The role of aquatic vegetation in Iowa lakes

Chapter 2 Abstract - ABIOTIC FACTORS INFLUENCE OF AQUATIC VEGETATION ABUNDANCE IN IOWA LAKES In spite of the importance of aquatic vegetation to lakes, there are ongoing conflicts between the need to manage vegetation for multiple users of a lake and the need for aquatic vegetation for the aquatic biota. In 2007, a study was undertaken to assess the relationships between water quality and aquatic vegetation communities in 13 Iowa lakes. These lakes varied in location and fishery management protocols. The total number of emergent/floating aquatic vegetation species per lake varied from six to 14 species, while the total number of submerged aquatic vegetation species per lake varied from three to 11 species. Mean emergent/floating aquatic vegetation abundance and submerged aquatic vegetation were compared against physical-chemical parameters. There were four significant relationships between physical-chemical parameters (alkalinity, hardness, chlorophyll a, and temperature) and emergent/floating vegetation abundance and significant relationships between submerged aquatic vegetation and chlorophyll a, Secchi-depth, total suspended solids, and total Kjeldahl nitrogen. The lakes with the best values of physical-chemical indicators typically had higher submerged aquatic vegetation abundance, but not necessarily diversity. The nMDS plot shows relationships the lakes have with emergent/ floating vegetation and submerged aquatic vegetation species as well as abundance. The emergent/floating aquatic vegetation ordination indicates that lakes Meadow, Greenfield, Anita, and Mormon Trail share similar plant species. The submerged aquatic vegetation nMDS plot reiterates the strong negative relationship between Secchi-depth and chlorophyll a levels, and lakes that share these characteristics. Overall, each lake seemingly similar at first, has many unique characteristics, making it difficult to set up a comprehensive guideline for all Iowa lakes vegetation management practices. By using simple linear regression, Shannon diversity index, and nMDS plots, managers can start to understand similarities and differences among lakes with reference to aquatic vegetation and physical-chemical parameters. Chapter 3 Abstract- LITTORAL INFLUENCES ON ZOOPLANKTON POPULATIONS AND JUVENILE BLUEGILLS IN IOWA LAKES Aquatic vegetation helps maintain the overall integrity of aquatic ecosystems. Lakes with vegetation are characteristic of reduced chlorophyll concentrations, lower phytoplankton densities, and large-bodied cladocerans. Littoral zones with dense vegetation beds accommodate invertebrate communities that are richer in abundance and diversity compared to barren littoral zones. Two objectives of this research were to determine whether vegetated and non-vegetated littoral zones have similar zooplankton populations, and the role of the littoral zone upon juvenile bluegills food habits. Vegetation-loving cladocerans, e.g., Chydorus spp., were typically found in higher abundance in vegetated areas compared to open littoral and limentic zones, while limnetic zooplankton, Daphnia spp. was often found in higher concentrations in pelagic zone. Regardless of fish size (≤50mm and \u3e50mm), prey selectivity was similar. However, different sampling periods (spring/summer vs. fall) showed different prey choices

Pottery Analysis of The Nonnast Site (39ML0009), Marshall County, South Dakota

The Nonnast site (39ML0009) is a Plains Village site located in the Prairie Pothole region of Marshal County, South Dakota. The site was initially identified by a surface scatter of pottery that contained both Great Oasis and Mill Creek ceramic types. The Nonnast site is located outside the normal distribution for these two cultures which are concentrated in southeast South Dakota and northwest Iowa. The site was formally tested in 2015 then again in 2017. The resulting thesis is an analysis of the ceramic and other culturally diagnostic material recovered from the excavations. The goal of the research is to firmly establish who occupied the Nonnast site and when. With the use of AMS dates, chi-square statistical analysis and ceramic typologies it was determined that the Nonnast site contains one component that most closely resembles the Over focus of the eastern division of the Initial Middle Missouri

PB1803 A General Guide to Pricing for Direct Farm Marketers and Value-Added Agricultural Entrepreneurs

Version 3.

The Not-So Noble Lie: The Militarization of the Japanese Population Through Education

https://scholarworks.moreheadstate.edu/student_scholarship_posters/1109/thumbnail.jp

Association of physical health multimorbidity with mortality in people with schizophrenia spectrum disorders: Using a novel semantic search system that captures physical diseases in electronic patient records

OBJECTIVE Single physical comorbidities have been associated with the premature mortality in people with schizophrenia-spectrum disorders (SSD). We investigated the association of physical multimorbidity (≥two physical health conditions) with mortality in people with SSD. METHODS A retrospective cohort study between 2013 and 2017. All people with a diagnosis of SSD (ICD-10: F20–F29), who had contact with secondary mental healthcare within South London during 2011–2012 were included. A novel semantic search system captured conditions from electronic mental health records, and all-cause mortality were retrieved. Hazard ratios (HRs) and population attributable fractions (PAFs) were calculated for associations between physical multimorbidity and all-cause mortality. RESULTS Among the 9775 people with SSD (mean (SD) age, 45.9 (15.4); males, 59.3%), 6262 (64%) had physical multimorbidity, and 880 (9%) died during the 5-year follow-up. The top three physical multimorbidity combinations with highest mortality were cardiovascular-respiratory (HR: 2.23; 95% CI, 1.49–3.32), respiratory-skin (HR: 2.06; 95% CI, 1.31–3.24), and respiratory-digestive (HR: 1.88; 95% CI, 1.14–3.11), when adjusted for age, gender, and all other physical disease systems. Combinations of physical diseases with highest PAFs were cardiovascular-respiratory (PAF: 35.7%), neurologic-respiratory (PAF: 32.7%), as well as respiratory-skin (PAF: 29.8%). CONCLUSIONS Approximately 2/3 of patients with SSD had physical multimorbidity and the risk of mortality in these patients was further increased compared to those with none or single physical conditions. These findings suggest that in order to reduce the physical health burden and subsequent mortality in people with SSD, proactive coordinated prevention and management efforts are required and should extend beyond the current focus on single physical comorbidities

The Grizzly, February 16, 2006

Hoodoo Man Arthur Flowers Delivers Captivating Speech at Ursinus • USGA Holds First Meeting of Semester • Francophone Film Festival: Almost Peaceful • Georgetown Professor to Lecture at Ursinus • Getting to Know Your Glands • Spiritual Experiences in Paris • Meet the New Director of Facilities Services and Keep Current with Bomberger Renovations • Recycling Myths Revealed • Retraction on Parking Article • Broken Social Scene a Must Have for Indie Fans • Lone Senior Walks Off a Winnerhttps://digitalcommons.ursinus.edu/grizzlynews/1706/thumbnail.jp

The Grizzly, February 22, 2007

Students Join with Local Labor Leaders to Confront Jones Apparel Group • Francophone Film Marathon • Gardasil • WeCAN Strike • New Group Fighting Cancer • The How Article • Spotlight on Dr. Ross Doughty • Nutrition Tips: Stretch it Out! • An Afternoon with Billy Bob Thornton • Opinions: Fixing the Primaries • UC Wrestling Wins Fifth Running CC Championship • Ursinus Senior Flying Through Final Semester with Wngshttps://digitalcommons.ursinus.edu/grizzlynews/1732/thumbnail.jp

The Grizzly, April 27, 2006

Full Auditorium Discusses Solutions to Diversity Issues at Forum • A Senior Reflects on Her Ursinus Experience • Annual Student Art Show Opens • Crowding First Base • One Last Look Back • Students\u27 Artwork Featured Permanently in Myrin Library • Exploring the Nature of Suburban Sprawl • Opinions: Unnecessary Police Watch; Organic Obsession • Year in Review, Dynasties and Disappointmentshttps://digitalcommons.ursinus.edu/grizzlynews/1714/thumbnail.jp