Open Access. Powered by Scholars. Published by Universities.®

Ecology and Evolutionary Biology Commons

Open Access. Powered by Scholars. Published by Universities.®

8466 Full-Text Articles 13943 Authors 1115490 Downloads 199 Institutions

All Articles in Ecology and Evolutionary Biology

Faceted Search

8466 full-text articles. Page 1 of 241.

Investigating Genetic Differences Between Strains Of Janthinobacterium Lividum On Salamanders And In Their Environment, Rhiannon E. Black 2016 University of Tennessee - Knoxville

Investigating Genetic Differences Between Strains Of Janthinobacterium Lividum On Salamanders And In Their Environment, Rhiannon E. Black

University of Tennessee Honors Thesis Projects

No abstract provided.


Community Structure And Production Of The Macrobenthos On Four Artificial Reefs In The Mississippi Sound In Relation To Substrate And Profile Type, Patrick Daniel Gillam 2016 University of Southern Mississippi

Community Structure And Production Of The Macrobenthos On Four Artificial Reefs In The Mississippi Sound In Relation To Substrate And Profile Type, Patrick Daniel Gillam

Master's Theses

In recent years, the Mississippi Department of Marine Resources (DMR) has made a concerted effort to enhance its coastal fishery resources by creating artificial reefs. Through this effort, 73 nearshore reefs have been created across the MS coast. Different substrate types used to construct MS artificial reefs include oyster shell and cement rubble. Two types of reef architecture used include high profile breakwater and low profile submerged structures. This study compared the benthic biota associated with oyster shell and cement rubble substrates among four artificial reefs representing high and low profile structures in summer 2011. Colonized benthic biota were quantified ...


The North American Grouse: Their Biology And Behavior, Paul A. Johnsgard 2016 University of Nebraska-Lincoln

The North American Grouse: Their Biology And Behavior, Paul A. Johnsgard

Zea E-Books

The ten currently recognized species of grouse in North America have played an important role in America’s history, from the famous but ill-fated heath hen, a primary source of meat for the earliest New England immigrants, to the ruffed grouse, currently one of the most abundant and soughtafter upland game birds in more than 40 states and provinces. This book summarizes the ecology, reproductive biology, and social behavior of all ten of the extant North American grouse species. It also describes the current status of grouse populations, some of which are perilously close to extinction. The social behavior of ...


Initiation And Early Development Of Fiber In Wild And Cultivated Cotton, Kara M. Butterworth, Dean C. Adams, Harry T. Horner, Jonathan F. Wendel 2016 Iowa State University

Initiation And Early Development Of Fiber In Wild And Cultivated Cotton, Kara M. Butterworth, Dean C. Adams, Harry T. Horner, Jonathan F. Wendel

Harry Horner

Cultivated cotton fiber has undergone transformation from short, coarse fibers found in progenitor wild species to economically important, long, fine fibers grown globally. Morphological transformation requires understanding of development of wild fiber and developmental differences between wild and cultivated fiber.We examined early development of fibers, including abundance and placement on seed surface, nucleus position, presence of vacuoles, and fiber size and shape. Four species were studied using microscopic, morphometric, and statistical methods: Gossypium raimondii (wild D genome), Gossypium herbaceum (cultivated A genome), Gossypium hirsutum (wild tetraploid), and Gossypium hirsutum (cultivated tetraploid). Early fiber development is highly asynchronous in G ...


Animal Pain, Bernard E. Rollin 2016 Colorado State University - Fort Collins

Animal Pain, Bernard E. Rollin

Bernard Rollin, Ph.D.

Some time ago, I received a telephone call from an eminent primatologist asking me to give the keynote address at a scientific seminar on animal pain. My first response was to express surprise that they were inviting a philosopher. His reply was remarkable, if only for its rarity among scientists: "The truly interesting and important issues concerning pain in animals are not scientific ones," he said. "They are moral, philosophical, and conceptual ones. And the total failure of science to engage or even acknowledge these issues discredits biomedical science and weakens its conceptual base." I hope to show you that ...


