History
Propagule pressure plays an important role in species invasions (Groom, 2006). Charles Darwin was the first to study specific factors related to invasions of non-native species. In his research he identified that few members of the same genus were present in habitats containing naturalized non-indigenous species (Colautti et al., 2006). His research showed that the number of nonnative species varied from habitat to habitat. Later, it was suggested that the niche theory and biotic resistance help explain the variation in success or failure of nonnative invasion (Colautti et al., 2006). More recent studies have shown that particular invasive species characteristics, such as ability to compete for resources, aid in their proliferation in habitats. A study noted by Colautti showed the correlation between propagule pressure and invasion success (2006). Without propagule pressure the number of invasive species incorporated would be unpredictable. It has been shown that species successfulness is frequently attributed to propagules (Colautti et al., 2006).
Read more about this topic: Propagule Pressure
Famous quotes containing the word history:
“The only history is a mere question of one’s struggle inside oneself. But that is the joy of it. One need neither discover Americas nor conquer nations, and yet one has as great a work as Columbus or Alexander, to do.”
—D.H. (David Herbert)
“The history of the Victorian Age will never be written: we know too much about it.”
—Lytton Strachey (1880–1932)
“The history of work has been, in part, the history of the worker’s body. Production depended on what the body could accomplish with strength and skill. Techniques that improve output have been driven by a general desire to decrease the pain of labor as well as by employers’ intentions to escape dependency upon that knowledge which only the sentient laboring body could provide.”
—Shoshana Zuboff (b. 1951)