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Full-Text Articles in Recreation, Parks and Tourism Administration

Climate Change And Environmental Crises In Coastal Cities: Charleston Vs New York City, Nolan Rodriguez May 2024

Climate Change And Environmental Crises In Coastal Cities: Charleston Vs New York City, Nolan Rodriguez

Student Theses 2015-Present

This paper addresses the increasing vulnerability that coastal communities face regarding climate crises and rising sea levels. Specifically, this paper investigates the environmental crises facing Charleston, South Carolina, and New York City. The geographical location of these cities places a more severe threat upon their environment, as opposed to urban collectives removed from the immediate effect of rising sea levels. A cross-examination of politics and economics is discussed in order to determine the causal relationship of each city’s engagement with its surrounding environment. This paper examines how each city is affected by climate change, what measures are in place to …


Biodiversidad De Plantas En La Reserva Natural Urbana Punta Popper En Río Grande: Una Propuesta Para Senderos Para La Gestión De La Conservación Y Métodos De Campo Replicables En Un Etorno Educativo, Lili Weir Apr 2023

Biodiversidad De Plantas En La Reserva Natural Urbana Punta Popper En Río Grande: Una Propuesta Para Senderos Para La Gestión De La Conservación Y Métodos De Campo Replicables En Un Etorno Educativo, Lili Weir

Independent Study Project (ISP) Collection

The Patagonian Steppe is an ecoregion that is rich in plant biodiversity (both native and introduced), and the Urban Nature Reserves like Punta Popper in Río Grande provide an opportunity to preserve these sensitive species and educate the public, especially students, about the value of this trophic level. However, many beautiful species are being affected by human activities in the Reserve: such as the mismanagement of the trail systems which has led to erosion of the sand dunes, and the pressures of rapid urban expansion contributing to trash pollution. It is essential that stakeholder communities have access to information and …


Policy Options For Forest-Disturbance-Adapted Species Management: Assessing The Rusty Blackbird In New York’S Adirondack Park, Louis W. Hallstrom, Stephen Bird Jan 2022

Policy Options For Forest-Disturbance-Adapted Species Management: Assessing The Rusty Blackbird In New York’S Adirondack Park, Louis W. Hallstrom, Stephen Bird

Adirondack Journal of Environmental Studies

Wilderness preservation policies can sometimes create protections that lack enough flexibility to address a variety of species needs. Rusty Blackbird populations in the United States have been declining for decades due to a multitude of stressors. Populations have declined by greater than 95% since 1966 according to the breeding bird surveys (Greenburg et al., 2011). The Wilderness and Wild Forest land use designations in the Adirondack Park, New York State, are intended to preserve forests and limit anthropogenic impact on the landscape within the Adirondacks to maintain its “forever wild” status under the New York Constitution. This designation can be …


Ecological Risk Assessment For The Temperate Demersal Elasmobranch Resource, Department Of Primary Industries And Regional Development, Western Australia Oct 2021

Ecological Risk Assessment For The Temperate Demersal Elasmobranch Resource, Department Of Primary Industries And Regional Development, Western Australia

Fisheries research reports

No abstract provided.


Squid And Cuttlefish Resources Of Western Australia, Daniel Yeoh, Danielle J. Johnston Phd, David C. Harris Sep 2021

Squid And Cuttlefish Resources Of Western Australia, Daniel Yeoh, Danielle J. Johnston Phd, David C. Harris

Fisheries research reports

No abstract provided.


Otoliths Of South-Western Australian Fish: A Photographic Catalogue, Chris Dowling, Kim Smith, Elain Lek, Joshua Brown Sep 2021

Otoliths Of South-Western Australian Fish: A Photographic Catalogue, Chris Dowling, Kim Smith, Elain Lek, Joshua Brown

Fisheries research reports

No abstract provided.


Evaluating Urban Parks Accessibility And Equity: A Case Study Of Hartford, Ct And New Haven, Ct, Natalie Roach, Mara Tu May 2021

Evaluating Urban Parks Accessibility And Equity: A Case Study Of Hartford, Ct And New Haven, Ct, Natalie Roach, Mara Tu

Honors Scholar Theses

Public parks provide cities with environmental benefits, positive health effects, recreational opportunities, community building, educational spaces, and public amenities. However, certain populations have been systematically denied their fair share of these benefits because of unjust practices in the creation and maintenance of urban parks. With a lens of environmental justice, the goal of this research was to assess park quality and accessibility of two Connecticut cities, Hartford and New Haven, by gathering publicly available information as well as using GIS tools.

