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Articles 901 - 930 of 1594

Full-Text Articles in Natural Resources and Conservation

A Novel Qtl Associated With Dwarf Bunt Resistance In Idaho 444 Winter Wheat, Jianli Chen, Mary J. Guttieri, Junli Zhang, David Hole, Edward Souza, Blair Goates Sep 2016

A Novel Qtl Associated With Dwarf Bunt Resistance In Idaho 444 Winter Wheat, Jianli Chen, Mary J. Guttieri, Junli Zhang, David Hole, Edward Souza, Blair Goates

Green Canyon Environmental Research Area, Logan Utah

Dwarf bunt [Tilletia controversa J.G. Kühn [as ‘contraversa’], in Rabenhorst, Hedwigia 13: 188 (1874)] is a destructive disease of wheat (Triticum aestivum L.) that reduces grain yield and quality. A number of distinct genes conferring resistance to dwarf bunt have been used by breeding programs for nearly 100 years. However, few markers were identified that can be used in selection of dwarf bunt resistance. A recombinant inbred line (RIL) population derived from the bunt-resistant germplasm, Idaho 444 (IDO444), and the susceptible cultivar, Rio Blanco, was evaluated for phenotypic reaction to dwarf bunt inoculation in four trials in …


Panarchy Use In Environmental Science For Risk And Resilience Planning, David G. Angeler, Craig R. Allen, Ahjond S. Garmestani, Lance H. Gunderson, Igor Linkov Aug 2016

Panarchy Use In Environmental Science For Risk And Resilience Planning, David G. Angeler, Craig R. Allen, Ahjond S. Garmestani, Lance H. Gunderson, Igor Linkov

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Environmental sciences have an important role in informing sustainable management of built environments by providing insights about the drivers and potentially negative impacts of global environmental change. Here, we discuss panarchy theory, a multi-scale hierarchical concept that accounts for the dynamism of complex socio-ecological systems, especially for those systems with strong cross-scale feedbacks. The idea of panarchy underlies much of system resilience, focusing on how systems respond to known and unknown threats. Panarchy theory can provide a framework for qualitative and quantitative research and application in the environmental sciences, which can in turn inform the ongoing efforts in sociotechnical resilience …


Bulletin No. 42: The Mamacoke Conservation Area, Glenn Dreyer, Robert Askins, Scott Peterson Aug 2016

Bulletin No. 42: The Mamacoke Conservation Area, Glenn Dreyer, Robert Askins, Scott Peterson

Bulletins

No abstract provided.


Slides: The Era Of River Anthropology: Social And Eco-Hydrological Science Connections And Capacity For Environmental Flows: Us Case Studies, Joseph E. Flotemersch, Lisa-Perras Gordon Jun 2016

Slides: The Era Of River Anthropology: Social And Eco-Hydrological Science Connections And Capacity For Environmental Flows: Us Case Studies, Joseph E. Flotemersch, Lisa-Perras Gordon

Coping with Water Scarcity in River Basins Worldwide: Lessons Learned from Shared Experiences (Martz Summer Conference, June 9-10)

Presenter: Joe Flotemersch, US Environmental Protection Agency (EPA), Office of Research and Development

21 slides


Slides: Environmental Flows In The Era Of 'River Anthropology', Rebecca Tharme Jun 2016

Slides: Environmental Flows In The Era Of 'River Anthropology', Rebecca Tharme

Coping with Water Scarcity in River Basins Worldwide: Lessons Learned from Shared Experiences (Martz Summer Conference, June 9-10)

Presenter: Rebecca Tharme, Riverfutures Ltd.

18 slides


Slides: The Colorado River Basin, Larry Macdonnell Jun 2016

Slides: The Colorado River Basin, Larry Macdonnell

Coping with Water Scarcity in River Basins Worldwide: Lessons Learned from Shared Experiences (Martz Summer Conference, June 9-10)

Presenter: Larry MacDonnell, Senior Fellow, Getches-Wilkinson Center, University of Colorado

17 slides


Slides: The Columbia River Basin, Barbara Cosens Jun 2016

Slides: The Columbia River Basin, Barbara Cosens

Coping with Water Scarcity in River Basins Worldwide: Lessons Learned from Shared Experiences (Martz Summer Conference, June 9-10)

Presenter: Barbara Cosens, Professor and Associate Dean of Faculty, University of Idaho College of Law, Waters of the West Interdisciplinary Program

16 slides


Slides: Environmental Flow Case Studies: Southern And Eastern Africa, Rebecca Tharme, Kelly Fouchy, Susan Graas, John Conallin, Michael Mcclain, Unesco-Ihe, Felister Mombo, Sokoine University Of Agriculture Jun 2016

Slides: Environmental Flow Case Studies: Southern And Eastern Africa, Rebecca Tharme, Kelly Fouchy, Susan Graas, John Conallin, Michael Mcclain, Unesco-Ihe, Felister Mombo, Sokoine University Of Agriculture

Coping with Water Scarcity in River Basins Worldwide: Lessons Learned from Shared Experiences (Martz Summer Conference, June 9-10)

Presenter: Rebecca Tharme, Riverfutures Ltd.

