Controversy in invasion biology terms exists because of past usage and because of preferences for certain terms. Even for biologists, defining a species as native may be far from being a straightforward matter of biological classification based on the location or the discipline a biologist is working in (Helmreich 2005). Questions often arise as to what exactly makes a species native as opposed to non-native, because some non-native species have no known negative effects (Woods and Moriarty 2001). Natural biological invasions, generally considered range expansions, and introductions involving human activities are important and could be considered a normal ecological process (Vermeij 2005). Non-native and native species may be sometimes considered invasive, and these invasions often follow human-induced landscape changes, with subsequent damage to existing landscapes a value judgment (Foster and Sandberg 2004). As a result, many important terms relevant to invasion biology, such as invasive, weed, or transient, include qualities that are "open to subjective interpretation" (Colautti and MacIsaac 2004). Sometimes one species can have both beneficial and detrimental effects, such as the Mosquito fish (Gambusia affinis), which has been widely introduced because of its suppression of larval mosquitoes, although it also has negative impacts on native species of insects, fish and amphibians (Colautti and MacIsaac 2004). |
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EditingI have had many experiences recording myself in the past. This experience really helped us quickly lay down a nice track for the video that was about the right length. I am honored to be able to add an emotional element to this video in the form of my music. Once we determined that I would play one of my pieces for the video, it took us only two run throughs to capture the music. The end result needed almost no editing.
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AuthorHi, I'm Felix. Here you'll find examples of my work and play. Categories
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December 2012
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