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Assessing Beaver Dam Dynamics In The Logan-Little Bear Watershed, Connor Penrod 2019 Utah State University

Assessing Beaver Dam Dynamics In The Logan-Little Bear Watershed, Connor Penrod

All Graduate Plan B and other Reports

This paper seeks to address a knowledge gap concerning how flood events impact beaver dams over time. To address this gap, I took four time-snapshots of beaver dams, mapping them across the Utah portion of the Logan-Little Bear watershed, from 2009 to 2016 to bookend a large flood event in 2011. I assessed dam status (intact, breached, or blown out) for each dam mapped to assess the impact of the large spring runoff on the dam status. Assessing dam status over time allowed me to assess the change in condition over time, from before to several years after, while also ...


Climatic Controls On Peatland Black Spruce Growth In Relation To Water Table Variation And Precipitation, S. F. Dymond, A. W. D'Amato, R. K. Kolka, P. V. Bolstad, S. D. Sebestyen, K. Gill, M. T. Curzon 2019 University of Minnesota - Duluth

Climatic Controls On Peatland Black Spruce Growth In Relation To Water Table Variation And Precipitation, S. F. Dymond, A. W. D'Amato, R. K. Kolka, P. V. Bolstad, S. D. Sebestyen, K. Gill, M. T. Curzon

Miranda Curzon

Prior research has demonstrated the importance of water limitations and increasing temperatures on upland black spruce (Picea mariana [Mill.] B.S.P.) tree growth, which is a dominant component of the North American boreal forest. However, little work has been done to investigate the connectivity between growth and hydro‐climate in peatland black spruce systems. The boreal forest is the largest global terrestrial biome and is highly threatened due to current and projected increases in temperatures for the northern latitudes. Here we explore the dynamics among annual black spruce growth, climate, and water table elevations using 45 years of in ...


Potential Economic Impacts Of Allocating More Land For Bioenergy Biomass Production In Virginia, Thomas O. Ochuodho, Janaki R. R. Alavalapati, Pankaj Lal, Domena A. Agyeman, Bernabas Wolde, Pralhad Burli 2019 University of Kentucky

Potential Economic Impacts Of Allocating More Land For Bioenergy Biomass Production In Virginia, Thomas O. Ochuodho, Janaki R. R. Alavalapati, Pankaj Lal, Domena A. Agyeman, Bernabas Wolde, Pralhad Burli

Pankaj Lal

The growing attention to renewable energy and rural development has created greater demand for production of biomass feedstock for bioenergy. However, forest growth rates and the amount of land in most existing forests may not be sufficient to sustainably supply the forest biomass required to support existing forest products industries and the expanding bioenergy industry. Additionally, concerns about agricultural land use competition have dampened expansion of biomass production on agricultural land base. One of the ways to meet the growing forest biomass feedstock demand for bioenergy production is by allocating currently marginal non-forested land for growing bioenergy feedstocks. In Virginia ...


Morphological Identification Of Bighead Carp, Silver Carp, And Grass Carp Eggs Using Random Forests Machine Learning Classification, Carlos A. Camacho, Christopher J. Sullivan, Michael J. Weber, Clay L. Pierce 2019 Iowa State University

Morphological Identification Of Bighead Carp, Silver Carp, And Grass Carp Eggs Using Random Forests Machine Learning Classification, Carlos A. Camacho, Christopher J. Sullivan, Michael J. Weber, Clay L. Pierce

Michael J Weber

Visual identification of fish eggs is difficult and unreliable due to a lack of information on morphological egg characteristics of many species. We used random forests machine learning to predict the identity of genetically identified Bighead Carp (Hypophthalmichthys nobilis), Grass Carp (Ctenopharyngodon idella), and Silver Carp (H. molitrix) eggs based on egg morphometric and environmental characteristics. Family, genus, and species taxonomic level random forests were explored to assess variable performance and accuracy. Bighead Carp, Grass Carp, and Silver Carp egg characteristics were similar and difficult to distinguish from one another. When combined into a single invasive carp class, random forests ...


Morphological Identification Of Bighead Carp, Silver Carp, And Grass Carp Eggs Using Random Forests Machine Learning Classification, Carlos A. Camacho, Christopher J. Sullivan, Michael J. Weber, Clay L. Pierce 2019 Iowa State University

Morphological Identification Of Bighead Carp, Silver Carp, And Grass Carp Eggs Using Random Forests Machine Learning Classification, Carlos A. Camacho, Christopher J. Sullivan, Michael J. Weber, Clay L. Pierce

Clay L. Pierce

Visual identification of fish eggs is difficult and unreliable due to a lack of information on morphological egg characteristics of many species. We used random forests machine learning to predict the identity of genetically identified Bighead Carp (Hypophthalmichthys nobilis), Grass Carp (Ctenopharyngodon idella), and Silver Carp (H. molitrix) eggs based on egg morphometric and environmental characteristics. Family, genus, and species taxonomic level random forests were explored to assess variable performance and accuracy. Bighead Carp, Grass Carp, and Silver Carp egg characteristics were similar and difficult to distinguish from one another. When combined into a single invasive carp class, random forests ...


