Images

While the lavendar color of the Tamarisk plant is nice to see, the plant is actually an invasive species. The Tamarisk Beatle was released in 2005 to combat the spread of the plant and has been quite successful in doing so.

Tom Minckley and Nick Hammond study the shore for plant and animal species and to enjoy the beautiful landscapes as they pass by.

Flat Canyon petroglyph panel in Desolation Canyon, Green River, UT during the Powell 150 SCREE-USGS expedition, June 2019

Anya Metcalf was the insict expert on this trip. We started pointout out and catching bugs for her to identify. This one crawled across camp during our podcast recording. It turned out to be a Golden Stonefly with a small pseudoscoprion attached to the mandlible using the fly for dispersal.

Our first day was full of uncertainty about what we would experience. Many of us did not have experience on the river (although Anya Metcalf, in the photo, did). We left the impressive cliffs and topography of Split mountain wihout knowing what lay ahead, expecting less exciting topography, but we were all proven wrong about the Uinta basin.

Most of our days had this view- looking back on the river and having conversations with the rafter rowing the boat and whomever else we shared space. We were constantly surprised at the beautiful views and the impressive cliffs, which often housed cliff swallows.

Leetown Science Center researcher, Dr. Deborah Iwanowicz, is preparing honey bee for analysis of the Lake Sinai Virus (LSV).   This type of work is important to society as pollinators are critical for sustaining healthy ecosystems and prosperous human populations.

Leetown Science Center researcher, Dr. Deborah Iwanowicz is collaborating with Northern Prairie Wildlife Research Center.  Dr. Clint Otto, who has the lead on a project designed to identify and improve forage for honey bees on USDA Conservation Lands.  Dr.

Leetown Science Center researcher, Dr. Deborah Iwanowicz, is preparing honey bees for analysis of the Lake Sinai Virus (LSV).  This type of work is important to society as pollinators are critical for sustaining healthy ecosystems and prosperous human populations.

The Green River in the Uinta basin is fairly flat, so it carries a lot of foam. The foam often follows the fastest part of the river, with is ties to the shape of the channel and the curve of the river. From this level, you can sense subltle changes in the plant like, flow speed, temperature, water clarity, and fauna.

One of the topics we frequently talked about was land use. The Green River in the Uinta is different from other segments because it is surrounded by industrial activity, with scattered farms, livestock, oil pumpjacks. It is not known as a recreational destination, although the beauty is overlooked.

Leetown Science Center researcher, Dr. Deborah Iwanowicz is collaborating with Fort Collins Science Center.  Dr. Scott Cornman who has the lead on a project designed to identify diversity of strains of Lake Sinai Virus (LSV) in bees.  Dr. Iwanowicz is developing primers to more efficiently test for LSV and strain differentiation.

Did you know fossil pollen and spores can help us understand past climate variability?

Tom McKinley was able to answer many of our questions about plant names and ecology in the area. When I shared his boat on the second day, he told me that the orange Globe Mallow flowers close up at night. Solitary bees will hold the stamen and let the flow close around them, using the flower for warmth and protection.

A USGS scientist surveys GPS Ground Control Point locations on North Topsail Beach and within the Camp Lejeune Marine Corps Base, North Carolina. These data are used to validate previously surveyed aerial imagery and aid in Structure from Motion (SFM) processing. Specifically, this scientist was collecting data to look at coastal change due to Hurricane Florence.

The last night, as we neared Desolation Canyon, the bluffs got taller. Since the Green River is calmer here, it reflected the colors of the sunset. I was so worried about making it before the sun went down that I climbed the peak in my chaco sandals, a decision I regretted the next day since my foot were banged up.

The photo above has been cropped here to better show agitation on the pond surface. The agitation could be due to escaping gases from below rising through the water, or from the water boiling, or, perhaps, a combination of both.

Most of our views were from the river level, where you are intimately connected to subtleties in flow, wind, and temperature. It was a welcome opportunity to view the river from above and gain context. We stopped here on the last full day on the river.

These lands have never been empty, although in some places it feels that way. Before western settlers arrived, these lands were polulated by other peoples throughout prehistory. Tom McKinley estimates that these images were drawn during the Fremont age. Some images are clearly human, one may be a fish, others are less clear.

Beaver lodge and drained impoundment in tributary of the Noatak River, Noatak National Preserve

A USGS field crew captures fish during a boat electrofishing survey