ground is conducive to fungi and other pests that kill the eggs or hatchlings. Our wet weather kept them away last year.

I waited to say anything this year because I wanted more, but we saw the first cicada killer wasps this year on June 27, 2011, the earliest date we recorded here.  I had hoped to get a good photo, but that hasn’t happened yet.

Down at Colorado Bend State Park, the cicada killers greeted our arrival, much to the panic of the little kids in the campsite next door.  They were happy to learn the wasps don’t aim to sting them, and the kids actually watched them at work.  One of the wasps reminded me of just how much they like dry ground — she kept tunneling into the fire pit, unused now because of the fire bans that cover 252 of Texas’s 254 counties.  Covering the holes, putting objects over the holes, nothing could dissuade her from using that site.  I hope for the sake of the larvae that they hatch soon, and get out, before someone builds a fire in the pit.  Some of the cicadas in that area hit 110 decibels at least, and they badly need the discipline of a force of cicada killers, if you ask me.

Prowling the yard this morning I found two more emergence holes.  The wasps leave a smaller hole than the cicadas, so I’m pretty sure they are back in force.

Nature, red in tooth and claw, the poets say.  Or in this case, moist in sting.

It’s summer.  By the weather, it’s late summer.   Hello, cicada killers, Sphecius speciosa.

Earlier at Millard Fillmore’s Bathtub:

More:


Watching the drought roll in at Colorado Bend State Park

July 6, 2011

It took me a couple of tries to figure it out — last week when I told people Kathryn and I were off to Colorado Bend State Park to spend time on the river, several people commented about how much cooler it would be there.

What?  West of Killeen about an hour, ten miles of dusty road outside of Bend, Texas (population 1,637), Colorado Bend is not cooler than Dallas.  It was over 100° F every day we were there, stayed well above 90° most  of the nights.

Kathryn Knowles checking wildflowers, Colorado River, Texas

Kathryn studied wildflowers at a spring at the side of the Colorado River during a break from kayaking; this spring's flow was reduced, but still moist enough to create a near-oasis.

Our well-wishers were geographically confused.  They thought we were headed to the Colorado River in Colorado, not the Colorado River in Texas, which is not the same river at all.  I didn’t bother to check the temperatures in Colorado, but one might be assured that it was cooler along the Colorado River in Colorado than it was along the Colorado River in Texas.

It was a return trip.  We stumbled into the park 16 years ago with the kids, for just an afternoon visit.  The dipping pools  in the canyon fed by Spicewood Springs captivated us.  It took a while to get back, and then the kids were off doing their own thing.

So, just a quick weekend of hiking/camping/kayaking/soaking/stargazing/bird watching/botanical and geological study.   Park officials closed the bat caves to human traffic in hope of keeping White Nose Syndrome from the bats; we didn’t bother to sign up for the crawling cave tour through another.

Ed Darrell at Colorado Bend State Park, Texas

The author, still working to master that Go-Pro camera on the hat -- some spectacular shots, but I don't have the movie software to use it all; you know it's hot when SPF 75 sunscreen is not enough.

What did we see?  Drought has a firm grip on Texas, especially in the Hill Country, especially outside of Dallas.  The Colorado River  is mostly spring fed; many of the springs are dry.  No water significant water flowed through the park while we  were there — kayak put-ins have been reduced to the downriver-most ramp, and the bottom of the boat launch ramp is three feet above water.  Gorman Falls attracts visitors and scientists, but the springs feeding it are about spent this year — just a few trickles came over the cliff usually completely inundated with mineral-laden waters.

Drought produces odd things.  The forest canopy around the park — and through most of the Hill Country we saw — is splattered with the gray wood of dead trees, many of which at least leafed out earlier this spring.  The loss to forests is astonishing.  Deer don’t breed well in droughts; deer around the campsites boldly challenge campers for access to grasses they’d ignore in other seasons.  One ranger said he hadn’t seen more than about three fawns from this past spring, a 75% to 90% reduction in deer young (Eastern White Tail, the little guys).  Raccoons are aggressively seeking food from humans, tearing into tents and challenging campers for food they can smell (lock your food in the car!).  Colorado Bend is famous for songbirds, including the endangered Golden Cheeked Warbler, and the elusive, spectacular painted bunting.  But the most commonly-sighted birds this year are turkey vultures, dining on the young that didn’t make it healthy into the summer and won’t survive until fall.

Warming denialists’ claims of “not so bad a drought” ring out as dangerous, wild delusion.  (By actual measurement, Texas average rainfall the past nine months was 8.5 inches, the driest ever recorded in Texas, shattering the old record drought of 1917).

Great trip.  Kathryn’s menu planning was spectacular.  The old Coleman stove  — a quarter century old, now, with fuel almost that old — performed like a champ even without the maintenance it needs (later this week).  Other than the hot nights, it was stellar.