The Trust for Public Land (TPL) has an existing ParkScore rating system that evaluates the quality of a city’s …


Asymmetric Benefits Of A Heterospecific Breeding Association Vary With Habitat, Conspecific Abundance And Breeding Stage, Rose J. Swift, Michael J. Anteau, Erin A. Roche, Mark H. Sherfy, Dustin L. Toy, Megan M. Ring Oct 2020

Asymmetric Benefits Of A Heterospecific Breeding Association Vary With Habitat, Conspecific Abundance And Breeding Stage, Rose J. Swift, Michael J. Anteau, Erin A. Roche, Mark H. Sherfy, Dustin L. Toy, Megan M. Ring

USGS Northern Prairie Wildlife Research Center

Heterospecific breeding associations may benefit individuals by mitigating predation risk but may also create costs if they increase competition for resources or are more easily detectable by predators. Our understanding of the interactions among hetero- and conspecifics is often lacking in mixed species colonies. Here, we test how the presence of hetero- and conspecifics influence nest and chick survival for two listed (under the U.S. Endangered Species Act) migratory species breeding on the Missouri River, USA. We monitored 2507 piping plover Charadrius melodus nests and 3245 chicks as well as 1060 least tern Sternula antillarum nests and 1374 chicks on …


Roosting Habitat Use By Sandhill Cranes And Waterfowl On The North And South Platte Rivers In Nebraska, Dana Varner, Aaron T. Pearse, Andy Bishop, Jonas I. Davis, John C. Denton, Roger C. Grosse, Heather M. Johnson, U.S. Fish And Wildlife Service, Soldotna, Ak, Kirk D. Schroeder, Robert E. Spangler, Mark Vrtiska, Angelina E. Wright Jun 2020

Roosting Habitat Use By Sandhill Cranes And Waterfowl On The North And South Platte Rivers In Nebraska, Dana Varner, Aaron T. Pearse, Andy Bishop, Jonas I. Davis, John C. Denton, Roger C. Grosse, Heather M. Johnson, U.S. Fish And Wildlife Service, Soldotna, Ak, Kirk D. Schroeder, Robert E. Spangler, Mark Vrtiska, Angelina E. Wright

USGS Northern Prairie Wildlife Research Center

Migration ecology and habitat use of spring migrating birds using the Central Platte River is a well-explored topic, yet less is known about use of the North and South Platte rivers (NSPR) in western Nebraska. The efficiency and effectiveness of conservation efforts in the NSPR could be greatly improved with access to information about where and when birds roost and landscape prioritization tools. We used aerial surveys to determine population distribution and migration phenology of sandhill cranes Antigone canadensis, Canada geese Branta canadensis, and ducks using the NSPR for roosting during the mid-February to mid-April spring migration. We used these …


Population And Harvest Dynamics Of Midcontinent Sandhill Cranes, Aaron T. Pearse, Glen A. Sargeant, Gary L. Krapu, David A. Brandt Jan 2020

Population And Harvest Dynamics Of Midcontinent Sandhill Cranes, Aaron T. Pearse, Glen A. Sargeant, Gary L. Krapu, David A. Brandt

USGS Northern Prairie Wildlife Research Center

Sandhill cranes (Antigone canadensis) inhabiting the midcontinent of North America have been hunted since the 1960s under management goals of maintaining abundance, retaining geographic distribution, and maximizing sustainable harvest. Some biologists have raised concerns regarding harvest sustainability because sandhill cranes have lower reproductive rates than other game birds. We summarized demographic information in an age‐structured matrix model to better understand population dynamics and harvest. Population indices and recovered harvest since the early 1980s suggest midcontinent sandhill cranes have experienced an average long‐term annual growth of 0.9%; meanwhile, harvest has increased 1.8% annually. Adult survival and recruitment rates estimated from field …


Temporospatial Shifts In Sandhill Crane Staging In The Central Platte River Valley In Response To Climatic Variation And Habitat Change, Andrew J. Caven, Emma M. Brinley Buckley, Kelsey C. King, Joshua Wiese, David M. Baasch, Greg D. Wright, Mary Harner, Aaron T. Pearse, Matt Raabe, Dana Varner, Brice Krohn, Nicole Arcilla, Kirk D. Schroeder, Kenneth F. Dinan Jan 2020

