Showing posts with label Environment. Show all posts
Showing posts with label Environment. Show all posts

Sunday, February 9, 2014

Salamander Bucket Brigade

Why do salamanders cross the road? Sex, of course. On the first rainy nights of the winter season, California Tiger Salamanders leave their dens (often old gopher tunnels), and meander to nearby ponds where breeding occurs. Near my home here in Sonoma County California, a population of this federally listed endangered specie is faced with a mortal challenge common to many animals. A busy paved road was established between the fields where they live, and the vernal pools where they breed. Luckily for them, there is a community of conservationists who go to great lengths to help the nocturnal amphibians cross the street.
California tiger salamander crossing a busy Sonoma County road in the near Cotati, California
Yesterday evening, while flash flood warnings were in effect and most folks were at home watching the Sochi Olympic Games, a group of concerned citizens donned reflective vests and walked the shoulders of Stoney Point Road looking for salamanders. Carrying buckets, flashlights, and GPS devices, the searchers pick up specimens, document the location, then carry them across the road to continue on their journey without being ground into the asphalt. Normally the peak of this activity would have happened several months ago, but with the drought of 2013/14, the salamanders were on standby until the rain finally arrived and the ponds filled with water. Data collected is used to establish information about population density that may be used to help protect the US Fish and Wildlife Service's 72,000 acre Sonoma County salamander protection zone, and to help de-list the specie from the endangered list once populations increase.
Students from Sonoma State University search for endangered salamanders in pouring rain along Stony Point Road near Cotati, California. 
Protection of the habitat in which the Sonoma County population of Tiger Salamanders lives has been a hot button topic between developers, agriculture, and environmentalists for years. Habitat protection has been an expensive source of litigation that has stalled the development of, among other things, a major casino, a local rock quarry, and expansion of the Sonoma County Airport.
Students from Sonoma State University document California Tiger Salamanders in pouring rain. 
In 2011 a series of low fences was erected at the Stony Point Road site to guide the eight inch long speckled amphibians into specially built tunnels which allow them to safely cross back and forth under the road. The fence and tunnel system seems to be working pretty well, yet because there are still an good number of tiger salamanders killed each rainy night, volunteers show up to safeguard the crossing. (Click here for more info about the tunnels.)
California Tiger Salamander in bucket prior to release.
According to a USFWS proposal: "In Sonoma County, the California tiger salamander is imperiled by a variety of factors including habitat destruction, degradation, and fragmentation due to urban development, hybridization with non-native salamanders, inadequate regulatory mechanisms, disease, and pesticide drift."  

California Tiger Salamander being released into the wild.

If you'd like learn more about this topic, here are a few links:
http://www.fws.gov/sacramento/es/Recovery-Planning/Santa-Rosa/es_recovery_santa-rosa-conservation.htm
http://www.biologicaldiversity.org/species/amphibians/California_tiger_salamander/
http://www.californiaherps.com/salamanders/pages/a.californiense.html

-Jerry Dodrill

Friday, September 16, 2011

Red Tide

A few weeks ago I was driving up the grade on Highway 1 north of Jenner on the Sonoma Coast. Just before dropping down toward Fort Ross the morning fog broke away and I was aghast at the sight of the ocean. It looked like a biblical prophecy had been fulfilled; the water had turned to blood.
At the first chance I swerved into a pull out and got out the camera. Was it a major oil spill like the Deepwater Horizon? No, it was the most extensive red tide ever seen on the Sonoma Coast, and its effect on the salt water ecosystem has been devestating. 

A red tide is a harmful algal bloom of dinoflagellate plankton that occurs when ocean conditions are warm and calm. It can contain a neurotoxin that poisons, suffocates and kills shell fish. This same little plankton also causes a wonderful display of bioluminescence that I photographed last november. While red tides are not uncommon, some sources suggest that this year's El Nino event, warming sea water temperatures, fertilizers, and pollution may have contributed to severity of the current event.  
Within a week vast numbers of red abalone, mussels, sea urchins, sea stars and other invertebrates began washing up on Sonoma County shorelines. The major die-off is like nothing ever seen here and yesterday prompted the California Department of Fish and Game to enact an emergency action to close the 2011 abalone fishing season. 
 

Yesterday, September 15, I returned to Salt Point State Park, and walked cove after cove of rugged shoreline. Normally I am excited to find a single perfectly shaped shell on the beach, but there is no joy in discovering large mounds of skeletons - the bones of our delicate oceanic neighbors. 

For more information visit the Department of Fish and Game website.
© 2011 Jerry Dodrill Photography

Tuesday, November 23, 2010

Bioluminescence


For years I’ve heard unbelievable stories about people’s surreal night time experiences in the ocean with glowing plankton blooms, but until recently I’d never seen it myself. The tip off came from Ellen Cruz, a friend from Bodega Bay who sent a note about an experience she’d just had on the coast:

...the ocean was illuminated as if under a black light...so awesome, cannot describe in words...no need to drop acid on this one...every white particle of wave was iridescent, florescent, glowing like you can't believe...step on the sand and your footprint glows and sparkles... there were banks of waves coming in, white caps in the distance just glowed, and when the waves connected it was elongated strips of fluorescent green stripes across the water... whew...

