Department of Energy Argonne National Laboratory Office of Science NEWTON's Homepage NEWTON's Homepage
NEWTON, Ask A Scientist!
NEWTON Home Page NEWTON Teachers Visit Our Archives Ask A Question How To Ask A Question Question of the Week Our Expert Scientists Volunteer at NEWTON! Frequently Asked Questions Referencing NEWTON About NEWTON About Ask A Scientist Education At Argonne Cinchina pubescens
Name: Jorge
Status: student
Age: 20s
Location: N/A
Country: N/A
Date: 1999-2001 

Dear Friends,

Hello, my name is Jorge L. Renteria B. I am an Ecuadorian student working on my thesis at the Charles Darwin Research Station (CDRS) on the Galapagos Islands, Ecuador. My thesis investigation is related to the ecology of Cinchina pubescens, an introduced tree that seriously damages the native and endemic Galapagos vegetation. The study involves determining the distribution, seed bank dynamics, and phenological patterns of Cinchina pubescens in order to better understand its invasion dynamics. Recent studies have shown that it reduces the cover and biodiversity of surrounding native vegetation. Ultimately the life history information I am collecting will be used to design an effective management plan for the control and possible eradication of this noxious tree. My study is the one of the first on the behavior of Cinchina pubescens in the unique Galapagos ecosystems. For this reason there is very little information or resources available to me to design and carry out my experiment. I am writing to ask you for information about materials and methods for measuring these above-mentioned traits. I am particularly interested in learning about studies on seed dispersal, seed trap design and location, and experimental design. I am also looking for information about seed sampling techniques, seed measurement techniques, as well as data analysis approaches.

Here on the Galapagos we have a limited access to the Internet. I was able to find the titles of your publications, but was unable to access the text. Likewise, I am unable to access the relevant literature for my study in our library. Although rich in Galapagos literature, CDRS has a limited journal subscription. For these reasons, I ask you to please send me the text of your articles as attached or pasted documents.

The following may be useful: rongrad-seedyr-doc.html


Anthony R. Brach

Click here to return to the Botany Archives

NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators, sponsored and operated by Argonne National Laboratory's Educational Programs, Andrew Skipor, Ph.D., Head of Educational Programs.

For assistance with NEWTON contact a System Operator (, or at Argonne's Educational Programs

Educational Programs
Building 360
9700 S. Cass Ave.
Argonne, Illinois
60439-4845, USA
Update: June 2012
Weclome To Newton

Argonne National Laboratory