Emergence of Life in a Wetland

After many years of wanting to, we finally installed some solar-powered pumps and livestock water tanks in our family prairie.  (Thanks to the U.S. Fish and Wildlife Service and Nebraska Game and Parks for providing cost-share money!)  Those two water tanks give the cattle nice cool clean water to drink and allow us more flexibility in the way we design our grazing each year.  Most importantly, they allow us to exclude the pond/wetland from grazing so it can start to function as a wetland rather than as a big mud hole for cattle to stand around in.

Because we’ve had good rains this year, the wetland has been pretty full.  That’s nice, but it has also prevented much of the wetland-edge seed I planted from germinating and growing.  Despite that, the recovery of the wetland is well underway.  There is now grass growing right to the water’s edge and arrowhead and other emergent plants are starting to appear in shallow water.  I’ve been spraying the few reed canarygrass plants growing nearby in the hope of preventing that invasive species from taking over the margins of the wetland, and hopefully I can get some more diverse wetland plants to establish there instead.

The pond/wetland at the Helzer family prairie with abundant arrowhead (Sagittaria sp.) in the shallows.

The pond/wetland at the Helzer family prairie with abundant arrowhead (Sagittaria sp.) in the shallows.

My daughter and I went for a walk at the prairie over the weekend and visited the wetland to see what was happening.  As I waded into the shallow water to take the above photo, leopard frogs scattered from my footsteps and red-winged blackbirds scolded me for encroaching upon their territories – very good signs of recovery.  However, looking more closely at the arrowhead plants poking through the water, I found even more evidence of new life.

Abandoned exoskeletons of damselfly nymphs were littered around the wetland.

Abandoned exoskeletons of damselfly nymphs were littered around the wetland.

Adult damselflies fluttered around everywhere, and many of them had apparently just appeared on the scene because the larval exoskeletons they’d just emerged from were stuck to leaves and stems all over the place.

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While I was too late to see the actual emergence of the damselflies, I did manage to find a green darner dragonfly that had just popped out of its larval skeleton and was fluttering its wings and waiting for its body to dry and harden.  I snapped a few pictures of it in place and then carried it over to Anna so she could get a good look at it.

A green darner dragonfly and the larval exoskeleton it had only recently escaped from.

A green darner dragonfly and the larval exoskeleton it had only recently escaped from.

Anna enjoyed getting a close-up view of the dragonfly and even posed for a photo with it.

Anna enjoyed getting a close-up view of the dragonfly and even posed for a photo with it.

After we became a little better acquainted with the new dragonfly, we set it safely on a fence post so it could finish hardening up in the warm sun.  I took a few more quick photos of it on the post and then left it alone.  It was gratifying to see other dragonfly species zipping around nearby too – I’m hoping that’s a sign that a number of other aquatic invertebrates are also colonizing our recovering wetland.  It should be fun to watch the changes in the coming years.

Our new friend on the top of a fence post.

Our new friend on the top of a fence post.

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Photo of the Week – August 29, 2013

One of the great things about living in Aurora is that Prairie Plains Resource Institute has done some very nice prairie restoration projects right on the edge of town.  That works out really well for me on days when I don’t have time to go out to our Platte River Prairies, but can’t stand to stay inside because conditions are perfect for photography.  Last Friday was one of those times.

When I looked out my window at about 8:15 Friday morning, there were nice diffuse clouds covering the sun and only light winds blowing.  Knowing that I had to be on a conference call by 9am, I sprinted to the car and headed to Lincoln Creek Prairie (less than a mile from my house).  For about next 20 minutes, I wandered around the tiny restored prairie with my camera, shooting photos of flowers and bugs, and generally enjoying myself.  Within a half hour from the time I left my computer, I was back in the office and ready to join my conference call. It’s a pretty good life.

Here’s a shot from that morning walk:

A praying mantis nymph on rough blazing star (Liatris aspera).  Lincoln Creek Prairie - Aurora, Nebraska.

A praying mantis nymph on rough blazing star (Liatris aspera). Lincoln Creek Prairie – Aurora, Nebraska.

I was surprised to see a small mantis nymph this late in the season, especially because there were some full-grown Chinese mantids nearby (I don’t know what species this nymph is).  The little critter was hanging out near the top of a blazing star plant and eating a small fly when I first spotted it.  As I set up my tripod, it spit out (?) the remainder of the fly and turned to stare at me.  That worked out very nicely for me – but I hope it didn’t miss out on the last part of its meal on my account.

I was enjoying my little interaction with the nymph, but after taking a few shots at this angle, I decide to try a slightly different photo angle.  As I adjusted my tripod, I accidentally dislodged a big grass stem that had been trapped under one of the legs.  The stem whipped around and hit the flower right below the nymph – knocking the nymph into the vegetation below.  I’m sure it wasn’t hurt, but it did kind of spoil the moment.

Oh well, it was time to head back for my conference call anyway…