The Shellfish Corner: Aquaculture Of Exotic Shellfish Species, Michael A. Rice 2016 University of Rhode Island

The Shellfish Corner: Aquaculture Of Exotic Shellfish Species, Michael A. Rice

Michael A Rice

Successful commercial aquaculture operations have grown in the Pacific Northwest and the Canadian West Coast on two exotic species Crassostrea gigas and Tapes philippinarum introduced from Japan during the 20th Century. Introduction of the Asian oyster C. ariakensis was proposed as a means for recovering distressed oyster fisheries in Chesapeake Bay, but it was not pursued after extensive public review deemed the practice too risky. However due to increased global shipping, exotic bivalves are being transferred worldwide. The recent introduction of a Western Hemisphere mussel Mytella charruana into the Philippines provides a good case study of shellfish aquaculture industry opportunities ...


The Effects Of Urbanization On Leaf Breakdown Rates In A Rock Island Watershed, Jillian M. Jespersen, Laura Becker, Kortney Hix, C. Kevin Geedey 2016 Augustana College, Rock Island Illinois

The Effects Of Urbanization On Leaf Breakdown Rates In A Rock Island Watershed, Jillian M. Jespersen, Laura Becker, Kortney Hix, C. Kevin Geedey

Celebration of Learning

The ability of streams to break down leaves is widely used as an indicator of stream health. In this study, a series of six streams within the Rock Island, Ill., watershed, which were similar in discharge, order, temperature and pH, were categorized as healthy or unhealthy based on chloride levels. This study was part of a broader study of the Rock Island watershed by Augustana. Maple leaves were collected shortly after abscission, weighed, packaged in mesh bags (approximately 5g per bag) and deployed in the streams for two- and four-week periods. After each time period, the leaves were removed, dried ...


Microhabitat Use Affects Brain Size And Structure In Intertidal Gobies, Gemma E. White, Culum Brown 2016 Macquarie University

Microhabitat Use Affects Brain Size And Structure In Intertidal Gobies, Gemma E. White, Culum Brown

Culum Brown, Ph.D.

The ecological cognition hypothesis poses that the brains and behaviours of individuals are largely shaped by the environments in which they live and the associated challenges they must overcome during their lives. Here we examine the effect of environmental complexity on relative brain size in 4 species of intertidal gobies from differing habitats. Two species were rock pool specialists that lived on spatially complex rocky shores, while the remainder lived on dynamic, but structurally simple, sandy shores. We found that rock pool-dwelling species had relatively larger brains and telencephalons in particular, while sand-dwelling species had a larger optic tectum and ...


Neotype Designation For Scorpiops Pachmarhicus Bastawade, 1992 (Scorpiones: Euscorpiidae), With Redescription And Notes On The Species, Zeeshan A. Mirza, Gaurang Gowande 2016 Tata Institute of Fundamental Research

Neotype Designation For Scorpiops Pachmarhicus Bastawade, 1992 (Scorpiones: Euscorpiidae), With Redescription And Notes On The Species, Zeeshan A. Mirza, Gaurang Gowande

Euscorpius

Scorpiops pachmarhicus Bastawade, 1992 was described based on specimens collected from Pachmarhi, Madhya Pradesh. An expedition to the type locality led to discovery of a population at the type locality which permit us to designate a neotype for the species as types of the species are presently not traceable.


Anticipating Elimination Of Mosquito-Borne Diseases, Suzanne M. O'Regan, Jonathan Lillie, John M. Drake 2016 National Institute of Mathematical and Biological Synthesis (NIMBioS)

Anticipating Elimination Of Mosquito-Borne Diseases, Suzanne M. O'Regan, Jonathan Lillie, John M. Drake

Biology and Medicine Through Mathematics Conference

No abstract provided.


