Christopher X J. Jensen
Associate Professor, Pratt Institute

How renewable power sources grow more trees

Posted 27 Sep 2018 / 0

Science “Climate model shows large-scale wind and solar farms in the Sahara increase rain and vegetation” These kinds of positive feedback loops are exciting. Generally, we are really good at creating deleterious positive feedback loops: changes that further exacerbate our environmental dilemmas. But as this modeling article demonstrates, careful re-engineering of our environment can create Read More

A Minor Post, Climate Change, Ecological Modeling, Ecological Restoration, Ecology, Modeling (General), Sustainable Energy

Are corals riding ocean currents to exert climate change dominance over macroalgae?

Posted 06 Sep 2018 / 0

Proceedings of the National Academy of Sciences “Ocean currents and herbivory drive macroalgae-to-coral community shift under climate warming” What’s really interesting in this study is the interaction it discovered: climate change may change competitive dynamics, but it does so in the presence of other factors which also must be modeled in order to predict future competive Read More

A Minor Post, Climate Change, Ecological Modeling, Marine Ecosystems, Modeling (General), Spatially Explicit Modeling

Can a realistically-parameterized model tell us why our brains are so big?

Posted 30 Aug 2018 / 0

Nature “Sizing up human brain evolution” Nature “Inference of ecological and social drivers of human brain-size evolution” This is an interesting study that I simultaneously think is really cool and has some major flaws. What’s cool about this study is that it trys to get at this question with a model that’s (reasonably) constrained by observed parameter Read More

A Minor Post, Allometries, Articles, Brain size, Cognitive Ability, Evolution, Human Evolution, Individual-based Models, Modeling (General), Neuroscience, Uncategorized

Evolution 2014: Day 0

Posted 20 Jun 2014 / 0

I started off this year’s Evolution meeting early. The conference is — at its core —  a four-day affair. But the days leading into the “official” start on Friday evening feature larger workshops aimed at building skills. I chose to attend the Experiencing Evolution workshop. Here’s what this session promised: Evolution is a key biological concept, Read More

A Major Post, Adaptation, Assessment Methods, Behavior, Coevolution, Competition, Conferences, Cooperation, Evolution, Evolution Education, Evolutionary Modeling, Genetics, Grants & Funding, Higher Education, Individual-based Models, Lesson Ideas, Multilevel Selection, Natural Selection, Phylogenetics, Population Genetics, Population Growth, Predation, Reproductive Fitness, Science in Art & Design, Sex and Reproduction, Society for the Study of Evolution, Talks & Seminars, Teaching, Teaching Tools

Our review paper on Late Pleistocene Extinction Modeling published in QRB!

Posted 21 May 2014 / 0

I am proud to announce that a paper on which I am co-author, “A review and synthesis of late Pleistocene extinction modeling: Progress delayed by mismatches between ecological realism, interpretation, and methodological transparency“, has been published in the June 2014 issue of The Quarterly Review of Biology. The paper looks at the history of modeling aimed Read More

A Major Post, Anthropogenic Change, Articles, Biodiversity Loss, Climate Change, Community Ecology, Ecological Modeling, Extinction, Modeling (General), My publications, Predation

How understanding social evolution might help treat cancer

Posted 29 Jan 2014 / 0

The information sharing issue is really interesting here: in some sense, the medical field has the most detailed organismal knowledge available for any species, and evolutionary biologists are generally not that aware of the depth of what is known about the functions of the human body. Although I think that evolutionists have a lot to Read More

A Minor Post, Cooperation, Evolutionary Modeling, Health & Medicine, Individual-based Models, Talks & Seminars

More press for paper that de-bunks the zero determinant superiority

Posted 03 Sep 2013 / 0

There has been additional coverage of the paper showing that “zero determinant” strategies in the Prisoner’s Dilemma are not evolutionarily robust: “Generosity leads to evolutionary success, biologists show” Popular Science “Evolution Punishes Selfish People, Game Theory Study Says” Here’s the original paper: Proceedings of the National Academy of Sciences USA “From extortion to generosity, evolution Read More

A Minor Post, Articles, Cooperation, Game Theory, Modeling (General), System Stability, Web

Ethnocentric cooperation dominates humanitarian cooperation in the computer… so why does humanitarianism persist?

Posted 23 Aug 2013 / 2

Journal of Artificial Societies and Social Simulation “The Evolutionary Dominance of Ethnocentric Cooperation” Human beings are not always (or completely) engulfed in a war of tribe against tribe. In other words, we are not strictly “ethnocentric” in our cooperation: we are willing to cooperate with those not directly identified as our “in group”. This modeling Read More

A Minor Post, Cooperation, Individual-based Models, Kin Selection

Zero determinant strategy is just another short-term adaptation

Posted 15 Aug 2013 / 0

The Scientist “A Twist in Evolutionary Game Theory: Biologists demonstrate the instability of employing a selfish strategy in the prisoner’s dilemma game” Nature Communications “Evolutionary instability of zero-determinant strategies demonstrates that winning is not everything” I am so glad to see that someone did the math and simulations to look at the long-term stability of Read More

A Minor Post, Adaptation, Articles, Behavior, Coevolution, Cooperation, Evolutionary Modeling, Game Theory, Individual-based Models, Phenotypic Plasticity, Punishment, Reciprocity, System Stability

Working on a VUE concept map of the fieldTest simulation

Posted 22 Jun 2013 / 0

Jennifer Verdolin, Dylan Moore, and I created the fieldTest simulator several years ago. This individual-based simulation allows virtual animals with the potential to form social groups that defend territories to interact on landscapes containing different patterns and abundances of resources, and is part of my larger research into group territorial behavior. We presented our results at the 2009 Read More

A Major Post, Behavioral Ecology, Competition, Concept Mapping, Department of Mathematics & Science, Ecological Modeling, Group Territorial Behavior, Individual-based Models, Information Design, Spatially Explicit Modeling