17 slides


Agenda: Coping With Water Scarcity In River Basins Worldwide: Lessons Learned From Shared Experiences, University Of Colorado Boulder. Getches-Wilkinson Center For Natural Resources, Energy, And The Environment Jun 2016

Agenda: Coping With Water Scarcity In River Basins Worldwide: Lessons Learned From Shared Experiences, University Of Colorado Boulder. Getches-Wilkinson Center For Natural Resources, Energy, And The Environment

Coping with Water Scarcity in River Basins Worldwide: Lessons Learned from Shared Experiences (Martz Summer Conference, June 9-10)

Water scarcity is increasingly dominating headlines throughout the world. In the southwestern USA, the looming water shortages on the Colorado River system and the unprecedented drought in California are garnering the greatest attention. Similar stories of scarcity and crisis can be found across the globe, suggesting an opportunity for sharing lessons and innovations. For example, the Colorado River and Australia's Murray-Darling Basin likely can share many lessons, as both systems were over-allocated, feature multiple jurisdictions, face similar climatic risks and drought stresses, and struggle to balance human demands with environmental needs. In this conference we cast our net broadly, exploring …


Slides: Rivers And People In The Neotropics: Social And Ecological Science For Environmental Flows, Elizabeth P. Anderson Jun 2016

Slides: Rivers And People In The Neotropics: Social And Ecological Science For Environmental Flows, Elizabeth P. Anderson

Coping with Water Scarcity in River Basins Worldwide: Lessons Learned from Shared Experiences (Martz Summer Conference, June 9-10)

Presenter: Elizabeth P. Anderson, Florida International University

38 slides


Slides: Food For Thought: Water Requirements For Social-Ecological Systems, Michael Douglas, Sue Jackson Jun 2016

Slides: Food For Thought: Water Requirements For Social-Ecological Systems, Michael Douglas, Sue Jackson

Coping with Water Scarcity in River Basins Worldwide: Lessons Learned from Shared Experiences (Martz Summer Conference, June 9-10)

Presenters:

Michael Douglas, University of Western Australia, Charles Darwin University

Sue Jackson, Griffith University

35 slides


Slides: Indigenous Water Justice In The Columbia River Basin, Barbara Cosens Jun 2016

Slides: Indigenous Water Justice In The Columbia River Basin, Barbara Cosens

Indigenous Water Justice Symposium (June 6)

Presenter: Barbara Cosens, Professor and Associate Dean of Faculty, University of Idaho College of Law, Waters of the West Interdisciplinary Program

17 slides


Agenda: Indigenous Water Justice Symposium, University Of Colorado Boulder. Getches-Wilkinson Center For Natural Resources, Energy, And The Environment Jun 2016

Agenda: Indigenous Water Justice Symposium, University Of Colorado Boulder. Getches-Wilkinson Center For Natural Resources, Energy, And The Environment

Indigenous Water Justice Symposium (June 6)

Indigenous peoples throughout the world face diverse and often formidable challenges of what might be termed “water justice.” On one hand, these challenges involve issues of distributional justice that concern Indigenous communities’ relative abilities to access and use water for self-determined purposes. On the other hand, issues of procedural justice are frequently associated with water allocation and management, encompassing fundamental matters like representation within governance entities and participation in decision-making processes. Yet another realm of water justice in which disputes are commonplace relates to the persistence of, and respect afforded to, Indigenous communities’ cultural traditions and values surrounding water—more specifically, …


Slides: Crystalised Not Frozen: Addressing Historical Exclusion Of Traditional Owners From Water, Poh-Ling Tan Jun 2016

Slides: Crystalised Not Frozen: Addressing Historical Exclusion Of Traditional Owners From Water, Poh-Ling Tan

Indigenous Water Justice Symposium (June 6)

Poh-Ling Tan, Griffith University

13 slides


Framework For Drafting Ecological Objectives For Water Sharing Plans - Submission Of The Nsw Aboriginal Land Council, Geoff Scott, New South Wales Aboriginal Land Council Jun 2016

Framework For Drafting Ecological Objectives For Water Sharing Plans - Submission Of The Nsw Aboriginal Land Council, Geoff Scott, New South Wales Aboriginal Land Council

Indigenous Water Justice Symposium (June 6)

Presenter: Phil Duncan, Gomeroi Nation, New South Wales Aboriginal Land Council

4 pages

Contains 1 footnote

Letter addressed to Nick Cook, A/Team Leader, WSP Science & Evaluation - North, NSW Office of Water, from Geoff Scott, Chief Executive Officer, New South Wales Aboriginal Land Council.


