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Articles 811 - 840 of 3488

Full-Text Articles in Ecology and Evolutionary Biology

A New Species Of Vaejovis From The Mule Mountains Above Bisbee, Arizona (Scorpiones: Vaejovidae), Brandon T. Myers, Richard F. Ayrey Dec 2021

A New Species Of Vaejovis From The Mule Mountains Above Bisbee, Arizona (Scorpiones: Vaejovidae), Brandon T. Myers, Richard F. Ayrey

Euscorpius

No abstract provided.


American Burying Beetle, Plant Richness, And Soil Property Responses To Collapse Of Juniperus Virginiana Woodlands With Fire, Alison K. Ludwig Dec 2021

American Burying Beetle, Plant Richness, And Soil Property Responses To Collapse Of Juniperus Virginiana Woodlands With Fire, Alison K. Ludwig

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

Grasslands are declining in the Great Plains due to land use changes, woody plant encroachment, and loss of historic fire cycles. Prescribed burn associations have utilized prescribed fire to collapse invading woodlands and allow the restoration of grasslands. This fire is considered “extreme” because it is capable of changing the structure and function of an ecosystem. Our study site is the Loess Canyons Experimental Landscape, a long-term, ecoregion-scale experiment to apply prescribed fire across the region to restore grasslands. The Nebraska Natural Legacy Project established the Loess Canyons ecoregion as a Biologically-Unique Landscape in 2005 with the state’s wildlife action …


Northern Bobwhite Occupancy Patterns On Multiple Spatial Scales Across Arkansas, Ellery V. Lassiter, Marcus Asher, Grace Christie, Connor Gale, Andrhea Massey, Cody Massery, Christopher R. Middaugh, John T. Veon, Brett A. Degregorio Dec 2021

Northern Bobwhite Occupancy Patterns On Multiple Spatial Scales Across Arkansas, Ellery V. Lassiter, Marcus Asher, Grace Christie, Connor Gale, Andrhea Massey, Cody Massery, Christopher R. Middaugh, John T. Veon, Brett A. Degregorio

Biological Sciences Faculty Publications and Presentations

Northern bobwhite Colinus virginianus populations have been rapidly declining in the eastern, central, and southern United States for decades. Land use change and an incompatibility between northern bobwhite resource needs and human land use practices have driven declines. Here, we applied occupancy analyses on two spatial scales (state level and ecoregion level) to more than 5,000 northern bobwhite surveys conducted over 6 y across the entire state of Arkansas to explore patterns in occupancy and land use variables, and to identify priority areas for management and conservation. At the state level, northern bobwhite occupied 29% of sites and northern bobwhite …


Amphibians And Reptiles As Prey Of Heteroctenus Junceus (Scorpiones: Buthidae), With A Summary Of Vertebrate Predation By Scorpions In The West Indies, Tomás M. Rodríguez-Cabrera,, Ernesto Morell Savall, Rolando Teruel Nov 2021

Amphibians And Reptiles As Prey Of Heteroctenus Junceus (Scorpiones: Buthidae), With A Summary Of Vertebrate Predation By Scorpions In The West Indies, Tomás M. Rodríguez-Cabrera,, Ernesto Morell Savall, Rolando Teruel

Euscorpius

Vertebrate predation by scorpions has been scarcely documented in the literature. Contrary to large scorpions of the genera Centruroides, Hadrurus, Opistophthalmus, and Pandinurus from North America and Africa, which are capable of subduing even small rodents and bats, West Indian scorpions of the genera Centruroides, Heteroctenus, and Tityus seem to limit their prey to amphibians and reptiles. Herein we present new cases of a frog (Osteopilus septentrionalis; Hylidae) and three lizards (Anolis allisoni, A. ophiolepis, and A. sagrei; Dactyloidae) preyed upon by Heteroctenus junceus (Herbst, 1800), at the time we summarize all cases of vertebrate …


