News from the preserves, parks and backyards of Princeton, NJ. The website aims to acquaint Princetonians with our shared natural heritage and the benefits of restoring native diversity and beauty to the many preserved lands in and around Princeton.
Showing posts sorted by relevance for query monarch. Sort by date Show all posts
Showing posts sorted by relevance for query monarch. Sort by date Show all posts
Tuesday, September 24, 2013
Monarchs--A Miracle in Need of a Miracle
As monarch butterflies begin their migration south towards a home they've never seen but somehow know how to get to, in the mountains northwest of Mexico City, the annual miracle we've long taken for granted appears threatened. Overwintering numbers were down by 60% last winter from the year before. The total population of eastern monarchs occupied only three acres in Mexico's 130,000 acre mountain preserve. The word from New Hampshire to Michigan is that sightings are way down this year. I've seen only two of these beautiful creatures in my wildflower-packed backyard this summer, and none laid eggs on the many swamp milkweeds. What a contrast with 2007, when we had great numbers of larvae, some of which we grew in a glass bowl and later released.
Though threats of logging in the overwintering forest have now been greatly reduced, the monarchs face the increasing weather extremes associated with climate change, and the increasingly hostile North American landscape. In other words, the struggle to save the monarchs has shifted from a point source problem (their overwintering habitat) to a nonpoint source problem (the quality of habitat across the eastern U.S. and Canada).
Above all, Monarchs need to encounter milkweed as they head north from Mexico into Texas, then fan out across the midwest and east coast, with one generation giving way to the next. Last year, deep drought in Texas and elsewhere desiccated what milkweed they could find, but the even bigger problem is 100 million or more acres of farmland that once hosted some milkweed, but now have been converted to Roundup Ready corn and soybeans. 90% of corn is now grown in this way, eliminating most weeds. Fields are planted right up to fencelines and roadsides, eliminating even the borders that once were havens for milkweed.
If you drive out Quaker Bridge Road in Princeton, you can see milkweed rising up above the other weeds in a fallow field. Compare this with the picture at this link, of a corn field in Iowa. Corn for as far as the eye can see.
The photo here on the left (closeup below) shows patches of common milkweed (Asclepias syriaca), which spreads underground and is the most common around Princeton. Swamp milkweed blooms later, doesn't spread, and has softer leaves which you'd think the larvae would prefer, but not necessarily. Butterflyweed is a particularly beautiful milkweed with a disk of brilliant orange flowers, occasionally seen in drier meadows. There are additional prairie species of milkweed rarely encountered hereabouts.
With America's heartland becoming so hostile to Monarchs, the question increasingly becomes whether the butterflies will be able to make it to New Jersey in sufficient numbers to take advantage of the milkweed growing here. In the past ten years, acreage of overwintering butterflies in Mexico has dropped from 25 down to 3. The Roundup Ready corn was first sold commercially in 1998. Overuse of Roundup for growing these genetically engineered crops has led some weeds like giant ragweed, pigweed (both of these species grow in Princeton), and many others to gain resistance to glyphosate, the active ingredient in Roundup. Presumably, milkweed has yet to develop resistance.
On the way out to Route 1, I stopped recently near the canal on Quaker Bridge Road to look out on a field where once I saw many Monarchs feasting on a sea of yellow tickseed sunflower (Bidens) blooms. Almost no Bidens there this year, for whatever reason.
Further down the road, near the canal bridge, there was some Bidens, but no Monarchs. Neither did I see any Monarchs on the ribbon of yellow blooms along the right of way at the Sourlands Mountains Preserve the week before.
I doubt these fishermen at the DR Canal noticed any change in the air.
Certainly drivers navigating narrow Quaker Bridge Road would not take note of any absence in the fields around them. The state of the monarch is but one of the changes quietly happening in the blur of green off to the side as we race forward.
It would be a relief if their numbers rise again, as they did after a very low year in 2004/05, but the trend is towards more agricultural herbicide and unstable climate, not less.
One question at the back of my mind is whether they depend at all on large numbers, to find each other to mate, and to make the long flight back to Mexico. Might large numbers help their momentum as they migrate, much like we are swept along by the momentum of the crowd on an urban sidewalk?
After a long drought in sightings, the visit from this monarch in my backyard a few days ago, feasting for an hour on aster and ironweed nectar, was a real gift. I wish for the past luxury of taking them for granted, though it's hard to think of them with anything but a sense of wonder. Now, this miracle needs another--a nation that cares enough to change its farming practices and the kind of energy it uses, if not for the Monarch, then for ourselves.