Investing In The New Blue Economy: The Changing Role Of International Development Organizations In Catalyzing Private Sector Investment In Support Of Regional Strategic Action Programmes For The Sustainable Development Of Coasts And Oceans, Ryan Whisnant, Veerle Vandeweerd 2019 Center for the Blue Economy

Investing In The New Blue Economy: The Changing Role Of International Development Organizations In Catalyzing Private Sector Investment In Support Of Regional Strategic Action Programmes For The Sustainable Development Of Coasts And Oceans, Ryan Whisnant, Veerle Vandeweerd

Journal of Ocean and Coastal Economics

Over the last 20 years, governments sharing common coastal and ocean ecosystems have developed and agreed on concrete regional action programs to stop and, in some cases, reverse a trend of deteriorating coastal and ocean resources. Implementation of these action programs requires significant investments by the public and private sectors alike, with the potential for substantial economic growth and enhanced social well-being. For this to happen, new institutional arrangements, technologies, and financial vehicles and asset classes are needed to mainstream innovative “blue economy” projects that have the potential to transition economies and communities to more sustainable development paths.

This paper ...


Reproductive Parameters And Female Breeding Season Survival Of Rio Grande Wild Turkeys In South Central Texas, Jacob White 2019 Louisiana State University and Agricultural and Mechanical College

Reproductive Parameters And Female Breeding Season Survival Of Rio Grande Wild Turkeys In South Central Texas, Jacob White

LSU Master's Theses

Historically, Rio Grande wild turkeys in south central Texas have been at lower densities than other portions of the state. Within the Oak-Prairie Wildlife District of Texas, Rio Grande wild turkey regulatory restrictions are different for counties in the eastern and western portions of the ecoregion. Due to perceived increases in turkey density in the eastern portion of the ecoregion (hereafter 1-bird zone), Texas Parks and Wildlife Department (TPWD) considered increasing the bag limit to match counties in the western portion of the district (hereafter 4-bird zone) in order to increase hunting opportunities. However, if regulatory changes are to be ...


Panel 11. Paper 11.3: Views Through Rose-Colored Glasses: The Need For Diverse Lenses To Support Rural Landscape Heritage, Steve H. Brown Dr, Cari Goetcheus 2019 The University of Sydney

Panel 11. Paper 11.3: Views Through Rose-Colored Glasses: The Need For Diverse Lenses To Support Rural Landscape Heritage, Steve H. Brown Dr, Cari Goetcheus

Rural Heritage - Landscapes and Beyond / PATRIMOINE RURAL: Paysages et au-delà

The ICOMOS-IFLA Principles Concerning Rural Landscape as Heritage (the Principles; 2017) provide a comprehensive outline of the fields and work required to better recognise and safeguard rural landscape heritage. The Principles acknowledge that the field of heritage conservation cannot sustain rural places and traditional rural heritage landscapes on their own, but must engage with a diverse breadth of disciplines to support and safeguard these spaces. The Principles seek to address loss and adverse changes to rural landscapes and their associated communities through the recognition, safeguarding, and promotion of their heritage values. They aim to promote an appropriate balance between economic ...


The Economic Impacts Of Blackbird (Icteridae) Damage To Sunflower In The Usa, Karina Ernst, Julie Elser, George Linz, Hans Kandel, Jason Holderieath, Samantha DeGroot, Steven Shwiff, Stephanie Shwiff 2019 USDA APHIS Wildlife Services

The Economic Impacts Of Blackbird (Icteridae) Damage To Sunflower In The Usa, Karina Ernst, Julie Elser, George Linz, Hans Kandel, Jason Holderieath, Samantha Degroot, Steven Shwiff, Stephanie Shwiff

Jason Holderieath

BACKGROUND: Blackbird (Icteridae) damage to ripening sunflower (Helianthus annuus L.) has been a persistent economic issue in the USA for the last five decades. To quantify losses, we surveyed blackbird damage from 2001 to 2013 (excluding 2004) to physiologically mature sunflower in eight states: North Dakota, South Dakota, Texas, Nebraska, Minnesota, Colorado, Kansas, and Vermont.

RESULTS:We pooled data gathered during the most recent 5 years (2009 to 2013) of the survey and found losses averaged $US2.5 million and $US11.3 million for confectionery and oilseed hybrids, respectively. Three states, North Dakota, South Dakota, and Nebraska, had sufficient acreage ...