Stellar.  Yeah.  Stars were grand.  It was New Moon, a happy accident.  A topic for another post, later.  Think, “Iridium.”

So posting was slow over the weekend.  How far out in the Hill Country were we?  Neither one of us could get a bar on our phones.  We were so far out the Verizon Wireless guy was using smoke signals.

Thoreau was right, you know.


Dragon fly on a Saturday walk in the park

June 28, 2011

Lions Park in Duncanville, Texas, to be more precise.  The dragon fly appears to me to be Neurothemis tullia, a Pied Paddy Skimmer, though I believe that is considered an Asian species.  [But see note at the end of the post.]

Closely related?   An exotic introduced to Texas?  Here we had cotton fields, not rice paddies.  The wings look like those of a Pied Paddy Skimmer, but most of the photos I’ve found show a black body, and this one is definitely gray.  Hmmmm.

Dragon fly, Pied Paddy Skimmer, Neurothemis tullia - photo by Ed Darrell copyright 2011, use permitted with attribution

Dragon fly, Pied Paddy Skimmer, Neurothemis tullia - photo by Ed Darrell; copyright 2011, use permitted with attribution

Dragon flies look mean.  As a very young child I was terrified of them, growing up on the banks of the Snake River in Idaho.  My mother, a farm-raised girl, took me out for a walk among the diving, softly-humming aerobats, and explained they had no stingers, they ate other insects, and they seemed to like humans, if we’d watch them.  As we watched, she held out her hand and a dragon fly landed, as if to say, “Hello!  Listen to your mother.  She knows us.”

Dragon fly in Duncanville Lions Park, photo by Ed Darrell - use permitted with attribution

Dragon fly takes a higher vantage point. Is this species exotic in Texas?

Up Payson Canyon, in Utah, at Scout Lake I passed many early morning hours, and many noon siestas, in the reeds watching the dragon flies.  When we were in our canoes or rowboats they’d fly at us like rockets, appearing to think they were torpedo planes, then fly up, or right or left, at the last possible second, to avoid colliding with our craft.  Through July they’d fly tandem, mating.  This intrigued Scouts, and delighted them beyond measure when the nature merit badge counselor explained they were having sex.  Red ones, blue ones, yellow, brown and black ones.  Big ones, little ones.

Shortly after we moved to Texas, we discovered that a swarm of dragon flies probably meant a local colony of fire ants was casting off females, to mate and start a new mound of exotic, stinging terror.  The dragon flies would catch and eat the queens-to-be.  I had to use a broom to shoo off a neighbor with a can of insecticide, trying to kill the dragon flies in their work to keep us safe and happy.  “But they look so mean,” she explained.

Judge no book by its cover (except Jaws); judge no insect by its eye apparel, or human eye appeal.

Dragon fly, Neurothemis Tullia (perhaps), Duncanville Lions Park, 6-25-2011 - Photo by Ed Darrell, use permitted with attribution

Pied Paddy Skimmer rests from hunting

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Update:  In comments below, Roused Bear wonders if this isn’t the Widow Skimmer, which is native to Texas.  That would make a lot more sense, wouldn’t it?  What do you think, Dear Reader:  Widow Skimmer, Libellula luctuosa?


Cool solar flare this week

June 9, 2011

Old Sol spoke out this week:  Huge solar flare on June 7.

For scientists, it was a cool deal — especially since the flair was on the side of the Sun facing us, and there were cameras of various types trained on the action.

But just watch:  The internet will light up with concerns about 2012, and those who deny warming occurs or that humans cause it, will find some reason to claim the solar flare shows that Al Gore is fat and Rachel Carson is a mass murderer, plus Darwin was the inspiration for Adolf Hitler.

If the Sun knew it would get such a reception, would it bother?

Take a look:

June 7, 2011 solar flare -- NASA/SDO

Still shot of the June 7, 2011 solar flare -- NASA/SDO via PopSci

Here’s a pixillated video of the event in UV at 304 Angstroms — it runs under 30 seconds, but the time covered is about two-and-a-half hours; from SOHO – SDO via TheSunToday.org:

Another view, again UV, but at 171 Angstroms:

Tip of the old scrub brush to PopSci.

Resources:


Yellowstone, Land to Life — a film to free from bondage

March 20, 2011

Yes, it’s a tease.  Drat.  Just a trailer for the film.

But how exquisite is just the trailer!

Yellowstone National Park Orientation Film (excerpt) from Northern Light Productions on Vimeo.

Northern Light Productions made the film for the “Canyon Visitor Education Center in Yellowstone National Park. The film offers a compelling overview of the ‘big picture’ geology that has shaped and continues to influence Yellowstone and its ecosystem.”

Big picture geology?  How about making this film available to schools to talk about geology, geography, and history?

Yellowstone National Park annually gets about three million visitors.  Yellowstone is one of those places that ever American should see — but at that rate, it would be more than 100 years before everybody gets there.

