Gossamer Tapestry

Reflections on conservation, butterflies, and ecology in the nation's heartland

Friday, January 10, 2014

Table Mountain


Table Mountain rises to an elevation of over 3,500 feet right at the edge of urban Cape Town.  Protected as a national park, it is a popular hiking destination.  The flat summit is accessed either through one of a variety of trails or via a cable car.  Leon and I planned to hike up and then return by cable car.  We chose one of the more popular routes and ascended via Platteklip Gorge.


The Trailhead

We were most fortunate with the weather throughout our South Africa trip, and this day was no exception- though the weather was on the warm side.  Our hike took us through some stunningly beautiful coastal fynbos.  I was becoming accustomed to seeing geraniums grow wild in their native habitat.  On this day we would also see gladioli and proteas- and a host of other plants that I could not recognize at all.  I continued to marvel at the incredible beauty of fynbos, and quickly found it becoming one of my all-time favorite ecosystems.


Fynbos on Table Mountain


Geranium (Pelargonium)


Gladiolus


Protea

Plattenklip Gorge is visible from the trailhead as a narrow notch in the steep escarpment near the summit.  The trail switchbacks up the mountainside, narrowing sharply as it passes through the gorge.  We welcomed several pauses in the cool shade provided by the cliffs that line the gorge.  Butterflies were plentiful but frustrating on this trip.  On the hike up I saw at least a dozen different species.  None were landing, as the very warm air was keeping them all extremely active.



Plattenklip Gorge as seen from the trailhead


View from the gorge

As its name implies Table Mountain is flat at the summit.  The vegetation is surprisingly different from the slopes below.  Gone are the lush shrublands of proteas and other beautiful flowering plants.  The ground is rocky, the vegetation short and sparse.  Bright blue lizards scampered over the rocks.


Summit of Table Mountain


Greetings from the Welcoming Committee

The views out over Cape Town and the Atlantic Ocean are inspiring, and the challenge of the steep climb up allows one to arrive with a sense of having earned the views.



It was at the summit that I was able to- with difficulty- snap a few butterfly photos.  I saw only one Protea Orange, a beautiful member of the lycaenid family whose caterpillars feed on the eponymous plants.


Protea Orange (Capys alphaeus)

After spending a couple of hours at the summit, it was time to return.  At this point we discovered the downside of visiting this popular spot on a gorgeous weekend day.  We had to wait nearly two hours to catch the cable car back down.  Still, the trip was most worthwhile.  I'd gladly make the hike again, though I would probably do so during the week.


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Wednesday, January 01, 2014

Journey to Cape Town



I've neglected my blog for a long time- but I really want to do a few posts about my recent trip to Cape Town.  I was originally scheduled for a conference.  The conference was cancelled, but Leon and I have long wanted to see South Africa, so off we went.

The flight is reaaaaallly long.  We went via London with a travel time of 23 hours.  We arrived in Cape Town at 7 in the morning on a gorgeous sunny day. We checked into our hotel, and rather than napping to releive jet lag, we jumped right into our rented powder blue Fiat and headed east along the coast of False Bay.


There are spots to pull of of the road for whale viewing.  We didn't see any whales, but we did get a great introduction to fynbos (FEN-bows), the predominant native ecosystem in this part of South Africa.


A coupl1e of cool things about fynbos:  it's one of the most botanically diverse ecosystems on the planet and many of the plants are very familiar house and garden plants.  We saw tons of varieties of geraniums (actually pelargoniums) growing in their native habitats.


Of course there were also butterflies.  We didn't see many on this day. but I did get photos of the Burnished Opal, a South African specialty.



We spet the afternoon driving along the coast, strolling on the rocky shore and enjoying the sunshine, flora, and fauna.  It was an auspicious start to the trip.  Leon was even reasonably patient with me as I learned to drive on the left.



