Archive for the ‘Winter’ Category
Posted in Astronomy, Uncategorized, Weather, Winter, tagged american museum of natural history, amnh, erik baard, full moon, hayden planterarium, moon, nature calendar, naturecalendar, perigee, tyson, urban astronomy, urban ecology, urban environment, village voice on January 10, 2009| Leave a Comment »
by Erik Baard
The moon increases in apparent size for two reasons. Routinely we observe an apparent swelling in the moonrise. Because of a quirk of human optical neurology we percieve the moon as larger on the horizon, rather than overhead. But the moon is also at times closer or further from Earth in different points of its elliptical orbit. Tonight is perigee, the closest pass. It will appear 14 percent larger and 30 brighter than what you’ll typically find for the rest of the year.
Of course, oldsters might tell a young’n that the moon was bigger and brighter when they were young. Well, they’re right in fact but there’s no way a human could detect it: the satellite is ever-so-slowly spiralling away from its host planet. Each year it stretches our gravitational bonds by about 1.6 inches (4cm).
The moon tantalizes us, draws us into the Cosmos beyond. At some level, this is our narrowness making us silly: we are born, live, and die in space as much as those who might do the same on any other world. Still, it remains a place of national posturing, from the Space Race of the 1960s to the emerging powers of India and China.
For an inner city child, however, the lure of the moon is that it reveals a real topography to his or her eyes from any street corner, even without expensive equipment or the crystal clear skies of the backwoods. As South Bronxite Neil deGrasse Tyson told me for a Village Voice article, a realm of personal possibilities was opened when he stared at the moon from his stoop through a pair of binoculars after his father took him to Hayden Planetarium at the American Museum of Natural History.
“I saw the mountains and valleys and craters of the moon. It became another world, something to learn about,” he remembers. “I knew I wanted to be a scientist since I was nine years old and I never wavered.”
He is now an astrophysicist and the Frederick P. Rose Director of the Hayden Planetarium.
* As a side note, the mountains are seen better on a half or crescent moon, because features are seen in relief. Straight on, light bounces back up from every little crevice, washing out our view.
My own enjoyment of tonight’s delight takes me back to the wintry Snow Moon perigee of February 1988. I was staying over at Smith College with my then-girlfriend (who now works for an oil company — some things weren’t meant to be). Seeing her sleep inspired this poem (and forgive that WordPress always screws up spacing and formatting):
to the broad and barren moon
the peace of being lost
in my sleeping lover’s
Posted in Atlantic Ocean, Birds, Bronx, Brooklyn, Edible Plants, Fungi, Insects, Invertebrates, Mammals, Manhattan, New York Harbor, Parks, Plants, Queens, Trees, Uncategorized, Vertebrates, volunteer, Winter, tagged broad arrow, conifer, eastern white pine, ecology, environment, erik baard, fibonacci, fish and wildlife service, forest, friends of gateway, greater astoria historical society, haiku, haudenosaunee, inwood, iroquois, lic community boathouse, Million Trees NYC, native american, nature calendar, naturecalendar, new york city, parks and recreation, pelham, pilgrim, thoreau, tree planting, Trees, urban, white pine on December 29, 2008| 4 Comments »
by Erik Baard
Far inland, a wind
lifts fine snow from ancient pines.
Shimmers like sea spray.
I wrote that haiku twenty years ago intending to show the sensual commonality of contrasting locales, pointing toward our shared experiences across superficial cultural divides. Only today, while poking around data piles about pines in this tanenbaum time of year, did I learn of the deep connection Eastern White Pines once had with the ocean.
Within twenty years of landing on the Eastern White Pine-spired shores of New England, the Pilgrims were exporting trunks for ship masts to ports as far away as Madagascar. The New World, from Nova Scotia to Georgia and out west to Minnesota, boasted Eastern White Pines standing over 80’ (24m), with reports of individual trees soaring up to 230’ (70m). Though this species is the tallest pine in North America, healthy ones are also pin straight.
As the colonies grew, so did competition for use of Eastern White Pines. In no mood to pay market rates for its materials, the British government carved the trunks of choice trees with the “broad arrow,” reserving them for Navy ships and exacted heavy penalties from violators. Colonists came to resent that heavy-handed claim on their assets and began falsely marking lesser stands while selling the navy’s best as more profitable lightweight, strong, knotless, and pale (hence the tree’s name) plank wood. Though it’s little remembered today, friction over the issue contributed to revolutionary sentiments among New Englanders. During the vicious “Pine Tree Riot” a sheriff was lashed with pine switches and his horses were maimed. One might say the Minute Men thumbed their noses at the crown by putting an Eastern White Pine in the white canton of their flag, where the cross of St. George used to be.
