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About Evan Barrientos

Evan Barrientos is a naturalist and conservationist living in Fort Collins, Colorado. His passion is using photography, videography, and writing to inspire people to explore and care for nature. He works for the National Audubon Society as the communications and marketing manager for Colorado, Wyoming, and Utah.

The Gluttonous Crab Spider

The following post was written by Evan Barrientos, of our two Hubbard Fellows for this year.  Evan is a talented writer and photographer, and if you enjoy this post, I encourage you to check out his personal blog as well.  …For the record, I did not in any way encourage Evan to photograph or write about crab spiders.  This is despite my well-known affinity for them and my personal inability to walk past one without taking its portrait.

Over this summer I’ve tried to focus on photographing the prairies with a wide angle in order to show what the landscape looks like, but sometimes it’s just impossible to resist delving into the tiny details and dramas of prairie microfauna. One morning in June I was admiring the spiderwort flowers when I stopped to photograph a crab spider (Thomisidae sp.) sucking the juices out of a hoverfly (Syrphidae sp.) that she had caught.

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If you’ve been reading this blog for a while, you’ll know that many crab spiders hide on flowers and ambush insects as they stop for a drink of nectar (similar to ambush bugs). Some crab spiders can even change their color to yellow or white in order to match the flower they are on, but this spider didn’t seem to need that trick. To my great surprise, a second hoverfly was brave, hungry, or stupid enough to land on the same flower while I was taking photos. Maybe it thought the spider would be content with the hoverfly already in her fangs. It was wrong.

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The spider quickly honed in on the intrepid visitor, even though her fangs were already more than full. What she planned to do with the second hoverfly, I don’t really know, but  watch what happened when the clueless hoverfly strayed a little too close:

 

Apparently, this hoverfly liked adrenaline, because it continued to gorge itself on delicious spiderwort nectar for a few more moments and eventually flew off to safety. Thinking the spectacle had ended, I started to pack up my camera gear, but before I could, another fly landed on the flower!

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As you can see from the photo sequence, the spider was once again too slow to catch the visitor. I watched her for a little longer, but eventually left to photograph a bird singing nearby. I came back a few minutes later to check on the spider and found yet another surprise.

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In the five minutes I was away, the crab spider had finished eating the first hoverfly and caught another one. I don’t know if spiderworts are irresistible to flies, or if hoverflies are terrible at spotting white crab spiders on purple flowers, but this spider sure was lucky that morning!

Encounters like this remind me how important it is to pause every once in a while and notice the little details. When I do this I’m often amazed by how much is going on around me and how much I would have missed it if I hadn’t stopped. Wide-angle views certainly have their place too, but to fall in love with prairies you really need to stick your nose in them at times.

Hubbard Fellowship Blog – Stewardship Positivity

The following post was written by Evan Barrientos, of our two Hubbard Fellows for this year.  Evan is a talented writer and photographer, and while you’ll get the chance to see some of his work here during the next year, I also encourage you to check out his personal blog.

Although I’ve been participating in land management since high school, I still find myself learning so much from it, although perhaps not in the way you’d expect. Yes, I’ve learned several management techniques and strategies since starting the fellowship, but the lessons I consider most valuable are the ones that teach me how to think about land stewardship. Let me explain.

If you were a Hubbard Fellow during the second week of June, you would probably find yourself riding an ATV back and forward across one of our restored prairies, searching for the fluffy purple flowers of Musk Thistle. Upon spotting a thistle, you would pluck off all the flowers, thrust your spade through the base of the thistle with a satisfying crunch, pull out the plant, and then knock the dirt off of any uprooted roots. Over the next three weeks you would repeat this process thousands of times until you had covered every inch of all 14 of our Platte River properties and their 4,000+ acres. Then you would check them all again.

We celebrated the end of thistle season by burning the flowerheads in a bonfire.

When we finally finished musk thistles we celebrated by burning the seed heads that we had collected in a bonfire.

This may sound like exhausting and repetitive work, and it can be, but that wasn’t the hard part for me. The hard part was staying positive when it felt like I wasn’t doing enough. I felt this way when I returned to a prairie for its second thistle check and found piles of thistle seed below “zombie thistles” (thistles that flowered and produced seed after I chopped them because I left too much dirt on the roots). Or when I walked through a prairie that I had already checked twice and still found thistle stalks that had already released their seed to the prairie. Most of all, deciding to spend July 2nd chopping thistles before they released more seed instead of spending time with my family forced me to think hard about my role as a land steward.

As a land steward you develop a strong connection to the land you are working on. Seeing a healthy community of native species flourish on your property is extremely gratifying, but it also pains you to see invasive species spreading. Land stewards almost always have more tasks than they can complete and it’s very easy to let this make them feel overwhelmed and stressed, but it doesn’t have to be this way. After reflecting upon the first month of my fellowship, here are three lessons I’ve learned so far about being a happy steward:

  1. I cannot control nature. I am a steward, not a god. Expecting myself to control exactly which species grow on a property will only bring me frustration. The role of a land steward is not to dominate the forces of nature, but to regulate its extremes. Translation: my job isn’t to exterminate musk thistles, but to prevent them from outcompeting other species and lowering overall biodiversity.
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A Regal Fritilary (Speyeria idalia) on Musk Thistle (Carduus nutans). Like it or not, Musk Thistles have become part of the local ecosystem. Being a steward doesn’t mean exterminating thistles, but keeping them under control.

  1. There is no endpoint. A land steward’s work is never “done.” My job isn’t to “fix” a property; it’s to guide the property toward a range of conditions that meet our management goals. Removing thistles from the same property year after year does not mean that we are failing at our job of “restoring” the prairie. On the contrary, it means we are doing our job of actively fostering biodiversity.
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Common Mullein (Verbascum thapsus) is non-native, but also non-invasive. We don’t remove it because it doesn’t lower plant diversity.

  1. Stewardship should be viewed as a positive action, not negative. There are two very different ways to look at land management. From one angle, a day spent chopping thistles could be considered a violent battle against an evil enemy; a task to evict an unworthy invader. From another angle, it could be considered a process of creating beautiful and biodiverse prairies. In my experience, viewing invasives as enemies just leads to exhaustion and bitterness. Only by viewing stewardship as a process of care and creation, in my opinion, can one generate the tremendous amount of energy needed to take on its many tasks.
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Black-eyed Susans (Rudbeckia hirta) in the Platte River Prairies, Nebraska.

Land stewardship is an essential component of conservation and it’s imperative that we do it well. Unfortunately, it also is a very demanding job that can burn you out if you’re not careful. I’m happy to say that the first month of this fellowship taught me some very important lessons about setting realistic expectations and viewing my work as a positive contribution to prairie biodiversity. It’s important to be a happy steward!