Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 19 of 19 for “"aquatic invasive species"”.
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Prevention, Control and Eradication of Aquatic Invasive Species
Invasive alien species (IAS) negatively impact freshwater ecosystems worldwide. As suppression and eradication techniques for established invader populations are often complex, costly and resource-intensive, the prevention of further invader spread is considered a key aspect of proactive management …
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Big data for the benefit of aquatic invasive species management
Aquatic invasive species (AIS) are an expensive problem and the best thing we can do to manage AIS is to prevent their spread. Preventing the spread of AIS requires an interjurisdictional and big data approach to find pathways, locations, and people to prioritize for early interventions. In this …
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Developing a decision support tool for improved aquatic invasive species management
Aquatic invasive species (AIS) are a serious problem with adverse ecological, economic, and social impacts. These wide-ranging impacts mean similarly wide ranges of affected and interested parties (stakeholders) and of knowledge and data types being involved in AIS decisions. Decision support tools …
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Incorporating social science into fisheries management to address challenges from aquatic invasive species
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-15 without embargo terms
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Optimization of environmental DNA collection and extraction techniques for early detection of aquatic invasive species
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-12-01
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Aquatic invasive species vector management: challenges and practical solutions on the eve of new global shipping regulations
A new world standard for ballast water management (IMO-D2) will be enforced commencing September 2017. This thesis aims to achieve required final population abundances for target organisms. In chapter 2, I tested synergy effects with two ballast water treatments (chlorination and ballast water …
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Deep learning of visual features with limited supervision.
… surpassing ViViT model. In active learning on aquatic invasive species data, we achieve 78% balanced accuracy with just 200 labeled samples, improving 27% over random sampling. Together, selective pre-training, self-supervised learning, and active learning provide a flexible framework to …
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Data driven modeling and simulation about carp aggregation
Asian carp is notorious as one of the most severe aquatic invasive species (AIS) threats to the waters of the Mississippi River Region. The devastating effect of Asian carp calls for desperate measures to decrease the spread of Asian carp and prevent possible invasion into the Great Lake. This work …
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Waterfront spectacular
… Plaza and Port capitalizes on two detrimental aquatic invasive species: the sea lamprey (Petromyzon marinus) and zebra mussel (Dreissena polymorpha) and asserts that making work visible, in public, is spectacular—as noted, “a visible deviation from the norm intended to provoke a response.” In …
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An experimental test of intra- and inter-specific competition between invasive western mosquitofish (Gambusia affinis) and native plains topminnow (Fundulus Sciadicus)
1. Invasive species are a major threat to freshwater conservation. Species coexistence in invaded habitats depends on the relative strength of intra- versus inter-specific competition, where inter-specific competition from invasive species to native species is often stronger than intra-specific …
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Assessing the Influence of Different Inland Lake Management Strategies on Human-Mediated Invasive Species Spread
Species introduced to the Great Lakes region through shipping, pet trade, and as biological control have caused significant environmental damages and increased costs to boat owners and various water-dependent industries. Once established, some of these species, such as <i>Dreissenid</i> mussels and …
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Essays on the Use of Hedonic Price Models to Measure Welfare for Quality Changes in the Public Goods
… price method to estimate the effect of an aquatic invasive species (Eurasian watermilfoil) on lakefront property values at selected Vermont lakes. Results indicate that as the primary component of total aquatic macrophyte growth in a lake Eurasian watermilfoil significantly and …
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Values-based communication strategies for promoting conservation behavior in aquatic ecosystems
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-05-01
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Coping strategies for fishers towards invasive alien plant species ( salvinia molesta) at Lukanga swamp, central Zambia.
… major fisheries which has been invaded by the aquatic invasive species commonly known as Kariba weed (Salvinia molesta).Generally, studies show that in areas where aquatic weeds occur, fish populations and catches are reduced and this problem is not restricted to a particular geographical area …
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The role of waterbirds in the dispersal of aquatic organisms in southern Africa
… vector. Propagule dispersal by frugivorous bird species is well researched, but only very recently has the capacity of highly mobile waterbirds to disperse aquatic organisms received similar attention in the dispersal literature. Dispersal is important for the organisation of communities, and …
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Zooplankton response to Asian carp harvesting in Illinois River backwaters: a natural experiment
… recovered from declining planktivory in other aquatic systems: the hope is that the harvesting will reduce the Asian carp’s ecosystem impact on this river as well. The Illinois River response was assessed by comparing the densities of rotifers, nauplii, copepods, and cladocerans in ten …
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The Consequences of Non-Native Species Invasions on the Contemporary and Historic Trophic Ecology of Native Sport Fish in a Lake Michigan Embayment
… of Lake Michigan’s Little Bay de Noc. We found species-specific differences in the δ<sup>15</sup>N and δ<sup>13</sup>C values for 14 fish species. High degrees of niche overlap between walleye, northern pike (<em>Esox lucius</em>), smallmouth bass (<em>Micropterus dolomieu</em>) and yellow perch …
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Distribution and ongoing threat of invasive scud (Apocorophium lacustre) to the Illinois River and Laurentian Great Lakes
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-15 without embargo terms
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Diel and horizontal patterns in the densities of Bythotrephes, Chaoborus, and Leptodora in a Minnesota Reservoir
… The population densities of these three species were examined in a tannin-stained lake (Island Lake Reservoir, Duluth, MN, USA) on eight dates in 2020 and 2021. Four shallow to deep (nearshore to offshore) sites, ranging from 2-16 m, were sampled during the day and the same night to …