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Saturday, April 28, 2012

Questions in Dixie


I'm in South Carolina.  I'll blog more later about the travel and my impressions of the state.  One thing that I noticed right away is that the population boom of Red Admirals that we have at home does not extend to this part of the country.  Oh, sure, I've seen a few Red Admirals- but they have gotten lost in the hoards of thousands and thousands of Question Marks.


 I'm not familiar enough with this region to know whether this abundance is unusual, but it has the feel of a population boom to me.  This species is abundant far out of proportion with other species at the moment.  Dirt roads in the area ar filled with thousands of individuals puddling in the gravel.

I'm seeing a lot of other cool stuff as well.  More to come!

This American Lady was lost in the hige crowd of Question Marks


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Wednesday, April 25, 2012

A bit more on the Admiral Invasion


A lot of folks have been asking follow-up questions regarding the Red Admiral population boom.  Is it happening because of the mild winter or the freakishly warm weather we had in March?  Might it be a sign of global climate change? 

Red Admirals, along with a whole bunch of other butterfly species,  started showing up extremely early this year.  I had seen one by the third week of March.  That early arrival is almost certainly a result of the early warm weather.  I'm not so sure about the huge numbers being a result of the mild winter and hot spring, however.


This is an American Lady (Vanessa virginiensis).  It's a close relative of the Red Admiral- they are both in the same genus.  And like the Red Admiral, it started appearing very early.  I've been seeing them for weeks on the grounds of the Nature Museum in Chicago, where this one was photographed.  This species has not, however, undergone a population boom.  Numbers are very typical of what I have seen in in other years- just a few weeks ahead of schedule.  Whatever is happening to cause the large numbers of Red Admirals seems, at least for the moment, to be particular to that species.


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Sunday, April 22, 2012

Admiral Invasion


Depending on where you live, you may or may not be experiencing a huge invasion of Red Admiral butterflies.  I have gotten reports from friends and colleagues in Iowa, Wisconsin, Michigan, upstate New York and Ontario confirming the influx.  On the other hand, I was in eastern Massachusetts just a week ago and saw none, so it hadn't made it that far east.  They are migrating up from their wintering grounds in the deep South.  The mild winter and warm spring are probably responsible for their early arrival, and may or may not be responsible for the huge numbers.  This species is well known to undergo occasional population booms. 

Yesterday I went out to Bluff Spring Fen.  With temperatures hovering around 60, it was on the cool side for butterfly activity.  Bright sunshine, however, allowed them to warm up via basking and the admiral invasion was much in evidence.

Nettles (Urtica dioica) at Bluff Spring Fen
There were scores of butterflies in this open area. 
Red admiral caterpillars eat plants in the nettle family.  We have several large patches of stinging nettles at the Fen.  There were dozens and dozens of admirals flying in the patches.  I saw numerous females laying eggs.


Given the cool temperatures and abundance of individual butterflies, I thought that I maght have an especially easy time with photography. My hopes that the butterflies would be more sluggish and approachable were not to be realized.  I got photos of butterflies on bad backgrounds.


I got shots of bad specimens.


I did manage to get a couple of photos that I was reasonably happy with.  I saw a couple of other species out and about yesterday, as well.  There were a bunch of clouded and orange sulphurs.





The real story continues to be the admirals.  I don't know how long it will last, but I've never this species undergo such a huge population explosion.

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Sunday, April 15, 2012

Brown County Camping Trip- With Butterflies

Our beautiful home away from home

Two weekends ago, Leon and I took a long weekend and headed south to Brown County, Indiana for some camping. It was a trip down memory lane. We used to go camping there on a regular basis with the gay and lesbian outing club- but we haven't been back since the late 1980s. We drove down on Saturday morning, arriving just in time for the requisite lunch at Nashville House, a country-style restaurant that features amazing yeast raised, deep fried biscuits with apple butter. Health food it isn't.

