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Articles 1 - 13 of 13
Full-Text Articles in Other Environmental Sciences
Movement And Activity Of Burbot, (Mizay; Lota Lota) In A Spring-Fed Minnesota Lake, Abigail M. Fountain
Movement And Activity Of Burbot, (Mizay; Lota Lota) In A Spring-Fed Minnesota Lake, Abigail M. Fountain
Biology Graduate Theses
Burbot (Mizay; Lota lota) are a relatively unmanaged freshwater fish, important in many local Indigenous cultures, but often overlooked or maltreated in research, conservation, and fishing practices. As such, relatively little research has been conducted on Burbot, despite ecological significance as an indicator species. A recent resurgence in popularity as a target species, however, has prompted new research to inform management policies. The objectives of this study were to summarize Burbot movement by identifying patterns in swimming activity and identify possible predictors of the movement observed. This study investigated the movements of 39 individuals implanted with acoustic transmitters in Bad …
Journal Of Earth And Life Science, Academic Year 2024-2025, Megan Boche, Nathan D. Pyburn, Ben Hoover, Jayden R. Alsleben, Hector Montoya, Jr, Reed Cumberland, Rose Kuhlmann, Ray Anderson, Ellie Isakson, Seth Sisneros-Martinez, Zanden Mellen, Quady Bernu, Cian Verbridge, Benjamin D. Strei, Madelaine Adamich, Arian Garcia, Tegwen Romportl, Sandra J. Marcu, Bemidji State University
Journal Of Earth And Life Science, Academic Year 2024-2025, Megan Boche, Nathan D. Pyburn, Ben Hoover, Jayden R. Alsleben, Hector Montoya, Jr, Reed Cumberland, Rose Kuhlmann, Ray Anderson, Ellie Isakson, Seth Sisneros-Martinez, Zanden Mellen, Quady Bernu, Cian Verbridge, Benjamin D. Strei, Madelaine Adamich, Arian Garcia, Tegwen Romportl, Sandra J. Marcu, Bemidji State University
Journal of Earth and Life Science
No abstract provided.
Adult Walleye Abundance And Subsequent Fry Production In The Tamarac River, Mn, Phillip Oswald
Adult Walleye Abundance And Subsequent Fry Production In The Tamarac River, Mn, Phillip Oswald
Biology Graduate Theses
Walleye reproductive success is of critical interest for the Red Lakes as this system is maintained entirely by natural reproduction and supports robust commercial and recreational fisheries. The Tamarac River, a major tributary to the Red Lakes, hosts a substantial Walleye spawning migration annually. The river drains the largest peat bog in the lower 48 states and thus experiences low dissolved oxygen at times. It is largely unknown how the potential anoxic bog water affects Walleye reproductive success each year and subsequent year class strength. Fyke nets were set from 2014-2018 to assess the relative abundance of adult Walleye spawning …
Growth Of Pelagic Age-0 Yellow Perch In Relation To Hatch Dates And Water Temperature In North-Central Minnesota Lakes, Ethan Karppinen
Growth Of Pelagic Age-0 Yellow Perch In Relation To Hatch Dates And Water Temperature In North-Central Minnesota Lakes, Ethan Karppinen
Biology Graduate Theses
Exposure to consistent water warming rates and access to abundant populations of edible sized zooplankton affects growth and increases the probability of survival for newly hatched Yellow Perch Perca flavescens. Seven lakes with varying physical characteristics were selected in north-central Minnesota to study abiotic (water temperature) and biotic (zooplankton community and fish growth) progressions during the spring and early summer (April-June). Mean water temperatures from ice-out to 28 June (11.98-14.62 °C) had significant relationships with mean depth (P < 0.01, R? = 0.85), max depth (P < 0.01, R? = 0.73), and total volume (P < 0.01, R2 = 0.54). Hatch periods ranged from 13 to 19 days in 2015 and 13 to 25 days in 2016. Cumulative degree-days (CDD) were used to predict Yellow Perch hatch periods and explain growth. CDD predicted 21-81% of hatch periods in 2015 and 11-50% in 2016. Mean predicted total lengths at 28 June were 19.65-30.41 mm in 2015 and 20.88-28.54 mm in 2016. There was a significant relationship between CDD and predicted total length (R? = 0.62, P < 0.01) to explain differences in Yellow Perch total length while inhabiting the pelagic zone. Observed gape measurements were highly correlated with predicted gapes from the Schael formula (R? = 0.89, P < 0.01) that was used to assess the availability of edible sized zooplankton for age-0 Yellow Perch in each lake. No predator-prey mismatches were found and earlier hatch dates produced age-0 Yellow Perch with greater predicted total lengths in late June on the majority of lakes. This suggests that earlier hatched Yellow perch have an advantage over later hatched Yellow Perch in attaining greater lengths by late June. Our study provides information on a variety of physical and biological progressions in lakes, which may be used for fisheries management practices in the future.
