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Hydrology

2017 EcoInformatics Summer Institute Symposium

Event Date: 
Thursday, August 17, 2017
Event Brief Description: 

We invite you to join us for the 2017 EcoInformatics Summer Institute Symposium for research seminars on pollinator and river networks!

When: Aug. 17th, 2-4pm
Where: LINC 268
What: The EISI is an NSF-funded Research Experience for Undergraduates (REU) program that supports students from computer science, mathematics, ecology, earth science, engineering, and statistics. Students work in interdisciplinary teams to conduct field work at the HJ Andrews Experimental Forest. The students then analyze the “big data” developed at the Andrews to apply cutting-edge methods and models for investigating the dynamics of plant-pollinator networks and of river networks. Titles of individual student projects are provided below.
 
Author    Project team    Presentation Title
Peter Duin    river networks    Impact of forest harvests, road networks, debris flows, and channel morphology on volume of large woody debris in Western Cascade streams
Brent Davis    river networks    The spatial influence of LWD and tributary confluence on the local grain size distribution
Malia Gonzales    river networks    Analyzing the effect of flood events and debris flows on the temporal change of stream grain size distribution in the Western Cascade Mountains, Oregon
Sashka Warner    river networks    Network Structure as a Modulator of Disturbance Impacts in Streams
Adam Zhang    river networks    An analysis of fractal geometry in Western Cascade stream networks
Josh Griffin    pollinator networks    Simulating pollinator foraging - contrasting social bees vs. solitary bees
Jane Huestis    pollinator networks    Examining phylogenetic relatedness as a driver of plant-pollinator interactions in montane meadows
Lydia Miller    pollinator networks    Drivers of modularity in plant-pollinator networks of montane meadows
Elaina Thomas    pollinator networks    Separating nestedness from species replacement in measures of beta diversity in montane meadows of the Western Cascades
Andrew Guide    pollinator networks    Influence of plant and pollinator characteristics on the interactions of pollinators in montane meadow.

You can find more information about the program on the EISI website

Assessing river corridor exchange at the network scale

Adam Ward (Indiana University) was awarded an NSF CAREER Grant of more than $700,000 to implement an integrated program of research and education. Much of the work will occur at the Andrews Forest. Ward's research strongly leverages the Andrews Forest's geologic diversity, existing instrumentation network, and access to a 5th order river basin. The multi-scale work and educational initiatives will take advantage of the long-term data available from the Andrews Forest site and build upon a body of work from the Andrews Forest on streams, hyporheic zones, and valley bottoms.

Summer streamflow deficits from regenerating forest

There is much discussion about how plantation forestry affects streamflow in dry (lowflow) seasons, especially as climate change may exacerbate water scarcity. Analysis of 60‐year records of daily streamflow from eight paired‐basin experiments in the Andrews Forest revealed that the conversion of old‐growth forest to Douglas‐fir plantations had a major effect on summer streamflow.

Lookout Creek Discharge

Lookout Creek’s average discharge is the equivalent of a fully-loaded concrete truck rumbling down the river bed every 2.2 seconds!

Lookout Ck mean annual discharge - 121.83 cubic feet per second (cfs)

A standard concrete truck holds 10 cubic yards or 270 cubic feet (cf).

270 cf ÷ 121.83 cfs = 2.21 s

Concrete trucks appear to be 7.168 m long (google) and if you chained them, bumper to bumper with no space in between, the “train of concrete trucks” would be traveling 7.25 mph.

Most snow

The largest snowpack recorded at the Andrews Forest was 4.4 meters (or 14 feet), at the Upper Lookout Meterological Station in 2008. The water storage in the snowpack on this date was equal to a depth of 1.56 meters (or 5 feet) of liquid water. Learn more about our climate measurements on our Research Programs page.

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