Saturday, May 9, 2015
Identifying insects can be pretty easy in this modern age!
This morning I found several lovely moths on my porch.
I didn't know what they were, but they were striking enough that I knew I could find out just by using the power of the internet.
It may seem overwhelming to start to identify an insect if you have no idea what it is, but the internet is made for boneheads, so for these moths I googled an image search for, "yellow and black moth Sonoma." Its always a good idea to include a location when you're searching for insect IDs, believe me. County is a common piece of data recorded for biological collections. Lo, I scrolled through the first page of results and found a visual match from butterfliesandmoths.org, which suggested that this was Grammia ornata, the ornate tiger moth. Their map showed a lot of sightings from the bay area, which was encouraging.
But how could I be sure this wasn't some species that looked a lot like G. ornata, but wasn't? Some insects can look almost identical to each other (to the untrained eye) but still be different species. Since my moths looked so similar to the G. ornata in the picture, and since it was in the right locality, I figured that Grammia was probably a good guess for the genus. Butterfliesandmoths.org lets you search by scientific name (under "Learn -> Species Search") and I found about 30 different species in the Grammia genus. That's a lot of clicking to do, so instead I went over to Pacific Northwest Moths.
This is a great website for (you guessed it) butterfly and moth identification... if you live in the Pacific Northwest. However, there's often some overlap in ranges of insects between northern California and Oregon, and I really like how user-friendly this site is. One of the greatest aspects is the "Similar Species" feature for each entry. For G. ornata, two similar species were suggested: G. complicata (only found near the Salish Sea in Washington) and G. edwardsii, which is rare, but found in the vicinity of San Francisco. Well, that got my attention. The distinguishing characteristics were clearly spelled out, and one of them seemed easy enough for me to check: G. edwardsii has antennae that are pale at the base, whereas G. ornata antennae are dark all the way through. The likelihood of finding a rare species sitting on my porch - actually, three of them - is pretty small, but I wanted to be thorough, because you never know! This is how exciting things in entomology are discovered!
Since I had done a sketch of the moth, I knew I had paid pretty close attention to details like that, but I checked the moths that were still sitting on my porch, just to be sure. Sure enough, dark antennae.
The last website that I checked out is the one I usually go to first for insect ID, BugGuide.net. This site has a ton of photos submitted by pros and amateurs, and has a really clear way of showing the classification system for each taxa you're looking into.
Poking around into all of these sites - not just one - helped me feel confident that I had the right ID for these moths. Each site gives slightly different information for its entries, which is good for cross-checking, looking into location information, and in general putting the pieces together.
Why go through all the trouble to put a name to a moth? There's a lot of poetic things said about names, and honestly, I find most of them to be true when it comes to understanding the natural world. If you don't think it worth naming, it tends to slip by and be forgotten. If you can put a name to something, you make a place for it in your mind. You form a relationship with it. It becomes unique. You remember it. You understand it in way that you didn't before. You can recognize it when you see it again. And the value of that is that you now have another personal connection with some other small part of that big world out there. That big world gets a bit bigger, and you get a bit bigger, too.
<> Abner
Thursday, May 27, 2010
Species Highlight - Aquilegia formosa
Tuesday, May 4, 2010
All About Grouse
The male ruffed grouse beats his wings upon logs as part of a territorial display. Since it is early May, this male was probably looking for a mate. His ability to defend his log communicates his fitness, and therefore, his desirability as a mate, to females all over the area. Pictured here is a photograph of a female strutting along a road. Now, who wouldn't want to impress that lovely lady? She is looking perky because she doesn't know what to make of my truck.
According to the Cornell Lab of Ornithology website, allaboutbirds.net, both sexes of ruffed grouse mate with multiple partners, and the females raise young alone. The benefits to a male grouse are obvious; his genes are passed on to as many offspring as possible. But if one assumes a "normal", human model of mating biology (and why wouldn't one? We are, after all, humans!), then it is less obvious why a female bird would prefer to mate with many males. If the first male she mates with is most likely to fertilize her eggs, then what use are the rest of her mates?