This strange oceanic occurrence is likely the root of ghost stories told by early sailors who saw the mysterious green fire in the water but failed to comprehend what they were seeing. Documented as far back as 500 B.C., most bioluminescent light occurs in tiny plants called dinoflagellates which live in the sea and gain energy from the photosynthesis of sunlight. In darkness they emit a blue light in response to movement within the water. The intensity of the light peaks about two hours after dark and is simply amazing to watch. During the day they turn red and can be the source of the neurotoxin that poisons shell fish during Red Tides.

After receiving Ellen’s note, and being somewhat fascinated by natural optical phenomena, my mind immediately began pre-visualizing how I could make an interesting photograph. I often try to imagine best-case situations that might occur in nature. The trick is to carefully consider the conditions which would be necessary for a scenario to occur and then consciously reverse engineer it and attempt to put yourself on location at just the right time while being prepared to capture the moment. Something magical often ends up happening, even if it is somewhat different than what you had imagined.

As I pondered the complexity of making an evocative image of the psychedelic tides I felt that the images would look very alien if there wasn’t an earthly land form with which the viewer can easily identify. I started piecing together two ideas that I thought I could achieve in the same night. I’d seen the first sliver of a moon the night before, just after sunset, and knew that the next day it would be about fifty minutes higher in the sky. So I wanted to first make an image of the crescent moon setting at twilight above the breakers and Arched Rock near Jenner. The second image I was visualizing was a long exposure at the cusp of night where I would have just enough light to see the arch, and enough darkness for the dinoflagellates to show up in the water.

I checked the wunderground.com weather satellite which showed crystal clear skies, then double checked the angle of the moon relative to the arch by using a very useful software for such things called The Photographer’s Ephemeris. All the elements seemed to align and it looked like a promising evening.
I pulled up at Goat Rock Beach in Sonoma Coast State Park right about sunset, (which-oops!- is when the Park closes), geared up in rubber boots and wind gear and headed south down Blind Beach in gorgeous light that I would normally have been shooting. This time I was on a mission for something more mysterious than a sunset but at one point I did stop and made a few exposures of boney rocks protruding from the sand with crazy beams of light coming over the horizon. This was an early and unexpected bonus shot. As the light diminished I came to where the convergence of the setting moon and the sea arch were just perfect.
The first set of images were exactly what I expected. In years past I’d made similar images here with the full moon setting at sunrise into the Earth’s shadow. What I didn’t expect this time is that my camera’s sensor was picking up the Milky Way directly above the Arch! This added a layer of intrigue to the image that was far beyond what I’d imagined. Soon the starry night was fully visible to the naked eye.

If the moon had been larger or higher I believe its light would have polluted the clear, cold night sky and blown out the reflection in the water. But it was just slight enough that the relative contrast between the starlight and reflections fell into a range which could be handled if I was careful. But it was the bioluminescence that was most incredible. Each waved rolled in looking like a million neon glow sticks had been dumped into them. The blue-green light shot across the breakers as they crashed, the more wave energy released, the more light emitted. The backwash on the beach left momentary trails of light which resembled a million little galaxies.
I was in “the zone” watching wave sets, adjusting exposures as it got darker and darker, moving south down the beach as the moon traversed to the north, trying to keep my juxtaposition with Arched Rock in alignment. It was a bit ridiculous to realize a shot like this had come together: crescent moon shining through the arch under the Milky Way with the glowing ocean. Then as if in a nod to affirm all was okay in the universe, I watched in awe as a brilliant shooting star streaked across the sky above the arch while I had the shutter open. All the while I was very aware that I should not have parked my car in the heavily patrolled parking lot.

The moon was finally setting so I packed and hiked across the beach toward the car, arriving just as two park rangers stepped out of their cruiser with spot lights on. “Hello!” I called out of the darkness in attempt to not get myself Tazed as I stepped into the blinding beams with a big tripod on my shoulder. I received the full lecture from them (the park closes at sunset...we don’t want to have to come looking for you...) and apologized sheepishly. They wanted to know what I was doing out there. Still buzzing from an incredible experience, I pulled out the camera and offered to show them. The three of us huddled in the wind with our heads close to the back of my Nikon’s LCD and looked through the entire image set frame by frame while dispatch ran my plates and ID. The officers have one of the best office views in the state out their front windshield and were excited to see my photographic interpretation of what they see every day. As it turns out we share mutual friends and a deep connection for preserving California’s wild coast. I didn’t get a ticket that night. Instead I walked away with a couple of new friends, some images with which I’m really happy, and the good info on where to park the car for my next outing.

-Jerry Dodrill
Sebastopol, CA

More info:
Sonoma Coast State Park: http://www.parks.ca.gov/?page_id=451