You can still see a broad arrow carved into white pine in New York City today, but not in a way one might expect. The pinewood door of an 18th century mansion belonging to the wealthy, rebel Blackwell family of western Queens bears the mark from a British soldier’s saber as a sign of punitive confiscation. The house has long since been demolished, but the door (with melted bottle windows in a neat bit of early recycling) is on display at the Greater Astoria Historical Society.
The rapid growth of the new United States was fed by raging deforestation. Henry David Thoreau was troubled: “The pine is no more lumber than man is, and to be made into boards and houses is no more its true and highest use than the truest use of a man is to be cut down and made into manure,” he wrote in Autumn.
Of course, human appreciation the Eastern White Pine long precedes that European imperial tussling and Yankee commoditization. Native Americans depended on the trees for much more than their wood. Their Vitamin C-rich needles can be made into a tisane, or “herbal tea.” The inner bark, called the cambium, can be beaten into a flour extender in hard times. Cones can be stewed and the seeds are edible. The sap, resin, and tar have medicinal value. Resin can be used to waterproof materials, from baskets to boats.
Across a wide swath of North America, Eastern White Pines feed white-winged crossbills (whose bills are specialized for prying open cones), pileated woodpeckers, flying squirrels, red squirrels, beavers, snowshoe hares, porcupines, mice, rabbits, and voles. Bald eagles, moths, chickadees, morning doves, common grackles,and nuthatches shelter in them when they stand, while in fallen trees you’ll find woodpeckers and hibernating black bears nesting. They become such a bedrock of the ecosystem because they efficiently spread seeds by wind and mature trees are somwhat fire resistant.
Sadly, it’s tough to find what naturalists reverently call the “virgin whites,” specimens aged over 350 years. After centuries of rampant exploitation (and vulnerability to blister rust that’s carried by cultivated ribes) we’re beginning to make restitution. A few mature stands can be found within the boroughs, notably along the Kazimiroff Nature Trail in Pelham Bay Park in the Bronx and at the Jackson Pond pine grove of Forest Park in Queens. In northern Manhattan, visit Inwood Hill Park near Payson Street. Look for tall, blue-green pines with finely serrated needles measuring between 2” and 5” (5-13cm), and bundled in groups of five. The cones are soft and slender and about 5” long. For me, the most beautiful part of this tree is its almost fractal expression: branches, needles, and cones all spiral in a Fibonacci sequence.
Here’s a great little video lecture snippet:
Conifers like the East White Pine are marvelously well adapted to snow and cold. The smaller and more numerous needles (compared with typically broad, deciduous leaves) remain evergreen and exceptionally dark to absorb maximum sunlight in the dim northern winter. Photosynthesis isn’t the aim in the dormant season, but rather simple heat, because like humans, trees survive best in a limited temperature range. With few pores and a waxy coat, they also retain water well. Unlike the skyward reaching branches of some species, their branches angle downwards before curling up at the end, to slough off snow before the weight can cause damage.
Future generations of New Yorkers will enjoy more Eastern White Pines than we do. It’s a core species of the Million Trees NYC drive. A crew of volunteers from the LIC Community Boathouse was happy to plant white pines in Floyd Bennett Field under the guidance of Friends of Gateway. Our little Charlie Brown Christmas Tree-like saplings surrounded dying Japanese black pines, which were planted under a “Beautify America” program spearheaded by Ladybird Johnson. Those exotic transplants are falling to the blue stain fungus, which doesn’t affect indigenous white pines, explained Dave Lutz, chair of Friends of Gateway. Earth Day NY rounded up people to plant some more for the NYC Department of Parks and Recreation this autumn and I was glad to participate. Another recent “Million Trees” planter of a white pine was Carl XVI Gustaf, the King of Sweden. Volunteer tree planters are needed.
For an urbanite, the greatest value of a stand of Eastern White Pines might be spiritual, in a way that transcends any one religion or the Christmas holiday. As Thoreau wrote, “I saw the sun falling on a distant white-pine wood…It was like looking into dreamland.” When we look upon the tree for itself, and not for its uses, the effect is immediate and the cause is clear for why the Haudenosaunee (Iroquois) people called this the Great Tree of Peace.
Posted in Atlantic Ocean, Brooklyn, Estuary, Long Island Sound, Mammals, Manhattan, New York Harbor, Parks, Queens, Staten Island, Uncategorized, Vertebrates, volunteer, Water, Weather, wild eyed, Winter, tagged Atlantic Ocean, cold stun, dolphins, ecology, environment, erik baard, Estuary, gowanus canal, injury, Julika Wocial, long island, marine mammal, nature calendar, nature community, naturecalendar, naturecommunity, neena dhamoon, new york, new york city, rehabilitation, rescue, riverhead foundation, Robert DiGiovanni, seal pox, seals, Sofia Theologitis, turtle, urban, volunteer on December 23, 2008| 1 Comment »
by Erik Baard
If a seal falls ill in the Gowanus Canal, a turtle catches an autumnal chill in Montauk, and a dolphin gets marsh bound in the Great South Bay, there’s a good chance they’ll end up as roommates at the Riverhead Foundation for Marine Research and Preservation.