There was one day, as a boy walking home across the expansive lawn of Yerkes Observatory in Wisconsin, when I looked up to see the sky completely filled with Monarchs passing through. Such a sight stays with you forever. Though the memory is mine, it is each year's new generations of Monarchs, migrating 2500 miles to New Jersey, that bring it back.
In New Jersey, monarchs migrating south get channeled through Cape May. Here's a blog with daily updates on numbers.
Below are some articles:
One on NPR radio, another in The New York Times,
and a USAtoday article, which may pester you with an ad on an attached video.
An explanation of how they navigate can be found here.
Wednesday, October 17, 2018
Early Autumn Vignettes
Nature can sometimes come in close in the fall. This wooly creature, the caterpillar of a great leopard moth, not to be confused with a wooly bear, showed up on the floor in a corner of our bathroom.
Perhaps it came in with some firewood stacked in the sunroom next to the bathroom. I meant to take the caterpillar outside, but got distracted, and found it the next day in the hallway beyond the family room. At that point, it was given transport out to the back corner of our yard, where it will presumably find some cover for the winter.
Bumble bees can get soporific in the fall, dozing on a flower as if they've forgotten their reason for being, which all but the queens may well have. This one landed on my hand while sitting outside a cafe on Nassau Street. Its curiosity seemed harmless enough.
Another surprise came while walking home on Moore Street. Pokeweed (inkberry) is a large, fleshy plant that often looks rank and weedy, but every now and then, it grows in a place that reveals an elegance and beauty. Its perennial root sends up a new stem each year, unlike its close relative in Argentina, the ombu, which has a tree-like perennial top but lacks a real tree's xylem.
A subtle surprise of the ornamental seed variety came during a recent walk at Herrontown Woods, where the path intersects with one of only three hearts a' bustin' shrubs (Euonymus americanus) as yet to be found growing wild in Princeton. These three somehow grew tall enough to elude the deer, whose appetite for the plant has kept all other specimens in the woods only a few inches tall.
Also coming as a recent surprise is the University's native prairie planting next to the Firestone Library. It's off to a good start, with the classic eastern grassland species.
This ambitious planting comes after another attempt at a native grassland a few years back, at the psychology building, was mowed down after mugwort, Canada thistle and other weeds were allowed to invade until they became unmanageable. It's good to see the University didn't give up on the concept. This latest planting next to Nassau Street is higher visibility, which could prioritize its maintenance. If there's someone on staff who can provide the early, skilled intervention to keep the weeds out of this complex plant community, it should become a low-maintenance planting whose rich diversity echoes the book collections stored below.
A Mexican milkweed growing next to our carport turned into a miniature monarch butterfly nursery this summer. The monarchs are unpredictable as to which milkweeds they'll actually lay eggs on, but this one plant finally played host to some caterpillars late in the season.
Even harder to predict, oftentimes, is where the fully grown caterpillars will go to make their crysalises, but these were easy to find underneath the shingles of the house. This particular one did not mature into a butterfly,
but a few others did, the evidence being the wispy remains of the chyrsalises coinciding with sightings of a couple monarchs whose flight looked tentative in the way one would expect first flight to be. Reports on fall migration back to Mexico have been promising thus far, though the next post on Monarch Watch should speak to any impact from the hurricanes.
(Note: The Journey North site has more frequent updates, and for NJ, check out the Monarch Monitoring Project in Cape May )
Fall is also a time for biking down to university soccer games, in the process crossing the pedestrian bridge, where the native persimmon trees planted there have finally risen high enough
to push their fruits close against the wire mesh. Not quite ripe when this photo was taken, but there are two home games to go. Catching them when they're ripe would be a fine surprise.
Friday, September 01, 2017
Stalking Monarchs, and Encountering the Other Milkweed Caterpillar
Note: This post serves as a contrast to the horrific flooding in Houston from Hurricane Harvey, showing how stormwater can drive diversity rather than destruction, if we work with nature rather than against it. Unlike cities, the plants that grow in floodplains are built to pop back up within days or hours after a flood and just keep on growing and flowering. Most of these photos were taken in a detention basin, which is an acre-sized depression in the ground, dug to receive storm runoff from the Smoyer Park parking lot. The purpose is to "detain" the rain that hits the asphalt and that would otherwise rush into the nearby stream. Detaining the water reduces flooding in downstream neighborhoods. The detained water then either seeps into the ground or is slowly released through a small pipe into the stream after the floods have receded.