Ecosystem-Based Fisheries Management (Ebfm) Risk Assessment Of The Western Australian Silver-Lipped Pearl Oyster (Pinctada Maxima) Industry, K. L. Travaille, R. Jones, B Wise Jun 2016

Ecosystem-Based Fisheries Management (Ebfm) Risk Assessment Of The Western Australian Silver-Lipped Pearl Oyster (Pinctada Maxima) Industry, K. L. Travaille, R. Jones, B Wise

WA Marine Stewardship Council report series

This report provides a comprehensive overview of the Western Australian silver-lipped pearling (Pinctada maxima) industry and the outcomes from the 2015 ecological risk assessment of this industry. The P. maxima pearling industry has been operating in Western Australia since the 1880s, initially harvesting pearl oysters for mother-of-pearl production.


The Ecological Impacts Of Non-Native Species On River Otter Populations, Nadia Swit May 2016

The Ecological Impacts Of Non-Native Species On River Otter Populations, Nadia Swit

The Downtown Review: An Interdisciplinary Journal Written and Peer-Reviewed by Mandel Honors College Students at Cleveland State University

Most nonindigenous species invasions can have negative consequences on an environment. Trophic systems may become altered as prey sources are depleted, which can have further implications on community and habitat structure. However, some species invasions can be positive as it can provide another food source for key stone species. The effects of invasive species are reviewed in the following paper for the North American river otter (Lontra canadensis) and the Eurasian otter (Lutra lutra). In the case of the North American river, the introduction of the lake trout (Salvelinus namaycush) has negatively impacted otter …


Fluctuating Survival Selection Explains Variation In Avian Group Size, Charles R. Brown, Mary Bomberger Brown, Erin A. Roche, Valerie A. O'Brien, Catherine E. Page May 2016

Fluctuating Survival Selection Explains Variation In Avian Group Size, Charles R. Brown, Mary Bomberger Brown, Erin A. Roche, Valerie A. O'Brien, Catherine E. Page

School of Natural Resources: Faculty Publications

Most animal groups vary extensively in size. Because individuals in certain sizes of groups often have higher apparent fitness than those in other groups, why wide group size variation persists in most populations remains unexplained. We used a 30-y mark– recapture study of colonially breeding cliff swallows (Petrochelidon pyrrhonota) to show that the survival advantages of different colony sizes fluctuated among years. Colony size was under both stabilizing and directional selection in different years, and reversals in the sign of directional selection regularly occurred. Directional selection was predicted in part by drought conditions: birds in larger colonies tended …


Assessment Of American White Pelican Predation And Reproductive Success Of Walleye In The Tamarac River, Mn, Jake Graham May 2016

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 …


Western Australian Silver-Lipped Pearl Oyster (Pinctada Maxima) Industry, Anthony M. Hart, K. L. Travaille, R. Jones, S. J. Brand-Gardner, F J. Webster, A. Irving, A. V. Harry Apr 2016

Western Australian Silver-Lipped Pearl Oyster (Pinctada Maxima) Industry, Anthony M. Hart, K. L. Travaille, R. Jones, S. J. Brand-Gardner, F J. Webster, A. Irving, A. V. Harry

WA Marine Stewardship Council report series

This report provides a comprehensive description of the pearling (Pinctada maxima) industry in Western Australia. The pearling industry is comprised of the wild capture and cultivation of the silver-lipped pearl oyster Pinctada maxima in Western Australia’s northwest region.


