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Heterogeneity Of Avian Breeding Habitat On Grazing Lands Of The Northern Great Plains, Maggi S. Sliwinski 2017 University of Nebraska-Lincoln

Heterogeneity Of Avian Breeding Habitat On Grazing Lands Of The Northern Great Plains, Maggi S. Sliwinski

Dissertations & Theses in Natural Resources

Native rangelands in the Great Plains are largely privately owned and used for beef production. Vegetation heterogeneity is important for maintaining biodiversity, but private land may be more homogenous than desired. My research had two components: 1) to examine whether a variety of grazing strategies created vegetation heterogeneity in a large, intact rangeland, and 2) to understand beef producers’ attitudes about vegetation heterogeneity.

First, I sampled vegetation structure, composition, and bird abundance at multiple plots on eleven management units in Cherry County, Nebraska. Units were managed with commonly used grazing strategies (e.g., short-duration grazing and season-long continuous grazing). I ...


The North American Whistling-Ducks, Pochards, And Stifftails, Paul A. Johnsgard 2017 University of Nebraska - Lincoln

The North American Whistling-Ducks, Pochards, And Stifftails, Paul A. Johnsgard

Zea E-Books

Although the 12 species representing three waterfowl tribes described in this volume are not closely related, they fortuitously provide an instructive example of adaptive evolutionary radiation within the much larger waterfowl lineage (the family Anatidae), especially as to their divergent morphologies, life histories, and social behaviors.

The whistling-ducks (Dendrocygna), with three known North American species, are notable for their permanent pair-bonds, extended biparental family care, and strong social cohesion. In contrast, males of the five typical pochards of North American diving ducks (Aythya) establish monogamous pair-bonds that are maintained only long enough to assure that the female’s eggs are ...


Blue Sucker Summer Utilization Distributions And Inter-Annual Fidelity To Summering Habitats, J. David Adams, Casey L. Bergthold, Justin D. Haas, Mark A. Pegg, Gerald E. Mestl 2017 Nebraska Game and Parks Commission

Blue Sucker Summer Utilization Distributions And Inter-Annual Fidelity To Summering Habitats, J. David Adams, Casey L. Bergthold, Justin D. Haas, Mark A. Pegg, Gerald E. Mestl

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

Blue Sucker Cycleptus elongatus populations in the Missouri River are believed to be declining. The decline is most likely attributable to anthropogenic modifications including channelization and dam construction. We compared 2008 and 2009 summer use distribution (UD) for 21 blue suckers implanted with acoustic tags to better understand how blue suckers use the Missouri River. UDs are used to analyze space-use requirements based on the home range concept. The geometric mean 95% UD range was 1.9 river kilometers (RKM) in 2008 and 0.3 RKM in 2009, and differed statistically by year. The upper bound of the 2008 95 ...


Movement Patterns And Population Genetics Of The American Horseshoe Crab In Relation To Long Island Sound Conservation Strategies, Jo-Marie Kasinak, Kirk A. Bartholomew, Mark Beekey, Jennifer Mattei 2017 Sacred Heart University

Movement Patterns And Population Genetics Of The American Horseshoe Crab In Relation To Long Island Sound Conservation Strategies, Jo-Marie Kasinak, Kirk A. Bartholomew, Mark Beekey, Jennifer Mattei

Jo-Marie Kasinak

The Connecticut Department of Environmental Protection (CTDEP) established three no-harvest zones for the horseshoe crab (Limulus polyphemus) population as part of a conservation plan for the species. Data from a long-term mark/recapture study of horseshoe crabs in conjunction with a microsatellite-based genetic survey of the population were analyzed to determine if this plan was appropriate to conserve genetic diversity and broaden our knowledge of movement patterns of Limulus in Long Island Sound (LIS). To date, ~53,000 crabs have been tagged over a 10 year period through the Project Limulus program with an annual average recapture rate of 12 ...


