BIO 227 Lecture Notes - Lecture 17: Monarch Butterfly, Eichhornia Crassipes, Golden Eagle
Document Summary
Stores salt in its tissue, other plants can"t grow around it. American beavers invade, converting forests to meadows. When it dies it reduces oxygen, fish and aquatic animals can"t survive. Introduced to lake victoria to provide commercial/sport fishing. Traits of successful invasion: weedy species are more likely to become invasive r-selected life history strategy: high reproductive output, vegetative spread, reproduction (fragments) generalists: can utilize many different habitats early-successional/disturbance/human-associated. Weeds along roadsides (tires track seeds): yellow star-thistle, pepperwood: larger groups are more likely to establish, islands are particularly vulnerable to invasion.