Phylogenomics Of Alligator Lizards Elucidate Diversification Patterns Across The Mexican Transition Zone And Support The Recognition Of A New Genus, Christopher Blair, Robert W. Bryson Jr, Uri O. García-Vázquez, Adrián Nieto-Montes De Oca, David Lazcano, John E. Mccormack, John Klicka Nov 2021

Phylogenomics Of Alligator Lizards Elucidate Diversification Patterns Across The Mexican Transition Zone And Support The Recognition Of A New Genus, Christopher Blair, Robert W. Bryson Jr, Uri O. García-Vázquez, Adrián Nieto-Montes De Oca, David Lazcano, John E. Mccormack, John Klicka

Publications and Research

Genomic data continue to advance our understanding of species limits and biogeographic patterns. However, there is still no consensus regarding appropriate methods of phylogenomic analysis that make the best use of these heterogeneous data sets. In this study, we used thousands of ultraconserved element (UCE) loci from alligator lizards in the genus Gerrhonotus to compare and contrast species trees inferred using multiple contemporary methods and provide a time frame for biological diversification across the Mexican Transition Zone (MTZ). Concatenated maximum likelihood (ML) and Bayesian analyses provided highly congruent results, with differences limited to poorly supported nodes. Similar topologies were inferred …


The Danov Archive, Victor Fet, Alexander Kogan Nov 2021

The Danov Archive, Victor Fet, Alexander Kogan

Open Access Books

This memorial volume compiles materials about Rostislav Dаnov (1941—1993) of St. Petersburg (Russia), a naturalist, artist, and snake-hunter, who worked for many years in Turkmenistan (West Kopetgagh Mts). The book celebrates Dаnov’s 80th birthday. It includes previously unpublished artwork and scientific illustrations by Dаnov as well as his texts, research papers, various memoirs, biographic information, and unique photographs. The book is intended for everyone who is interested in history of science and conservation in Central Asia and the USSR.

Фет В, Коган А, составители. Дановcкий архив. Библиотека Университета Маршалла, Хантингтон, Западная Виргиния, 2021. 494 с. Этот том содержит материалы о …


Androctonus Turkiyensis Sp. N. From The Şanlıurfa Province, Turkey (Scorpiones: Buthidae), Ersen A. Yağmur Nov 2021

Androctonus Turkiyensis Sp. N. From The Şanlıurfa Province, Turkey (Scorpiones: Buthidae), Ersen A. Yağmur

Euscorpius

A new species Androctonus turkiyensis sp. n. is described and illustrated from the Şanlıurfa Province of Turkey. The new species is compared with A. crassicauda (Olivier, 1807), which was previously misidentified from Turkey. A. crassicauda specimens used for comparison were collected from Kashan County (Iran), the type locality of this species; a neotype from Kashan is designated.


The First Troglobitic Scorpions From Hispaniola, Greater Antilles: Two New Species Of Cazierius Francke, 1978 (Scorpiones: Diplocentridae), Rolando Teruel, Solanlly Carrero Jiménez, Gabriel De Los Santos Nov 2021

The First Troglobitic Scorpions From Hispaniola, Greater Antilles: Two New Species Of Cazierius Francke, 1978 (Scorpiones: Diplocentridae), Rolando Teruel, Solanlly Carrero Jiménez, Gabriel De Los Santos

Euscorpius

Two new species of the Greater Antillean endemic scorpion genus Cazierius Francke, 1978, are herein described from the island of Hispaniola. They were found inside isolate limestone caves in the Dominican Republic and are fully troglomorphic, thus, apparently being strict troglobites that represent the first ever documented for this genus. The present additions raise the number of Hispaniolan species of both Cazierius and the family Diplocentridae Karsch, 1880, to five and ten, respectively.


The Correct Identity Of Centruroides Hoffmanni Armas, 1996 (Scorpiones: Buthidae), With The Description Of A New Species From Chiapas, Mexico, Luis De Armas, Rolando Teruel Nov 2021

The Correct Identity Of Centruroides Hoffmanni Armas, 1996 (Scorpiones: Buthidae), With The Description Of A New Species From Chiapas, Mexico, Luis De Armas, Rolando Teruel

Euscorpius

The Mexican scorpion Centruroides hoffmanni Armas, 1996 was described on the basis of a supposed adult female (actually a juvenile) from La Gloria, Arriaga Municipality, southwest of the Chiapas State. In its redescription, this species was also recorded from the southeastern of Oaxaca State. Nevertheless, in the recent revision of the “thorellii” species-group of the genus Centruroides Marx, 1890, a new species from Chiapas was misidentified as C. hoffmanni and, also, an erroneous new diagnosis was given for C. hoffmanni. In the present contribution, this new species is named Centruroides concordia sp. n., and the correct identity of C. …


Genetic Structuring And Community Assembly In Neotropical Birds, Oscar Johnson Nov 2021

Genetic Structuring And Community Assembly In Neotropical Birds, Oscar Johnson

LSU Doctoral Dissertations

The factors that influence how species form is of fundamental interest to biology. Under the framework of the speciation cycle, the process begins by population subdivision creating structured populations that then diverge until two new species form. Following speciation, however, continued divergence is necessary for these new species to be able to coexist without adverse interactions, known as the transition to secondary sympatry. At this point the speciation cycle is complete and the process can begin anew. Many of the factors influencing these processes remain poorly understood. Here, I explore the factors that influence speciation and community assembly in Neotropical …


Center For Grassland Studies, November 2021 Nov 2021

Center For Grassland Studies, November 2021

Center for Grassland Studies: Newsletters

Contents

Ranchers’ Preferences for Payment for Ecosystem Services Programs in Nebraska by Kyle Martens

Center for Grassland Studies Policy Advisory Committee

Director's Column by Walt Schacht (Interim Director)

Fall Army Worms Reared Their Ugly Heads and Wings in Nebraska in 2021by Roch Gaussoin

Dalbey-Halleck Open House by Margo McKendree

Internships – Let’s Get More Students on the Land! by Shelly Kelly

Jim Gerrish Insightful and Relatable for Grazing Livestock (GLS) Club Members


Inventory And Distribution Of Mosquitoes (Diptera, Culicidae) In The Aures Region (Batna, Algeria), Nora Belkhiri, Wafa Habbachi, Saliha Benhissen, Naama Frah, Abdelmadjid Yagoub Asloum, Nadia Aberkane Oct 2021

Inventory And Distribution Of Mosquitoes (Diptera, Culicidae) In The Aures Region (Batna, Algeria), Nora Belkhiri, Wafa Habbachi, Saliha Benhissen, Naama Frah, Abdelmadjid Yagoub Asloum, Nadia Aberkane

Journal of Bioresource Management

Mosquitoes are the most terrifying both for their abundance and for the diseases they transmit. They are vectors of malaria, lymphatic filariasis and arbovirus such as yellow fever, dengue, viral encephalitis and African horse sickness. These characteristics give this fauna prominent importance and health interest. To identify the most widespread mosquito species, we conducted for the first time an inventory in the Aures region more particularly the wilaya of Batna (East of Algeria) from May 2017 to January 2020, we studied their diversity, abundance and distribution. The sampling is done by monthly surveys of the various localities chosen, using the …


Fisheries Science Update – October 2021: West Coast Demersal Scalefish Resource, Department Of Primary Industries And Regional Development, Western Australia Oct 2021

Fisheries Science Update – October 2021: West Coast Demersal Scalefish Resource, Department Of Primary Industries And Regional Development, Western Australia

Fisheries Occasional Publications

Key points: 2021 stock assessment outcomes • The West Coast Demersal Scalefish Resource (WCDSR) is halfway into a 20-year recovery plan following a period of overfishing in the 1990s and 2000s. • This latest assessment provides an important “health check” on the recovery status. • The recovery plan is based on maintaining recreational (including charter) and commercial sector’s total fishing mortality below catch limits and protecting key spawning aggregations to recover the WCDSR by 2030. • The Department of Primary Industries and Regional Development (DPIRD) tracks recovery progress by undertaking weight of evidence stock assessments of WCDSR indicator species dhufish …


Free-Ranging And Feral Cats, Alex Dutcher, Kyle Pias, Grant Sizemore, Stephen M. Vantassel Oct 2021

Free-Ranging And Feral Cats, Alex Dutcher, Kyle Pias, Grant Sizemore, Stephen M. Vantassel

Wildlife Damage Management Technical Series

Domestic cats (Felis catus) are a common household pet in the United States, with an estimated 25.4% of households owning cats (American Veterinary Medical Association 2018). While an increasing number of cat owners keep their pet cats exclusively indoors, a portion of society maintains that domestic cats are entitled to a free-ranging lifestyle and may even consider unowned domestic cats to be wildlife. Although wildlife managers recognize the beliefs of many concerned stakeholders, including advocates who use strong emotional appeals on behalf of cats, it remains that free-ranging and feral domestic cats are an invasive species spread by humans (Lowe …


Remote Detection Of Disturbance From Motorized Vehicle Use In Appalachian Wetlands, Walter Smith Oct 2021

Remote Detection Of Disturbance From Motorized Vehicle Use In Appalachian Wetlands, Walter Smith

Virginia Journal of Science

Wetland disturbance from motorized vehicle use is a growing concern across the Appalachian coalfields of southwestern Virginia and portions of adjacent states, particularly as both extractive industries and outdoor recreation development expand in regional communities. However, few attempts have been made in this region or elsewhere to adapt approaches that can assist researchers and land managers in remotely identifying and monitoring wetland habitats disturbed by motorized vehicle use. A comparative analysis of wetlands impacted and unimpacted by off-road vehicle activity at a public recreation area in Tazewell County, Virginia was conducted to determine if and how a common, satellite-derived index …


A Ladder Of Endemicity: A Pioneering Study Of Anuran Communities Along An Elevational Gradient In The Eastern Andean Cloud Forests, Ecuador, Ella Halbert Oct 2021

A Ladder Of Endemicity: A Pioneering Study Of Anuran Communities Along An Elevational Gradient In The Eastern Andean Cloud Forests, Ecuador, Ella Halbert

Independent Study Project (ISP) Collection

Per unit of area, Ecuador is home to the most herpetofauna of any region on Earth, yet many ecosystems are under researched. Positioned between the Eastern Andes and the Amazon rainforest, the Río Pastaza Basin of Ecuador has been the recent focus of anuran biodiversity surveys and is home to many endemic species. This study aimed to determine how the anuran community composition of a vertical transect in the Llanganates National Park varied between elevations. A 7-day expedition was conducted along a new trail up Abitagua Range spanning 1,050 m in elevation. Each night, visual encounter surveys were employed to …


A New Species Of Pseudouroctonus From The Pinaleño Mountains, Southern Arizona (Scorpiones: Vaejovidae), Richard F. Ayrey, František Kovařík, Brandon T. Myers Sep 2021

A New Species Of Pseudouroctonus From The Pinaleño Mountains, Southern Arizona (Scorpiones: Vaejovidae), Richard F. Ayrey, František Kovařík, Brandon T. Myers

Euscorpius

A new scorpion species, Pseudouroctonus moyeri sp. n. (Scorpiones: Vaejovidae) is described. This large, dark, reddish brown species is found in the Pinaleño Mountains, Arizona. This is the largest species of Pseudouroctonus found in Arizona. Ruberhieronymus Rossi, 2018 is synonymized with Pseudouroctonus Stahnke, 1974


Four New Lithophilic Species Of Scorpiops Peters, 1861 (Scorpiones: Scorpiopidae) From Peninsular India, Shauri Sulakhe, Shubhankar Deshpande, Nikhil Dandekar, Anand Padhye, Deshabhushan Bastawade Sep 2021

Four New Lithophilic Species Of Scorpiops Peters, 1861 (Scorpiones: Scorpiopidae) From Peninsular India, Shauri Sulakhe, Shubhankar Deshpande, Nikhil Dandekar, Anand Padhye, Deshabhushan Bastawade

Euscorpius

Four new lithophilic species of Scorpiops Peters, 1861 (Scorpiopidae) have been described from peninsular India using an integrated taxonomic approach. Three species Scorpiops vrushchik sp. n., S. nagphani sp. n. and S. neera sp. n. have been described from northern Western Ghats and S. lioneli sp. n. is described from Deccan Plateau. S. vrushchik sp. n. is closely related to S. tenuicauda and S. telbaila and differs by a raw genetic divergence of 9.6-9.8% from S. tenuicauda and 11% from S. telbaila. S. nagphani sp. n. is closely related to S. lioneli sp. n. and S. maharashtraensis and differs by …


Center For Grassland Studies, September 2021 Sep 2021

Center For Grassland Studies, September 2021

Center for Grassland Studies: Newsletters

Contents

Nebraska Grazing Conference Recap by Daren Redfearn

Center for Grassland Studies Policy Advisory Committee

Director's Column by Walt Schacht (Interim Director)

Land Use and Property Taxes by Jordan Johnson

Congratulations August 2021 Graduates

Wildfires are Changing the Future of Nebraska’s Woodland-Grassland Complexes by Amanda Hefner

PGA WORKS Scholarship Recipients Announced by PGA Reach

Grazing Livestock Systems Internships Provide Diverse Experience by Bryan Reiling

Jim Choquette Receives Lifetime Achievement Award


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

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

Fisheries Research Reports

Due to the species-specific nature of otoliths and given they are often the only part of the fish preserved when fish die, otolith catalogues can be used in numerous applications, such as diet studies in fish eating animals, including pinnipeds, fish and sea birds; archaeological purposes such as reconstructing indigenous people’s diets from otoliths found in middens or evolutionary history of fish species by comparing fossilized otoliths. Given the unique mixture of subtropical and temperate fish, including many endemic species that occur off the southwest corner of WA having a catalogue for this area is extremely important for people working …


Vertebrate Scavenger Diversity And Ecosystem Services Along An Elevational Gradient In Central Nepal, Aishwarya Bhattacharjee Sep 2021

Vertebrate Scavenger Diversity And Ecosystem Services Along An Elevational Gradient In Central Nepal, Aishwarya Bhattacharjee

Dissertations, Theses, and Capstone Projects

A growing number of studies recognize the ecological significance of vertebrate scavengers, and several species belonging to this diverse, functional guild are of high conservation importance around the globe. Studies on taxonomic and functional components of biodiversity often use elevation gradients to comprehensively examine patterns and drivers across multiple spatial scales. Yet, there are relatively few elevational studies on large vertebrates or multi-taxa guilds, and the related variation of their ecosystem services. In particular, scavenger research has largely focused on local-scale studies or regional/global comparisons of local-scale investigations. Moreover, these studies primarily consider taxonomic community characteristics and the patterns of …


Eradicating Zebra Mussels: What Works?, Elijah Davies Aug 2021

Eradicating Zebra Mussels: What Works?, Elijah Davies

Symposium of Student Scholars

The invasion of U.S lakes and rivers by the invasive species of zebra mussels called Dreissena polymorpha has caused catastrophic harm to the local ecosystem by reproducing and outcompeting native mussel species as well as harm to pipes leading into water sources by binding to surfaces and reproducing to the point that the mussels clog pipes. In addition, recreation areas must be closed due to the sharp shells making areas unusable. In the past, research has focused on individual molluscicides and their eradication of zebra mussels, as well as their effect on native flora and fauna. My research will contrast …


Initial Assessment Of Potential Relationships Between Plant Communities And The Soil Microbiome In Closed Forest And Longleaf Pine Restoration Sites., Sean Davis, Ian Kennedy Aug 2021

Initial Assessment Of Potential Relationships Between Plant Communities And The Soil Microbiome In Closed Forest And Longleaf Pine Restoration Sites., Sean Davis, Ian Kennedy

Symposium of Student Scholars

Longleaf pine is an endangered ecosystem characterized by high levels of biodiversity.