Patterns Of Morphological And Molecular Evolution In The Antillean Tree Bat, Ardops Nichollsi (Chiroptera: Phyllostomidae), Roxanne J. Larsen, Peter A. Larsen, Caleb D. Phillips, Hugh H. Genoways, Gary G. Kwiecinski, Scott C. Pedersen, Carleton J. Phillips, Robert J. Baker 2017 Duke University

Patterns Of Morphological And Molecular Evolution In The Antillean Tree Bat, Ardops Nichollsi (Chiroptera: Phyllostomidae), Roxanne J. Larsen, Peter A. Larsen, Caleb D. Phillips, Hugh H. Genoways, Gary G. Kwiecinski, Scott C. Pedersen, Carleton J. Phillips, Robert J. Baker

Mammalogy Papers: University of Nebraska State Museum

Species endemic to oceanic islands offer unique insights into the mechanisms underlying evolution and have served as model systems for decades. Often these species show phenotypic variation that is correlated with the ecosystems in which they occur and such correlations may be a product of genetic drift, natural selection, and/or environmental factors. We explore the morphologic and genetic variation within Ardops nichollsi, a species of phyllostomid bat endemic to the Lesser Antillean islands. Ardops nichollsi is an ideal taxon to investigate the tempo of evolution in Chiroptera, as it: is a recently derived genus in the family Phyllostomidae; contains ...


Biology Department Plans Earth Day Event At Stratford Point, Jennifer H. Mattei, LaTina Steele, Jo-Marie Kasinak 2017 Sacred Heart University

Biology Department Plans Earth Day Event At Stratford Point, Jennifer H. Mattei, Latina Steele, Jo-Marie Kasinak

Jennifer Mattei

The Biology Department at Sacred Heart University is celebrating Earth Day celebrating Earth Day this year with a project at Stratford Point that will have volunteers planting saltmarsh grass to help restore the eroding shoreline. The event, spearheaded by Professors Jennifer Mattei, LaTina Steele, and Jo-Marie Kasinak, will take place Friday and Saturday, April 21-22 from 11 a.m. to 6 p.m.


Seagrassnet Monitoring In Great Bay, New Hampshire, 2015, Frederick T. Short 2017 Jackson Estuarine Laboratory

Seagrassnet Monitoring In Great Bay, New Hampshire, 2015, Frederick T. Short

PREP Publications

SeagrassNet is a global monitoring program begun in 2001 and designed to scientifically detect and document seagrass habitat change (Short et al. 2006a, 2014). Monitoring of eelgrass (Zostera marina L.) in the Great Bay Estuary using SeagrassNet was conducted in Portsmouth Harbor between 2001 and 2009 (Short et al. 2006b, Rivers and Short 2007), and in Great Bay starting in 2007 (Short 2009). Results from SeagrassNet 2015, supported by PREP and conducted in Great Bay, are described in this report.


Landscape Features That Predict The Occurrence Of Shorebirds In Agriculture Fields During Migration In The Rainwater Basin, Nebraska, Lindsay Ann Brown 2017 University of Nebraska at Omaha

Landscape Features That Predict The Occurrence Of Shorebirds In Agriculture Fields During Migration In The Rainwater Basin, Nebraska, Lindsay Ann Brown

Student Research and Creative Activity Fair

Some upland shorebird species are undergoing population declines. During their northward migration, these species primarily stop and use agricultural landscapes. This behavior is concerning because these landscapes are typically lower in resources, which could compromise energy demands during migration. There is a lack of information on what landscape features influence where species stop and on how the species use agricultural habitats. To close the gap, I compared landscape features between site where species-present and where were species-absent sites and developed models to predict migratory stopping sites. I focused on three uplands species: American Golden-Plovers, Buff-breasted Sandpipers, and Upland Sandpipers. Each ...


Enhancing The Citizen Scientist Experience Through Responsive Web Design, Sydney Lintner, Douglas Stahlnecker 2017 University of Nebraska at Omaha

Enhancing The Citizen Scientist Experience Through Responsive Web Design, Sydney Lintner, Douglas Stahlnecker

Student Research and Creative Activity Fair

Citizen science is currently employed in a variety of fields and has been enabling the collection of large swaths of data that would otherwise go uncollected. The Nebraska Watershed Network (NWN) utilizes citizen scientists to perform water tests, and currently, the results are written on postcards and then mailed to the NWN. We believe that using the proper technological tools will enhance the citizen scientist experience and the data collection process. We have developed a database and web application for the NWN that will allow citizen scientists to use their smartphones to enter their results immediately upon completing the tests ...