We need good, beautifully shot, well-produced, interesting films on American landmarks in the classroom.

How do we get this one freed for America’s kids, Yellowstone Park?


Firefall in Yosemite: Horsetail Fall’s spectacular February show

March 2, 2011

New program from Yosemite National Park’s “Nature Notes.”

This one has something to appeal to the heart of almost everybody:  Photos from Ansel Adams, photos from Galen Rowell, interviews with sons of each, discussion of the (properly) much-maligned old “firefall” of hot fire coals for tourists — and the story of the natural firefall one might see, if the conditions are right, and if one is in Yosemite in the right place, on the right days of February.

This video was produced by Steven M. Bumgardner, with extra camera help from Josh Helling.  Those guys do great work.  It features photographer Michael Frye, Michael Adams, Ansel Adams’ son, and Tony Rowell, the son of  Galen Rowell.


Frazil ice in Yosemite National Park

February 1, 2011


As long as you’re in Nevada, see Fly Geyser

December 24, 2010

Way more than half the geysers in the world are in Yellowstone National Park.  There’s another big cluster in Iceland, and then a few in California.

But there are stragglers throughout the world, including this spectacular, nearly-man-made thing in Nevada:  Fly Geyser.

Nevada's Fly Geyser, Wikimedia image

Nevada's Fly Geyser, Wikimedia image, from Jeremy C. Munns; it's on private land, not open for tourists. Have you ever heard about it?

Lots of photos of the geyser at Kuriositas, where I learned of the thing.

It’s on private land, on Fly Ranch (from which the geyser and a nearby reservoir get their names), but visible from a public road.  You can find it about 20 miles north of Gerlach, on former State Route 34 (now County CR34) – in Washoe County in the northwest of the state.  From Interstate 80, one would need to drive west from Winnemucca on Nevada State Road 49(?), or north from Wadsworth on state highway 447, to Gerlach.

Locals drilled a well at the site in 1916.  For more than 40 years the well produced water with no problem.  But in 1960, the well blew out.  Hypothesis is that the well passed through heated rocks that contained water, and this heated, pressurized water blew out the well casing.  The geyser has been erupting since 1960, building the impressive mineral mountain seen in the photo.

More:


Butterflies are free, to move about the country

October 24, 2010

Great mysteries of science, history and spirit call to us:  How do the monarch butterflies do it?

Monarch butterflies (Danaus plexippus) fly north from their enclave in Mexico every spring, stopping to lay eggs on milkweed plants.  After a migration of several hundred miles, that first group that left Mexico dies off.  Their offspring hatch in a few days, devour the milkweed, make a chrysalis, metamorphose into butterflies, then fly farther north, where they repeat their parents’ behavior:  Lay some eggs, and die.  Within three generations, they’ve spread north into Canada.

Kathryn's butterfly plantings, October 2010 - photo by Ed Darrell

Inviting the monarchs in: You can see how Kathryn worked to attract butterflies. In this photo, you can see the butterfly weed (a milkweed), red Turk's cap, and blue ageratum especially for the monarchs.

Then the fourth generation does something so strange and wonderful people can’t stop talking about it:  They fly back to Mexico, to the same trees their great-great-great grandparents left.  There they sip some nectar, get some water, and spend a lot of time hanging in great globs, huddling over the winter, to start life for generations of monarch butterflies the next spring.

Sometimes in Texas in October, we can see clouds of monarch butterflies winging south.  If we’re lucky, they stop to visit our backyards and gardens, and we might provide some water and nectar to urge them homeward.  Kathryn, of course, plants the stuff the monarchs like, to help them, and to give us a chance to see them.

Monarch habitat in Mexico is under severe stress and threat.  Late storms and early freezes decimated monarch populations over the last decade [yes, that’s the proper use of “decimated;” look it up].  Human plantings are more critical to the monarch butterflies than ever before.

Two years ago Kathryn and I spent a September morning outside the library at Lawrence University, in Appleton, Wisconsin, watching monarchs sip nectar from local flowers for their journey.  Those same butterflies — we hope — passed through Texas a couple of weeks later.

Two weeks ago . . . well, see for yourself:

Monarch butterfly on blue porterweed, Dallas, TX October 2010 - photo by Ed Darrell IMGP5343

A monarch butterfly feeds on blue porterweed in Kathryn's garden, October 2010 - photo by Ed Darrell

Monarch butterfly on blue porterweed, Dallas, October 20101 - photo by Ed Darrell IMGP5347

. . . we're here with the camera, little guy, just open up those wings, please . . .

Monarch  butterfly on blue porterweed, Dallas, Texas October 2010 - photo by Ed Darrell IMGP5345

That's it! Beautiful! Have a safe trip, and come back next spring, will you?

Resources, more:

Conoclinium coelestinum


Annals of DDT: Remembering Rachel Carson

October 8, 2010

From America.gov, the real story of Rachel Carson, in less than two minutes:

More: