Digital Commons Network^™

Biogeographic Patterns In Members Of Globally Distributed And Dominant Taxa Found In Port Microbial Communities., Ryan B Ghannam, Laura G. Schaerer, Timothy M. Butler, Stephen M Techtmann

Michigan Tech Publications, Part 1

We conducted a global characterization of the microbial communities of shipping ports to serve as a novel system to investigate microbial biogeography. The community structures of port microbes from marine and freshwater habitats house relatively similar phyla, despite spanning large spatial scales. As part of this project, we collected 1,218 surface water samples from 604 locations across eight countries and three continents to catalogue a total of 20 shipping ports distributed across the East and West Coast of the United States, Europe, and Asia to represent the largest study of port-associated microbial communities to date. Here, we demonstrated the utility …

Volume 4, Chapter 2-1: Stream Physical Factors Affecting Bryophyte Distribution, Janice M. Glime

Bryophyte Ecology Subchapters

No abstract provided.

The Effect Of Seasonality On Yellow Perch Ecology And Ecotoxicology Within Lake Manganese, Bailey Duxbury

Dissertations, Master's Theses and Master's Reports

Seasonality is a consistent component of aquatic ecosystems yet most fish biological and ecotoxicological studies commonly employ field sampling protocols focused during the warm open water season with minimal emphasis placed on winter sampling, especially for north-temperate latitude ecosystems. Such strategies limit our understanding of poikilotherm biology and ecology during the overwintering seasons. Here, I investigated seasonal changes in yellow perch (Perca flavescens) biology, ecology and ecotoxicology over a one-year period in Lake Manganese. Significant seasonality was observed for metrics including fish energy densities (kJ/g), gonadosomatic indices, whole-body lipid contents, and carbon stable isotope values (δ¹³C). …

Tooth Fracture Frequency In Gray Wolves Reflects Prey Availability., Blaire Van Valkenburgh, Rolf O. Peterson, Douglas W Smith, Daniel R Stahler, John A. Vucetich

Michigan Tech Publications, Part 1

Exceptionally high rates of tooth fracture in large Pleistocene carnivorans imply intensified interspecific competition, given that tooth fracture rises with increased bone consumption, a behavior that likely occurs when prey are difficult to acquire. To assess the link between prey availability and dental attrition, we documented dental fracture rates over decades among three well-studied populations of extant gray wolves that differed in prey:predator ratio and levels of carcass utilization. When prey:predator ratios declined, kills were more fully consumed, and rates of tooth fracture more than doubled. This supports tooth fracture frequency as a relative measure of the difficulty of acquiring …

Ecological Studies Of Wolves On Isle Royale, 2018-2019, Sarah R. Hoy, Rolf O. Peterson, John A. Vucetich

Ecological Studies of Wolves on Isle Royale

Annual Report 2018-2019

Volume 4, Chapter 8-7: Tropics: Lowland Rainforests, Janice M. Glime

Bryophyte Ecology Subchapters

No abstract provided.

Volume 4, Chapter 8-9: Tropics: Submontane And Montane, Janice M. Glime

Bryophyte Ecology Subchapters

No abstract provided.

Volume 4, Chapter 8-8: Tropics: Elevation, Janice M. Glime

Bryophyte Ecology Subchapters

No abstract provided.

Volume 4, Chapter 8-11: Tropics: Hydric And Xeric Habitats, Janice M. Glime

Bryophyte Ecology Subchapters

No abstract provided.

Volume 4, Chapter 8-12: Tropics: Rocks And Inselbergs, Janice M. Glime, Tatiany Oliveira Da Silva

Bryophyte Ecology Subchapters

No abstract provided.

Spread Of Emerging Contaminants In Water Distribution Systems, Danielle Pilarski

Dissertations, Master's Theses and Master's Reports

Emerging contaminants are a growing concern to humans and the environment. Studies have shown these contaminants are present in the environment through continuous release into surface waters from wastewater treatment effluent, manufacturing processes, and agricultural use. The effects of these contaminants have been observed in ecological studies, but they have not yet been well studied for long term exposure in humans. These emerging contaminants have also not been well studied to determine the rates at which they decay or how they move through distribution systems. This study aims to determine the importance of decay rate on concentration throughout a distribution …