Last year, a collaboration of federal and local governments with the Friends of Herrontown Woods converted this mowed basin into a wet meadow with floodplain plant species that thrive with these periodic pulses of runoff. Without regulations requiring it, the concave setting for this lovely oasis for native plants and pollinators would not exist, and the polluted runoff from the parking lot would have flowed straight into the local stream, contributing to flash floods.
Nature has offered up some surprises, here in the doldrums of summer, when people who aren't somewhere else sometimes feel like they should be. There was the unexpected, and unexpectedly affecting, chance to capture family portraits of black vultures in the previous posts; the weather has been unexpectedly cool; rains have come when needed for the third year in a row, and monarchs have proved resilient, rebounding from their diminishing numbers in recent years. Not many, as yet, but more.
Thinking them elusive creatures, I figured a zoom lens was necessary to capture their image. First came a peekaboo shot on the far side of a thistle at the Smoyer Park detention basin that we converted last year to (mostly) native meadow.
The blooms of Indian grass got pleasantly in the way of this shot.
With nowhere else to go in a sea of soccer and baseball fields, the monarch kept circling around the planted meadow, encouraging patient waiting for a chance at an unobstructed view. Finally, a clear shot from 100 feet away, while it perched briefly on a river birch. Congratulating myself on some success with a powerful camera, I plunged into the meadow to weed out a small clump of foxtail grass that would become way too numerous if allowed to go to seed.
And there, five feet away from my tugging and clipping, landed the monarch, easily photographed with an iPhone,
with a coppery background of Indian grass. That's what weeding a wild garden does--it immerses the gardener, creating opportunities for serendipity to work its magic.
Just across Snowden Lane from the park, behind Veblen House where our Friends of Herrontown Woods group has fashioned a clearing by removing invasive shrubs and wisteria, another sort of caterpillar munched on the leaves of common milkweed, which has prospered in the resulting sunlight.
Displaying proper Princeton colors, the milkweed tiger moth needed every milkweed plant there, and then some. We came back a week later and found every milkweed stripped down to bare stems. The common milkweed's strategy of aggressive underground spreading becomes more understandable, given the voracious appetites of these caterpillars.
Also called the milkweed tussock moth, the caterpillars become more colorful as they grow. As an adult moth, they are said to retain the cardiac glycosides they pick up from eating milkweed, and warn bats of their unpalatability by emitting a click as they fly about at night.
With summer almost over, a first sighting of a monarch larvae--on a purple milkweed, of which there are very few in Princeton, for some reason. Common milkweed can be a bit too aggressive in a garden, and swamp milkweed disappeared from our garden after a few years. Purple milkweed with its showy blooms may be a good alternative, if we can find any seed after the hungry caterpillar is done.
Last year, a collaboration of federal and local governments with the Friends of Herrontown Woods converted this mowed basin into a wet meadow with floodplain plant species that thrive with these periodic pulses of runoff. Without regulations requiring it, the concave setting for this lovely oasis for native plants and pollinators would not exist, and the polluted runoff from the parking lot would have flowed straight into the local stream, contributing to flash floods.
Nature has offered up some surprises, here in the doldrums of summer, when people who aren't somewhere else sometimes feel like they should be. There was the unexpected, and unexpectedly affecting, chance to capture family portraits of black vultures in the previous posts; the weather has been unexpectedly cool; rains have come when needed for the third year in a row, and monarchs have proved resilient, rebounding from their diminishing numbers in recent years. Not many, as yet, but more.
Thinking them elusive creatures, I figured a zoom lens was necessary to capture their image. First came a peekaboo shot on the far side of a thistle at the Smoyer Park detention basin that we converted last year to (mostly) native meadow.
The blooms of Indian grass got pleasantly in the way of this shot.
With nowhere else to go in a sea of soccer and baseball fields, the monarch kept circling around the planted meadow, encouraging patient waiting for a chance at an unobstructed view. Finally, a clear shot from 100 feet away, while it perched briefly on a river birch. Congratulating myself on some success with a powerful camera, I plunged into the meadow to weed out a small clump of foxtail grass that would become way too numerous if allowed to go to seed.
And there, five feet away from my tugging and clipping, landed the monarch, easily photographed with an iPhone,
with a coppery background of Indian grass. That's what weeding a wild garden does--it immerses the gardener, creating opportunities for serendipity to work its magic.
Just across Snowden Lane from the park, behind Veblen House where our Friends of Herrontown Woods group has fashioned a clearing by removing invasive shrubs and wisteria, another sort of caterpillar munched on the leaves of common milkweed, which has prospered in the resulting sunlight.