Population Characteristics Of A Closed Northern Pike (Esox Lucius) Catch-And-Release Population In Minnesota, John Kempe
Population Characteristics Of A Closed Northern Pike (Esox Lucius) Catch-And-Release Population In Minnesota, John Kempe
Biology Graduate Theses
Literature regarding catch-and-release populations of Northern Pike are rare and provide a unique perspective on their population dynamics. Shingobee Lake is a 64- ha mesotrophic lake with a maximum depth of 12.2 m located in northern Minnesota. Northern Pike fishing has been catch-and-release only since 2005, and there are no public accesses on the lake. Annual ice-out trap-netting occurred from 2009-2017, and a sizable amount of the Northern Pike recaptured via trapnet or angling had been previously tagged (37-59%). The lack of exploitation and high tagging percentage provided a unique opportunity to study the population dynamics of Northern Pike. Shinogbee’s …
Assessment Of American White Pelican Predation And Reproductive Success Of Walleye In The Tamarac River, Mn, Jake Graham
Assessment Of American White Pelican Predation And Reproductive Success Of Walleye In The Tamarac River, Mn, Jake Graham
Biology Graduate Theses
The Tamarac River is a major tributary of the Red Lakes MN, which provides an economically important multispecies fishery. The river experiences spring spawning migrations of northern pike, walleye, and white suckers. However, limited data exists related to reproductive success of fishes in the river. Furthermore, in the previous decade large congregations of American white pelicans (AWPE) have been observed using the Tamarac River as a foraging ground each spring. Assessing reproductive success of fishes in the Tamarac River provides a more holistic understanding of fish ecology in the river and the importance of the Tamarac River to the Red …
Social Media & Political Engagement: Environmental Organizations, Social Media And Political Engagement, Tyler Cate
Social Media & Political Engagement: Environmental Organizations, Social Media And Political Engagement, Tyler Cate
Political Science Theses and Capstones
Social media is becoming more important in today’s digital society, but how effective is the use of social media when it comes to political engagement? How do environmental organizations use social media and is it effective in encouraging their “followers” to engage in online and/or offline political activity? I collected Facebook and Twitter data from ten environmental organizations to assess the effectiveness of each posting. I hypothesize that the groups making direct calls for action via social media receive a greater response – beyond “clicktivism” or “slacktivism” – than the groups that do not. The data includes the number of …
The Political History Of Sugarcane-Based Ethanol In Brazil, Joshua Gagner
The Political History Of Sugarcane-Based Ethanol In Brazil, Joshua Gagner
Political Science Theses and Capstones
With the Middle East putting an embargo on oil in 1973, oil prices ascended to levels that made importation of oil expensive. Brazil also faced another issue with sugar prices going down in 1973, putting much of their sugar supply on reserve. Brazil’s military government then made a decision to adopt the sugarcane-based ethanol program, Pro-Alcool. Pro-Alcool’s goal was to produce an alternative energy source to gasoline and take pressure off of oil importation. While initially intended to be a short-term fix, a second oil strike in 1979 pushed Pro-Alcool to higher levels. Oil industries were initially opposed to ethanol …
White Bass Assessment In Regards To Changes In Water Level On Lake Traverse, Aaron Wilson
White Bass Assessment In Regards To Changes In Water Level On Lake Traverse, Aaron Wilson
Journal of Earth and Life Science
Until recently the white bass Morone chrysops has been somewhat ignored by anglers, more so in Minnesota than other states; most likely due to their limited distribution throughout the state. However, with more anglers becoming aware of the sporting and culinary potentials of white bass, interests have risen. With this rise in angler interest, there should be a rise in white bass assessments. Knowing what factors may be influencing white bass population dynamics will allow fisheries professionals to better manage and protect white bass fisheries. White bass are often found in rivers and impoundments were dams are present and water …
Rebuilding After Hurricane Katrina: The Big Easy, And The Long Road Home., Jennifer S. Boucher
Rebuilding After Hurricane Katrina: The Big Easy, And The Long Road Home., Jennifer S. Boucher
Political Science Theses and Capstones
The objective of this study is to analyze the influences of demographic patterns, planning politics and funding disbursement processes in rebuilding New Orleans, after Hurricane Katrina's storm surge engulfed several neighborhoods of Orleans Parish Louisiana, on August 29th 2005.Immediately following the storm surge, national opinion makers began debating the possibility of shrinking the footprint of New Orleans, as part of the rebuilding process. Although recovery efforts were begun almost immediately, at the five year anniversary of the cataclysmic natural disaster more than a hundred thousand of New Orleanians are still displaced. Utilizing regression analysis as a quantitative measure and qualitative …
Why Do Some Nations Have More Renewable Energy Policies?, Melissa Dahl
Why Do Some Nations Have More Renewable Energy Policies?, Melissa Dahl
Political Science Theses and Capstones
Some nations have considerably more renewable energy policies than others and this research is attempting to discover why. Renewable energy use is quickly growing in our world and has become a major topic in today’s politics. Existing literature suggests various theories as to why some nations have more renewable energy policies than others. I test these theories with data from two major data sources; REN21, the Renewable Energy Policy Network for the 21st Century, and the International Energy Agency. I anticipate that nations with a larger number of effective political parties, higher GDPs, and larger population would have more renewable …
Human Nature, Rachel Goble
Human Nature, Rachel Goble
Honors Capstones
Capstone submitted as a graduation requirement for the BSU Honors Program.
Affects Of Organic Fertilizers On The Growth And Biomass Production Of Agricultural Crops, Deanna Marshik
Affects Of Organic Fertilizers On The Growth And Biomass Production Of Agricultural Crops, Deanna Marshik
Honors Capstones
Capstone submitted as a graduation requirement for the BSU Honors Program.