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Articles 121 - 150 of 156
Full-Text Articles in Ecology and Evolutionary Biology
Elephants - A Conservation Overview, Heidi Riddle, Bruce A. Schulte, Ajay Desai, Laura Van Der Meer
Elephants - A Conservation Overview, Heidi Riddle, Bruce A. Schulte, Ajay Desai, Laura Van Der Meer
Biology Faculty Publications
Loss of habitat is one of the most significant problems facing elephants worldwide, leading to clashes over resources between wildlife and humans where elephants receive the largest part of blame – defined as Human Elephant Conflict (HEC). The sub-Saharan region of Africa contains an approximate population of 500,000 elephants that occupy 37 range countries. The African Elephant (Loxodonta africana) is categorized as Vulnerable in the Red List of Threatened Species; they are listed there as two distinct subspecies: the Savanna Elephant (L.a. africana) and the Forest Elephant (L. a. cyclotis). The Red List of …
Alfred Russel Wallace Notes 1 : Authorship Of Two Early Works, Charles H. Smith, Michael Taylor, Gerrell M. Drawhorn
Alfred Russel Wallace Notes 1 : Authorship Of Two Early Works, Charles H. Smith, Michael Taylor, Gerrell M. Drawhorn
DLPS Faculty Publications
No abstract provided.
A Simplified Method For Monitoring Progestagens In African Elephants Under Field Conditions, Bruce A. Schulte, Elizaeth Freeman, F. Nicole Abbondanza, Jordana Meyer, Janine Brown
A Simplified Method For Monitoring Progestagens In African Elephants Under Field Conditions, Bruce A. Schulte, Elizaeth Freeman, F. Nicole Abbondanza, Jordana Meyer, Janine Brown
Biology Faculty Publications
Summary: 1. Hormone analyses are frequently used to support management of wildlife; however, current techniques are not very field-friendly. In situ hormone monitoring is often expensive, time consuming and logistically difficult. Thus, a new method for assessing ovarian cycle activity non-invasively in free-ranging African elephants was developed. 2. The technique involves handshaking faecal samples in common organic solvents, use of environmentally stable antibody-coated microtitre plates and assessment of progestagen concentrations based on a visual colour change. 3. Studies using ex situ African elephants determined that handshaking faeces in a solution of isopropyl alcohol was effective for extracting the faecal progestagens …
Alfred Russel Wallace Notes 2 : The Spelling "Russel", And Wallace's Date Of Birth, Charles H. Smith, James Williams, Jonathan Stephens, George Beccaloni
Alfred Russel Wallace Notes 2 : The Spelling "Russel", And Wallace's Date Of Birth, Charles H. Smith, James Williams, Jonathan Stephens, George Beccaloni
DLPS Faculty Publications
No abstract provided.
Alfred Russel Wallace, Geographer, Charles H. Smith
Alfred Russel Wallace, Geographer, Charles H. Smith
DLPS Faculty Publications
Among the great explorers and thinkers who advanced geography in the nineteenth century and helped it evolve into the subject that exists today is a man who is not always connected with the field, Alfred Russel Wallace (1823–1913). Most commonly recognized as ‘the other man’ in the history of the discovery of the principle of natural selection, Wallace’s commitment to the study of landscape and its physical, biological, and human elements was lifelong, and resulted in a wide range of contributions to biogeography, physical geography, human geography, and ethnography. In this year of the double anniversaries of Charles Darwin’s birth …
The Origin Of Human Races And The Antiquity Of Man Deduced From The Theory Of “Natural Selection” (1864), Alfred Russel Wallace
The Origin Of Human Races And The Antiquity Of Man Deduced From The Theory Of “Natural Selection” (1864), Alfred Russel Wallace
Alfred Russel Wallace Classic Writings
No abstract provided.
How To Civilize Savages (1865), Alfred Russel Wallace
How To Civilize Savages (1865), Alfred Russel Wallace
Alfred Russel Wallace Classic Writings
No abstract provided.
Human Selection (1890), Alfred Russel Wallace
Human Selection (1890), Alfred Russel Wallace
Alfred Russel Wallace Classic Writings
No abstract provided.
Mimicry, And Other Protective Resemblances Among Animals (1867), Alfred Russel Wallace
Mimicry, And Other Protective Resemblances Among Animals (1867), Alfred Russel Wallace
Alfred Russel Wallace Classic Writings
No abstract provided.
The Effects Of A Reservoir On Genetic Isolation In Two Species Of Darters, Kerstin Lindsay Edberg
The Effects Of A Reservoir On Genetic Isolation In Two Species Of Darters, Kerstin Lindsay Edberg
Masters Theses & Specialist Projects
The addition of dams into a riverine system causes a wide range of changes (i.e., sedimentation, erosion, thermal) to the river as well as to the fish assemblages of that river. Although there have been many studies documenting the changes that occur to the fish assemblages in the impounded river, there have been fewer studies examining the effects of a reservoir on the fish inhabiting the tributaries upstream of the impoundment. One possible impact of a reservoir could be to act as a barrier to fish migration between streams.