Displaying proper Princeton colors, the milkweed tiger moth needed every milkweed plant there, and then some. We came back a week later and found every milkweed stripped down to bare stems. The common milkweed's strategy of aggressive underground spreading becomes more understandable, given the voracious appetites of these caterpillars.
Also called the milkweed tussock moth, the caterpillars become more colorful as they grow. As an adult moth, they are said to retain the cardiac glycosides they pick up from eating milkweed, and warn bats of their unpalatability by emitting a click as they fly about at night.
With summer almost over, a first sighting of a monarch larvae--on a purple milkweed, of which there are very few in Princeton, for some reason. Common milkweed can be a bit too aggressive in a garden, and swamp milkweed disappeared from our garden after a few years. Purple milkweed with its showy blooms may be a good alternative, if we can find any seed after the hungry caterpillar is done.
Thursday, March 14, 2013
Monarchs Had Tough Year in 2012
Here's a disturbing headline for you: "Monarch Migration Plunges to Lowest Level in Decades". The New York Times article reports that the overwintering grounds for monarch butterflies in Mexico has dwindled to 2.94 acres. A number of factors are at play here. Increasingly erratic weather due to changing climate, the switch to herbicide-resistant crops in the midwest, which allows eradication of weeds that used to serve as food and habitat, and past logging of the high altitude forests in Mexico.
The warm weather last year sped the Monarchs' travel northward, which correlates with my memory of seeing them in Princeton last summer much earlier than usual. Their multi-generational travel northward in spring/summer is timed with the milkweed, so any change in schedule can affect whether the habitat is ready for their arrival.
In preparation for an upcoming trip, I was surprised to learn that the biosphere reserve where the Monarchs overwinter is just a couple hours west of Mexico City. There are several locations where one can hike up to see them, though El Rosario is the easiest to access. Given the multiple locations, it's strange to hear that the total acreage occupied by the overwintering butterflies is less than three acres.
Though the butterflies cling to the tree branches at night, in February they become active during the day, flying down the mountain slope to a water source, then back up in the evening to roost overnight. Tourists typically stay over night in the small mountain town of Angangueo, then head to the overwintering sites in the morning. Having remained sexually immature during their long fall migration to Mexico, and through much of the winter, the Monarchs finally mate just prior to heading north in late March.
As farm country becomes increasingly an ecological desert, due to reduction in fallow areas and increased spraying of weeds, urban areas become all the more important for sustaining species like the Monarch. Looks like starting new plants of the local swamp milkweed will be part of my "managing water in the landscape" course at the Princeton Adult School this spring.
Carolyn Edelmann, who has a far-ranging nature blog, sent me this link to a 6 minute video about the Monarchs' migration and overwintering site.
The warm weather last year sped the Monarchs' travel northward, which correlates with my memory of seeing them in Princeton last summer much earlier than usual. Their multi-generational travel northward in spring/summer is timed with the milkweed, so any change in schedule can affect whether the habitat is ready for their arrival.
In preparation for an upcoming trip, I was surprised to learn that the biosphere reserve where the Monarchs overwinter is just a couple hours west of Mexico City. There are several locations where one can hike up to see them, though El Rosario is the easiest to access. Given the multiple locations, it's strange to hear that the total acreage occupied by the overwintering butterflies is less than three acres.
Though the butterflies cling to the tree branches at night, in February they become active during the day, flying down the mountain slope to a water source, then back up in the evening to roost overnight. Tourists typically stay over night in the small mountain town of Angangueo, then head to the overwintering sites in the morning. Having remained sexually immature during their long fall migration to Mexico, and through much of the winter, the Monarchs finally mate just prior to heading north in late March.
As farm country becomes increasingly an ecological desert, due to reduction in fallow areas and increased spraying of weeds, urban areas become all the more important for sustaining species like the Monarch. Looks like starting new plants of the local swamp milkweed will be part of my "managing water in the landscape" course at the Princeton Adult School this spring.
Carolyn Edelmann, who has a far-ranging nature blog, sent me this link to a 6 minute video about the Monarchs' migration and overwintering site.
Monday, November 24, 2014
Strange Goings On With Monarchs
Things are getting a little weird with this year's monarch butterfly migration. The Journey North website (they cover the journey south as well) is the only source of news I've found thus far, and their latest post is a puzzler. The reporter down in Michoacan, Mexico had found a small batch of butterflies clustered on a couple trees on the traditional days of arrival during the Day of the Dead, Oct. 31 to Nov. 2. Millions more were forecast, but as of Nov. 11, they hadn't arrived. Here's part of the report:
Tamaulipas, according to google maps, is nine hours northeast of the traditional wintering grounds for the monarch. My concern has been that the migration behavior is somehow dependent on massive numbers, and that the migration could begin to break down if the population drops too far.