The North American Perching And Dabbling Ducks: Their Biology And Behavior, Paul Johnsgard 2017 University of Nebraska - Lincoln

The North American Perching And Dabbling Ducks: Their Biology And Behavior, Paul Johnsgard

Zea E-Books

This volume, the fourth in a series of books that collectively update and expand P. A. Johnsgard’s 1975 The Waterfowl of North America, summarizes research findings on this economically and ecologically important group of waterfowl. The volume includes the mostly tropical perching duck tribe Cairinini, of which two species, the muscovy duck and the wood duck, are representatives. Both species are adapted for foraging on the water surface, mostly on plant materials, but typically perch in trees and nest in elevated tree cavities or other elevated recesses. This volume also includes the dabbling, or surface-feeding, duck tribe Anatini, a ...


Beavers, Jimmy D. Taylor, Greg K. Yarrow, James E. Miller 2017 National Wildlife Research Center

Beavers, Jimmy D. Taylor, Greg K. Yarrow, James E. Miller

Wildlife Damage Management Technical Series

The American beaver (Castor canadensis) (Figure 1) is known as an “ecosystem engineer” because of the benefits their dams provide to biological diversity and ecosystem function. It also is considered a “keystone species” because of its ability to transform its environment, creating new habitats upon which other species depend. Despite the many positive benefits beavers provide through foraging and dam building, beavers also create conflict with people when their activities cause damage. The authors of this publication acknowledge and appreciate the many positive benefits that beavers provide; however, the focus of this publication is to provide basic information on beaver ...


Bioaccumulation Of Metallic Trace Elements And Antioxidant Enzyme Activities In Apfelbeckia Insculpta (L. Koch, 1867) (Diplopoda: Callipodida) From The Cave Hadži-Prodanova Pećina (Serbia), Jelena Vranković, Slavica Borković-Mitić, Bojan Ilić, Milanka Radulović, Slaviša Milošević, Slobodan Makarov, Bojan Mitić 2017 University of Belgrade

Bioaccumulation Of Metallic Trace Elements And Antioxidant Enzyme Activities In Apfelbeckia Insculpta (L. Koch, 1867) (Diplopoda: Callipodida) From The Cave Hadži-Prodanova Pećina (Serbia), Jelena Vranković, Slavica Borković-Mitić, Bojan Ilić, Milanka Radulović, Slaviša Milošević, Slobodan Makarov, Bojan Mitić

International Journal of Speleology

The concentration of 10 metallic trace elements or MTE (Cu, Fe, Zn, Mn, As, Hg, Pb, Cd, Ni, and Cr) was measured in specimens of the troglophilic millipede Apfelbeckia insculpta (L. Koch, 1867) and sediment of the cave Hadži-Prodanova Pećina in western Serbia. Some MTE, like Fe and Mn, displayed much higher concentrations compared to other elements, both in the sediment and in the body of A. insculpta. On the other hand, estimation of the bioaccumulation factor (BAF) in both males and females of A. insculpta showed values greater than 1 for xenobiotic elements compared to those that are essential ...


Monitoring Macroalgae In The Great Bay Estuary For 2015, David M. Burdick, Arthur C. Mathieson, Sydney Nick, Chris Peter 2017 Jackson Estuarine Laboratory

Monitoring Macroalgae In The Great Bay Estuary For 2015, David M. Burdick, Arthur C. Mathieson, Sydney Nick, Chris Peter

PREP Publications

In 2015, five of the eight locations with fixed intertidal transects were sampled as part of the long-term effort to monitor macroalgae in the Great Bay Estuary. With the completion of the third year of the project, all eight locations have been sampled at least once, two years of data have been collected for four locations, and three years of data have been collected for one location, Monitoring results from 2015 show high levels of cover of nuisance green or red algae (Ulva and Gracilaria, respectively) at all sites sampled. Nuisance algae is characterized as fast-growing; it can interfere with ...