It turns out that bird reproductive biology is rather different from mammalian reproductive biology. Many kinds of birds have evolved sperm storage tubules, which are basically holding tanks for sperm before they reach a female's egg. These tubules facilitate what is called passive sperm loss, in which sperm die at a constant rate over time. In fact, it is the last male she mates with who will receive the honor of fertilizing most of her eggs, since his sperm will be the most recent and thus, the most numerous. Of course, there are other factors which influence male success - the timing of mating relative to the development of the egg, and the viability and amount of each male's sperm.
It is still unclear how the female bird benefits from these multiple partnerships. Most research on the subject addresses species which pair-bond ("socially monogamous") and then copulate outside their pair-bond, not species in which females raise their young without paternal care, like grouse. Perhaps in socially monogamous species, a good caretaker male is not necessarily genetically desirable for a particular female. Thus, two males may be needed to play two different roles.
But for species like the grouse, all a female needs is a genetically desirable male - not a good caretaker, too. Perhaps behavioral studies will elucidate: if a female only mates with successively more desirable males, then her eggs will be fertilized by the latest, and thus, greatest, sperm she has found so far. Any previous matings retroactively become backup. However, I cannot find scientific literature discussing how, or if, female mate choice works in conjunction with sperm storage structures.
Who knew that bird sex was so complex? My eyes will be peeled for scientific developments in this area.
sources:
Peterson Field Guides: Western Birds.
Cornell Lab of Ornithology: Bird Songs of the Pacific Northwest (cd)
All About Birds: http://www.allaboutbirds.org/NetCommunity/Page.aspx?pid=1189
Northern Wilds: northernwilds.com
Birkhead, Tim R. Sperm Competition in Birds. 1998. Reviews of Reproduction 3, 123-129. (ror.reproduction-online.org/cgi/reprint/3/2/123.pdf)
Thursday, April 29, 2010
It's Still Winter Here...
Check out those adorable toes they are holding themselves up with.

In a beautiful patch of old-growth forest, we settled on the wet moss to watch a newt lumber like the slowest wind-up toy, like a dinosaur, through the undergrowth.

Looking up to 80-meter trees, I see white sleet hanging from the sky. It has been a strange winter this year - first an early thaw, then, after several days of warm sunshine, and shortly before I arrived, a snowstorm that has stayed, and stayed, and stayed. It will be interesting to compare this to other years - although since I have never been here for more than a few days at a time, I have no sense of normality.
Everything here is new to me! The chance to get to know this place on a more intimate level is something for which I will be thankful forever. Already I am learning to look at the world in a different way. <>
1. Peterson Field Guide to Mammals
Tuesday, April 27, 2010
Late Winter
Rain today, and snow up higher. Varied thrushes singing from the old hemlocks. Startled two deer going into the woods, footprints in the mud showing their haste.Then home – a door, a step, a light, and warmth – as if the house itself has been keeping for me.
Bucking up fallen logs across the road, my breath steams in front of me, as my clothes steam in the cold, as the saw steams as Jay melts it through red rotted Doug Fir.
Home, and curry powder on my potatoes, meat, onions. Sweet-spicy smell of my hearth.
Giving my thanks the best I can, bow drawn slowly across strings, I compose a
thrush-song on the fiddle. <>
Tuesday, April 20, 2010
Phenology
Phenology: I didn't know what the word meant until I had to apply for my current job. Even still, I didn't understand the full meaning of it until I began working here.Phenology is the study of the timing of periodic changes in biology, as they relate to climate. Migration, breeding, flowering, root growth and leaf growth, metamorphosis - all of these are studied by phenologists. The research I am helping with involves plants, insects, and songbirds - a nice collection of trophic levels that might show some measurable interaction. My job is to look at the plants, and to collect the insect traps. I thought that I would be measuring stem lengths with a little ruler, or counting leaves. In retrospect I was quite naive. And here I was with a college degree in biology!
Fading bloom of Coptis laciniata,
called "cut-leaved goldthread".
