UCCE Sonoma County
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UCCE Sonoma County

Posts Tagged: aquatic

Costs to manage invasive aquatic weeds in the Delta

Harvesting water hyacinth

Attached is a presentation on the economics of controlling invasive aquatic weeds in the Sacramento-San Joaquin Delta. This was presented by Karen Jetter at the Delta Region Areawide Aquatic Weeds Program (DRAAWP) stakeholders meeting in October 2018.

Harvesting water hyacinth
Harvesting water hyacinth

Harvesting water hyacinth

Posted on Thursday, December 6, 2018 at 3:22 PM
  • Author: Karen Jetter
  • Author: Kjersti Nes
  • Posted by: Guy B Kyser
Tags: aquatic (39), aquatic weeds (34)

Waterprimrose shows disturbance-related dispersal along the Russian River

Uruguay waterprimrose

It may be widely understood that most aquatic and wetland weeds are spread by water currents, but the patchwork of colonizing exotic plants can be puzzling. Why do weeds establish in some places but not others? Generally, the number of propagules (seeds or plant fragments) moving in a watershed is...

Uruguay waterprimrose
Uruguay waterprimrose

Posted on Monday, July 16, 2018 at 8:50 AM
Tags: aquatic (39), Aquatic Plants (22), aquatic weeds (34)

Looking for the right herbicide for Egeria

Brazilian waterweed (Egeria densa) growing in a 40-gallon mesocosm at the USDA Aquatic Weed Research Facility, Davis. Photo by Christy Morgan, USDA.

We are doing a trial of eleven aquatic herbicides for their potential to control Brazilian waterweed (Egeria densa). The active ingredients being tested are bispyribac sodium, carfentrazone, copper-ethylenediamine complex, diquat, dipotassium salt of endothall, the dimethylalkylamine salt of...

Brazilian waterweed (Egeria densa) growing in a 40-gallon mesocosm at the USDA Aquatic Weed Research Facility, Davis. Photo by Christy Morgan, USDA.
Brazilian waterweed (Egeria densa) growing in a 40-gallon mesocosm at the USDA Aquatic Weed Research Facility, Davis. Photo by Christy Morgan, USDA.

Brazilian waterweed (Egeria densa) growing in a 40-gallon mesocosm at the USDA Aquatic Weed Research Facility, Davis. Photo by Christy Morgan, USDA.

Posted on Friday, July 6, 2018 at 1:42 PM
Tags: aquatic (39), Aquatic Plants (22), aquatic weeds (34)
Focus Area Tags: Environment

Tracking water hyacinth with GPS

Figure 1. Water hyacinth mats floating in the Sacramento-San Joaquin Delta.

Water hyacinth (Eichhornia crassipes (Mart.) Solms)) is a perennial free-floating aquatic plant species native to the Amazon region of South America. It has become invasive around the world, including the Sacramento-San Joaquin Delta in central California. Water hyacinth can disperse and colonize...

Posted on Monday, April 30, 2018 at 9:57 AM
Tags: aquatic (39), aquatic weeds (34)

Students grow as scientists with research into mosquito refugia in invasive aquatic plants

Alice Liu and Taylor Barca take water quality measurements at a fluridone control tank at the Mesocosm Experiment in 2015 (picture credit: M. Portilla).

One of the many advantages of being part of DRAAWP is the multiple occasions to meet and work with people from a variety of backgrounds. There have been many opportunities to interact with a variety of disciplines, from satellite imaging and economics to water chemistry and weed control. Thanks to...

Posted on Monday, April 9, 2018 at 9:19 AM
  • Author: Maribel (Mimi) Portilla
  • Posted by: Guy B Kyser
Tags: aquatic (39), aquatic weeds (34), mosquitos (1)

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