The Corn Snafu Deepens
Another twist on the decimation of monarch habitat due to Roundup Ready corn:
Most farmers have switched to Roundup Ready corn and soybeans, due to higher yields. Marginal lands and roadsides previously allowed to grow habitat conducive for monarchs have been returned to cultivation. But NPR reports that the massive corn harvest this year could actually make farmers more dependent on government subsidies. A corn glut outstrips demand, lowers prices, farmers don't get a return on their heavy investment in seed, fertilizer and pesticides, and government price supports kick in. Meanwhile, trains are increasingly being used to transport oil, causing the risk of spoilage to increase as it becomes harder to get the corn and soybeans to market.
In other words, a situation unhealthy for monarchs is proving problematic for farmers as well. For anyone curious about how or whether the government should intervene, this article makes for an interesting read.
"He told me that in El Rosario no colony or even a cluster has been formed yet, and only an average quantity has been observed overflying the area.
He confirmed the impressions that the way the Monarchs are arriving is very unusual and, being optimistic, it may be that they are flying too high up.
Last, he told me that they have news that the massive colonies are possibly coming from the state of Tamaulipas."No updates since then. I want to say, "Come in, Michoacan. Do you read me? Over."
Tamaulipas, according to google maps, is nine hours northeast of the traditional wintering grounds for the monarch. My concern has been that the migration behavior is somehow dependent on massive numbers, and that the migration could begin to break down if the population drops too far.
The Corn Snafu Deepens
Another twist on the decimation of monarch habitat due to Roundup Ready corn:
Most farmers have switched to Roundup Ready corn and soybeans, due to higher yields. Marginal lands and roadsides previously allowed to grow habitat conducive for monarchs have been returned to cultivation. But NPR reports that the massive corn harvest this year could actually make farmers more dependent on government subsidies. A corn glut outstrips demand, lowers prices, farmers don't get a return on their heavy investment in seed, fertilizer and pesticides, and government price supports kick in. Meanwhile, trains are increasingly being used to transport oil, causing the risk of spoilage to increase as it becomes harder to get the corn and soybeans to market.
In other words, a situation unhealthy for monarchs is proving problematic for farmers as well. For anyone curious about how or whether the government should intervene, this article makes for an interesting read.
Friday, June 20, 2014
Monarch Update
Anyone seen a monarch butterfly yet? You can get the latest update from "Journey North News," and even help track the monarch migration by reporting any sightings in our area. Their June 19 update says that, though the monarchs reached their north central breeding range four weeks ago, there have been no sightings of eggs as yet in the northeast U.S.. Their map shows one sighting reported in New Jersey, but it's not clear where. There's a good map here showing how important the midwest is to the survival of monarchs, and how that is also the area where Roundup-ready corn has obliterated much of the milkweed the monarchs have long depended on for raising the next generation.
Keep an eye out, and consider reporting any sightings.
Keep an eye out, and consider reporting any sightings.
Tuesday, August 01, 2017
Coneflower Attracts Monarch and Much More
Typically, my random butterfly sightings don't go much beyond a tiger swallowtail fluttering in the distance. But on July 19, the purple coneflowers in the frontyard raingarden drew a diverse crowd, including this beautiful monarch. This sighting added to a few sightings elsewhere to suggest that monarchs are rebounding from a couple very tough years in which the overwintering area they occupied in the mountains of Mexico dropped to only a few acres. The blog at monarchwatch.org confirms that they are having a comparatively good year. The magnificent monarch with its matchless migration will always be vulnerable, particularly given the destabilizing effects of climate change, the loss of milkweed in farm fields now that Roundup-Ready corn and soybeans allow elimination of weeds, and the ongoing threats to the evergreen forests the monarchs congregate in every winter. There's a lot more work to do to make their population more resilient, but it's heartening to see them on the upswing.
A black tiger swallowtail in particularly good condition.
This looks to be a variegated fritillary,
with a different pattern on the underside.
A skipper,
a bumblebee, of which there are many species.
It was an oak in the backyard that attracted this moth, possibly a tulip tree beauty moth.
A few days later, we were back to the tiger swallowtail.