3,000 feet, and 5,000 feet. An interesting idea, based off of previous work in these woods, is that micro-climate may have a profound affect upon phenology. In an attempt to factor that variable into the experiment, each site has a temperature and photoperiod sensor, and all of the study plants are located within 30 meter radius of that sensor. At each site, there are about 50 individually tagged and numbered plants. Some of the studied plants include the little yellow violet, Douglas fir, vine maple, rhododendron, and trillium. The species to be studied have been chosen for their relative ubiquity among sites, their ease of studying, their supposed importance to the forest, and their time range of growth activity. For instance, Snowqueen blooms very early, allowing a measure taken in April to be more than just all 1's ("no bud activity"). Vine maple is found at almost every site. And Oregon grape, which was used in the study last year, has been dropped because of its seemingly random flower activity.
But the study of phenology is giving me something more than a page of numbers, even something more than the beginning of what is, hopefully, a long-term study. As I have been watching individual plants, visiting them at least once a week, making notes of their growth, I feel that I have become aware of a pattern of the forest that I have never truly understood, in two ways. The first is the timing - if you had asked me when maples put out their leaves, I would say, "springtime". But I would not have realized that Douglas fir put out pollen cones before new needles, or been able to tell you that trilliums turn purple before their petals wither. I would have no idea when huckleberries started flowering. The second is in details - I had never paid attention to the way that vine maple leaves emerge, first from their reddish buds, encased in a thin green sheath, and then, elongating, suddenly pop out of their stockings and spend several days unfolding to flatness.Above: vegetative buds of Douglas-fir, Pseudotsuga menziesii. The buds on the right are close to breaking open.
Many of the key attributes of the study can be simplified and applied to almost any backyard.
1. Identification of species
2. Comparison of different species
3. Note-taking
Those are the most important ideas, but there are a couple more that have helped me to really develop an understanding for what is going on throughout the area:
4. Comparison across elevation gradients
5. Multiple individuals of the same species
The future of these plants is entirely unknown to me, and I feel like I am unraveling a mystery - what will bud break look like? When will the flowers open? How will the rhododendron leaves unfold themselves? Only time will tell...
<>
Saturday, April 17, 2010
Welcome to the Woods!
This is Abner writing to you from deep in the Cascade Mountains. I have recently accepted a position here assisting with research, and I hope that as well as paying my bills, it will provide inspiration and insight into this small, yet vast, facet of the incredible ecosystem that we call Earth.

The Cascade Mountains reach from southern Canada to Northern California. As part of the Pacific Ring of Fire, which here consists of the Juan de Fuca plate subducting underneath the North American Plate, the range includes such notables as Lassen, Mt. Rainer, the Three Sisters, and Mt. Saint Helens, which last erupted (albeit, in a minor way) in 2006. My work, however, is not in these high eastern mountains, which are well-known for their dramatic size and incredible views. Instead, I am on the western slope of the Cascades, surrounded by a different sort of size scale that defies attempts to see much further than even 50 yards away. Here, watered by coastal rainstorms and fed by an intensely interconnected flow of nutrients, 500-year old forests boast 300-foot tall trees living intimately with an amazing diversity of life. Yet while it is the hemlock, Douglas fir, and redcedar that dominate the initial perspective and limit the view to what is immediately reachable, all it takes is a second glance to guess at the discoveries that might await an astute observer. And that often involves an even closer view - from, for example, 5 inches away.
At this scale, we may begin to understand what it is that has kept researchers from all the natural sciences studying this particular watershed for over 60 years. In seeking to understand the whole ecosystem, they must understand each part of it - and there are very many parts. If "the devil is in the details", then what a delightful devil must animate these deep, dark woods! Here there are over 500 species of vascular plants, matched by 500 species of non-vascular plants (mosses, lichens, and algaes), 180 different species of birds, 50 mammal species, 20 amphibians and reptiles, and over 3,200 invertebrates - a grand total of over 4,450 details! And yet, identifying them is only one step; understanding their ecology, their interactions, and the changes associated therewith, is another.