As New York State’s only authorized marine mammal and sea turtle rescue group, the Riverhead Foundation is called upon to perform rescues and verify unusual sightings throughout the southern New York salty shorelines — the Long Island Sound, Atlantic Ocean, New York Bight and New York Harbor. The small, overstretched staff is like an aquatic A-Team housed within the Atlantis Marine World Aquarium, a well-run regional attraction where sting rays poke up to kiss you right upon entering the door. Really. Well, okay, and be fed.
(This photo and those following, unless otherwise specified, were taken by trip participant Sofia Theologitis.)
Our Nature Calendar group of five was ushered into the back rooms where the Riverhead Foundation does its work of assessing, monitoring, and healing animals held in cylindrical tanks for eventual release into the ocean or transfer to another aquarium. The most frequent guests are seals and turtles (we saw about ten of them, representing a mix of species that including harbor seals and a loggerhead turtle that had arrived an hour before us), though dolphins and porpoises are regulars too.
(I learned about the foundation eight years ago when I was with a pod of fellow winter kayakers who confirmed Harry Spitz’s sighting of the first community of seals in New York Harbor in 120 years, and wrote about it for the New York Times.)
You’ll know that turtles are in residence if upon stepping off the decontamination shoe pad you’re hit with a wave of warm, moist air. Some “cold stunned” turtles appear dead because they’ve been immobilized by temperature drops, before they could migrate to warmer waters.
“They get washed ashore like any other debris,” said rescue program supervisor Julika Wocial, who trains the public in making proper sighting and stranding reports . “Don’t assume a turtle is dead unless it’s decomposed or missing a head.”
Other turtles can’t dive well because of trapped gas pockets in their shells. This makes it hard to feed, leaves them vulnerable to predators and boat injuries, and above-surface shells sections can degrade with prolonged air exposure (as with the patient below). A bubble can be drained, but evenly distributed gas is a challenge. Sometimes weights are added, or the turtle is found unfit for release.
Flipper injuries like the one photographed below were common (suspected shark bites) among turtles, as are propeller lacerations. Even double rear amputees can survive in the wild, explained Robert DiGiovanni Jr., director and senior biologist at the foundation.
Whirl pools at the center of seal tanks mimic ocean currents and combat muscle atrophy.
Seal pox further weakened a few already struggling pinipeds. The viral disease, which isn’t transmittable to humans, runs its course with the severity and duration of our experience of chicken pox. Instead of many small pustules dotting the skin, however, seals get several larger, hard knobs near their faces and flippers.
Perhaps more surprising was how common eye injuries are among seals. Of course, those at the foundation were being rehabilitated and weren’t representative of the general population. It makes sense, however, that seals would often get bitten or poked around the eyes as they rooted around the seabed.
The staff takes special care to not bond with the animals, so that they retain natural behaviors and a healthy aversion to humans upon release. As social mammals with expressive faces, seals make this particularly difficult. Well, at least for me. The female seal I photographed below and I had some immediate chemistry. Ms. Wocial mildly reprimanded me for lingering and chatting with this pirate-eyed beauty.
Staff and highly-trained volunteers work together in both rescues and releases, with the latter being sometimes nearly ceremonial. Sponsors who “adopt” seals and turtles come out, as do reporters and other friends of the foundation. Sometimes a dolphin must be gently ushered out of its tank by a wall of staff and volunteers wearing dry suits, with arms interlocked. Slight injuries, sometimes quite painful, are common among the humans.
Costs for rescue, rehabilitation, and release range from $6500 for a seal to $120,000 for a dolphin. Medical machines are always needed, Mr. DiGiovanni said, and often come through hospital donations. One recent acquisition greatly improving the Riverhead Foundation’s field work is a portable unit to test for blood gases, electrolytes, and glucose levels.
Released patients of the rescue hospital have paid back their human tenders with unprecendented revelations. Tracking devices on their backs have mapped migration patterns, not only north-to-south, but inshore and offshore, where deeper waters have steadier temperatures, according to Mr. DiGiovanni. The foundation doesn’t necessarily deliver animals to places near their rescue locations because they usually swim hundreds or thousands of miles within weeks or months of returning to the wild.
Our own path was more predictable. As people now contaminated by seal pox, we were slipped out the back door. Our hosts apologized for the necessity, and stopped short of making us wear leper bells.
(One trip participant, Neena Dhamoon, is already raising funds from officemates, friends, and family!)
To volunteer, please email: firstname.lastname@example.org
(Different skill levels are needed, ranging from basic office help to *gentle* dolphin wrestling, after much training.)
by Erik Baard
Some of the loveliest snowflakes you might see this winter glow warmly on a computer screen.
