� 2001, by the American Society of Limnology and Oceanography, Inc. NOTES

• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Pacific; Southern Ocean; Subarctic
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.106.5279; http://www.aslo.org/lo/toc/vol_46/issue_6/1535.pdf

Response of marine bacterial community composition to iron additions in three iron-limited regimes Abstract—In high-nutrient low-chlorophyll (HNLC) regimes, iron additions consistently result in primary productivity increases, and the phytoplankton community shifts from small species toward large diatoms. Heterotrophic bacterial production and abundance also increase in HNLC Fe addition experiments, but whether changes in bacterioplankton community composition also occur when Fe is added is unknown. We used trace metal clean shipboard incubation experiments, and molecular biological methods to examine this question in three Fe-limited environments: the subarctic Pacific, the subantarctic Southern Ocean, and the California coastal upwelling region. After Fe additions and subsequent phytoplankton community shifts, changes in bacterial community composition