Saturday, March 21, 2015
Monarch Update -- March, 2015
There's a drama going on right now, some 2000 miles south and west of here, that will affect our summer to come. Though we're still caught in snow, the monarchs are struggling to begin their journey north from their overwintering sanctuary in the mountains west of Mexico City. I say "struggling" because they were doused by two days of heavy winds and rains just when they would normally head north en masse.
Journey North on learner.org provides weekly updates that described bustling activity in the first half of March as the Monarchs flew in crowded masses on the forested slopes, then mated prior to beginning migration. Though last summer's ideal conditions allowed the population to rebound somewhat from the previous year's record low, numbers overwintering were still only a fifth of what is considered average--the whole eastern migratory population covering a mere three acres. This map shows how the monarchs are concentrated in El Rosario, the main tourist location, with the rest scattered at various other locations nearby.
With the passenger pigeon the stuff of legend, it's remarkable to live in a time when a species still masses in such numbers that a March 5 update can still say
Five decades ago, we didn't even know where the Monarchs overwinter. Only when things start to go wrong does one have to start figuring out how something works, whether it's a car engine, one's body, or a wondrous annual migration. What once was dispensed free of charge by a generous nature now might not survive without human intervention.
Working in local habitats, I've seen what nature can do when a restored balance unleashes the native growth energy. The Monarchs are one more example of the tremendous capacity of nature to thrive, if only we give it a chance.
Journey North on learner.org provides weekly updates that described bustling activity in the first half of March as the Monarchs flew in crowded masses on the forested slopes, then mated prior to beginning migration. Though last summer's ideal conditions allowed the population to rebound somewhat from the previous year's record low, numbers overwintering were still only a fifth of what is considered average--the whole eastern migratory population covering a mere three acres. This map shows how the monarchs are concentrated in El Rosario, the main tourist location, with the rest scattered at various other locations nearby.
With the passenger pigeon the stuff of legend, it's remarkable to live in a time when a species still masses in such numbers that a March 5 update can still say
"The monarchs would come out of the trees each time that cumulus clouds covered the sun. They reached almost unbelievably dense numbers, flying out over the llanos. The trees were nearly emptied at such times. Literally every cubic foot of air held at least one monarch."A report of "Massive mating..." comes on March 12. But the next week's report is less sanguine. By March 16, the leading edge of the migration typically crosses over the Rio Grande into Texas, but this year the departure has been delayed. A March 19 update reported that cold weather is delaying departure, and "Terrible weather at the sancturies" was reported on March 16, as heavy rains and strong winds plagued the sanctuary for two days straight.
Five decades ago, we didn't even know where the Monarchs overwinter. Only when things start to go wrong does one have to start figuring out how something works, whether it's a car engine, one's body, or a wondrous annual migration. What once was dispensed free of charge by a generous nature now might not survive without human intervention.
Working in local habitats, I've seen what nature can do when a restored balance unleashes the native growth energy. The Monarchs are one more example of the tremendous capacity of nature to thrive, if only we give it a chance.
Friday, September 05, 2014
Milkweeds Mowed at Tusculum
An earlier post entitled Searching for Monarchs in Princeton mentioned spotting a monarch in a field packed with common milkweed over at Tusculum--the former estate of John Witherspoon on Cherry Hill Road. Here's what that field looked like a month ago.
And here's what that field looked like just a week or two later. Now, some of the fields at Tusculum are publicly owned, while others remain in private hands. This field is privately owned, and has for decades been managed for hay production. That's a big reason why it's still a field rather than a deeply shaded woodland where milkweed would have little chance to grow.
So the annual mowing can generally be thought of as beneficial, but the timing of it--while monarchs are still in our area, reproducing in preparation for their imminent migration back to Mexico-- is definitely not. I doubt that the current owners or the mowing crew had any idea that the field was important monarch habitat, and that waiting a couple weeks would have saved any monarchs maturing in the field.
It's another example of how important it is to communicate with those who own or manage habitat around town. I've been told that the owners in this case will be contacted, with the hope of shifting the mowing regime next year to benefit the monarchs.
The publicly owned fields at Tusculum have not been mowed, as far as I know, though there as well ongoing communication is required, as is re-evaluation year to year in order to find the optimum timing and frequency for mowing.
Saturday, September 06, 2014
A Morning of Music, Young Minds, and a Monarch
Last month, Martha Friend, the science teacher at Little Brook Elementary who is also very active in summer programming for kids in Princeton, sent me an email in August asking if I could drop by the Pannell Learning Center and do a program on music and nature with some kids in a YMCA camp. I had never heard of the Pannell Center, which is at the corner of Clay and Witherspoon, and wasn't sure how to incorporate music into nature study, but showed up with an open mind and a clarinet.
