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The Bioaccumulation Of Cyanotoxins In Aquatic Food Webs, Amanda Lee Murby Mcquaid
The Bioaccumulation Of Cyanotoxins In Aquatic Food Webs, Amanda Lee Murby Mcquaid
Doctoral Dissertations
Cyanobacteria are naturally occurring photosynthetic bacteria, ubiquitous in nature. Increases in temperature and nutrients have supported the proliferation of cyanobacterial growth globally, especially in freshwater systems. Many taxa can produce biotoxins referred to as “cyanotoxins”. While toxic cyanobacteria are a growing public health concern, little is known about the accumulation of cyanotoxins in lake food webs. This research investigates the seasonal occurrence and the potential role of toxic cyanobacteria in two lakes of contrasting water qualities and food web structures. Objectives of this study were to test the bioaccumulation of microcystins (MCs) and beta-methyl-alanine-amino acid (BMAA) in zooplankton. I further …
Evaluation Of New England Salt Marsh Support Of The American Eel, Anguilla Rostrata, And The Impacts Of Hydrologic Restriction, Alyson L. Eberhardt
Evaluation Of New England Salt Marsh Support Of The American Eel, Anguilla Rostrata, And The Impacts Of Hydrologic Restriction, Alyson L. Eberhardt
Doctoral Dissertations
American eels are frequently captured in saltmarsh habitats yet little is known about eel use of these systems. Coastal systems such as salt marshes are vulnerable to habitat impacts due to high rates of coastal development, including impacts from undersized culverts that result in tidally restricted systems upstream. Given the decline in the American eel population, a need exists for a clearer understanding of the functional difference of hydrologically restricted and unrestricted salt marshes in the support of eels. To address data gaps and inform saltmarsh management to support eels, laboratory and field experiments were employed that assessed the value …