The Influence Of Temperature Variation On Dengue Fever: A Model-Based Investigation, Michael A. Robert, Paula D. Weber, Rebecca C. Christofferson, Christopher N. Mores, Helen J. Wearing 2016 University of New Mexico

The Influence Of Temperature Variation On Dengue Fever: A Model-Based Investigation, Michael A. Robert, Paula D. Weber, Rebecca C. Christofferson, Christopher N. Mores, Helen J. Wearing

Biology and Medicine Through Mathematics Conference

No abstract provided.


Dynamics Of Two Pathogens In A Single Tick Population, Alexis White 2016 Old Dominion University

Dynamics Of Two Pathogens In A Single Tick Population, Alexis White

Biology and Medicine Through Mathematics Conference

No abstract provided.


Growth Dynamics For Pomacea Maculata, Lihong Zhao, Karyn L. Sutton, Jacoby Carter 2016 University of Louisiana at Lafayette

Growth Dynamics For Pomacea Maculata, Lihong Zhao, Karyn L. Sutton, Jacoby Carter

Biology and Medicine Through Mathematics Conference

No abstract provided.


Spatial Patterning In The York River Tidal Marshes Through The Interaction Of Cordgrass, Mussels And Sediment, Sofya Zaytseva, Leah Shaw, Rom Lipcius, Junping Shi 2016 College of William and Mary

Spatial Patterning In The York River Tidal Marshes Through The Interaction Of Cordgrass, Mussels And Sediment, Sofya Zaytseva, Leah Shaw, Rom Lipcius, Junping Shi

Biology and Medicine Through Mathematics Conference

No abstract provided.


Movement And Dynamics Of Norway Rats In An Urban Landscape, Rosalyn Rael, Caz Taylor 2016 Tulane University of Louisiana

Movement And Dynamics Of Norway Rats In An Urban Landscape, Rosalyn Rael, Caz Taylor

Biology and Medicine Through Mathematics Conference

No abstract provided.


Preserving Biodiversity For A Climate Change Future: A Resilience Assessment Of Three Bay Area Species--Adenostoma Fasciculatum (Chamise), Arctostaphylos Canescens (Hoary Manzanita), And Arctostaphylos Virgata (Marin Manzanita), Alison S. Pollack 2016 University of San Francisco

Preserving Biodiversity For A Climate Change Future: A Resilience Assessment Of Three Bay Area Species--Adenostoma Fasciculatum (Chamise), Arctostaphylos Canescens (Hoary Manzanita), And Arctostaphylos Virgata (Marin Manzanita), Alison S. Pollack

Master's Projects

Anthropogenic climate change is an undeniable threat to the future of the natural world and human civilization. These shifts will have profound impacts on vegetation, especially for species endemic to isolated regions or sensitive to climate change factors. However, species resilience can predict success into the next century. Resilience is defined as the ability to withstand climate change factors, whereas vulnerability is defined as susceptibility to climate induced stress or damage.

Chaparral and coastal scrub ecosystems within the Bay Area of California provide a unique context for examining resilience, as many species are adapted to high temperatures, drought, and wildfire ...


Phylogenetic Analysis Of Human Cytomegalovirus Pus27 And Pus28: Ascertaining An Independent Or Linked Evolutionary History, Jessica A. Scarborough 2016 University of San Francisco

Phylogenetic Analysis Of Human Cytomegalovirus Pus27 And Pus28: Ascertaining An Independent Or Linked Evolutionary History, Jessica A. Scarborough

Undergraduate Honors Theses

Human cytomegalovirus (HCMV) is a widespread pathogen that is particularly skilled at evading immune detection and defense mechanisms, largely due to extensive co-evolution with its host’s immune system. One aspect of this co-evolution involves the acquisition of four virally encoded GPCR chemokine receptor homologs, products of the US27, US28, UL33 and UL78 genes. G protein-coupled receptors (GPCR) are the largest family of cell surface proteins, found in organisms from yeast to humans. In this research, phylogenetic analysis was used to investigate the origins of the US27 and US28 genes, which are adjacent in the viral genome. The results indicate ...