Acoustic Detection Reveals Fine-Scale Distributions Of Myotis Lucifugus, Myotis Septentrionalis, And Perimyotis Subflavus In Eastern Nebraska, Jeremy A. White, Cliff Lemen, Patricia Freeman Apr 2016

Acoustic Detection Reveals Fine-Scale Distributions Of Myotis Lucifugus, Myotis Septentrionalis, And Perimyotis Subflavus In Eastern Nebraska, Jeremy A. White, Cliff Lemen, Patricia Freeman

School of Natural Resources: Faculty Publications

ABSTRACT.—Before white-nose syndrome arrives in Nebraska, it is important to document the preexposure distributions of cave bats in the state. We examined the distributions of Myotis lucifugus (little brown myotis), Myotis septentrionalis (northern long-eared myotis), and Perimyotis subflavus (tri-colored bat) in eastern Nebraska by setting acoustic detectors for a single night at 105 sites in wooded habitats during summers of 2012 and 2014. We compared 2 methods of determining presence at each site. Results of our analyses are fine-scale distributional maps for these bats and some range extensions from published records. Results for M. septentrionalis and P. subflavus are largely …


Swans: Their Biology And Natural History, Paul A. Johnsgard Feb 2016

Swans: Their Biology And Natural History, Paul A. Johnsgard

Zea E-Books Collection

The seven species of swans of the world are an easily and universally recognized group of waterfowl, which have historically played important roles in the folklore, myths and legends in many of the world’s cultures. Among the largest of all flying birds, they have also almost universally been used as symbols of royalty, grace and beauty, and largely for these reasons swans have only rarely been considered acceptable as targets for sport hunting. Swans occur on all the continents except Africa, although most species are associated with the temperate and arctic zones of North America and Eurasia. Among birds, swans …


Bats Serves As Nebraska's Natural Pest Control Agents, Michael Whitby, Craig R. Allen Feb 2016

Bats Serves As Nebraska's Natural Pest Control Agents, Michael Whitby, Craig R. Allen

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

You don't notice them flying in the night sky as you drive home, or in the trees above you as you walk your dog or under the bark of the dead tree at your fishing hole, but bats are everywhere in Nebraska. In fact, there are 13 species of bats inhabiting our state. They exhibit a wide variety of shapes, sizes and colors. Some migrate to unknown locations each winter. others stay in Nebraska and hibernate in caves, mines and occasionally homes. You probably won't notice them unless you happen to catch a glimpse of one eating insects under a …


Flight Initiation Distances Of Nesting Piping Plovers (Charadrius Melodus) In Response To Human Disturbance, Joel G. Jorgensen, Lauren R. Dinan, Mary Bomberger Brown Jan 2016

Flight Initiation Distances Of Nesting Piping Plovers (Charadrius Melodus) In Response To Human Disturbance, Joel G. Jorgensen, Lauren R. Dinan, Mary Bomberger Brown

School of Natural Resources: Faculty Publications

Birds frequently interact with people when they occur in coupled human-ecological or anthropogenic environments, which makes the protection of legally protected species a challenge. Flight initiation distances (FIDs) are often used to inform development of appropriate buffer distances required for human exclusion zones used to protect birds nesting in anthropogenic landscapes. Piping Plovers (Charadrius melodus) are protected by the Endangered Species Act in the United States and often nest in areas used by humans. Studies evaluating Piping Plover FIDs are limited and implementation of exclusion zones has been inconsistent across the species’ range. We measured Piping Plover response …


The Influence Of A Severe Reservoir Drawdown On Springtime Zooplankton And Larval Fish Assemblages In Red Willow Reservoir, Nebraska, Jason A. Deboer, Christa M. Webber, Taylor A. Dixon, Kevin L. Pope Jan 2016

The Influence Of A Severe Reservoir Drawdown On Springtime Zooplankton And Larval Fish Assemblages In Red Willow Reservoir, Nebraska, Jason A. Deboer, Christa M. Webber, Taylor A. Dixon, Kevin L. Pope

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Reservoirs can be dynamic systems, often prone to unpredictable and extreme waterlevel fluctuations, and can be environments where survival is difficult for zooplankton and larval fish. Although numerous studies have examined the effects of extreme reservoir drawdown on water quality, few have examined extreme drawdown on both abiotic and biotic characteristics. A fissure in the dam at Red Willow Reservoir in southwest Nebraska necessitated an extreme drawdown; the water level was lowered more than 6 m during a two-month period, reducing reservoir volume by 76%. During the subsequent low-water period (i.e., post-drawdown), spring sampling (April-June) showed dissolved oxygen concentration was …


Potential Population And Assemblage Influences Of Non-Native Trout On Native Nongame Fish In Nebraska Headwater Streams, Kelly C. Turek, Mark A. Pegg, Kevin L. Pope, Steve Schainost Jan 2016

Potential Population And Assemblage Influences Of Non-Native Trout On Native Nongame Fish In Nebraska Headwater Streams, Kelly C. Turek, Mark A. Pegg, Kevin L. Pope, Steve Schainost

