Looking for a new postdoc


We are seeking a postdoc to participate in a collaborative DOE-funded project investigating the responses of seasonally dry tropical forests to global changes including nitrogen deposition and altered rainfall regimes.  Responsibilities include field and lab work on large-scale throughfall exclusion and fertilization experiments in Costa Rica, manuscript preparation and submission, and interacting with modeling teams.  The postdoc will be based in Costa Rica.  The ideal candidate has a background in ecophysiology, ecosystems ecology and/or plant functional traits, and must have a good working knowledge of Spanish.  For full consideration, please send a CV, cover letter expressing your interest in this position, and contact information for two references to Dr. Jennifer Powers at the University of Minnesota (powers@umn.edu) by April 2nd  2016.

Lianas reduce tropical forest carbon storage

The new collaborative paper with Stefan Schitzer and Geertje van der Heijden on the effects of lianas on forest carbon storage and cycling is out today.  Check it out here, or see this link for media coverage at the Australian or the New York Times or EOS.  We used a large-scale liana removal experiment in Panama to create forests with and lianas and forests without them.  Liana-free tropical forests devoted more NPP to stem growth. By contrast, forests with lianas devoted more NPP to canopy production.

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Fall News

Congratulations to Leland, who just finished planting 6 hectares of degraded vertisols with (hopefully) drought tolerant native species.  Also, congratulations to Bonnie, for new papers on individual plant effects on soil heterogeneity and spatial variability in soil N cycling and fungi.

Last, a big “muchas gracias” to all of our new (and old) collaborators who came to Lake Itasca in September for our inaugural workshop for the newly funded collaborative grant on tropical dry forest responses to changing climate and nutrient conditions.


Lots of News

In early June many of our lab members participated in the second Research Open House co-hosted by investigadores de ACG and Horizontes, which was a huge success.  You can watch a video of the field trip here, and see Leland and Bonnie explaining their field experiments.

Group photo!

Group photo!

Our lab review on nutrient addition effects in tropical dry forest was recently accepted for publication and can be found here.

In addition, we are launching new collaborative work with other dry forest enthusiasts and modeling teams.  We are establishing large-scale experiments at Horizontes including a fertilization experiment and a throughfall exclusion X fertilization experiment.  We are working with a group of collaborators in Colombia, Mexico, and Puerto Rico, to extend these measurements to other tropical dry forest systems.  These empirical data will be used to parameterize and improve simulation model of forest dynamics and ecosystem processes.  We are looking for a postdoc to help with field data collection.  See the description here.  COSTA_RICA_POSTDOC AD_UMN

Jennifer visited our Colombian team’s field sites in May, and they are spectacular.  Camila Pizano and Beatriz Salgado of the Humboldt Institute were wonderful hosts and we are looking forward to collaborating.

Jennifer, Camila, Beatriz, and Roy

Jennifer, Camila, Beatriz, and Roy

Jennifer in Bogota

Jennifer in Bogota