Our study took place in the Sheffield Wildlife Management Area located in the Piedmont ecoregion of Georgia in Paulding County. Fifty plots of 10 x 30 m2 were setup on south or north facing slopes, some in covered forest, and some in an area actively being restored for the longleaf pine. All trees above 1.37 m were identified and had their diameter measured, and species diversity, relative density, dominance, and frequency were determined. Herbaceous plant cover percentages were recorded in select plots. Soil samples were also collected …


Towards The Identification Of The Soil Fungal Microbiome Community Associated With Longleaf Pine, Joshua Inneh, Grace Krueger, Ian Thomasson, Fletcher Moon, Geoffrey Eger Aug 2021

Towards The Identification Of The Soil Fungal Microbiome Community Associated With Longleaf Pine, Joshua Inneh, Grace Krueger, Ian Thomasson, Fletcher Moon, Geoffrey Eger

Symposium of Student Scholars

This project is part of a larger study looking at the restoration of the Longleaf Pine (LLP) ecosystem in certain Wildlife Management Areas (WMA) in Northwest Georgia. Our long-term aim is to look for potential associations between the aboveground and belowground community structures as the complex system of feedback mechanisms between the soil microbiome, the rhizosphere, and the plant communities is not yet understood.

Soil samples were collected from a total of six plots in the Sheffield WMA located in Paulding County. The samples were collected from north or south facing hillside plots except for in the savanna sites (an …


A Reevaluation Of The Phylogeography Of The Chattahoochee Slimy Salamander (Plethodon Chattahoochee) Using Next-Generation Genomic Data, Jadin Cross Aug 2021

A Reevaluation Of The Phylogeography Of The Chattahoochee Slimy Salamander (Plethodon Chattahoochee) Using Next-Generation Genomic Data, Jadin Cross

Symposium of Student Scholars

The Plethodon glutinosus species complex is a group of large-bodied, lungless salamanders that are widespread across the eastern United States. Species in this group are morphologically cryptic and were originally delimited using allozyme data, but in most cases, the extent of contemporary gene flow between named taxa has not be rigorously evaluated. The Appalachian Mountains of northern Georgia are home to several members of this group—including P. glutinosus, P. teyahalee, P. chlorobryonis, and P. chattahoochee. P. chattahoochee has been found to be especially cryptic both morphologically and genetically as both intraspecific genetic variation and species boundaries within …


Preliminary Inventory And General Aspect Of The Distribution Of Culicidae Species In The Steppe Region (M'Sila, Algeria), Abdelmadjid Yagoub Asloum, Saliha Benhissen, Wafa Habbachi, Sarra Habbachi, Zakaria Hedjouli, Zihad Bouselama, Abdelkrim Tahraoui Aug 2021

Preliminary Inventory And General Aspect Of The Distribution Of Culicidae Species In The Steppe Region (M'Sila, Algeria), Abdelmadjid Yagoub Asloum, Saliha Benhissen, Wafa Habbachi, Sarra Habbachi, Zakaria Hedjouli, Zihad Bouselama, Abdelkrim Tahraoui

Journal of Bioresource Management

Mosquitoes are important living organisms that participate in the different levels of food chains. However, many families include vector species capable to transmit viruses, bacteria and parasites to both humans and animals, threatening the public health. The goal of this work was to describe the biological diversity of mosquito species in different areas in M'sila; Algeria based on the ecological nature of their habitat. The breeding sites found were 18 distributed in five areas (Berhoum, Bou Saâda, El hamel, Hammam Dhalaa and M'sila). The inventory that was carried out from September to April every year from 2017 to 2019 has …


Interspersed Denuded Zone (Idz): How Patchy Leaf Litter Dynamics In A Buckthorn-Invaded Urban Woodland Can Affect Microarthropod Species Richness, Angela Stenberg Aug 2021