Temporospatial Shifts In Sandhill Crane Staging In The Central Platte River Valley In Response To Climatic Variation And Habitat Change, Andrew J. Caven, Emma M. Brinley Buckley, Kelsey C. King, Joshua Wiese, David M. Baasch, Greg D. Wright, Mary Harner, Aaron T. Pearse, Matt Raabe, Dana Varner, Brice Krohn, Nicole Arcilla, Kirk D. Schroeder, Kenneth F. Dinan

USGS Northern Prairie Wildlife Research Center

Over 80% of the Mid-Continent Sandhill Crane (Antigone canadensis) Population (MCP), estimated at over 660,000 individuals, stops in the Central Platte River Valley (CPRV) during spring migration from mid-February through mid-April. Research suggests that the MCP may be shifting its distribution spatially and temporally within the CPRV. From 2002 to 2017, we conducted weekly aerial surveys of Sandhill Cranes staging in the CPRV to examine temporal and spatial trends in their abundance and distribution. Then, we used winter temperature and drought severity measures from key wintering and early migratory stopover locations to assess the impacts of weather patterns …


Energy Development And Production In The Great Plains: Implications And Mitigation Opportunities, Jacqueline P. Ott, Bruce B. Hanberry, Mona Khalil, Mark W. Paschke, Max Post Van Der Burg, A.J. Prenni Jan 2020

Energy Development And Production In The Great Plains: Implications And Mitigation Opportunities, Jacqueline P. Ott, Bruce B. Hanberry, Mona Khalil, Mark W. Paschke, Max Post Van Der Burg, A.J. Prenni

USGS Northern Prairie Wildlife Research Center

Energy is an integral part of society. The major US energy sources of fossil fuels (coal, oil, natural gas); biofuels (ethanol); and wind are concentrated in grassland ecosystems of the Great Plains. As energy de- mand continues to increase, mounting pressures will be placed on North American grassland systems. In this review, we present the ecological effects of energy development and production on grassland sys- tems. We then identify opportunities to mitigate these effects during the planning, construction, and pro- duction phases by using informed methodology and improved technology. Primary effects during energy development include small- and large-scale soil disturbance …


Estimating Offsets For Avian Displacement Effects Of Anthropogenic Impacts, Jiill A. Shaffer, Charles R. Loesch, Deborah A. Buhl Jun 2019

Estimating Offsets For Avian Displacement Effects Of Anthropogenic Impacts, Jiill A. Shaffer, Charles R. Loesch, Deborah A. Buhl

USGS Northern Prairie Wildlife Research Center

Biodiversity offsetting, or compensatory mitigation, is increasingly being used in temperate grassland ecosystems to compensate for unavoidable environmental damage from anthropogenic developments such as transportation infrastructure, urbanization, and energy development. Pursuit of energy independence in the United States will expand domestic energy production. Concurrent with this increased growth is increased disruption to wildlife habitats, including avian displacement from suitable breeding habitat. Recent studies at energy-extraction and energy-generation facilities have provided evidence for behavioral avoidance and thus reduced use of habitat by breeding waterfowl and grassland birds in the vicinity of energy infrastructure. To quantify and compensate for this loss in …


Emerging Themes From The Esa Symposium Entitled “Pollinator Nutrition: Lessons From Bees At Individual To Landscape Levels”, Vanessa Corby-Harris, Julia H. Bowsher, Morgan Carr-Markell, Mark J. Carroll, Mary Centrella, Steven C. Cook, Margaret Couvillon, Gloria Degrandi-Hoffman, Adam Dolezal, Julia C. Jones, Christina L. Mogren, Clint R. V. Otto, Pierre Lau, Juliana Rangel, Roger Schürch, Ashley St. Clair Mar 2019

Emerging Themes From The Esa Symposium Entitled “Pollinator Nutrition: Lessons From Bees At Individual To Landscape Levels”, Vanessa Corby-Harris, Julia H. Bowsher, Morgan Carr-Markell, Mark J. Carroll, Mary Centrella, Steven C. Cook, Margaret Couvillon, Gloria Degrandi-Hoffman, Adam Dolezal, Julia C. Jones, Christina L. Mogren, Clint R. V. Otto, Pierre Lau, Juliana Rangel, Roger Schürch, Ashley St. Clair