Not only do we seek to know the interactions among living organisms. It is the non-biotic factors that make up all of life - adenine and thymine, nitrogen and carbon, water, sunlight, and oxygen. How are living creatures influenced by genes, nutrients, and climate? The work I am participating in is phenological in nature: it is concerned with the timing of changes in development and behavior. And as I write, Schmuel is booking tickets for a conference which will augment understanding of how climate drives soil arthropod communities. Neither of us can photograph primary productivity, DNA, or photons, but we recognize that each organism we observe is a product, expression, and active participant in its ecosystem. I look forward to exploring this place. Welcome to the woods! <>
Monday, February 1, 2010
From the Monterey Bay



<>
Sunday, January 24, 2010
Evidence of Pleistocene Megafauna in Coastal Regions
Mammoth Rocks
The earth turns, the seasons change, and life on this planet responds to the fluxes of warmth and cooling. Pretend that the earth has metaphorically begun to spin backwards: so back we will go, whirling through great dark space, until, slowing, we will find ourselves alive, and somewhat near the same place we are now, on the coast of Northern California. The place is the same; the time, however, is different: it is the end of the last ice age, for we have traveled back in time 10,000 years.
The land seems fairly similar, although the prairies extend eight miles farther out to sea that they do in the 21st century. The huge, rolling hills and sudden rocky seastacks and boulders of blue schist, chert, and jasper that jut roughly out of the plains are all still there, thirty and sixty feet high. The coastline still dissolves foggily into the distance as we gaze south. However, the plants are somewhat different. Our hayfever is nonexistant. Instead of a carpet of short green grass, we walk through fields of bunchgrass punctuated by flowers. Wild iris and strawberries are blooming heartily in the spaces between rocks, thriving off of the trampling and grazing that creates open spaces for them. Sand dunes dot the landscape. We see evidence of people at this time, though we do not see the people themselves. Small heaps of discarded shells, bones, and stones, fire pits, perhaps even paintings on the tall rocks. This is a seasonal home, and the people who have camped here are already further south. All this is noticed later, when we look around - what catches our attention at the very first are the animals. Down the hill from us, not forty yards away, is a herd of mammoths. They aren't the woolly mammoths that roamed the Siberian steppes, but the larger Columbian mammoths, endemic to North America. They are huge - twice as heavy as an African elephant, although only slightly taller. It is a herd of about twenty animals, loosely related, led by a matriarch. This is part of their coastal migration route, and they have stopped here to rest. They graze, nap, and nurse their young. Some are licking the salt deposits exposed in the boulders, a valuable resource which may have helped them return through this prairie year after year. Juveniles test their tusks by play-fighting with each other. A lone bull has been following the herd from a distance and now ventures to move closer, the matriarch watching him warily. Some are rolling in a mud pit that has been created out of a large depression in the ground. Years later, this wallow may become a clear vernal pool, home to delicate and amazing creatures. But right now it is muddy, eroded, largely inhabited only by the mammoths. A large female chases them out of the wallow, and a young mammoth, already ten feet tall at the shoulder, rubs the mud off of himself against one of the rocky outcroppings. He has a favorite place to do this. There are several ledges that are at just the right height to reach behind his neck, and all the mammoths rub against them in the same few places. As we watch, the young mammoth leaves and the matriarch takes his place, scratching the thick hair on her cheek.
Fast-forward 10,000 years. Standing in the exact same place, we look up. The coarse schist and quartz, normally a rough and lichenous sandpaper, has been rubbed to a smooth sheen of green-blue. After millions of years of migration along this same route, we are reaching up and touching warm rock that the mammoths polished. <>
Most of the information presented here is the result of internet searches, abstracts of scientific papers, and my own inferences from the behavior and biology of modern elephants.
Some great links on the subject are:
http://www.parks.ca.gov/?page_id=23566, which led me to most of the sources I used in writing this.
http://centerfirstamericans.org/MT-archives.php, a publication by Oregon State University. Most of their issues are archived online, although the most recent issues may not be available.
