Assembling, Visualizing, and Analyzing the Tree of Life

Posts tagged “What is the Tree of Life

Presentation slides from Evolution 2013 available

Open Tree of Life at meetings

The Open Tree of Life project is one of the many phylogeny projects that are featured during the Evolution 2013 meeting that currently takes place in Snowbird (UT). The presentation slides from Karen Cranston, the principal investigator of Open Tree of Life, are available online (LINK). Presentation slides from other investigators are added here in the upcoming days.

Evolution 2013 is the joint annual meeting of the Society for the Study of Evolution (SSE), the Society of Systematic Biologists (SSB), and the American Society of Naturalists (ASN). The conference meets jointly with the iEvoBio conference. Open Tree of Life is represented at both events. About 1400 participants are expected to share their research in evolution, systematics, biodiversity, software, and mathematics.

Connecting millions of data points in a graph database

Creating ‘Facebook’ for species

Neo4j screenshotThe Open Tree of Life database is not just a list with about two million species. Information is added about their special characteristics and possible relationships with others as well. “It may become tens or hundreds of million pieces of data when we are all done.”

Stephen Smith, an evolutionary biology professor at the University of Michigan, is working together with the other researchers of the Open Tree of Life project to develop the programs and tools that will be used to construct the full tree of life. Scientists from all over the world can then synthesize all the information in the database.

“We are currently building the back-end of the Open Tree of Life. We need to create software that allows us to put all our information in a graph network, so that we can easily retrieve the information that researchers are specifically looking for.” (more…)

Quiz time!

Dear Colleagues,

Put on your quiz hats! We need some good questions!

As our team works to build an Open Tree of Life for professionals we are also working on a educational version of the tree for the everyone else, meaning educators, students, and the public in general.This public site will have a FUN QUIZ to test people’s knowledge of evolution, and we need questions for it!


• Sponges fall within which major group on the tree of life? (animal, plant, bacteria)
• Which are mushrooms more closely related to: (animals, red algae or plants?)
• How many origins of life were there on Earth? (1, 2, 3)
• Which organisms represent the greatest biomass on Earth?
(bacteria and archaea, mammals, fish)
• How many major groups of organisms are represented in a ham sandwich? (1, 2, 3)
• Genes (i.e. portions of genomes) yield the same estimate for the ToL? (Yes, No, Sometimes)
• The top 10 infectious agents on earth appear where on the tree? (bacteria only, in both bacteria and eukaryotes, in both bacterial and archaea)
• Each gene sequenced and analyzed yields the very same answer for the ToL? (Yes, No, Sometimes)You can submit up to three questions with this form, but feel free to submit more by starting a new one!

What data should we collect about the input trees for the tree of life?

The absence of a formal reporting standard for phylogenetic analyses is a major impediment for digital access and reuse of published gene trees and species trees.  Efforts are underway to develop a standard for Minimal Information About Phylogenetic Analyses (MIAPA).  An important part of this process is community input on metadata – what is important for use and evaluation, and what is reasonable to expect from producers of trees?

Results from this survey will inform two efforts: the collection of digital phylogenetic data for Open Tree of Life and the development of a minimum information standard for reporting phylogenetic analyses (MIAPA,  If you have any questions, please contact Karen Cranston, National Evolutionary Synthesis Center (

Please add your opinion here

What are your favorite species?

Dear Colleagues,

We need your help creating a list of exemplar species from across the tree of life for our public tree!

As our team works to build an open tree of life for the systematics community, we are also working on a educational version of the tree for the public . Our goal is to depict about 200 better-known (i.e. phylogenetically or otherwise important in some way (pathogen, food source, etc.) species from all three domains of life. The intended audience of this effort includes educators, students, and the public in general.

Please click this link to vote for your 5 best exemplars.

And please join the OpenTree conversation through our websiteemail, and Twitter (opentreeoflife).Thank you!

Audio interview: What is the Tree of Life project?

The incredibly wonderful thing about audio is that you can continue doing what you’re doing while listening and learning. Here, biologist and leader of our Open Tree of Life project, Dr Karen Cranston (from the National Evolutionary Synthesis Center at Duke University), explains our evolutionary  to Bryan Crump from Radio New Zealand. The Open Tree of Life is the first real attempt to draw a single tree of life (as envisioned by evolutionary scientist Charles Darwin) that includes every known species on Earth.

Link to audio

(about 20 minutes)

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