USGS Northern Prairie Wildlife Research Center

Pollinator populations are declining (Biesmeijer et al., 2006; Brodschneider et al., 2018; Cameron et al., 2011; Goulson, Lye, & Darvill, 2008; Kulhanek et al., 2017; National Research Council, 2007; Oldroyd, 2007), and both anecdotal and experimental evidence suggest that limited access to high quality forage might play a role (Carvell, Meek, Pywell, Goulson, & Nowakowski, 2007; Deepa et al., 2017; Goulson, Nicholls, Botias, & Rotheray, 2015; Potts et al., 2003, 2010; Vanbergen & The Insect Pollinators Initiative, 2013; Vaudo, Tooker, Grozinger, & Patch, 2015; Woodard, 2017). Multiple researchers are earnestly addressing this topic in a diverse array of insect-pollinator systems. …


Effects Of Land Use On Greenhouse Gas Flux In Playa Wetlands And Associated Watersheds In The High Plains, Usa, Dale W. Daniel, Loren M. Smith, Scott T. Mcmurry, Brian A. Tangen, Charles F. Dahl, Ned H. Euliss Jr., Ted Lagrange Feb 2019

Effects Of Land Use On Greenhouse Gas Flux In Playa Wetlands And Associated Watersheds In The High Plains, Usa, Dale W. Daniel, Loren M. Smith, Scott T. Mcmurry, Brian A. Tangen, Charles F. Dahl, Ned H. Euliss Jr., Ted Lagrange

USGS Northern Prairie Wildlife Research Center

In the High Plains, U.S., native prairie conversion to cropland agriculture has resulted in a loss of service delivery capabilities from most depressional wet-lands as a result of sedimentation. Restoring historic hydrological conditions to affected wetlands may rejuvenate some services, however, there may be tradeoffs due to emissions of CH4 and N2O. We evaluated the influence of two predominant conservation programs (Wetlands Reserve Program, WRP and Conservation Reserve Program, CRP) on gas emissions (CO2, CH4, N2O) from 42 playas and uplands in the High Plains of Nebraska. Because playa restoration through the WRP is most prevalent in the Rainwater Basin …


Whooping Crane Use Of Riverine Stopover Sites, David M. Baasch, Patrick D. Farrell, Shay Howlin, Aaron T. Pearse, Jason M. Farnsworth, Chadwin B. Smith Jan 2019

Whooping Crane Use Of Riverine Stopover Sites, David M. Baasch, Patrick D. Farrell, Shay Howlin, Aaron T. Pearse, Jason M. Farnsworth, Chadwin B. Smith

USGS Northern Prairie Wildlife Research Center

Migratory birds like endangered whooping cranes (Grus americana) require suitable nocturnal roost sites during twice annual migrations. Whooping cranes primarily roost in shallow surface water wetlands, ponds, and rivers. All these features have been greatly impacted by human activities, which present threats to the continued recovery of the species. A portion of one such river, the central Platte River, has been identified as critical habitat for the survival of the endangered whooping crane. Management intervention is now underway to rehabilitate habitat form and function on the central Platte River to increase use and thereby contribute to the survival of whooping …


Modeling Effects Of Crop Production, Energy Development And Conservation-Grassland Loss On Avian Habitat, Jiill A. Shaffer, Cali L. Roth, David M. Mushet Jan 2019

Modeling Effects Of Crop Production, Energy Development And Conservation-Grassland Loss On Avian Habitat, Jiill A. Shaffer, Cali L. Roth, David M. Mushet

USGS Northern Prairie Wildlife Research Center

Birds are essential components of most ecosystems and provide many services valued by society. However, many populations have undergone striking declines as their habitats have been lost or degraded by human activities. Terrestrial grasslands are vital habitat for birds in the North American Prairie Pothole Region (PPR), but grassland conversion and fragmentation from agriculture and energy-production activities have destroyed or degraded millions of hectares. Conservation grasslands can provide alternate habitat. In the United States, the Conservation Reserve Program (CRP) is the largest program maintaining conservation grasslands on agricultural lands, but conservation grasslands in the PPR have declined by over 1 …


Revisiting The Historic Distribution And Habitats Of The Whooping Crane, Jane E. Austin, Matthew A. Hayes, Jeb A. Barzen Jan 2019

Revisiting The Historic Distribution And Habitats Of The Whooping Crane, Jane E. Austin, Matthew A. Hayes, Jeb A. Barzen

