The Pherobase was developed by Dr. Ashraf El-Sayed, a research scientist at HortResearch in New Zealand, with the primary objective of providing "coverage of the literature published on chemical communication in...

The transport and transformation of substances in the environment are known collectively as biogeochemical cycles. These global cycles involve the circulation of elements and nutrients that sustain both the biological...

This site contains a number of Web-accessible botanical resources from Herbarium COLO, the Botany Section of the University of Colorado Museum. Focused exclusively on the flora of Colorado, the site includes species...

Hosted by the Burke Museum of National History and Culture, and the University of Washington Herbarium, this website features 5,713 beautiful photographs of 1,183 plant species found in the many diverse ecosystems of...

This digital image collection from the US Fish & Wildlife Service contains an enormous number of photographs that can be viewed online or downloaded. The collection contains images of plants, wildlife, landscapes, and...