Tuesday, December 8, 2009
Eli's Corner
Welcome to a new column, "Eli's Corner"! Eli is our sporadically-timed guest artist exploring nature on the West Coast, providing a fresh perspective on on all things art/ecology!
At the Wildlife Rehabilitation Center for the North Coast
“You have to cut them like this.” She handed me the scissors and let me give it a try. The cold, slimy fish almost slipped out of my gloved hand, as if it desired to return and mingle with its lifeless brethren in the sink in front of me. I gripped the capelin by its tail and methodically began snipping it into segments a centimeter long. The regular volunteer across the sink from me nodded her approval, but then stopped me as a reached for another fish.
“We only use the male capelin for cutting,” she said. “This one’s a female, see?” She pointed to the bulging egg-filled belly of the fish. “Cutting up a female just makes a mess. You can tell they’re a male if they have this big fin under their tail.” I picked up another fish, a male this time, and reduced him to finely processed bits. Then another, and another.
And so it began. I had decided to spend a day volunteering at Astoria’s Wildlife Rehabilitation Center for the North Coast, a small but respectable facility located about six miles southeast of Astoria, which takes in injured wildlife and tries to give it a fighting chance in the wild. Directed by Charnele Fee, who also has her home on the premises, the Center is run by a staff of mostly volunteers.
The exterior is surrounded by aviaries on one side and dense forest on the other. Within, the building houses several rows of large birdcages, and on a busy day it is filled with fish, feathers, and skittish seabirds. This isn’t to say that the place is a mess. Each day, volunteers check on the health of their patients, clean the floors, change the cushioning in the cages, and bathe and feed the birds. Which brings me back to where I fit into the story.

I was currently cutting capelin to be fed to a wide variety of seabirds, who had been brought in in the wake of a recent algal bloom crisis off the Oregon coast. Proteins produced by the algae had begun dissolving the protective oils on many birds’ feathers, and as a result many of them had contracted hypothermia. Now that the crisis was over, the staff at the Center were still working extra hard to catch up with lost time. I had come here to lend whatever help I could, and was currently booked as a sort of avian sushi chef. Bit by bit, the little plates were filled with cold gray fish, and washed with water. I periodically heard the eager cries of the invalids as the food was brought to their cages. Soon, there were no more male capelin left, and the females were prepared, to be swallowed whole by some of the larger birds.

I stepped out into the main room for a short breather, and had to alter my path to avoid treading on a quizzical-looking gull that was waddling about in the aisles. The room contained many cages, holding an assortment of gulls, fulmars, loons, grebes and murres. Many more birds stood on the floor, waiting for their cages to be cleaned. A few birds were having their turn in the sink to bathe themselves, and were splashing joyfully about.

Earlier in the day, when I first arrived, I was given the task of rounding up a group of about ten common murres, one by one, and put them in a water-filled sink. Murres are very social colonial birds, and when threatened, they cluster together. I have little to no experience handling wild animals, and so I was prepared for anything. Upon entering the large cage, I must have presented a fearsome sight to the murres, because they shrank against the back wall and squirmed over each other to get away from me. I picked my target and, resolutely, grimly, I descended upon the bird, grabbing it forcibly with one hand and gently but firmly holding behind its head to keep the pointy beak from coming back at me.

I rushed the murre quickly to the sink and deposited it with a big splash. The terror of the helpless bird quickly gave way to exultation, as once freed, it began to splash around in the sink, cleaning itself. I went back for more murres, picking them up one by one, much to their horror, and putting them with their companions in the sink, much to their delight.
This task was, perhaps, given to me as a sort of trial by fire. I had come in late morning, announced that I was “very much a greenhorn” when it came to handling wild animals, and was right away given a job that was up close and personal with struggling waterfowl.
The day progressed with seeming rapidity, with seldom a pause or a dull moment. I was given a tour of the grounds, and saw all the birds in the aviaries, who were close to being ready for reintroduction to the wild. Two deer were always present outside the Center, and the lady who took me and another volunteer on the tour explained why they were seemingly unafraid of humans.