USGS Northern Prairie Wildlife Research Center

Understanding the historic range and habitats of an endangered species can assist in conservation and reintroduction efforts for that species. Individuals reintroduced into a species’ historic core range have a higher survival rate compared to individuals introduced near the periphery or outside the historic range (Falk and Olwell, 1992; Griffith et al., 1989). Individuals on the periphery of a species’ range tend to occupy less favorable habitats and have lower and more variable densities than those near the core of their range (Brown, 1984; Brown et al., 1995, 1996). Such conclusions, however, presume that historic habitats have not changed since …


U.S. Geological Survey- Northern Prairie Wildlife Research Center 2017 Research Activity Report, Mark H. Sherfy Jan 2019

U.S. Geological Survey- Northern Prairie Wildlife Research Center 2017 Research Activity Report, Mark H. Sherfy

USGS Northern Prairie Wildlife Research Center

Contents

Acknowledgments...............................................................................iii

Center Mission and Science Strategy...............................................................1

Lines of Work..................................................................................2

Study Narratives.................................................................................16


Diurnal Habitat Selection Of Migrating Whooping Crane In The Great Plains, David M. Baasch, Patrick D. Farrell, Aaron T. Pearse, David A. Brandt, Andrew J. Caven, Mary J. Harner, Greg D. Wright, Kristine L. Metzger Jan 2019

Diurnal Habitat Selection Of Migrating Whooping Crane In The Great Plains, David M. Baasch, Patrick D. Farrell, Aaron T. Pearse, David A. Brandt, Andrew J. Caven, Mary J. Harner, Greg D. Wright, Kristine L. Metzger

USGS Northern Prairie Wildlife Research Center

Available stopover habitats with quality foraging opportunities are essential for migrating waterbirds, including Whooping Crane (Grus americana). Several studies have evaluated habitats used by Whooping Crane for roosting throughout its migration corridor; however, habitats associated with foraging and other diurnal activities have received less attention. We used data collected from 42 Whooping Crane individuals that included 2169 diurnal use locations within 395 stopover sites evaluated during spring 2013 to fall 2015 to assess diurnal habitat selection throughout the U.S. portion of the migration corridor. We found that Whooping Crane selected wetland land-cover types (i.e., open water, riverine, and semipermanent wetlands) …


Mortality In Aransas-Wood Buffalo Whooping Cranes: Timing, Location, And Causes, Aaron T. Pearse, David A. Brandt, Barry K. Hartup, Mark T. Bidwell Jan 2019

Mortality In Aransas-Wood Buffalo Whooping Cranes: Timing, Location, And Causes, Aaron T. Pearse, David A. Brandt, Barry K. Hartup, Mark T. Bidwell

USGS Northern Prairie Wildlife Research Center

The Aransas-Wood Buffalo Population (AWBP) of Whooping Cranes (Grus americana) has experienced a population growth rate of approximately 4% for multiple decades (Butler et al., 2014a; Miller et al., 1974). Population growth for long-lived species of birds is generally highly sensitive to variation in adult mortality rates (Sæther and Bakke, 2000). A population model for endangered Red-crowned Cranes (Grus japonensis) in Japan conforms to this pattern, where growth rate is most sensitive to adult mortality (Masatomi et al., 2007). Earlier analyses observed that the AWBP growth rate increased in the mid-1950s and that this increase was likely caused by reduced …


Implications Of Spatially Variable Costs And Habitat Conversion Risk In Landscape-Scale Conservation Planning, Max Post Van Der Burg, Neil Chartier, Ryan Drum Dec 2018

Implications Of Spatially Variable Costs And Habitat Conversion Risk In Landscape-Scale Conservation Planning, Max Post Van Der Burg, Neil Chartier, Ryan Drum

USGS Northern Prairie Wildlife Research Center

‘‘Strategic habitat conservation’’ refers to a process used by the U.S. Fish and Wildlife Service to develop cost-efficient strategies for conserving wildlife populations and their habitats. Strategic habitat conservation focuses on resolving uncertainties surrounding habitat conservation to meet specific wildlife population objectives (i.e., targets) and developing tools to guide where conservation actions should be focused on the landscape. Although there are examples of using optimization models to highlight where conservation should be delivered, such methods often do not explicitly account for spatial variation in the costs of conservation actions. Furthermore, many planning approaches assume that habitat protection is a preferred …