Examining Aspen Expansion From Before And After Prescribed Burning In A Native Fescue Grassland Through Geospatial Techniques, Christopher Anderson

Dissertations, Master's Theses and Master's Reports

Native fescue (Fescue spp.) grasslands of the Intermountain West have become increasingly scarce due to the advent of modern agriculture, the loss of Indigenous people’s land management practices, modern wildfire management and the extirpation of bison (Bison bison bison). Native grassland is a biodiversity hot-spot, is significant for carbon sequestration, and essential to many species of flora and fauna that occur in the ecosystem. Our study site, on the Rocky Mountain Front in Waterton Lakes National Park, Alberta Canada, consists of 30 discrete aspen stands (Populous tremuloides) which are encroaching on this declining shortgrass fescue …

Gendered Recreational Fisheries Management And North American Natural Resource Policy, Erin Burkett

Dissertations, Master's Theses and Master's Reports

This dissertation applies feminist theory to investigate women’s participation in wildlife-based recreation and how natural resource management organizations conduct stakeholder engagement in a North American context. Gendered social processes, including norms and expectations, as well as gendered cultures, can constrain women’s participation in recreation through social sanctions and disenfranchisement. Gender and leisure scholars have studied these dynamics in sport and leisure contexts, but how individuals negotiate these constraints is understudied in a wildlife-based recreation context. Social constructions of gender also contribute to imbalances of power within formal natural resource management organizations and influence how stakeholder engagement policies and programs are …

Ecological Studies Of Wolves On Isle Royale, 2017-2018, Rolf O. Peterson, John A. Vucetich, Sarah R. Hoy

Ecological Studies of Wolves on Isle Royale

Annual Report 2017-2018

Sustainable Forest Bioenergy Development Strategies In Indochina: Collaborative Effort To Establish Regional Policies, Victor J. Bruckman, Maliwan Haruthaithanasan, Raymond O. Miller, Toru Terada, Anna-Katharina Brenner, Florian Kraxner, David J. Flaspohler

Michigan Tech Publications, Part 1

We conducted a feasibility study in Indochina (Cambodia, Laos, Myanmar, Thailand, and Vietnam) with the aim of promoting biomass and bioenergy markets, technology transfer, rural development, and income generation. Policy development is guided by the International Union of Forest Research Institutions (IUFRO) Task Force “Sustainable Forest Bioenergy Network”. In this paper, we highlight the achievements up to now and present results of a multi-stakeholder questionnaire in combination with a quantitative analysis of the National Bioenergy Development Plans (NBDPs). We found a gap between official documents and working group assessments. NBDPs are focused on the market development, technology transfer, and funding …

Chapter 008 - Tropics, Janice M. Glime

Bryophyte Ecology Volume 4: Habitat and Role

Explore the contents of Bryophyte Ecology, Volume 4, Chapter 8 - Tropics by clicking the links above. For the Contents section of this ebook, as well as Volumes 1 through 5, please visit the Bryophyte Ecology Main Page.

Use CTRL+F to easily search within PDF files.

Ebook sponsored by Michigan Technological University and the International Association of Bryologists.

Volume 4, Chapter 8-1: Tropics: General Ecology, Janice M. Glime, S. R. Gradstein

Bryophyte Ecology Subchapters

No abstract provided.

Volume 4, Chapter 8-3: Tropics: Epiphyte Ecology, Part 1, Janice M. Glime

Bryophyte Ecology Subchapters

No abstract provided.

Volume 4, Chapter 8-2: Tropics: Geographic Diversity Differences, Janice M. Glime

Bryophyte Ecology Subchapters

No abstract provided.

Volume 4, Chapter 8-5: Tropics: Epiphyte Geographic Diversity, Janice M. Glime

Bryophyte Ecology Subchapters

No abstract provided.