"The older one was a fawn when Charnele received her. Her mother had been hit by a truck and died, and so she grew up in human care. Now she has a baby of her own!" she pointed to the other, younger deer. The two animals were somewhat skittish when approached, but aside from that did not mind the presence of humans at all. In fact, while cutting the fish earlier, I had seen the mother deer peering at me through a window that was a mere three feet away from me.
The deer weren't the only mammals that the Center had given aid to. Years before, a lynx was brought in who had snared her paw in a steel trap, and forced her way out, leaving behind most of the skin of her paw. She was held at the Center for enough time to recover, but not long enough to gain any trust for humans.
"She really hated us," my guide continued. "Every time one of us would walk past her cage, she would arch her back and hiss menacingly." Like many of the inmates, the big cat was released right on site, and might still be lurking in the woods there. Or she got out of there as quickly as possible.
The aviaries presented still more interesting sights. Some of them had large tubs of water, wherein dozens of murres and grebes paddled around, or clustered together on floating rafts.


Another aviary was 110 feet long, and was designed to help healthy birds strengthen their flight muscles.

A group of brown pelicans and double-crested cormorants was gathered at one end, while a peregrine falcon surveyed the scene from a perch at the other end.

In another aviary, two large owls stood sleepily beside each other. One, a barred owl, was a light beige, almost white color, while the other, a spotted owl, was brown with light spots. In the wild, the more aggressive barred owls are encroaching on the territory of their more docile cousins, the spotted owls, but in this cage, the two seemed to be getting along just fine.
Back inside the facility, I was again given an opportunity to do something I'd never done before. It was time to clean the cage of a large red-tailed hawk, and so, with some trepidation, I agreed to hold the enormous bird. I was given a pair of massive welder's gloves and waited while one of the other volunteers patiently advanced on the angry bird with a large blanket. The idea was to grab the bird from behind with the towel, and to pin her legs together with the glove. The hawk's beak is less of a danger than their cruel talons. Hawks are capable of causing severe lacerations and even broken bones with their powerful hind legs. The other volunteer carefully handed the hawk to me, and I held the big bird firmly against myself. As the other volunteer was cleaning the cage, I walked around a bit. The hawk would become upset whenever I walked away from her cage, and let out a high pitched squeaking sound which is the sound a frightened baby hawk makes. Finally I released her back into her cage. I was amazed by how light she was, scarcely any heavier than the murres I had handled earlier.
The day was nearing a close, and soon only I and the volunteer who I had helped wrangle the hawk remained. She and I set about our final task, which was to feed and warm a miserable and bedraggled short-eared owl. This owl had been found by fishermen 25 miles out to sea. It is not uncommon for land birds to be blown way off course, and this poor owl was no exception. They had found him near the beginning of their four day fishing trip out beyond the treacherous Columbia bar. The crew weren't about to turn their vessel around and come back right away, as they had fish to catch, so they sheltered the owl and tried to feed him bait fish. This was clearly not enough, as he now hunched in an almost delirious state before us.
Feeding an animal that is well advanced in the stages of starvation is a dangerous business. Food can become deadly if consumed too quickly, and so we set about creating a meal for the owl in liquid form. A small mouse was taken out of the freezer and cut up with scissors, then its meat and guts were mixed with water to make a kind of mouse puree. Then we held the owl gently in a blanket and used tweezers to force bits of the food into his beak. At first he didn't even respond, but soon he was eating small amounts of the food. Eventually, he was able to lean forward of his own accord and eat directly from the dish. After that, we placed him in a cushioned cage with a heat pad. He looked exhausted.