Prairie Reconstruction Unpredictability And Complexity: What Is The Rate Of Reconstruction Failures?, Jack E. Norland, Cami Dixon, Diane Larson, Kristine Askerooth, Benjamin A. Geaumont Dec 2018

Prairie Reconstruction Unpredictability And Complexity: What Is The Rate Of Reconstruction Failures?, Jack E. Norland, Cami Dixon, Diane Larson, Kristine Askerooth, Benjamin A. Geaumont

USGS Northern Prairie Wildlife Research Center

The outcomes of prairie reconstructions are subject to both unpredictability and complexity. Prairie, tallgrass, and mixed grass reconstruction is defined as the planting of a native herbaceous seed mixture composed of multiple prairie species (10 or more) in an area where the land has been heavily cultivated or anthropogenically disturbed. Because of the unpredictability and complexity inherent in reconstructions, some outcomes end up being failures dominated by exotic species. We propose that these failures follow a fat-tailed distribution as found in other complex systems. Fat-tailed distributions follow the Pareto principle, where 80% of the time reconstructions work as expected but …


13 Terrestrial Wetlands, Randall Kolka, Carl T Trettin Nov 2018

13 Terrestrial Wetlands, Randall Kolka, Carl T Trettin

USGS Northern Prairie Wildlife Research Center

The objective of this chapter is to characterize the distribution of carbon stocks and fluxes in terrestrial wetlands within North America. The approach was to synthesize available literature from field measurements with analyses of resource inventory data to estimate wetland area, carbon stocks, and net ecosystem exchange (NEE) of carbon and methane (CH4) fluxes of terrestrial wetlands (see Appendices 13A, p. 547, and 13B, p. 557, for details1). Then, the findings employed from large-scale simulation studies provided additional context, with consideration given to the effects of disturbance regimes, restoration and creation of terrestrial wetlands, and the application of modeling tools …


Resource Assessment Report Temperate Demersal Elasmobranch Resource Of Western Australia, Matias Braccini, Nick Blay, S. A. Hesp, Brett Molony Nov 2018

Resource Assessment Report Temperate Demersal Elasmobranch Resource Of Western Australia, Matias Braccini, Nick Blay, S. A. Hesp, Brett Molony

Fisheries research reports

This document provides a cumulative description and assessment of the TDER and all of the fishing activities (i.e. fisheries / fishing sectors) affecting this resource in WA. Future Resource Assessment Reports will assess the Statewide Sharks and Rays Resource. The report is focused on the temperate indicator species (whiskery, gummy, dusky and sandbar sharks) used to assess the suites of demersal sharks and rays that comprise this resource. These species are primarily captured by demersal gillnets used in the TDGDLF that operate in the West Coast and South Coast Bioregions. For the North Coast bioregion, no commercial fishing for sharks …


Landscape Genetics Reveal Broad And Fine‐Scale Population Structure Due To Landscape Features And Climate History In The Northern Leopard Frog (Rana Pipiens) In North Dakota, Justin M. Waraniak, Justin D. L. Fisher, Kevin Purcell, David M. Mushet, Craig A. Stockwell Oct 2018

Landscape Genetics Reveal Broad And Fine‐Scale Population Structure Due To Landscape Features And Climate History In The Northern Leopard Frog (Rana Pipiens) In North Dakota, Justin M. Waraniak, Justin D. L. Fisher, Kevin Purcell, David M. Mushet, Craig A. Stockwell

USGS Northern Prairie Wildlife Research Center

Prehistoric climate and landscape features play large roles structuring wildlife populations. The amphibians of the northern Great Plains of North America present an opportunity to investigate how these factors affect colonization, migration, and current population genetic structure. This study used 11 microsatellite loci to genotype 1,230 northern leopard frogs (Rana pipiens) from 41 wetlands (30 samples/wetland) across North Dakota. Genetic structure of the sampled frogs was evaluated using Bayesian and multivariate clustering methods. All analyses produced concordant results, identifying a major east–west split between two R. pipiens population clusters separated by the Missouri River. Substructuring within the two major identified …


Landscape Genetics Reveal Broad And Fine‐Scale Population Structure Due To Landscape Features And Climate History In The Northern Leopard Frog (Rana Pipiens) In North Dakota, Justin M. Waraniak, Justin D.L. Fisher, Kevin Purcell, David M. Mushet, Craig A. Stockwell Oct 2018

