BioScience tip sheet, March 2009( The March 2009 issue of BioScience i...)

The March 2009 issue of BioScience includes the following peer-reviewed articles:

Molecular Biology and Genomics: New Tools for Weed Science.
Patrick J. Tranel and David P. Horvath.

Modern techniques have allowed great advances against weeds, including the development of herbicide-resistant crops and a better understanding of how weeds interact with neighboring plants. The next generation of tools, including genomics, could yield novel and still more effective strategies.

Why We Have Field Stations: Reflections on the Cultivation of Biologists.
John Janovy Jr. and Krista M. Major.

For students, time studying at a field station can be a life-changing experience that leads to increased respect for living systems, and, for some, a career choice leading to professional science.

Quantifying the Contribution of Organisms to the Provision of Ecosystem Services.
Gary W. Luck and colleagues.

The authors unite the concepts of ecological service-providing units and ecosystem service providers to define a continuum that can be used to direct future studies at different biological levels. The authors stress the importance of quantifying characteristics that provide services, and of assessing services relative to human needs. They provide examples of their approach and highlight significant gaps in scientific knowledge.

Do Changes in Connectivity Explain Desertification?
Gregory S. Okin, Anthony J. Parsons, John Wainwright, Jeffrey E. Herrick, Brandon T. Bestelmeyer, Debra C. Peters, and Ed L. Fredrickson.

The authors argue that diverse forms of desertification, as well as its remediation, are driven by changes in the length of connected pathways for the movement of fire, water, and soil resources. Natural processes increase the length of connected pathways. Management of connectivity is essential to understanding and p
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