To determine if reservoirs restrict migration, the genetic diversity of two …
On The Zoological Geography Of The Malay Archipelago (1859), Alfred Russel Wallace
On The Zoological Geography Of The Malay Archipelago (1859), Alfred Russel Wallace
Alfred Russel Wallace Classic Writings
No abstract provided.
The Development And Role Of Peripheral Auditory Structures In Otocinclus Affinis, Sri Kiran Kumar Reddy Botta
The Development And Role Of Peripheral Auditory Structures In Otocinclus Affinis, Sri Kiran Kumar Reddy Botta
Masters Theses & Specialist Projects
Loricariidae is a very diverse family of catfishes found primarily in the Amazon River basin. These catfishes have a unique characteristic feature of having fenestrae (holes) in the skull region (compound pterotic bone) adjacent to their bi-lobed swim bladder. Since the swim bladders and the compound pterotic may act as an external ear for hearing in this taxon, I hypothesized that these swim bladders structures have an acoustical functional in the loricariid Otocinclus affinis. In order to understand the development of these structures in O. affinis, I first monitored the ontogeny of the compound pterotic bone by clearing …
Assessment Of The Endangered Species Podarcis Carbonelli On A Microgeographic Scale: A Molecular, Morphological And Physiological Approach, Maria Clara Figueirinhas Do Amaral
Assessment Of The Endangered Species Podarcis Carbonelli On A Microgeographic Scale: A Molecular, Morphological And Physiological Approach, Maria Clara Figueirinhas Do Amaral
Masters Theses & Specialist Projects
The lizard Podarcis carbonelli is an endangered species endemic to the Iberian Peninsula. One location where this species occurs is at the Berlengas Natural Preserve, an Atlantic archipelago off the coast of Portugal. These island populations are geographically separated from nearby mainland populations. The fundamental question is, are these insular individuals distinct from the mainland populations? Four localities were chose for comparison: two island populations and two nearby coastal populations. We assessed this question using three distinct approaches: molecular, morphological and physiological approach. We sequenced the 12S RNA, the mtDNA Control Region and the 7th intron of the !-fibrinogen gene …
Ecological Impact Of Epigeal Termitaria On Vertebrates In The Tsavo Region Of Southeast Kenya, Margaret M. Mahan
Ecological Impact Of Epigeal Termitaria On Vertebrates In The Tsavo Region Of Southeast Kenya, Margaret M. Mahan
Masters Theses & Specialist Projects
Termites ecologically engineer their environment by producing termitaria (mounds) used by many other species as dens, lookouts or food sources. The role of termite mounds in biological communities is relatively unknown, despite their ubiquitous nature. I investigated their impact on vertebrates in the Tsavo region of Kenya. Through the characterization of mounds, trapping, direct observation, and collecting microclimate data, I was able to determine the importance of mounds to vertebrates. I found uniform dispersion of mounds, that soil type is correlated with the size of mounds, and that vertebrate activity increases with mound size. I also found no significant differences …
A Comparative Ecological Study Of Two Sister Species Of Darters In Kentucky, Etheostoma Kantuckeense And Etheostoma Lawrencei, Bjorn Victor Schmidt
A Comparative Ecological Study Of Two Sister Species Of Darters In Kentucky, Etheostoma Kantuckeense And Etheostoma Lawrencei, Bjorn Victor Schmidt
Masters Theses & Specialist Projects
Etheostoma kantuckeense and E. lawrencei are former members of the wide ranging E. spectabile species complex. Etheostoma kantuckeense is endemic to the Barren River Basin in Southern Kentucky and Northern Tennessee, while E. lawrencei occurs in the Green River, Salt River, and Cumberland River Basins of Central and Eastern Kentucky. Isolation of populations within these drainages has allowed for a relatively recent evolutionary divergence, leading to slight differences in morphology. This study was conducted to address if geographical isolation has led to measurable differences in the ecology of these two species. In particular, habitat preference across three spatial scales and …
Investigation Of A Fresh African Elephant Carcass By Conspecifics, Christen Merte, Katie Gough, Bruce A. Schulte
Investigation Of A Fresh African Elephant Carcass By Conspecifics, Christen Merte, Katie Gough, Bruce A. Schulte
Biology Faculty Publications
This examination of elephant bones and ivory indicates that elephants show an elevated level of interest in conspecifics over other dead animals. Elephants do not seem to express special interest in dead kin but rather they appear to have a generalized response to injured, dying and deceased conspecifics (Douglas Hamilton et al. 2006, McComb et al. 2006). The present study reports the behaviour of a group of elephants in response to a euthanized adult male elephant that suffered severe wounds inflicted by a conspecific male. Most of the observations from previous studies have been on females and female group members. …
Prospecting For Mammalian Chemical Signals Via Solventless Extraction Techniques: An Elephantine Task, Thomas Goodwin, Bruce A. Schulte
Prospecting For Mammalian Chemical Signals Via Solventless Extraction Techniques: An Elephantine Task, Thomas Goodwin, Bruce A. Schulte
Biology Faculty Publications
In contrast to a plethora of known insect pheromones, a paucity of mammalian pheromones has been identified, two of which have been in elephants (Albone, 1984; Brown and Macdonald, 1985; Wyatt, 2003; Burger, 2005). Elephants possess one of the world’s best chemosensory systems, due in no small measure to their prehensile trunk. The trunk is not only the gateway to smelling (primary olfaction), but also the means by which chemical signals are conveyed from their source to the openings of the vomeronasal organ ducts in the roof of the mouth (the flehmen response; secondary olfaction) (Rasmussen, 1999). The late L. …
What's In A Word? On Reading--And Misreading--Alfred Russel Wallace, Charles H. Smith
What's In A Word? On Reading--And Misreading--Alfred Russel Wallace, Charles H. Smith
DLPS Faculty Publications
No abstract provided.