Landscape Genetics Reveal Broad And Fine‐Scale Population Structure Due To Landscape Features And Climate History In The Northern Leopard Frog (Rana Pipiens) In North Dakota, Justin M. Waraniak, Justin D.L. Fisher, Kevin Purcell, David M. Mushet, Craig A. Stockwell

USGS Northern Prairie Wildlife Research Center

Prehistoric climate and landscape features play large roles structuring wildlife populations. The amphibians of the northern Great Plains of North America present an opportunity to investigate how these factors affect colonization, migration, and current population genetic structure. This study used 11 microsatellite loci to genotype 1,230 northern leopard frogs (Rana pipiens) from 41 wetlands (30 samples/wetland) across North Dakota. Genetic structure of the sampled frogs was evaluated using Bayesian and multivariate clustering methods. All analyses produced concordant results, identifying a major east–west split between two R. pipiens population clusters separated by the Missouri River. Substructuring within the two major identified …


Multi-Element Fingerprinting Of Waters To Evaluate Connectivity Among Depressional Wetlands, Yuxiang Yuan, Xiaoyan Zhu, David M. Mushet, Marinus L. Otte Oct 2018

Multi-Element Fingerprinting Of Waters To Evaluate Connectivity Among Depressional Wetlands, Yuxiang Yuan, Xiaoyan Zhu, David M. Mushet, Marinus L. Otte

USGS Northern Prairie Wildlife Research Center

Establishing the connectivity among depressional wetlands is important for their proper management, conservation and restoration. In this study, the concentrations of 38 elements in surface water and porewater of depressional wetlands were investigated to determine chemical and hydrological connectivity of three hydrological types: recharge, flow-through, and discharge, in the Prairie Pothole Region of North America. Most element concentrations of porewater varied significantly by wetland hydrologic type (p < 0.05), and increased along a recharge to discharge hydrologic gradient. Significant spatial variation of element concentrations in surface water was observed in discharge wetlands. Generally, higher element concentrations occurred in natural wetlands compared to wetlands with known disturbances (previous drainage and grazing). Electrical conductivity explained 42.3% and 30.5% of the variation of all element concentrations in porewater and surface water. Non-metric multidimensional scaling analysis showed that the similarity decreased from recharge to flowthrough to discharge wetland in each sampling site. Cluster analysis confirmed that element compositions in porewater of interconnected wetlands were more similar to each other than to those of wetlands located farther away. Porewater and surface water in a restored wetland showed similar multi-element characteristics to natural wetlands. In contrast, depressional wetlands connected by seeps along a deactivated drain-tile path and a grazed wetland showed distinctly different multi-element characteristics compared to other wetlands sampled. Our findings confirm that the multi-element fingerprinting method can be useful for assessing hydro-chemical connectivity across the landscape, and indicate that element concentrations are not only affected by land use, but also by hydrological characteristics.


The Usefulness Of Gps Telemetry To Study Wolf Circadian And Social Activity, Samuel B. Merrill, L. David Mech Jul 2018

The Usefulness Of Gps Telemetry To Study Wolf Circadian And Social Activity, Samuel B. Merrill, L. David Mech

USGS Northern Prairie Wildlife Research Center

This study describes circadian and social movement patterns of 9 wolves and illustrates capabilities and limitations of Global Positioning System (GPS) telemetry for analysis of animal activity patterns. Wolves were studied at the Camp Ripley National Guard Training Site in Little Falls, Minnesota, and were captured via helicopter net-gunning. All study wolves showed nocturnal movement patterns regardless of time of year. One wolf's movement pattern switched to diurnal when he conducted an extraterritorial foray from his natal territory. All data sets with GPS intervals <1 hour (n=4) showed crepuscular movement peaks. We identified patterns of den visitation and attendance, estimated minimum distances traveled and minimum rates of movement, and observed that GPS location intervals may affect perceived rates of wolf travel. Global Positioning System telemetry was useful in determining when pack members were traveling together or apart and how long a breeding female wolf spent near her pups (e.g., 0-month-old pups were left unattended by their mother for as long as 17 days).


Australian Herring And West Australian Salmon Scientific Workshop Report, October 2017, Department Of Primary Industries And Regional Development, Western Australia Jul 2018

Australian Herring And West Australian Salmon Scientific Workshop Report, October 2017, Department Of Primary Industries And Regional Development, Western Australia

Fisheries research reports

No abstract provided.