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Articles 1 - 30 of 40
Full-Text Articles in Life Sciences
Invasive Annual Grasses—Reenvisioning Approaches In A Changing Climate, David Archer, David Toledo, Dana M. Blumenthal, Justin Derner, Usda Ars Burns, Oregon, Kirk Davies, Erik Hamerlynck, Roger Sheley, Pat Clark, Fred Pierson, Charlie Clements, Beth Newingham, Brian Rector, John Gaskin, Carissa L. Wonkka, Kevin Jensen, Tom Monaco, Lance T. Vermeire, Stephen L. Young
Invasive Annual Grasses—Reenvisioning Approaches In A Changing Climate, David Archer, David Toledo, Dana M. Blumenthal, Justin Derner, Usda Ars Burns, Oregon, Kirk Davies, Erik Hamerlynck, Roger Sheley, Pat Clark, Fred Pierson, Charlie Clements, Beth Newingham, Brian Rector, John Gaskin, Carissa L. Wonkka, Kevin Jensen, Tom Monaco, Lance T. Vermeire, Stephen L. Young
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
For nearly a century, invasive annual grasses have increasingly impacted terrestrial ecosystems across the western United States. Weather variability associated with climate change and increased atmospheric carbon dioxide (CO2) are making even more difficult the challenges of managing invasive annual grasses. As part of a special issue on climate change impacts on soil and water conservation, the topic of invasive annual grasses is being addressed by scientists at the USDA Agricultural Research Service to emphasize the need for additional research and future studies that build on current knowledge and account for (extreme) changes in abiotic and biotic conditions. Much research …
Rethinking Human-Local Wildlife Relations, Yin Chan
Rethinking Human-Local Wildlife Relations, Yin Chan
Critical and Creative Thinking Capstones Collection
The plight of suburban wildlife receives considerably less attention than that of exotic or endangered species despite facing similar threats due to the decline of their natural habitats as humans expand upon them. From the perspective of a reflective practitioner, this paper provides new avenues to rethink current views on human-local wildlife relations and answer some of the difficult questions surrounding the topic. The methodology of Action Research is employed to explore concepts relevant to human-local wildlife relations. A synthesized practical framework integrating Action Research with Permaculture Design is proposed to create models for mutually beneficial coexistence between local wildlife …
Mp765: Creating The Orono Bog Boardwalk: A Facility For Education, Research, And Recreation, Ronald B. Davis
Mp765: Creating The Orono Bog Boardwalk: A Facility For Education, Research, And Recreation, Ronald B. Davis
Miscellaneous Publications
A memoir by Dr. Ronald Davis detailing the creation of the Orono Bog Boardwalk. The Orono Bog Boardwalk is a premier destination in the Bangor/Orono area for persons wishing to experience the beauty and fascinating plants and animals of a Maine bog. The 1-mile boardwalk loop trail begins at the forested wetland edge in the Bangor City Forest, and after 800 feet crosses the Orono town line into the portion of the Orono Bog owned by the University of Maine. Along the way the boardwalk passes through a wide range of changing vegetation and environments on its way to the …
Conservation And Variation In Agricultural Landscapes: A Survey Of Insect Populations Across Naranjilla Cultivation Methods In The Eastern Andean Cloud Forest, Ian Zakelj
Independent Study Project (ISP) Collection
This study compared insect biodiversity among five sites in agricultural landscapes and natural forest in the El Placer community in the valley of the Rio Pastaza in the eastern Andean cloud forest. The area is of vital importance to conservation, as it falls in the ecological corridor between the Sangay and Llanganates national parks. The primary crop produced by the residents of El Placer is naranjilla, and it is cultivated in a variety of manners, mostly with intensive chemical use. The goal of the study was to find out which types of practices were the least harmful to the insect …
Composition, Population Structure And Regeneration Potential Of Tree Species In Oak-Dominated Mixed Forests Of Rajouri District In Jammu And Kashmir, India, Mohd Junaid Jazib, Javed Manzoor
Composition, Population Structure And Regeneration Potential Of Tree Species In Oak-Dominated Mixed Forests Of Rajouri District In Jammu And Kashmir, India, Mohd Junaid Jazib, Javed Manzoor
Journal of Bioresource Management
