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Full-Text Articles in Physical Sciences and Mathematics

Predictors Of Exotic Plant Species In United States National Parks, Rachel S. Fried Jun 2017

Predictors Of Exotic Plant Species In United States National Parks, Rachel S. Fried

Honors Theses

Invasive species are recognized as a major threat to biodiversity. Understanding what factors facilitate invasion is of great conservation value, as this will allow for more specific and targeted conservation efforts related to non-native species. Knowledge of factors that contribute to invasion play an important role in conservation of particularly unique habitats, such as the iconic United States National Parks. Though National Parks have some legal protections against some forms of habitat degradation, they are still vulnerable to the introduction of non-natives. The purpose of this study is to characterize species invasion in National Parks and identify what environmental conditions …


Sea Change In Management Strategies: The Implications Of Global Climate Change On Policy Conceptions Of And Responses To Invasive Marine Species, Griffin J. Hunt Apr 2017

Sea Change In Management Strategies: The Implications Of Global Climate Change On Policy Conceptions Of And Responses To Invasive Marine Species, Griffin J. Hunt

Senior Theses and Projects

The dispersal of the invasive red lionfish (Pterois volitans) across the Caribbean–Atlantic reverberates throughout the region’s public policy, conservation efforts, and economic concerns. Invasions by non–native species generally exhibit a wide range of negative effects on recipient ecosystems, and the lionfish case is no exception. Of central concern, this invasion has occurred at a rate, scale, and magnitude that precludes traditional management efforts. This paper assesses the diverse anthropogenic factors that contributed to the establishment of lionfish within the Caribbean–Atlantic, as well as the reasons for the species’ subsequent rapid dispersal throughout the region. This work investigates how …


Spawning Site Selection And Fry Development Of Invasive Lake Trout In Yellowstone Lake, Yellowstone National Park, Wyoming, Lee Simard Jan 2017

Spawning Site Selection And Fry Development Of Invasive Lake Trout In Yellowstone Lake, Yellowstone National Park, Wyoming, Lee Simard

Graduate College Dissertations and Theses

Since their discovery in Yellowstone Lake in 1994, Lake Trout (Salvelinus namaycush) have been the object of an intensive gillnet suppression program due to their predation on native Yellowstone Cutthroat Trout (Oncorhynchus clarkii bouvieri). Managers are also interested in targeting early life stages to augment suppression. A benthic sled was used to sample for Lake Trout eggs at 24 locations, hypothesized to be spawning sites, that encompassed a range of depths, slopes, and substrate composition to determine the location and characteristics of spawning sites in Yellowstone Lake. Lake Trout eggs were collected at seven sites, five of which had not …