The kids, under the motivating guidance of class teacher Rosie, had just finished building musical instruments using straws. After hearing their impressive musical offerings from the straws, I explained that I had learned to improvise on clarinet while out in nature, sitting on the steps of a lodge overlooking Lake Michigan, playing a note and listening to its echo come back from a nearby hill. Later, on Ossabaw Island off the coast of Savannah, Georgia, I learned to play one handed so that the other hand was free to swat mosquitoes. It was an early lesson in the challenges of the music business. I told them about the piano tunes I'd written using birdsongs, and demonstrated a few on the clarinet. That was a good segue to head out towards Community Park School to see if there were any birdsongs I could imitate. Lacking any birdsongs along the first few blocks, I filled in with When the Saints.
While we passed by some interesting habitat--a concrete turtle that apparently found the astroturf to its liking--Rosie told me how she had gained a love of nature during visits to her grandparents' farm in Mexico, where she was put to work caring for the animals.
The kids ate lunch while I sought to channel a field sparrow's call through the clarinet. Then we asked the question, where do the pollinators find their lunch? Not much in the lawn beyond a few white clovers. We walked behind the school to where the Community Park Elementary's science teacher John Emmons has planted a miniature meadow.
That's where we saw lots of pollinators feasting, including a monarch--a rare sight this summer. (That's what the kids are looking at in the first photo.)
The back of the school is surrounded on three sides, making a courtyard where there's a lot of growth energy. Even the weeds in this photo (pilewort that not only grows on the ground but also one floor up on the wall) are looking good. Pilewort is a native weedy-looking plant that grows tall and fleshy but whose only ornamental offering is clusters of white seeds that the goldfinches take a liking to.
A plaque in front of a butterfly house expresses the connection between the growth of inner and outer nature.
During the school year, Rosie teaches an after school program called PrincetonYoung Achievers.
After such an inspiring morning spent with the Y kids in a landscape that is nurturing of inner and outer nature, it was time to head home, stopping by the raingarden at Spruce Circle to find it.....bulldozed! Life comes with its mixture of highs and lows.
Tuesday, October 21, 2014
Events This Week: Bees, Monarchs, and Eating Alabama
Tuesday, October 21, Noah Wilson-Rich talks about his book— The Bee: A Natural History, 6pm at Labyrinth Books on Nassau Street
Thursday, October 23, Panel Discussion: Monarch Butterfly: Species in Crisis, 7pm at the Princeton Public Library
Friday, October 24, film, Eating Alabama, 7pm at the Princeton Public Library
The list of panelists for the monarch event is as follows:
Maraleen Manos-Jones, Lecturer (apparently the first non-native to find the monarchs' overwintering location in Mexico)
Michael Gochfeld, Professor, Rutgers University (co-wrote the book Butterflies in New Jersey)
Robert Somes, Biologist, NJ Nongame and Endangered Species Program, DEP. Flo Rutherford, Chief Guide & Caretaker, Butterfly Atrium, World of Wings Museum
Thursday, October 23, Panel Discussion: Monarch Butterfly: Species in Crisis, 7pm at the Princeton Public Library
Friday, October 24, film, Eating Alabama, 7pm at the Princeton Public Library
The list of panelists for the monarch event is as follows:
Maraleen Manos-Jones, Lecturer (apparently the first non-native to find the monarchs' overwintering location in Mexico)
Michael Gochfeld, Professor, Rutgers University (co-wrote the book Butterflies in New Jersey)
Robert Somes, Biologist, NJ Nongame and Endangered Species Program, DEP. Flo Rutherford, Chief Guide & Caretaker, Butterfly Atrium, World of Wings Museum
Tuesday, September 13, 2016
Finally, a Monarch!
Three days ago, a monarch finally came and lingered for a short while in the backyard, moving quickly from one late-flowering thoroughwort to another, gathering nectar for its long journey to Mexico. Several generations removed from the monarchs that flew north from the mountains of Mexico this past March, this individual is part of that special end of the season generation that will fly 2500 miles south and west to where they gather for the winter, west of Mexico City. Unlike the generations that headed north, it will not become sexually mature until next spring.
Monarchs had a modest rebound in numbers last year after their numbers dwindled, largely due to the elimination of milkweed from farm fields and edges since Roundup-Ready corn and soybeans became the norm. There was optimism this year that they could rebound further, but an "unprecedented" ice storm hit their sanctuary in the Mexican mountains in March just as they were leaving. Some had already headed north, but many were killed. That "unprecedented" makes one think of climate change's impact, which makes restoring habitat all the more important.