Resilience Reconciled, Craig R. Allen, David G. Angeler, Brian C. Chaffin, Dirac Twidwell, Ahjond Garmestani 2019 University of Nebraska - Lincoln

Resilience Reconciled, Craig R. Allen, David G. Angeler, Brian C. Chaffin, Dirac Twidwell, Ahjond Garmestani

Papers in Natural Resources

Resilience scholarship continues to inspire opaque discourse and competing frameworks often inconsistent with the complexity inherent in social–ecological systems. We contend that competing conceptualizations of resilience are reconcilable, and that the core theory is useful for navigating sustainability challenges.

Resilience as a scientific concept exploded in the early 2000s and is now being adopted by a range of disciplines and by a wide diversity of actors, from city planners to networks of global protectedarea managers. Resilience concepts are now integrated within national and international calls for proposals, research initiatives and centres in both the biophysical and social sciences. However ...


Blue Biotechnology, Renewable Energy, Unconventional Resources And Products As Emerging Frontiers At Sea, Sheikh Aftab Uddin, Mohammad Mahmudul Islam 2019 University of Chittagong

Blue Biotechnology, Renewable Energy, Unconventional Resources And Products As Emerging Frontiers At Sea, Sheikh Aftab Uddin, Mohammad Mahmudul Islam

Journal of Ocean and Coastal Economics

Blue biotechnology, renewable energy and unconventional marine living resources are considered as emerging frontiers for enhancing ocean-based blue economy in Bangladesh. Blue biotechnology can help both fisheries and aquaculture industry by producing fish varieties that can become quicker, more beneficial, and greater with tastier flesh, by developing gene transfer technology to be used to develop the growth of fish or by using of monoclonal antibodies and DNA probes to new diagnostic strategies for pathogens. Transformation of marine bioresources (main, co-product and by-products) into food, medicine, animal feed and related bio-based items i.e. cosmetics, nutritional supplements, enzymes, agrichemicals etc could ...


Iowa Farm Energy Working Group, Carole Yates, Kamyar Enshayan 2019 University of Northern Iowa

Iowa Farm Energy Working Group, Carole Yates, Kamyar Enshayan

Kamyar Enshayan

The Farm Energy Working Group’s demonstration grants, field days and presentations by Iowa farmers helped show what can be done on the farm to increase energy efficiency and rely on renewable energy.


Mercury Concentrations In Bat Guano From Caves And Bat Houses In Florida And Georgia, Amy E. Edwards, Jenise L. Swall, Charles H. Jagoe 2019 Hanover County Government

Mercury Concentrations In Bat Guano From Caves And Bat Houses In Florida And Georgia, Amy E. Edwards, Jenise L. Swall, Charles H. Jagoe

Virginia Journal of Science

Previous studies have indicated that several pollutants are bioaccumulating in insectivorous bats, including the heavy metal mercury. This has resulted in an increased presence of mercury in bat waste (guano). In this study, we collected bat guano from ten caves in Florida and Georgia and two bat houses in Florida and analyzed the samples for mercury concentrations (ppm). Since the predominant bat species using caves (Myotis austroriparius) versus bat houses (Tadarida braziliensis) were different, the objective of this study was to make statistical comparisons of the mercury concentrations among caves, between caves and bat houses, and between bat houses. We ...


Untapped Capacity For Resilience In Environmental Law, Ahjond Garmestani, J. B. Ruhl, Brian C. Chaffin, Robin K. Craig, Helena F.M.W. van Rijswick, David G. Angeler, Carl Folke, Lance Gunderson, Dirac Twidwell, Craig R. Allen 2019 US Environmental Protection Agency, National Center for Environmental Economics

Untapped Capacity For Resilience In Environmental Law, Ahjond Garmestani, J. B. Ruhl, Brian C. Chaffin, Robin K. Craig, Helena F.M.W. Van Rijswick, David G. Angeler, Carl Folke, Lance Gunderson, Dirac Twidwell, Craig R. Allen

Papers in Natural Resources

Over the past several decades, environmental governance has made substantial progress in addressing environmental change, but emerging environmental problems require new innovations in law, policy, and governance. While expansive legal reform is unlikely to occur soon, there is untapped potential in existing laws to address environmental change, both by leveraging adaptive and transformative capacities within the law itself to enhance socialecological resilience and by using those laws to allow socialecological systems to adapt and transform. Legal and policy research to date has largely overlooked this potential, even though it offers a more expedient approach to addressing environmental change than waiting ...