That was the final task in my day of work at the Wildlife Rehab Center for the North Coast. I was grateful to be given this opportunity to work with wild animals, something I haven't really been able to do before. It truly was an educational experience, and I hope others will follow my example and donate some of their time to help injured wildlife. There's always need for more help there.-Eli
Tuesday, December 1, 2009
November 17 - December 1, 2009: Tilting
The beginning of the answer is such: that the obliquity of the ecliptic of the earth is approximately 23.44°. "Ecliptic" refers to the plane of orbit; "obliquity", the deviation from perpendicularity. This is the tilt that causes the seasons. Because of this tilt, each half-orbit that our Earth makes around the sun brings either the northern or southern hemisphere closer to the sun - whichever hemisphere is closest receives more sunlight per day, and at an angle which delivers more sunlight energy per unit of surface area. Recall that sunlight allows life on Earth, and think about a difference of 1/37 more or less sun energy being received by California or Oregon. And, like most things about Earth, this 23.44° is not constant, but cyclical. There is a 41,000 year cycle between obliquities of 22.1° and 24.5°. The Earth actually moves like a gyroscope through space, and if you imagine yourself setting a top to spin, imperfectly, so that the handle doesn't stand up as straight as you might like it to, but describes larger and larger circles upon your table, until the handle touches down and your top goes rocketing off into ... outer space. Like your top, the Earth's axis is slowly describing a circle through space.
( This is not, however, in an ever-widening circle - for a more thorough discussion of these reasons, and about the obliquity of the ecliptic during Earth's formation, see "Extraordinary climates of Earth-like planets: three-dimensional climate simulations at extreme obliquity", by Darren M. Williams and David Pollard, and printed in 2003 in the International Journal of Astrobiology. The link is
http://physics.bd.psu.edu/faculty/williams/3DEarthClimate/ija2003.pdf
And you may have calculated that we are approximately in the middle of this cycle. What does this mean? Changes in the degree of tilt will affect the amount of differences between the seasons, and the length of the seasons. But specific effects of differing obliquities are complicated and disputed, and I honestly cannot explore them here, nor do I feel expert enough to judge good or bad astronomy. I will only write that they include effects of nutation, eccentricity, precession, inclination, and insolation, and that they might (or might not) be responsible for ice ages. I can hardly summarize the grace with which some reports are written, so I will direct you to page 182 of "the Change in the OBLIQUITY of the ECLIPTIC; its Influence on the CLIMATE of the POLAR REGIONS, and LEVEL of the SEA." By Mr. JAMES CROLL, published in 1867. The link is
http://docs.lib.noaa.gov/rescue/IPY/IPY_020_pdf/Qc8845A6C761867.pdf
To an ecologist (which is what we think we may be), a knowledge of the amount of sunlight that the earth receives on any given day is paramount to understanding how energy is cycled throughout ecosystems. The obliquity of the ecliptic matters! Not only for the basic needs of human survival (i.e., plant in spring, harvest in autumn) but for understanding the great patterns that underlie the spinning planet upon which we make our home.
October 31 - November 1, 2009 : Autumn
No wonder this is the time when spirits walk the earth - it is maybe more hospitable to their kind, now. Maybe the earth and the ghosts understand each other better in this time of dying. Maybe the falling leaves are like knocks on doorsteps.
Don’t go outside now without a scarf, a hat, your winter jacket. It seemed like just yesterday your tank-tops sat at the fronts of your bureau drawers, but suddenly winter is on its way! Or maybe it’s the breath of ghosties that puts chills around your neck. Don’t worry, they wont hurt you. But bundle up.
And be nice to them. How would you like to be tickled, 364 days of the year, but 2 million feet rustling over your resting place 6 feet underground? Dia de los Muertos would be your last chance to scratch and stretch before the millipedes, centipedes, acari, arachnae, protists, fungi, and bacteria resume their rambling above your bones. But you old spirits probably like those little creatures alright, really. After all, they’re forgotten about most of the time, too.
Geese and antelope move south, gophers find their burrows, humans chop firewood. What do the forgotten creatures - the tiny, “ugly”, “creepy” creatures, the ones that live, largely unseen, in the real earth, the soil, the leaf litter, the rich humus and dry sand - do in winter?
Saturday, October 24, 2009
Hello and Welcome
Drink of this rich elixir.
Walk with us on a path around the the earth, as we investigate the patterns, behaviors, and connections that surround us. Join us on these adventures, looking down where others would look up, and looking up where others would look down!






