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                    U.S. DEPARTMENT OF AGRICULTURE
 Invasive Species and Pollinator Health: Albany, CA
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ARS Home Pacific West Area Albany, California Western Regional Research Center Invasive Species and Pollinator Health People





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- Paul Pratt, RL
- Brenda Grewell
- Brian Hogg
- John Madsen
- Patrick Moran

Dr. John Madsenheadline bar Contact: (530) 752-7870 john.madsen@ars.usda.gov  Area of Expertise: Research Biologist
 Education: Ph.D., University of Wisconsin-Madison, 1986
 **Work Experience:** Research Biologist, USDA/ARS, Invasive Species and Pollinator Health Research Unit, Davis, CA, 2014 to present  **Research Focus:** The long-term goal of my research is to develop long-term integrated management approaches to invasive aquatic plants based on an understanding of the life history of that target plant species that results in selective control of the target plant, with minimal environmental impact. This necessitates studies that include: Understanding the seasonal growth, phenology, and carbohydrate storage patterns of invasive aquatic plant species;
Identifying growth stages of aquatic plants that are significant to the overwintering and propagation of the plant;
Develop use patterns of aquatic herbicides that selectively manage the target plant with minimal impact on native species, and compatible with other management techniques;
Evaluate the environmental impact of both the invasive plant species, and the management techniques used to manage them.  **My current research projects include:** Phenological and life history studies of water hyacinth, curlyleaf pondweed, Egeria, and flowering rush
Chemical control of water hyacinth, Egeria, flowering rush, South American spongeplant, and Ludwigia
Environmental drivers for growth of water hyacinth, South American spongeplant, Egeria, and flowering rush
Partnering with agencies and research institutions on the development and implementation of invasive aquatic weed management programs  ***Info about my research team:** Current lab members include: John Miskella and Christy Morgan
 PublicationsNo publications listed for this employee.
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