Web Page Examples

You may find Web pages ranging from a 5th grade class assignment on penguins...

 

poster with information about penguins

Johnny Johnson, son of John Johnson, is in the fifth grade at Houston Gardens Elementary School. Johnny likes hot dogs, the color red, and watching birds. He has been attending Say YES Saturdays for two years and said he likes to go because "You get to learn about different things." Johnny plans to be a lawyer when he grows up. He was looking forward to seeing a real penguin at Sea World. 

 
     
 


...to a scholarly treatise on isoproturon bioaccumulation

 
Journal title Ecotoxicology and Environmental Safety

Role of Temperature on Isoproturon Bioaccumulation and Effects on Two Freshwater Rooted Macrophytes: Elodea densa and Ludwigia natans

Thierry Grollier, Agnès Feurtet-Mazel, Alain Boudou, Francis Ribeyre

The effects of temperature on the bioaccumulation of the phenylurea herbicide isoproturon (IPU) and on the growth inhibition induced on two freshwater rooted macrophytes-Elodea densa and Ludwigia natans-were investigated using indoor microcosms. The experimental protocol was based on five temperatures (12, 16, 20, 24, and 28°C) and two contamination levels of the water column (30 and 60 µg IPU . liter-1), plus a control condition. Variations in temperature had little effect on the decrease in [IPU] in the water column during the 21-day experiment. The IPU concentration in the two macrophyte species was not significantly modified by the large range of temperatures when results were expressed using the concentrati 6d4 on criterion. IPU burdens in the E. densa cuttings, on the other hand, increased significantly when the temperature rose from 12 to 28°C; small differences were observed between the two exposure conditions, in relation to the antagonistic effects of IPU and temperature on the growth of the cuttings. Bioconcentration factors in the plants (stems + leaves) were close to 10 and 13 after exposure to 30 and 60 µg IPU . liter-1, respectively.

Ecotoxicology and Environmental Safety, v 36, n 3, April 1997, p205-212 (ID ES961496) 
Copyright (c) 1997 Academic Press 

Chapter 6 — Page 6