Leon with Flowering Dogwood

Rattlesnake Master (Goodyeara pubescens)
An orchid whose foliage is much prettier than its flowers

The weather was uneven during the trip. Although the drive down was cloudy, we began out hike in beautiful sunshine with temperatures in the mid 60s. The trees were not yet leafed out, but the dogwoods and redbuds were in full bloom, as were many wildflowers. It was splendid. We began seeing butterflies as soon as we parked the car.

Zebra Swallowtail (Eurytides marcellus)

Juvenal's Duskywing (Erynnis juvenalis)

Spicebush Swallowtail (Papilio troilus)

We camped near a pretty stream. Dinner was pasta with pesto and Raspberry Newtons. Sometime during the night, I was awakened by the flicker of what I at first thought was somebody approaching the tent with a flashlight. The rumble of thunder followed moments later. It rained with thunder for the rest of the night and for much of Sunday morning. We ended up in the tent until about 11 waiting out the rain.

Pretty Stream

A gloomy, rainy Sunday morning

During our late breakfast the sun emerged. Our camping site was was quite beautiful. In addition to the stream, we were treated to a profusion of spring wildflowers, including all 3 colors of violets.

Purple Violets

White Violets

Yellow Violets

Sunday afternoon, we left our backpacks in camp and took a day hike. It ended up to be a bonanza of both butterflies and wildflowers. We saw several clumps of dramatic scarlet fire pinks.

Fire Pinks! (Silene virinica)

Before departing Chicago, I made a shopping list of early spring butterflies that I had hoped to photograph on this trip. Chief among them were Henry's Elfins and Falcate Orangetips. Although I only got a brief glimpse of the elfin, the orangetips put on quite a show.

Falcate Orangetip (Anthocharis midea)
Only the males have bright orange wing tips.

Orangetips are hard to photograph, as they land infrequently- and then only fleetingly. I wasn't pleased with even the best image of a male that I was able to get. I got luckier with a female. They are far less frequently seen then the males- this was the first time I had ever encountered a female of this species. She was being intensely courted by a male- who she was rejecting by raising her abdomen. So intent were they on the courtship display that I was able to approach closely for a crisp photo.

Female Falcate Orangetip
Translation of her raised abdomen:
Buzz off, creep!

Sunday night dinner was an old camping favorite- a pasta and cheese dish nicknamed aquarium gravel due to its appearance. Monday we enjoyed a leisurely drive back home. It was a wonderful weekend that included opportunities to see a total of 17 butterfly species.

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Sunday, March 25, 2012

Sand Prairie Scrub Oak


Leon and I had planned to take Friday off for a long weekend camping trip in Brown County, Indiana. Unfortunately, Leon had been fighting a cold most of the week. When I got home Thursday evening, he informed me that his cold had settled into his chest as a bacterial infection and that he would need to see the doctor the next day. Thus ended the camping trip.

Saturday was gorgeous. We have been having unseasonably warm weather and spring is at leas a month ahead of schedule this year. Leon was feeling a bit better, so we decided to check out a nature preserve called Sand Prairie Scrub Oak down by Peoria.


Sandy Oak Woodlands

The rpeserve was further away than I realized, so we didn't arrive until late afternoon. It sandy oak woods interspersed with sand prairie. The latter contains lots of prickly pear cactus.

Sand phlox was abundant and in full bloom. Most of the flowers were white, with an occasional bright pink individual.

Sand Phlox - Typical Flowers


The Pink Form of Sand Phlox

The wild plums were blooming and putting on quite a show. We also saw lots of insects, including the year's first tiger beetle ( a green six-spotted tiger beetle).


Thicket of American Plum

Like everything else, the butterflies are very early this year. I saw seven species on Saturday, including a beautiful, fresh tiger swallowtail.


Tiger Swallowtail

The highlight of the day was getting to see a butterfy that in sand prairies. Previously, I had only ever seen Olympia Marbles on the shores of Lake Michigan. On this trip, I would see several in the a beautiful nature preserve in the sand country along the Illinois River.


Terrible photo of an Olympia Marble
I'm still glad I got to see it

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