On The Monkeys Of The Amazon (1852), Alfred Russel Wallace
On The Monkeys Of The Amazon (1852), Alfred Russel Wallace
Alfred Russel Wallace Classic Writings
No abstract provided.
On The Law Which Has Regulated The Introduction Of New Species (1855), Alfred Russel Wallace
On The Law Which Has Regulated The Introduction Of New Species (1855), Alfred Russel Wallace
Alfred Russel Wallace Classic Writings
No abstract provided.
On The Tendency Of Varieties To Depart Indefinitely From The Original Type (1858), Alfred Russel Wallace
On The Tendency Of Varieties To Depart Indefinitely From The Original Type (1858), Alfred Russel Wallace
Alfred Russel Wallace Classic Writings
No abstract provided.
Wallace, Spiritualism, And Beyond: "Change," Or "No Change"?, Charles H. Smith
Wallace, Spiritualism, And Beyond: "Change," Or "No Change"?, Charles H. Smith
DLPS Faculty Publications
No abstract provided.
Reflections On Wallace, Charles H. Smith
Reflections On Wallace, Charles H. Smith
DLPS Faculty Publications
An unpublished paper has recently come to light, which shows that even at an early age, Alfred Russel Wallace was bold enough to approach the scientific establishment with his ideas.
Ua3/9/5 Conservation Reserve Enhancement Program (Crep), Wku President's Office
Ua3/9/5 Conservation Reserve Enhancement Program (Crep), Wku President's Office
WKU Administration Documents
Talking points used by WKU president Gary Ransdell regarding WKU's partnering with Conservation Reserve Enhancement Program.
Alfred Russel Wallace: Past And Future [Guest Editorial], Charles H. Smith
Alfred Russel Wallace: Past And Future [Guest Editorial], Charles H. Smith
DLPS Faculty Publications
The naturalist Alfred Russel Wallace (1823–1913) has for many years been standing in the shadow of his more famed co-discoverer of the principle of natural selection, Charles Darwin. Despite outward similarities between the two men’s formulation of the principle, Wallace had fit his appreciation of natural selection into views on evolution that were quite different from Darwin’s. A closer examination of what Wallace had in mind suggests a model of process in which natural selection per se acts as the negative feedback mechanism (actually, a ‘statespace’) in the relation between population and environment, and environmental engagement as made possible by …
Alfred Russel Wallace: A Capsule Biography, Charles H. Smith
Alfred Russel Wallace: A Capsule Biography, Charles H. Smith
DLPS Faculty Publications
No abstract provided.
Wallace, Alfred Russel (1823-1913), Charles H. Smith
Wallace, Alfred Russel (1823-1913), Charles H. Smith
DLPS Faculty Publications
No abstract provided.
Introduction (To Volume One Of Alfred Russel Wallace: Writings On Evolution, 1843-1912)*, Charles H. Smith
Introduction (To Volume One Of Alfred Russel Wallace: Writings On Evolution, 1843-1912)*, Charles H. Smith
DLPS Faculty Publications
No abstract provided.
Teacher Perceptions Of The Impacts Of Environmental Education On The Teaching Process And On Student Learning, Angela Nicole Castelli
Teacher Perceptions Of The Impacts Of Environmental Education On The Teaching Process And On Student Learning, Angela Nicole Castelli
Masters Theses & Specialist Projects
TEACHER PERCEPTIONS OF THE IMPACTS OF ENVIRONMENTAL EDUCATION ON THE TEACHING PROCESS AND ON STUDENT LEARNING Angela Nicole Castelli December 2004 (48) Directed by: Terry L. Wilson, Steve L. Spencer, and Raymond A. Poff Department of Physical Education and Recreation Western Kentucky University The Mammoth Cave National Park Environmental Education Partnership (EEP) has worked with schools and teachers to provide the students with curriculum-based environmental education programs on a regular basis throughout the school year. Because of this environmental education partnership, this study addresses the following questions: What are teacher perceptions of the impacts of environmental education on student learning …
Biodiversity: The World Of Life, Charles H. Smith
Biodiversity: The World Of Life, Charles H. Smith
DLPS Faculty Publications
No abstract provided.