Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Life Sciences (4)
- Earth Sciences (3)
- Ecology and Evolutionary Biology (3)
- Natural Resources and Conservation (3)
- Oceanography and Atmospheric Sciences and Meteorology (3)
-
- Terrestrial and Aquatic Ecology (3)
- Biochemistry (2)
- Biochemistry, Biophysics, and Structural Biology (2)
- Environmental Health and Protection (2)
- Fresh Water Studies (2)
- Geology (2)
- Hydrology (2)
- Oceanography (2)
- Agribusiness (1)
- Agricultural Economics (1)
- Agriculture (1)
- Agriculture Law (1)
- Algae (1)
- Animal Diseases (1)
- Animal Sciences (1)
- Aquaculture and Fisheries (1)
- Bacteria (1)
- Bacterial Infections and Mycoses (1)
- Biogeochemistry (1)
- Biology (1)
- Business (1)
- Business Law, Public Responsibility, and Ethics (1)
- Keyword
-
- Gulf of Maine (2)
- Acclimatization (1)
- Antibiotic resistance (1)
- Bedrock (1)
- Chemical ecology (1)
-
- Coastal phytoplankton communities (1)
- Dinoflagellates (1)
- Ditches (1)
- Downwelling (1)
- Eutrophication (1)
- Harmful algal blooms (1)
- Harpswell Sound (1)
- High performance liquid chromatography (1)
- Induced resistance (1)
- Kennebec River (1)
- Lake Erie (1)
- Land use (1)
- Manure management (1)
- North Atlantic (1)
- Nutrient regime (1)
- Nutrients (1)
- Ocean nutrients (1)
- Pacific Northwest (1)
- Phytoplankton (1)
- Phytoplankton community structure (1)
- Pseudonitzschia (1)
- River phytoplankton (1)
- Shelf sea (1)
- Subsurface drainage (1)
- Surface drainage (1)
Articles 1 - 5 of 5
Full-Text Articles in Environmental Monitoring
Diatom Blooms In Harpswell Sound: Seasonality, Succession, And Origin, Charlie Francis O'Brien
Diatom Blooms In Harpswell Sound: Seasonality, Succession, And Origin, Charlie Francis O'Brien
Honors Projects
Harpswell Sound (HS) is an inlet in northeastern Casco Bay that exerts control on Gulf of Maine ecosystem health, yet its complex phytoplankton community dynamics have not been characterized with sufficiently detailed analyses. In this research, high-resolution automated microscopy and current velocity observations were used to test the seasonality, ecological succession, bloom origin location, and potential toxicity of populations in HS between 2020 and 2022. Winter months could exhibit slow accumulation of diatom biovolume. Cold, salty surface water has net outflow in winter as nutrients from depth are replenished during net upwelling conditions, and populations could be exported from the …
Salicylic Acid Response To Simulated Herbivory In Geographically Distinct T. Heterophylla And H. Discolor Populations, Amy E. Castle
Salicylic Acid Response To Simulated Herbivory In Geographically Distinct T. Heterophylla And H. Discolor Populations, Amy E. Castle
Honors Projects
It is commonly known that plants may produce salicylic acid as a chemical defense response to wounding, although the phenomenon has usually been observed with regard to insect herbivory. Stem and leaf tissue of two species, Tsuga heterophylla and Holodiscus discolor, which are often eaten by deer, were extracted in methanol and analyzed by HPLC to quantify salicylic acid concentration in experimentally wounded or control samples. No salicylic acid response was detectable in T. heterophylla, suggesting it is a less useful candidate species for future study. Some but not all H. discolorsamples had a measurable salicylic acid …
Living Upstream: Kennebec River Influence On Nutrient Regimes And Phytoplankton Communities In Harpswell Sound, Siena Brook Ballance
Living Upstream: Kennebec River Influence On Nutrient Regimes And Phytoplankton Communities In Harpswell Sound, Siena Brook Ballance
Honors Projects
Phytoplankton underpin marine trophic systems and biogeochemical cycles. Estuarine and coastal phytoplankton account for 40-50% of global ocean primary productivity and carbon flux making it critical to identify sources of variability. This project focuses on the Kennebec River and Harpswell Sound, a downstream, but hydrologically connected coastal estuary, as a case study of temperate river influence on estuarine nutrient regimes and phytoplankton communities. Phytoplankton pigments and nutrients were analyzed from water samples collected monthly at 8 main-stem rivers stations (2011-2013) and weekly in Harpswell Sound (2008-2017) during ice-free months. Spatial bedrock and land use impacts on river nutrients were investigated …
Species Determination Of Ulvoid Algae Through Genotyping; What Are The Environmental Implications?, Kora S. Krumm
Species Determination Of Ulvoid Algae Through Genotyping; What Are The Environmental Implications?, Kora S. Krumm
Honors Projects
Ulva is a genus of marine green algae native to many of the world’s coastlines and is especially difficult to identify via traditional methods such as dichotomous keying. This project aims to streamline taxonomic classification of Ulva species through DNA sequence analysis. Local samples of Ulva were obtained from Puget Sound, Seattle, WA, and two target genes (rbcL and its1) were amplified via PCR and sequenced for comparative analysis between samples. Ulvoids have a detrimental impact on marine ecosystems in the Pacific Northwest due to their role in eutrophication-caused algal blooms, and reliable identification can help inform conservation …
The Effects That Liquid And Solid Cattle Manure Have On The Water Quality Of Drainage Ditches In Putnam County, Ohio, Janelle Horstman
The Effects That Liquid And Solid Cattle Manure Have On The Water Quality Of Drainage Ditches In Putnam County, Ohio, Janelle Horstman
Honors Projects
Lake Erie has experienced harmful algal blooms with increased frequency since the mid-1990s due to excess nutrients from Rivers, such as the Maumee River, and largely agricultural watersheds. Nonpoint source pollution from agriculture contributes to eutrophication, algal blooms, and the degradation of water quality. This creates stress on aquatic fauna, reduced aesthetic quality, odor, and limits of the water for usage of drinking, recreation, and industry. This research paper asks what the contributions of having access to manure application records, soil records, and information about antibiotics have on what is known about manure management and antibiotic resistance, which has been …