Illinois & Indiana Eco-Sites & Dnr Programs In The Watershed, Bob Caveny 2017 Illinois Department of Natural Resources

Illinois & Indiana Eco-Sites & Dnr Programs In The Watershed, Bob Caveny

Kankakee River Watershed Conference

Author Keywords:

Invasives control, IDNR, Private lands, Watersheds


Sand Trends And Habitat Degradation, Jerrod Parker, Drew Costenbader, Yong Cao, John Epifanio 2017 Illinois Natural History Survey

Sand Trends And Habitat Degradation, Jerrod Parker, Drew Costenbader, Yong Cao, John Epifanio

Kankakee River Watershed Conference

Scholarship domains: Discovery, Teaching and Learning

Author keywords: Sand Movement, Fish Diversity, Kankakee River, Sportfish, Side-scan sonar


Habitat Selection By The Northern Long-Eared Myotis (Myotis Septentrionalis) In The Midwestern United States: Life In A Shredded Farmscape, Jeremy A. White, Patricia Freeman, Cliff A. Lemen 2017 University of Nebraska at Omaha

Habitat Selection By The Northern Long-Eared Myotis (Myotis Septentrionalis) In The Midwestern United States: Life In A Shredded Farmscape, Jeremy A. White, Patricia Freeman, Cliff A. Lemen

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

Populations of the Northern Long-Eared Myotis (Myotis septentrionalis) have declined dramatically in recent years in eastern North America due to white-nose syndrome. Although M. septentrionalis was once common in parts of eastern North America, few studies have examined habitat selection of this species in an agricultural landscape. We used acoustical methods to quantify bat activity and construct a habitat model of M. septentrionalis in an intensively farmed area in the Midwestern United States, where mortality from white-nose syndrome has not yet been observed. Our study confirms that M. septentrionalis prefers forest and avoids open habitats in this agricultural region. The ...


The Mixed Source Chinook Salmon Fishery In Lake Huron: A Comparison Of Spawning And Foraging Habitat Use By Naturalized And Hatchery Fish, Stephen A.C. Marklevitz 2017 The University of Western Ontario

The Mixed Source Chinook Salmon Fishery In Lake Huron: A Comparison Of Spawning And Foraging Habitat Use By Naturalized And Hatchery Fish, Stephen A.C. Marklevitz

Electronic Thesis and Dissertation Repository

Chinook salmon (Oncorhynchus tshawytscha) were introduced into the Great Lakes to restore top-down control of the food web and create new recreational fisheries. Soon after introduction, naturalized spawning populations became established, and with continued stocking of hatchery fish, created a mixed source fishery. My research provides new ecological information about the contributions of naturalized fish to the mixed source Chinook salmon fishery in Lake Huron. I examined spawning and foraging habitat use by naturalized and hatchery Chinook salmon using multiple methods to identify sources of individual fish (external tags, hatchery fin clips, and otolith microchemistry). In the Sydenham River, Ontario ...


Nitrogen Sustainability: Impediments To Action And Communication, Eric E. Jorgensen 2017 USEPA

Nitrogen Sustainability: Impediments To Action And Communication, Eric E. Jorgensen

Journal of Environmental Sustainability

“Sustainability” is widely used to imply the presence of explicit consideration of environmentally friendly needs and that high societal-value is placed on those needs. However, it is abundantly clear after 30 years that talking about sustainability and achieving it are two entirely different things. The core concept underlying sustainability is that current human practices and activities be conducted so as to not degrade prospects for future generations. With nitrogen, conflicts about sustainability in-theory and sustainability in-practice are close to the surface because of nitrogen’s central role in food production and economic activity. Measures of nitrogen inputs commonly range as ...


Symposium Volume 3, Issue 1, 2017 California Polytechnic State University, San Luis Obispo

Symposium Volume 3, Issue 1

Symposium

Collection of research projects conducted by students of the College of Science and Math at California Polytechnic State University


Phylogenomic Analysis Of Copepoda (Arthropoda, Crustacea) Reveals Unexpected Similarities With Earlier Proposed Morphological Phylogenies, Seong-il Eyun 2017 University of Nebraska - Lincoln

Phylogenomic Analysis Of Copepoda (Arthropoda, Crustacea) Reveals Unexpected Similarities With Earlier Proposed Morphological Phylogenies, Seong-Il Eyun

Papers from the Nebraska Center for Biotechnology

Background: Copepods play a critical role in marine ecosystems but have been poorly investigated in phylogenetic studies. Morphological evidence supports the monophyly of copepods, whereas interordinal relationships continue to be debated. In particular, the phylogenetic position of the order Harpacticoida is still ambiguous and inconsistent among studies. Until now, a small number of molecular studies have been done using only a limited number or even partial genes and thus there is so far no consensus at the order-level.

Results: This study attempted to resolve phylogenetic relationships among and within four major copepod orders including Harpacticoida and the phylogenetic position of ...


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