The study was carried out to explore the diversity and regeneration potential of trees species in mixed Oak forest of Rajouri district of Jammu and Kashmir (India). A total of 20 tree species were recorded from the area dominated by various species of oak particularly Quercus leuchotrichophora. Quercus leuchotrichophora shows maximum values of density, basal cover and IVI. In different localities, it has different groups of associates like Q. floribunda, Q. semecarpifolia, Q. glauca, Buxux wallichiana, Pinus roxburghii, Aesculus indica, Rhododendron arboreum, etc. Majority of the species show very poor regeneration and thus demands for immediate implementation of appropriate conservation …
Mr449: Allagash Wilderness Waterway Visitor Survey 2019, John J. Daigle, Ashley Cooper
Mr449: Allagash Wilderness Waterway Visitor Survey 2019, John J. Daigle, Ashley Cooper
Miscellaneous Reports
Quality in outdoor recreation can be defined as the degree to which recreation opportunities provide the experiences for which they are designed and managed. Key to protecting the backcountry experiences is an understanding of the different types of visitors to the Allagash Wilderness Waterway, each one with different needs and expectations, and the different levels of importance they place on recreation opportunities and conditions. In this report, visitor management implications and suggested further research focus on the diversity of use of the Allagash Wilderness Waterway in order to maximize the quality of the visitor experiences while protecting the unique natural …
How Weeds Affect Insects In Mango Cultivation Of South Florida, Blaire Kleiman
How Weeds Affect Insects In Mango Cultivation Of South Florida, Blaire Kleiman
FIU Electronic Theses and Dissertations
The use of weeds as insectary plants is an emerging management tactic by agroecologists and entomologists to sustain beneficial insect species. Fallow lands have always been used by insects and are an important part of their diet in fragmented ecosystems. Weeds provide floral resources to beneficial insects such as pollinators, parasitoids, and predators and resources to keep them within a field in between crop flowering. Using weeds as a tool in tropical fruit production reliant on pollination like Mango (Mangifera indica) allows farmers to reduce herbicide use, increases the biodiversity of both plants and insects, and increases pollination of crops …
A Year In Syntropy: Exploring Syntropic Agriculture, Ajah Eills
A Year In Syntropy: Exploring Syntropic Agriculture, Ajah Eills
College Honors Program
Syntropic agriculture is a form of sustainable agriculture that originated in Brazil around 25 years ago. Although it has since spread throughout Brazil and Australia, there has yet to be a comprehensive study of the driving scientific principles behind syntropy. For my thesis, I conducted literature research and interviews with farmers, with the goal of describing the ecological principles on which syntropy is based, including its primary goal to improve soil health. Much of my thesis contrasted syntropic agriculture with conventional agriculture as practiced in the United States today, but I also explored the differences between syntropic agriculture and other …
Black Vulture Conflict And Management In The United States: Damage Trends, Management Overview, And Research Needs, Bryan M. Kluever, Morgan B. Pfeiffer, Scott C. Barras, Brett G. Dunlap, Lee A. Humberg
Black Vulture Conflict And Management In The United States: Damage Trends, Management Overview, And Research Needs, Bryan M. Kluever, Morgan B. Pfeiffer, Scott C. Barras, Brett G. Dunlap, Lee A. Humberg
Human–Wildlife Interactions
Contrary to rapid declines of many vulture (Accipitridae, Cathartidea) species worldwide, black vulture (Coragyps atratus) populations are increasing and expanding their range in North America. Vultures exhibit complex behaviors and can adapt to any human-dominated landscape or land use. These traits, combined with population growth and range expansion, have contributed to increased human–vulture conflicts. Our goal was to summarize the current status and trends in human–black vulture conflicts (hereafter human–vulture conflicts), review available management strategies, identify knowledge gaps, and provide recommendations to enhance management and understanding of this species and the associated conflicts. We found human–vulture conflicts are …
Substantion Of The Parameters Of The Working Bodies Of The Cultivator For High-Quality Tillage, A.K. Igamberdiev, G.F. Usmanova
Substantion Of The Parameters Of The Working Bodies Of The Cultivator For High-Quality Tillage, A.K. Igamberdiev, G.F. Usmanova
Irrigation and Melioration
