Naked Gobies in Newtown Creek

Flora and Fauna Fridays

A weekly entry about the life of our estuary and watershed.

twofin72716s

Naked Goby. (Smithsonian Environmental Research Center.)

 

by Erik Baard

Skinny dipping in the Newtown Creek Superfund Site might seem unwise, particularly in February, but it’s a way of life for naked gobies (Gobiosoma bosc). These very small, bottom-dwelling fish of the Eastern Seaboard and Gulf states are extremely common yet rare to see. That’s a shame because gobies — one of the most diverse families of fish, with over 2,000 species — have rich and fascinating lives packed into typically less than four inches and four years.

Ecologists for city, state, and federal agencies did encounter naked gobies in early studies to profile the life and pollutants of what became HarborLAB’s home waterway. They discovered an abundance of goby eggs at the mouth of the creek but not further in, indicating that spawning happened where cleaner East River waters swirled in with each tidal cycle. No surprise given that naked gobies and their eggs and spawn are often found in the fish-protecting screens covering intake tubes at the nearby Ravenswood Power Plant. Bear in mind, however, that this is opposite of the natural state of affairs. Fish normally lay eggs and spawn in sheltered areas outside the swift main channel of waterways. The East River is dredged, constricted by landfill, and edged with bulkheads that make for even faster currents. The slower-moving four-mile stretch of the Newtown Creek should by rights be the East River’s nursery.

As it is, only adult “gobies were prevalent in the mid-section of the Creek,” according to the Fish and Wildlife Service report linked above. Still, what a testament to this species’ hardiness, given that the creek bed (commonly described as being like “black mayonnaise”) is sedimented with toxins and stripped of naked gobies’ natural habitat of oyster beds and salt grass clusters. Females prefer to lay their amber-colored eggs into empty oyster shells. In the Newtown Creek, they make do with rock, crumbled concrete bulkheads, partly interred plastic trash, bottles, and other debris. In the winter, they bury themselves into that poisonous black mayonnaise.

ngoby

(South Florida Water Management District)

Naked gobies feed on worms and small crustaceans, which concentrate in their tissue the toxins of a century of oil spills, refinery and tannery effluents,  and illegal dumping.  Cloaked by the muck and the murk, these “naked” prey fish for better known species like striped bass, eels, and bluefish are still taking no chances. The species is scaleless and camouflaged in green and brown blotches. Their eyes are close together, atop the head. At a glance they look like lizards. The young are translucent.

Naked goby pelvic fins have evolved to fuse into suction cups, a neat trick for anchoring themselves. Scientists have noted that gobies can remember how to navigate complicated obstacle courses for at least 40 days, and judge and remember spatial relationships, useful for hopping from tidal pool to tidal pool. Some cousin species of goby have also evolved complex behaviors and symbiotic relationships. For example, one species climbs waterfalls that to human scale is the equivalent of climbing Mt. Everest three times over — check out this video! Others groom the parasites off larger fish. Another enjoys an “Odd Couple” relationship with a large burrowing shrimp. The fish and crustacean cohabitate and deposit eggs in the same burrow. They touch each other (with tail and antennae respectively) constantly to know if the other is agitated or retreating, relying on each other’s complementary senses. And we are still discovering new species of goby!

 

naked-goby-range

Naked Gobi range. 

Eastern White Pine, the “Great Tree of Peace”

Flora and Fauna Fridays

A weekly entry about the life of our estuary and watershed.
This week’s entry by Erik Baard, Courtesy of Nature Calendar. 

Eastern White Pines. Photo by US Fish and Wildlife Service.

Eastern White Pine. Photo by US Fish and Wildlife Service. 

Far inland, a wind
lifts fine snow from ancient pines.
Shimmers like sea spray.

I wrote that haiku over a quarter century ago, intending to show the sensual commonality of contrasting locales, pointing toward our shared experiences across superficial cultural divides. Only later 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 what they felt were 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. 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 commodification. 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 somewhat 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. I organized a crew of volunteers 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.”