Interspersed Denuded Zone (Idz): How Patchy Leaf Litter Dynamics In A Buckthorn-Invaded Urban Woodland Can Affect Microarthropod Species Richness, Angela Stenberg

DePaul Discoveries

Biodiversity loss may serve as a key diagnostic of the Anthropocene. An important driver of this loss is by means of invasive species. In this study of a forest preserve in Chicago, Illinois we examined Interspersed Denuded Zones (IDZs for short), which are areas of patchy leaf litter in invaded forests caused in this case by the rapid decomposition of litter from buckthorn (Rhamnus cathartica). We characterized the leaf litter mass in IDZs and enumerated litter-inhabiting microarthropod populations. We found that plots of high buckthorn density are associated with IDZs: there was significantly less leaf litter mass in …


Refining The Coarse Filter Approach: Using Habitat-Based Species Models To Identify Rarity And Vulnerabilities In The Protection Of U.S. Biodiversity, Anne Davidson, Leah Dunn, Kevin Gergely, Alexa Mckerrow, Steven Williams, Mackenzie Case Aug 2021

Refining The Coarse Filter Approach: Using Habitat-Based Species Models To Identify Rarity And Vulnerabilities In The Protection Of U.S. Biodiversity, Anne Davidson, Leah Dunn, Kevin Gergely, Alexa Mckerrow, Steven Williams, Mackenzie Case

University Author Recognition Bibliography: 2021

Preserving biodiversity and its many components is a priority of conservation science and how to efficiently allocate resources to preserve healthy populations of as many species, habitats, and ecosystems as possible. We used the U.S. Geological Survey (USGS) Gap Analysis Project (GAP) species models released in 2018, which identify predicted habitats for terrestrial vertebrates in the conterminous United States, to illustrate hotspots of biodiversity for the major taxonomic groups. This collection represents the first complete compilation of terrestrial vertebrate species models for the conterminous United States (U.S. Geological Survey (USGS), 2018a). We used the species models but not the available …


Community Structure And Dynamics Of Benthic Macroinvertebrates In A Recreated Headwater Stream System On A Valley Fill In A Retrofitted Watershed Located In The Appalachian Coalfields Of Southeastern Kentucky (U.S.A.), Steven W. Bailey Aug 2021

Community Structure And Dynamics Of Benthic Macroinvertebrates In A Recreated Headwater Stream System On A Valley Fill In A Retrofitted Watershed Located In The Appalachian Coalfields Of Southeastern Kentucky (U.S.A.), Steven W. Bailey

Electronic Theses and Dissertations

The extraction of coal from steep-gradient surface mining sites such as in the Appalachian Coalfields of the U.S. produces excess debris that is often placed in adjacent valleys resulting in the creation of valley fills. Not only are headwater streams buried in the process, but watershed functions are either destroyed outright, or become fragmented and disconnected from adjacent ecosystems resulting in adverse effects to downstream biological communities. In this dissertation, the dynamics of stream macroinvertebrate community structure, composition, diversity, and biotic integrity are assessed at a “proof of concept” stream system recreated on a retrofitted valley fill. For comparison, two …


Nematode Biodiversity In Lincoln, Nebraska's Tallgrass Prairie Corridor, Abigail Borgmeier Aug 2021

Nematode Biodiversity In Lincoln, Nebraska's Tallgrass Prairie Corridor, Abigail Borgmeier

Department of Plant Pathology: Dissertations, Theses, and Student Research

The tallgrass prairie was once one of the most diverse grasslands on the planet, however over 95% has been converted to agriculture in the past 150 years. The remaining prairie is still host to a wide variety of plants, insects, mammals, and soil-dwelling microorganisms, creating an incredibly complex ecosystem. The first aim of this study is to compare three approaches for the measurement of nematode diversity within a 10-mile-long protected prairie habitat corridor near Lincoln, Nebraska. The methods are 1) a traditional morphological analysis of 150 nematodes per study site, 2) a metabarcoding analysis using the 18S genetic marker of …