In the article, the use of the entire set of soil-processing bodies as a result of the use of traditional technologies reduces soil fertility, increasing the use of natural resources, the most pressing problems in the process of soil processing, that is, soil treatment. Experimental studies have shown that the large amount of moisture content in the soil during the cultivation process causes large intake of moisture due to the release of large particles. Due to the varied soil and climatic conditions of the republic, it is recommended to use a differential approach to the selection of soil treatment methods …
Physiological Ecology Of Overwintering And Cold-Adapted Arthropods, Leslie Jean Potts
Physiological Ecology Of Overwintering And Cold-Adapted Arthropods, Leslie Jean Potts
Theses and Dissertations--Entomology
Given their abundance and diversity, arthropods are an excellent system to investigate biological responses to winter. Winter conditions are being majorly impacted by climate change, and therefore understanding the overwintering biology of arthropods is critical for predicting ecological responses to climate change. In Chapters 2 and 3, I investigate the winter biology of a winter-active wolf spider. I show that winter-active spiders can take advantage of periodic prey resources and grown in the winter, which may allow them to get a jumpstart on spring reproduction. I also investigate spiders’ ability to track changes in their environment by quantifying low temperature …
Diversity And Abundance Of Soil Microbes Differ Along A Forest-Pasture Transect, Hannah Suli, Ashley Schumann, Cleo Bickley, Jasmine Rodriguez
Diversity And Abundance Of Soil Microbes Differ Along A Forest-Pasture Transect, Hannah Suli, Ashley Schumann, Cleo Bickley, Jasmine Rodriguez
IdeaFest: Interdisciplinary Journal of Creative Works and Research from Cal Poly Humboldt
No abstract provided.
Food Writing, Carol Ann Connare Ms
Food Writing, Carol Ann Connare Ms
Sustainability Education Resources
This advanced writing four-credit course approaches food writing from a news reporting perspective. The Pioneer Valley is home to a network of food producers, from farmers and cheesemakers to brewers and beekeepers. Students will travel into the field to meet people who make and grow what we eat, conducting interviews and collecting information to synthesize into multimedia stories for publication around themes such as health, history, travel, ecology, animal welfare, social change, nutrition, and home cooking. Students will experience the full spectrum of food writing—blogs, magazine articles, personal essays, reviews, recipes, social and cultural commentary—and create stories in a variety …
Confirming World-Wide Distribution Of An Agriculturally Important Lacewing, Chrysoperla Zastrowi Sillemi, Using Songs, Morphology, Mitochondrial Gene Sequencing, And Phylogenetic Reconstruction, Zoe Mandese
Honors Scholar Theses
The Chrysoperla carnea-group of green lacewings is a cryptic species complex. Species within the group are morphologically similar, yet isolated from one another via reproductive mating song. Chrysoperla zastrowi, a species within the carnea-group, is currently described with a distribution ranging from South Africa to the Middle East and India. However, recent collections of carnea-group lacewings from Guatemala and California were preliminarily identified as Chrysoperla zastrowi based upon similarities in their vibrational courtship songs. This analysis aims to place six specimens, collected by collaborators in Guatemala, Armenia, Iran, and California, into a pre-existing phylogeny of the …
Utah Master Naturalist, Mountain Adventures Manual, Mark Larese-Casanova
Utah Master Naturalist, Mountain Adventures Manual, Mark Larese-Casanova
All Current Publications
The Utah Master Naturalist Mountain Adventures Manual provides a comprehensive view of mountain ecosystems in Utah, from the geology and climate that influence mountain ecosystems, to the plant and animal communities and their unique adaptations for survival. The Manual explores the human perspective from historic peoples to current management.
Utah Master Naturalist Desert Explorations Manual, Mark Larese-Casanova
Utah Master Naturalist Desert Explorations Manual, Mark Larese-Casanova
All Current Publications
The Utah Master Naturalist Desert Explorations Manual provides a comprehensive view of desert ecosystems in Utah, from the geology and climate that create deserts, to the plant and animal communities and their unique adaptations for survival. The Manual explores the human perspective from historic peoples to current management.
