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A.Z. Andis Arietta

Ecology, Evolution & Conservation

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forest

Polar projection of the upper half of a spherical panorama of a forest.

UPDATE: Smartphone Hemispherical Image Analysis

May 20, 2023October 9, 2023 azandis@gmail.com

When I first developed the method to estimate canopy metrics from smartphone spherical panoramas, I used a somewhat convoluted workflow involving command line image manipulation, a plugin for ImageJ to […]

 research  canopy estimates, forest, hemispherical photography, methods, photography, project portfolio, R, research

Tips for taking spherical panoramas

July 16, 2021 azandis@gmail.com

Spherical panoramas can be tricky to stitch properly in dense forests, and especially when canopy elements are very close to the camera (which exaggerates the parallax). Fortunately, the issue attenuated […]

 research  canopy estimates, forest, hemispherical photography, research, spherical panorama

Hot competition and tadpole Olympics

December 24, 2020October 9, 2023 azandis@gmail.com

Our newest paper (pdf available on my publications page), led by Kaija Gahm is just out in the Journal of Experimental Zoology as part of special issue on herp physiology […]

 evolution, research  ecology, evolution, forest, local adaptation, microgeographic, project portfolio, published, research, tadpole, vernal pond, wood frog

Smartphone hemispherical photography

December 16, 2020October 9, 2023 azandis@gmail.com

Hemispherical photography is one of those tasks often prefaced by the statement, “How hard could it be?” I’m pretty sure I said something like this at the beginning of my […]

 research  ecology, forest, hemispherical photography, methods, photography, project portfolio, published, research, spherical photography

Evolution of Intrinsic Rates at the Evolution Conference 2019

September 3, 2019 azandis@gmail.com

At this year’s Evolution Conference in Providence Road island, the organizers managed to recruit volunteers to film most of the talks. This is such a great opportunity for folks who […]

 evolution, research  divergence, ecology, embryonic development, evolution, forest, local adaptation, microgeographic, presentation, research, vernal pond, wood frog

Create a radial, mirrored barplot with GGplot

July 19, 2019October 9, 2023 azandis@gmail.com

  Among other topics, my lab studies the relationship between forest obligate frogs and urbanization. During a seminar, I once heard my advisor mention that Connecticut is the perfect state […]

 research  data visualization, forest, GGplot, how to, outreach, project portfolio, R

Analyzing Hemispherical Photos

February 3, 2019July 16, 2021 azandis@gmail.com

Now that you’ve got the theory, equipment, and your own hemispherical photos, the final steps are processing the photos and generating estimates of canopy and light values. [twenty20 img1=”1236″ img2=”1239″ […]

 research  forest, hemispherical photography, methods, research

A Wake in Space-time

July 26, 2018September 16, 2018 azandis@gmail.com

I’m currently on my way up to Alaska for another supremely short season of guiding (just two trips this years). I was going through some old photos and came across […]

 wilderness  Alaska, bear, conservation, ecology, expedition, forest, kayak, photography, wilderness

Songbird Vision

July 21, 2018July 23, 2018 azandis@gmail.com

I’m getting really excited about a project I’m working on that will visually compare the way various animals see their habitat. This is part of a Digital Education Innovation grant […]

 research  ecology, forest, outreach, photography

Hardware for hemispherical photos

March 1, 2018July 16, 2021 azandis@gmail.com

This is my second technical post on using hemispherical photography for light estimates. My previous post considered the rationale behind hemispherical photography estimation methods. This post will cover hardware, specifically: […]

 research  ecology, forest, hemispherical photography, research

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Contact

A. Z. Andis Arietta, PhD
Yale University
andis.arietta@aya.yale.edu

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