I had caught a glimpse of three other monarchs earlier in the summer, but none that settled on a flower. Fortunately, there was a 50x canon camera around to capture the fresh beauty of this magnificent insect, poised at the beginning of its long journey.
Monarchs in NJ head south through Cape May, and you can read about those who track their passage and count their numbers there on their blog.
I saw no caterpillars this year. In 2010, we had many on the swamp milkweeds in the backyard. My daughter grew some in a jar.
As a kid growing up in southeastern Wisconsin, I remember a day, probably in the 1960s, when the sky was filled with monarchs heading south. Thousands upon thousands, swirling, dancing, there all day, and then gone. It's one of those magnificent nature-in-abundance memories that feeds a vision for what could be if we nurtured nature's inborn vitality. In Princeton, there was a field full (in the tens or hundreds rather than thousands) of monarchs in 2007, feeding on tickseed sunflowers, at that sharp bend in Quaker Road, near the canal. Tickseed sunflowers (Bidens sp.) are annuals, and appear to have given way to other species out there.
Friday, June 26, 2015
A Milkweed-Lined Bicycle Ride To DR Greenway
I broke through one of those self-imposed glass ceilings the other day. No broken glass scattered everywhere, just a new feeling of empowerment, in that pedal power conveyed me with surprising ease to a destination I would normally jump in a car to reach. The destination was a reception for a new art exhibit entitled Color in Nature, at DR Greenway out Rosedale Road. The bikeride unexpectedly offered a nice warmup to the theme of the exhibit, with milkweed drawing the camera's eye.
Interesting to see how common milkweed, which normally toughs it out in fields and along road embankments, is being featured in front of a million dollar home on Cleveland Lane, mixing it up with tonier perennials with a well-groomed boxwood hedge as background. Maybe the homeowner is expecting some distinguished guests--royalty perhaps, or a Monarch.
Even without a tailwind, it seemed a breeze to get out to Greenway Meadows, and with a bike one can get off Rosedale early and take the scenic route through the park, with the rec department's pile of mulch standing guard over the vista just beyond.
With cool season grasses maturing in early summer, the milkweed stands out. Monarch butterflies depend on favorable winds to make their cross-continental migrations, but it's the strength and resilience of the common milkweed that has served as a metaphorical and nutritional "wind beneath their wings" through the millenia.
They line the pathway, like cheering crowds.
No monarchs yet, but a beetle or two.
Lower slung and less common is another milkweed, the butterflyweed (Asclepias tuberosa), which has a growth habit akin to orange broccoli.
No habitat restorationist can look at a meadow and not see something that needs tending to, like this incipient presence of porcelainberry, but maybe an annual mowing limits its spread.
And at the destination, art, a cool drink, some familiar faces. Bicycling has a reputation as being secondary in convenience to cars, but sometimes it feels first class.
(Check out another edge-of-town destination this Sunday, June 28 from 1-4pm, as they close off Quaker Road for the annual Ciclovia.)
Interesting to see how common milkweed, which normally toughs it out in fields and along road embankments, is being featured in front of a million dollar home on Cleveland Lane, mixing it up with tonier perennials with a well-groomed boxwood hedge as background. Maybe the homeowner is expecting some distinguished guests--royalty perhaps, or a Monarch.
Even without a tailwind, it seemed a breeze to get out to Greenway Meadows, and with a bike one can get off Rosedale early and take the scenic route through the park, with the rec department's pile of mulch standing guard over the vista just beyond.
With cool season grasses maturing in early summer, the milkweed stands out. Monarch butterflies depend on favorable winds to make their cross-continental migrations, but it's the strength and resilience of the common milkweed that has served as a metaphorical and nutritional "wind beneath their wings" through the millenia.
They line the pathway, like cheering crowds.
No monarchs yet, but a beetle or two.
Lower slung and less common is another milkweed, the butterflyweed (Asclepias tuberosa), which has a growth habit akin to orange broccoli.
No habitat restorationist can look at a meadow and not see something that needs tending to, like this incipient presence of porcelainberry, but maybe an annual mowing limits its spread.
And at the destination, art, a cool drink, some familiar faces. Bicycling has a reputation as being secondary in convenience to cars, but sometimes it feels first class.
(Check out another edge-of-town destination this Sunday, June 28 from 1-4pm, as they close off Quaker Road for the annual Ciclovia.)
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