Producing Knowledge: The Social Made Visible In The Division Of Environmental Biology Of The National Science Foundation, Patrick Southern 2016 SIT Graduate Institute

Producing Knowledge: The Social Made Visible In The Division Of Environmental Biology Of The National Science Foundation, Patrick Southern

Capstone Collection

This inquiry explores how knowledge is produced in the Division of Environmental Biology (DEB) of the National Science Foundation. Beginning from a poststructuralist understanding of science as firmly embedded in the unequal relations of society, this study sought to examine how the policies and procedures of funding research proposals in DEB influence and are influenced by those relations. Using an institutional ethnography approach to analysis, data were collected from analyzing publicly available texts from the division, NSF, Congress, the Office of Management and Budget, and the research community. The analysis demonstrates how the activities of DEB could maintain or exacerbate ...


Rescuing Perishable Neuroanatomical Information From A Threatened Biodiversity Hotspot: Remote Field Methods For Brain Tissue Preservation Validated By Cytoarchitectonic Analysis, Immunohistochemistry, And X-Ray Microcomputed Tomography, Daniel F. Hughes, Ellen M. Walker, Paul M. Gignac, Anais Martinez, Kenichiro Negishi, Carl S. Lieb, Eli Greenbaum, Arshad M. Khan 2016 University of Texas at El Paso

Rescuing Perishable Neuroanatomical Information From A Threatened Biodiversity Hotspot: Remote Field Methods For Brain Tissue Preservation Validated By Cytoarchitectonic Analysis, Immunohistochemistry, And X-Ray Microcomputed Tomography, Daniel F. Hughes, Ellen M. Walker, Paul M. Gignac, Anais Martinez, Kenichiro Negishi, Carl S. Lieb, Eli Greenbaum, Arshad M. Khan

Arshad M. Khan, Ph.D.

Biodiversity hotspots, which harbor more endemic species than elsewhere on Earth, are
increasingly threatened. There is a need to accelerate collection efforts in these regions
before threatened or endangered species become extinct. The diverse geographical, ecological,
genetic, morphological, and behavioral data generated from the on-site collection of
an individual specimen are useful for many scientific purposes. However, traditional methods
for specimen preparation in the field do not permit researchers to retrieve neuroanatomical
data, disregarding potentially useful data for increasing our understanding of brain
diversity. These data have helped clarify brain evolution, deciphered relationships between
structure and function, and revealed constraints ...


Rescuing Perishable Neuroanatomical Information From A Threatened Biodiversity Hotspot: Remote Field Methods For Brain Tissue Preservation Validated By Cytoarchitectonic Analysis, Immunohistochemistry, And X-Ray Microcomputed Tomography, Daniel F. Hughes, Ellen M. Walker, Paul M. Gignac, Anais Martinez, Kenichiro Negishi, Carl S. Lieb, Eli Greenbaum, Arshad M. Khan 2016 University of Texas at El Paso

Rescuing Perishable Neuroanatomical Information From A Threatened Biodiversity Hotspot: Remote Field Methods For Brain Tissue Preservation Validated By Cytoarchitectonic Analysis, Immunohistochemistry, And X-Ray Microcomputed Tomography, Daniel F. Hughes, Ellen M. Walker, Paul M. Gignac, Anais Martinez, Kenichiro Negishi, Carl S. Lieb, Eli Greenbaum, Arshad M. Khan

Arshad M. Khan, Ph.D.

Biodiversity hotspots, which harbor more endemic species than elsewhere on Earth, are
increasingly threatened. There is a need to accelerate collection efforts in these regions
before threatened or endangered species become extinct. The diverse geographical, ecological,
genetic, morphological, and behavioral data generated from the on-site collection of
an individual specimen are useful for many scientific purposes. However, traditional methods
for specimen preparation in the field do not permit researchers to retrieve neuroanatomical
data, disregarding potentially useful data for increasing our understanding of brain
diversity. These data have helped clarify brain evolution, deciphered relationships between
structure and function, and revealed constraints ...


Digital Commons powered by bepress