Lafayette College mathematics professor Cliff Reiter might share the joy of a kid making snowflakes with scissors and paper, but his computer simulations of crystal growth aim at deeper revelation. The sublimity of his creations attest to the beauty he sees in the elegant algorithms underneath.
“Isn’t it the juxtaposition of symmetry with complexity that makes snowflakes beautiful? With models, or mathematical arguments, simplicity plays a role similar to symmetry,” Reiter said.
More through this link.
Posted in Amphibians, Estuary, Long Island Sound, Mammals, New York Harbor, Parks, Recreation, Reptiles, volunteer, wild eyed, Winter, tagged beach plums, erik baard, long island, Long Island Sound, Mammals, marine, nature calendar, naturecalendar, newtown pippins, ocean, otters, riverhead foundation, seals, turtles on December 9, 2008|
To all those sitting on the fence about heading out to Riverhead, Long Island on a Newtown Pippin and beach plum quest (see below), Nature Calendar throws down a challenge: Can you resist this?
Our trip will now include a behind-the-scenes tour of the Riverhead Foundation for Marine Research and Preservation. You’ll learn about their work to protect and rescue the sea mammals (otters are coming back now!) and turtles of our local waters. Oh, and by the way, the photo is clearly Photoshopped. No one put a Santa hat on the seal, so spare the marine biologists’ any angry letters! 🙂
I first got to know the Riverhead Foundation when I broke the story of a seal community establishing itself in New York Harbor. The staff biologists have been a generous source of good information even since.
Only one request: No attempts to balance fruits on the seals’ noses, okay?
If you’re interested in coming on this road or rail outing, please email email@example.com ASAP. We don’t seem to be limited for space, but we need to coordinate travel logistics and such.
There is no fee for this outing. You need cover only your own travel and shopping.
Posted in Astronomy, Atlantic Ocean, Bronx, Brooklyn, clouds, Estuary, Fall, Geology, Manhattan, New York Harbor, Queens, Spring, Staten Island, Summer, Uncategorized, Water, Weather, Winter, tagged Astronomy, atmosphere, chaos theory, complexity theory, david grinspoon, denver museum, dog days, erik baard, funky science, heat, heat wave, isothermic, Joe Rao, nature, nature calendar, naturecalendar, new york city, new york times, science, solstice, Summer, sunlight, urban ecology, urban environment, urban heat, USA Today, venus on June 24, 2008| 1 Comment »
by Erik Baard
A kid waiting to kayak at the Clearwater Festival last Solstice weekend asked me, “If this is the longest day of the year, then why isn’t it the hottest?” It’s a logical question, and I guess a common one. The incomparable Joe Rao addressed it in his New York Times astronomy blurb last week, and USA Today explored the question as well. The graphic above comes from USA Today.
In short, if Earth lacked an atmosphere, then surface temperature, apart from heat retained by rocks, would correlate with sun exposure. But our relatively stable atmosphere slowly and steadily receives energy from sunlight over the course of the spring and summer, as days lengthen. That energy, which we feel as heat, builds higher and higher until reaching its peak in July and early August.
I suppose an economist might call day length a leading indicator of summer, whereas as temperature is a lagging indicator. Swimmers and boaters (who are perpetually potential swimmers) know that this phenomenon of delay is even more pronounced with water temperatures.
Of course both air and water move around, so there’s a good bit of chaos and complexity to the fluid dynamics that make for summer weather and those late night skinny dips in open water that feel as warm as a bathtub. But the principle of heat retention is a far more powerful truth than its exceptions.
I’m also reminded of my good friend, David Grinspoon (with whom, for the record, I’ve never skinny-dipped), who joined us with comments about the Orion Nebula for the very first essay on Nature Calendar. He’s an astrobiologist (with an Earthly incarnation as a rhythm guitarist) with prestigious Mars and Venus robotic probe science assignments from both NASA and the European Space Agency, and serves as the curator of astrobiology at the Denver Museum of Science and Nature. He’s devoted much of his career to the planet Venus. He notes that if there was intelligent groundling life on Venus, it won’t see dominant temperature zones as we see them, corresponding to latitude, but instead look skyward to temperate altitudes. This is because Venus has an atmosphere that’s so dense, and therefore conductive, that heat overloads long ago seeped across all geographic areas. The surface is now isothermic, meaning that temperatures at the poles and the equator are the same. It’s gotten so hot there, due to a greenhouse effect gone into overdrive, that David postulates Venusian life would prefer a cloud habitat.
Of course, our cities perversely punish themselves, with air conditioners dumping extra heat into the dense local ecosystem through their exhaust, building electrical wires, regional transmission lines, and the power plants required to power them. Makes you wonder if there’s intelligent life on Earth.