Modeling Canopy Effect In The Great Lakes Cladophora Model, Ankita Bakshi

Dissertations, Master's Theses and Master's Reports

Cladophora glomerata is a filamentous green alga native to the Great Lakes. However, its nuisance growth in phosphorus rich waters negatively affects the lakes’ aesthetic and water quality. The Great Lakes Cladophora Model (GLCM) v1, developed in 1982, was the first mechanistic model to simulate Cladophora growth basing phosphorus availability and environmental conditions followed by Cladophora Growth Model and GLCM v2. In this study, the light and temperature mediation factors for Cladophora net growth are revised as a necessary step prior to the development of a self-shading algorithm. The concept of a fixed-value, maximum achievable biomass (carrying capacity) employed in …

Ecological Implications Of Foraging And Life-History In Three Cold-Adapted Species, Andrew Von Duyke

Dissertations, Master's Theses and Master's Reports

This research investigates the ecology of: ringed seals (Pusa hispida), moose (Alces alces), and bowhead whales (Balaena mysticetus). Each of these species draws upon specialized strategies to meet the physical demands of life in their extreme environments. However, they are currently experiencing unprecedented changes in their habitats. This work adds to what is known about the behavior, physiology, and population dynamics of cold-adapted species—providing insights of value for an improved understanding of foraging and life-history theory, and informing conservation and ecosystem monitoring efforts. Chapter 1 provides a brief introduction to the scope of work …

Remotely Piloted Aircraft: Forest And Ecology Applications, Curtis Edson

TechTalks

In the summer of 2017 three new research projects were started using remotely piloted aircraft (drone) to collect forest and ecological data. In Michigan Technological University's research forest (Ford Forest) we began a forest biomass study by collecting imagery, including visible spectrum from a drone, as well as hyperspectral and LiDAR imagery from a human pilot aircraft; in the Hiawatha National Forest we collected visible and near-infrared (NIR) imagery for invasive species remediation and coastal wetlands mapping; and in Waterton Lakes National Park, Alberta Canada we collected visible and NIR imagery in support of an ongoing ecological study observing interactions …

Ecological Studies Of Wolves On Isle Royale, 2016-2017, Rolf O. Peterson, John A. Vucetich

Ecological Studies of Wolves on Isle Royale

Annual Report 2016-2017

Chapter 2 - Protozoa, Janice M. Glime

Bryophyte Ecology Volume 2: Bryological Interaction

Explore the contents of Bryophyte Ecology, Volume 2, Chapter 2 - Protozoa by clicking the links above. For the Contents section of this ebook, as well as Volumes 1 through 5, please visit the Bryophyte Ecology Main Page.

Use CTRL+F to easily search within PDF files.

Ebook sponsored by Michigan Technological University and the International Association of Bryologists.

Chapter 13 - Fish, Janice M. Glime

Bryophyte Ecology Volume 2: Bryological Interaction

Explore the contents of Bryophyte Ecology, Volume 2, Chapter 13 - Fish by clicking the link above. For the Contents section of this ebook, as well as Volumes 1 through 5, please visit the Bryophyte Ecology Main Page.

Use CTRL+F to easily search within PDF files.

Ebook sponsored by Michigan Technological University and the International Association of Bryologists.

Chapter 1 - Introduction, Janice M. Glime

Bryophyte Ecology Volume 1: Physiological Ecology

Explore the contents of Bryophyte Ecology, Volume 1, Chapter 1 - Introduction by clicking the link above. For the Contents section of this ebook, as well as Volumes 1 through 5, please visit the Bryophyte Ecology Main Page.

Use CTRL+F to easily search within PDF files.

Ebook sponsored by Michigan Technological University and the International Association of Bryologists.

Volume 1, Chapter 4-5: Adaptive Strategies: Growth And Life Forms, Janice M. Glime

Bryophyte Ecology Subchapters

No abstract provided.

Volume 2, Chapter 12-17: Terrestrial Insects: Holometabola - Diptera Biology And Habitats, Janice M. Glime

Bryophyte Ecology Subchapters

No abstract provided.

Ionic Liquid Extraction Unveils Previously Occluded Humic-Bound Iron In Peat Soil Pore Water, Timothy J. Veverica, Evan S. Kane, Amy Marcarelli, Sarah A. Green

Department of Biological Sciences Publications

Globally, peatland ecosystems store tremendous amounts of C relative to their extent on the landscape, largely owing to saturated soils which limit decomposition. While there is still considerable uncertainty regarding CO₂ production potential below the water table in peatland ecosystems, extracellular Fe reduction has been suggested as a dominant pathway for anaerobic metabolism. However, colorimetric methods commonly used to quantitate Fe and partition between redox species are known to be unreliable in the presence of complex humic substances, which are common in peatland pore water. We evaluated both the standard o-phenanthroline (o-P) Method and an ionic …