In the paper written by M. C. Jackson (2015), the main focus is on interactions among invasive species in an environment. In this research, data was compiled from 74 different papers on related topics to perform two meta-analyses to show that the mean interaction among invaders is to reduce one another’s overall performance. The main questions that focused on were if the interactions among invaders were neutral, negative, or positive and what are possible implications of these combined interactions of invasive animals on their environment? To determine a possible answer to each question, different sets of data were considered from all of the papers recognized (Jackson, 2015).
For the first question, data was considered from papers that examined the outcome the presence and absence of an invader had on the performance of another invader (Jackson, 2015). There were many variables considered for this sector of the research. The performance of the invasive species were broken up into five categories: growth, diet, abundance, behaviour and survival (Jackson, 2015...
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...d an issue when looking at trends and patterns within the data. Also, as the data was collected from numerous undergraduate students across the United States, there was some error due to compiling and entering data incorrectly. Lastly, land-history was not considered in this study which could have an effect on the end results.
Invasive species is defined as a species that is introduced into a new area and has the potential to cause lasting impacts on the species and biotic factors native to that area (Invasive Species, n.d). The studies observed and discussed in this paper help to clarify this definition as the results they obtained were quite similar across all three papers. Although the papers had some definitive results, it is clear that more research needs to be done invasive species to truly understand them and the impacts they have on the overall environment.
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