Christopher X J. Jensen
Associate Professor, Pratt Institute

Aquatic food chains have gotten longer and less diverse over evolutionary time

Posted 19 Jun 2012 / 0

PLos One “Shorter Food Chain Length in Ancient Lakes: Evidence from a Global Synthesis” What I wonder is: what is the mechanism by which these communities evolve away from their initial “short-and-wide” configuration?

A Minor Post, Articles, Community Ecology, Predation

Big felines have lots of commensal fans

Posted 19 Jun 2012 / 0

Science Now “Pumas Leave Table Scraps” This is an interesting story because it suggests that Pumas maintain strong ecological interaction strengths with not just their prey but also all these commensal species. This finding makes it a lot harder to discount top predators as simply consumers whose only role is in depleting prey populations: for Read More

A Minor Post, Commensalism, Community Ecology, Predation, Web

Asian Carp on NPR

Posted 07 Oct 2010 / 0

Today National Public Radio‘s All Things Considered featured a good piece on the Asian Carp problem entitled “White House ‘Asian Carp Czar’ Outlines His Strategy For Eradicating Species“. The story explains how two human actions — the importation of carp for aquaculture and the reversal of the Chicago River by a massive engineering project — Read More

Coevolution, Freshwater Ecosystems, Invasive Species, Predation, Public Policy, Radio & Podcasts, Urban Ecology

National Geographic “Fatal Attraction”

Posted 05 Mar 2010 / 0

This month’s National Geographic features a really beautiful article on carnivorous plants written by Carl Zimmer. The article presents the numerous independently-evolved adaptations possessed by a diversity of plants which live in nitrogen-poor soil. These adaptations are a great example of coarse-scal evolutionary convergence, as a variety of plants have all come up with the Read More

A Minor Post, Adaptation, Articles, Bogs & Wetlands, Convergence, Evolution, MSCI-260, Evolution, Predation

ESA 2009 Day #3 (Tuesday) – Mutualistic Networks Symposium

Posted 05 Aug 2009 / 0

I spent Tuesday morning in a really well-organized symposium entitled “Mutualistic Networks”. Headed up by Jordi Bascompte, the collected talks focused on the network architecture of mutualistic interactions, mostly among plants and their various insect pollinators. I came in with only a very basic understanding of matrix-based interaction networks, but Bascompte’s introduction to the session Read More

A Major Post, Competition, Conferences, Ecological Society of America, Interactions, Mutualism, Mutualistic Networks, Parasitism, Pollination, Predation, System Stability, Talks & Seminars