Couch Grass

Couch grass photo by Kweek on Wikimedia Commons

Elymus repens

Elymus repens (L.) Gould (couch grass; syn. Triticum repens L., Agropyron repens (L.) P. Beauv., Elytrigia repens (L.) Desv. ex Nevski) is a very common perennial species of grass native to most of Europe, Asia, and northwest Africa. Other names include twitch, quick . . . → Read More: Couch Grass

Environmental Impact of Wind Power

Compared to the environmental impact of traditional energy sources, the environmental impact of wind power is relatively minor. Wind power consumes no fuel, and emits no air pollution, unlike fossil fuel power sources. The energy consumed to manufacture and transport the materials used to build a wind power plant is equal to the new . . . → Read More: Environmental Impact of Wind Power

Thimbleberry

Thimbleberry Photo by Jim Dexter on Wikimedia Commons

Botanical Name: Rubus parviflorus thimbleberry

Family: ROSACEAE

General Description.—Thimbleberry, also known as western thimbleberry, salmonberry, mountain sorrel, and western thimble raspberry, is a spineless, deciduous shrub 0.5 to 2.5 m in height. Twigs and new stems are green and glandular; old stems are covered with . . . → Read More: Thimbleberry

Water Insects and Zooplankton Identification Chart

 

Euchlanis dilatata

The following identification charts gives the reader a general idea on the aquatic life that can be found in freshwater aquaculture ponds.

 

Rotifers:

 

Anterodorsal margin with semicircular notch

Lengths: dorsal plate 200 - 270 µm, ventral plate 170 - 250 µm, toes 50 - 75 µm.

Widths: dorsal . . . → Read More: Water Insects and Zooplankton Identification Chart