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Non-native trout are currently stocked to support recreational fisheries in headwater streams throughout Nebraska. The influence of non-native trout introductions on native fish populations and their role in structuring fish assemblages in these systems is unknown. The objectives of this study were to determine (i) if the size structure or relative abundance of native fish differs in the presence and absence of non-native trout, (ii) if native fish-assemblage structure differs in the presence and absence of non-native trout and (iii) if native fish-assemblage structure differs across a gradient in abundances of non-native trout. Longnose dace Rhinichthys cataractae were larger in …


Letter Resisting Resilience Theory: Aresponse To Connelland Ghedini, Shana M. Sundstrom, Craig R. Allen, Lance H. Gunderson Jan 2016

Letter Resisting Resilience Theory: Aresponse To Connelland Ghedini, Shana M. Sundstrom, Craig R. Allen, Lance H. Gunderson

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

ConnellandGhedini [1] arguethatecolo- gistsareprimarily [1TD$DIF]concernedwithcommu- nitychangeandtendtoignoreprocesses liketrophiccompensationthatcontribute to communityorsystem-levelstability. Resilience,theyclaim,isthestudyof change,andresearchersshouldspend moretimestudyingstabilizingprocesses to betterpredictthetypesofchanges documentedbyecologistswhostudyresil- ience [2,3]. Thebulkoftheirpaper addressesresilienceandrelatedconcepts to contextualizeresistancetochange,but theirargumentsarediminishedbecause theauthorsfailtoexplicitlyplacetheirwork withintherangeofresilienceconceptsthat haveproliferatedacrossacademicdisci- plines.Moreimportantly,thepaperfurthers confusionregardingcoreecologicalresil- ienceconcepts.Withinthedisciplineof ecology,resilienceconceptshavebeen developedinafundamentallycohesive way [4]. Understandingtheresilienceof complexsystemsofhumansandnature duringthistimeofrapidglobalchangeis importantandthemisuseorcasualuseof conceptswithspecific meaningismore thansimplyatrivialpointofcontention;it potentiallyobscuresprocessesandprop- ertiesthathavedirectrelevancetohuman- ity'sinteractionwiththeenvironment.


Influence Of Anglers’ Specializations On Catch, Harvest, And Bycatch Of Targeted Taxa, Kevin L. Pope, Christopher J. Chizinski, Christopher L. Wiley, Dustin R. Martin Jan 2016

Influence Of Anglers’ Specializations On Catch, Harvest, And Bycatch Of Targeted Taxa, Kevin L. Pope, Christopher J. Chizinski, Christopher L. Wiley, Dustin R. Martin

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Fishery managers often use catch per unit effort (CPUE) of a given taxon derived from a group of anglers,those that sought said taxon, to evaluate fishery objectives because managers assume CPUE for this group of anglers is most sensitive to changes in fish taxon density. Further, likelihood of harvest may differ for sought and non-sought taxa if taxon sought is a defining characteristic of anglers’ attitude toward harvest.We predicted that taxon-specific catch across parties and reservoirs would be influenced by targeted taxon after controlling for number of anglers in a party and time spent fishing (combine to quantify fishing effort …


Current Status Of Falcon Populations In Saudi Arabia, Albara M. Binothman Jan 2016

Current Status Of Falcon Populations In Saudi Arabia, Albara M. Binothman

Electronic Theses and Dissertations

Falcons (Falco spp.) are widely used for falconry in the countries of the Middle East. During the 2015 breeding season, we surveyed historic and active nest sites of Barbary (Falco pelegrinoides pelegrinoides) and Lanner (F. biarmicus) Falcons in Saudi Arabia. Field and questionnaire surveys were conducted and personal contact with falconers was made to document the current distribution and price changes for Lanner Falcons, Barbary Falcons, Saker Falcons (F. cherrug), Peregrine Falcons (F. peregrinus), Gyrfalcons (F. rusticolus), and Hybrid Falcons in Saudi Arabia. We categorized our survey into three geographic groups; southwest (A), northwest (B), and central (C) regions of …


Adaptive Management For Soil Ecosystem Services, Hannah E. Birge, Rebecca A. Bevans, Craig R. Allen, David G. Angeler, Sara G. Baer, Diana H. Wall Colorado State University Jan 2016

Adaptive Management For Soil Ecosystem Services, Hannah E. Birge, Rebecca A. Bevans, Craig R. Allen, David G. Angeler, Sara G. Baer, Diana H. Wall Colorado State University

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

No abstract provided.