Climatic Controls On Peatland Black Spruce Growth In Relation To Water Table Variation And Precipitation, S. F. Dymond, A. W. D'Amato, R. K. Kolka, P. V. Bolstad, S. D. Sebestyen, K. Gill, M. T. Curzon 2019 University of Minnesota - Duluth

Climatic Controls On Peatland Black Spruce Growth In Relation To Water Table Variation And Precipitation, S. F. Dymond, A. W. D'Amato, R. K. Kolka, P. V. Bolstad, S. D. Sebestyen, K. Gill, M. T. Curzon

Natural Resource Ecology and Management Publications

Prior research has demonstrated the importance of water limitations and increasing temperatures on upland black spruce (Picea mariana [Mill.] B.S.P.) tree growth, which is a dominant component of the North American boreal forest. However, little work has been done to investigate the connectivity between growth and hydro‐climate in peatland black spruce systems. The boreal forest is the largest global terrestrial biome and is highly threatened due to current and projected increases in temperatures for the northern latitudes. Here we explore the dynamics among annual black spruce growth, climate, and water table elevations using 45 years of in ...


Occurrence, Abundance And Associations Of Topeka Shiners (Notropis Topeka) In Restored And Unrestored Oxbows In Iowa And Minnesota, Usa, Nicholas T. Simpson, Alexander P. Bybel, Michael J. Weber, Clay L. Pierce, Kevin J. Roe 2019 Iowa State University

Occurrence, Abundance And Associations Of Topeka Shiners (Notropis Topeka) In Restored And Unrestored Oxbows In Iowa And Minnesota, Usa, Nicholas T. Simpson, Alexander P. Bybel, Michael J. Weber, Clay L. Pierce, Kevin J. Roe

Natural Resource Ecology and Management Publications

  1. In the USA, the Topeka shiner (Notropis topeka) is a federally listed endangered species that has been in decline for decades. A key reason for the decline is the alteration of naturally flowing streams and associated oxbow habitats resulting from land‐use changes. The focus of recent conservation efforts for Topeka shiners has been the restoration of oxbow habitats by removing sediment from natural oxbows until a groundwater connection is re‐established. This restoration practice has become common in portions of Iowa and south‐west Minnesota.
  2. The goals of this study were to compare the occurrence and abundance of Topeka ...


The Waters Of Antarctica: Do They Belong To Some States, No States, Or All States?, Linda A. Malone 2019 William & Mary Law School

The Waters Of Antarctica: Do They Belong To Some States, No States, Or All States?, Linda A. Malone

Linda A. Malone

Major issues and complexities arise when one is looking at the international puzzle that is Antarctica. Despite being uninhabited year round and lacking substantial long-term international law rules for sovereignty, states still try to claim their sovereignty over various parts of Antarctica. The consortium of states under the Antarctica Treaty System (“ATS”) then further aggravates these complexities, especially when other states outside of the ATS have been arguing for different regimes and approaches to dealing with Antarctica and resource exploitation. Due to these major issues and a desperate need for a resolution in times of global climate change, this Article ...


Book Review Of Eco-Pragmatism: Making Sensible Environmental Decisions In An Uncertain World, Lynda L. Butler 2019 William & Mary Law School

Book Review Of Eco-Pragmatism: Making Sensible Environmental Decisions In An Uncertain World, Lynda L. Butler

Lynda L. Butler

No abstract provided.


Tropical Tree Species Traits Drive Soil Cation Dynamics Via Effects On Ph: A Proposed Conceptual Framework, Ann E. Russell, Steven J. Hall, James W. Raich 2019 Iowa State University

Tropical Tree Species Traits Drive Soil Cation Dynamics Via Effects On Ph: A Proposed Conceptual Framework, Ann E. Russell, Steven J. Hall, James W. Raich

James W. Raich

Humid tropical forests are major players in the global carbon cycle, despite evidence that cations (rock‐derived, positively charged ions) can limit or co‐limit net primary productivity (NPP). In mature forests, tight cation cycling, i.e., without leaching losses, could maintain cation stocks on site. That mechanism does not explain how regenerating tropical secondary forest trees start from seeds and accrue large cation stocks in biomass, when growing on soils depleted in available cations. We propose a new mechanism that links tree species’ traits to soil cation availability via impacts on soil pH, a master biogeochemical driver. We tested ...


Summary: Insuring High Risks Fairly, Protecting Individuals Against Flood Losses, Howard Kunreuther 2019 University of Pennsylvania

Summary: Insuring High Risks Fairly, Protecting Individuals Against Flood Losses, Howard Kunreuther

Wharton PPI B-School for Public Policy Seminar Summaries

The National Flood Insurance Program (NFIP) encompasses issues of risk transparency and fairness. There is general agreement that floodplain residents need to know their risk-based insurance premium-and with that information, how to make their homes safer and thus make flood insurance more affordable. In this B-School Seminar, Professor Howard Kunreuther focused on the importance of accurate mapping of flood risk, how to encourage investment in cost effective mitigation measures, and ways to deal with fairness and affordability in designing a flood insurance program for the future.


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