Bliss. It was warm enough to wear shorts, but the mosquitoes hadn’t
hatched yet, and the spring ephemerals were blooming. Days like that are rare
in the Northwoods. So I kidnapped Mollie, the Cable Natural History Museum’s
new curator, to show her Juniper Rock overlook on the North Country Trail.
In the parking area, two shining clusters of bloodroot flowers spread
their white petals to the sun. We took that as a good sign. After hiking past
numerous small patches of bloodroot we came to a patch of rich woods. Wild
leeks created an emerald carpet on one side of the trail, and a rock outcrop
glittered with blossoms on the other. I scurried from one patch of flowers to
the next with my camera, like following a trail of breadcrumbs. Hepatica!
Spring beauty! Bloodroot! Oh my!
Patches of bloodroot dotted the forest.
While I found both the purple and the white color morphs of hepatica,
all the spring beauties had bright pink pinstripes. I’d just read a post about
pure white spring beauty flowers on the “In Defense of Plants” blog, and was
hoping to see one. Pigments are chemicals, and most pigments do more than just
add color. The white pigments in spring beauty flowers protect them from
herbivory and pathogens. On the other hand, if spring beauties with the pink
stripes can manage to avoid being eaten, they will attract more insects, which
is necessary for cross-pollination and producing viable seeds.
In areas where there are lots of white flowers of other species, the
white spring beauties have even more trouble attracting pollinators and become
even rarer than usual. With all the gleaming white bloodroot plants nearby,
plus white hepaticas, the pink spring beauties had a monopoly on this patch.
Hepatica blossoms can be white or lavender.
I bent down to photograph one pin-striped blossom, and noticed a pale
green spider clinging to the underside of the flower cup. “A crab spider,” I
exclaimed to Mollie, “it’s lying in wait for an early spring bee!” Then as I
leaned in closer for a second photo, I laughed out loud. The spider already had
a little bee clasped in its jaws. I love when Nature does what you predict. And
equally, I love when it surprises you. This was a little of both.
The bee sported a halo of short, white hairs around its thorax, along
each skinny leg, and ringing each segment of its black abdomen. It must have
been a female with all of those hairs ready to collect pollen to provision her
larvae. The fuzz can also hold in heat produced by its wing muscles and help
these early season insects fly even on chilly days.
Crab spiders wait on flowers to ambush pollinators.
This little lady looked similar to the hairy-banded mining bee we’ve
highlighted in our new museum exhibit, but our Bee Buddy doesn’t emerge from
its ground nest until late July when the asters bloom. Most of its cousins are
early spring emergers, though. I used the WI Wild Bee Guide (https://energy.wisc.edu/bee-guide/) to try and key out
the bee from my photo. I narrowed it down to a group of black and black-striped
bees that includes mining, sweat, and cellophane bees, which the website noted
“is a
large group of bees from 4 different genera that are often difficult to
distinguish from each other.”
The
crab spider was equally wonderful. As with bees, female crab spiders are bigger
than the males. She can change colors to match her flower, too—from white to
yellow to green—although the change takes several days. Crab spiders don’t
build webs; they ambush unsuspecting pollinators with their crab-like front
legs. Once prey is caught and subdued with venom, the spider holds its lunch
with just her jaw while she slurps up the insect smoothie her enzymes have
blended up.
I
left the woods in an even deeper state of bliss than I’d entered it. Not only
was it a beautiful day, but I’d observed some exciting natural drama.
The
rest of my evening was spent getting ready for my summer sabbatical. As I
packed natural history books about Alaska into a tub, I chuckled at how much my
reading habits have changed since I was a kid. You couldn’t have bribed me to
read nonfiction science books back then. I thought they were boring. I wanted
stories with adventure, resourcefulness, mysteries, and magic. Laura Ingalls Wilder,
The Boxcar Children, Anne of Green Gables, American Girls, The
Bobbsey Twins, and Trixie Belden
were my staples. I wrote fiction, too, either set in the pioneer days or
magical kingdoms. I loved nature, and my heroines did too. They used medicinal
herbs to cure people or conjured up the powers of nature to defeat evil. But
today I write only nonfiction and mostly read it, too.
So what changed?
Somewhere along the way I realized that the stories in nature are as good
as or better than anything we can invent. Spring beauty uses magic potions to
defend itself and to attract suitors. Harried mothers are caught in the traps
of a color-shifting villain (who turns out not to be evil). Don’t even get me
started on the stories of parasites and symbiotic partners.
But none of those stories are apparent without careful observation,
which is often carried out by dedicated naturalists, or by scientists
conducting experiments. Adventure. . .resourcefulness. . .mysteries. . .magic.
. .I still want to read and write about those themes; I’ve just discovered that
I don’t need to invent anything. Nature has already done it for me. Scientists
are busy translating, and I’m off to write those stories!
Special Note: Emily’s book, Natural
Connections: Exploring Northwoods Nature through Science and Your Senses is
here! Order your copy at http://cablemuseum.org/natural-connections-book/.
For 50 years, the Cable Natural History Museum has served to
connect you to the Northwoods. Come visit us in Cable, WI! Our new exhibit:
“Bee Amazed!” opened on May 1, 2018.
No comments:
Post a Comment