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You searched for id:"oai:etd.ohiolink.edu:osu1483612502642615". One record found.

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1. Odegard, Jenna Lynn. The role of functional diversity in biotic resistance of non-native fishes and invertebrates in Lake Erie coastal wetlands.

Degree: MS, Environment and Natural Resources, 2017, The Ohio State University

Biological invasions are a leading cause of biodiversity declines and impairment of ecosystem function. Native assemblages that resist invasion by non-native species are frequently thought to be more diverse (i.e. diversity-invasibility hypothesis, DIH). This “biotic resistance” to non-natives by a more diverse assemblage of native species is thought to occur through increased interspecific competition, more fully used resources, and less available niche space. Evidence in support of the biotic resistance is mixed, suggesting that the DIH relationship depends on spatial scale (e.g. “invasion paradox”); however, another factor influencing the relationship between native and non-native species might be how diversity is measured. Most research that examines whether more diverse assemblages are more resistant to invasion has typically focused on measuring taxonomic biodiversity; however, functional diversity (e.g. feeding groups) might also be an important factor contributing to a native assemblage’s biotic resistance. In this study, I investigated if there is support for DIH in fish and invertebrate assemblages in coastal wetlands along the western basin of Lake Erie, according to taxonomic and functional richness and diversity. I sampled native and non-native fishes and invertebrates seasonally between 2013 and 2016. I expected to find a negative association between native and non-native organisms in support of DIH; however, I did not find significant within- taxonomic group relationships. In contrast, when investigating the association between fishes and non-native invertebrate presence across assemblage, I found a positive association. Explanations for these results might be related to spatial scale of the study, the possibility of abiotic factors or facilitation influencing invasion success, my approach to quantifying the biotic assemblage, time since invasion, and the statistical power. Assessing these biotic resistance trends is important for reducing costly impacts of invasion, prioritizing management efforts, and conserving native species. Advisors/Committee Members: Gray, Suzanne (Advisor), Pintor, Lauren (Advisor).

Subjects/Keywords: Environmental Science; Invasion, biotic resistance, coastal wetlands, Lake Erie, fish, invertebrates, non-native

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APA (6th Edition):

Odegard, J. L. (2017). The role of functional diversity in biotic resistance of non-native fishes and invertebrates in Lake Erie coastal wetlands. (Masters Thesis). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1483612502642615

Chicago Manual of Style (16th Edition):

Odegard, Jenna Lynn. “The role of functional diversity in biotic resistance of non-native fishes and invertebrates in Lake Erie coastal wetlands.” 2017. Masters Thesis, The Ohio State University. Accessed August 23, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1483612502642615.

MLA Handbook (7th Edition):

Odegard, Jenna Lynn. “The role of functional diversity in biotic resistance of non-native fishes and invertebrates in Lake Erie coastal wetlands.” 2017. Web. 23 Aug 2017.

Vancouver:

Odegard JL. The role of functional diversity in biotic resistance of non-native fishes and invertebrates in Lake Erie coastal wetlands. [Internet] [Masters thesis]. The Ohio State University; 2017. [cited 2017 Aug 23]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1483612502642615.

Council of Science Editors:

Odegard JL. The role of functional diversity in biotic resistance of non-native fishes and invertebrates in Lake Erie coastal wetlands. [Masters Thesis]. The Ohio State University; 2017. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1483612502642615

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