Utah Master Naturalist Watershed Investigations Manual, Mark Larese-Casanova
Utah Master Naturalist Watershed Investigations Manual, Mark Larese-Casanova
All Current Publications
The Utah Master Naturalist Watershed Investigations Manual provides a comprehensive view of watershed ecosystems in Utah, from high mountain streams to Great Salt Lake, and the plant and animal communities and their unique adaptations for survival. The Manual explores how people interact with watersheds, including water demands in a desert, water quality issues, and current management.
Climate Dynamics, Invader Fitness, And Ecosystem Resistance In An Invasion-Factor Framework, Stephen L. Young, David R. Clements, Antonio Ditommaso
Climate Dynamics, Invader Fitness, And Ecosystem Resistance In An Invasion-Factor Framework, Stephen L. Young, David R. Clements, Antonio Ditommaso
West Central Research and Extension Center, North Platte
As researchers and land managers increasingly seek to understand plant invasions and the external (climate) and internal (plant genetics) conditions that govern the process, new insight is helping to answer the elusive question of what makes some invasions successful and others not. Plant invasion success or failure is based on a combination of evolutionary and ecological processes. Abiotic (e.g., climate) and biotic (e.g., plant competition) conditions in the environment and plant genetics (e.g., fitness) combine in either decreasing or increasing invasion, yet it has proven challenging to know exactly which of these conditions leads to success for a given species, …
Cultivating Ecological Literacy And Rethinking Our Connections To Nature, Sean Fretwell
Cultivating Ecological Literacy And Rethinking Our Connections To Nature, Sean Fretwell
Electronic Theses and Dissertations
In this dissertation I explore the complex, often contested, relationships between humankind and nature. I consider the changing state of these relationships as they are influenced by factors rooted in science, technology, and economics. I also examine these relationships as they relate to human activities with agriculture. Considering the present state of environmental crisis and the abundance of evidence indicating the deleterious activities of humankind as primary causes for the many global calamities, I argue for revising industrially-driven ideologies; particularly those driven by the economic paradigm of capitalism and self-interest. Additionally, I submit that a return to kinship with nature …
Abejas Silvestres (Himenóptera: Apoidea) En La Neblina: Análisis De La Diversidad, Interacciones, Y Potencial Para Miel En Un Remanente De Bosque Nublado, Jen Hayes
Independent Study Project (ISP) Collection
Las abejas (Himenóptera: Apoidea) se encuentran en casi cada una de las bioregiones en el mundo. Su composición es muy diversa en los neotrópicos. Las abejas silvestres (no-Apis) representan casi el 90% de las especies de abejas en todo el mundo (Parra, 2005). Los objetivos principales de este estudio fueron realizar un inventario de las especies de abejas al final de la estación seca, observar sus interacciones intra-específicas, y determinar el potencial de producción de miel medicinal de las abejas sin aguijón (Apidae: Meliponini). El estudio fue realizado en la Reserva Inti Llacta, un remanente de bosque nublado …
Insomniac Of The Soil: A Collection Of Poetry And Essays, Sarah E. Golibart
Insomniac Of The Soil: A Collection Of Poetry And Essays, Sarah E. Golibart
Senior Honors Projects, 2010-2019
“Insomniac of the Soil” is a homage to a landscape that has deeply informed Sarah Golibart's life and her artistic voice – the tidewater flatlands of Virginia’s Chesapeake Bay peninsula where her family lives and where Golibart has worked on farms since high school. Both her poems and essays are earthy, imagistic, and grounded – quite literally – in the soil as well as in a sensibility of ecological ethics and sustainability. “Insomniac of the Soil” is also a love song to the fervent and fallow cycles of the soil.
Population Genetics, Distributions And Phenology Of Bombus Latreille, 1802 And Xylocopa Latreille, 1802 (Hymenoptera: Apidae), Amber Dawn Tripodi
Population Genetics, Distributions And Phenology Of Bombus Latreille, 1802 And Xylocopa Latreille, 1802 (Hymenoptera: Apidae), Amber Dawn Tripodi
Graduate Theses and Dissertations
This work addresses multiple knowledge gaps in bee ecology, population health and phylogeography in order to provide insights into the changing distributions of native bees. A comparison of Arkansas bumble bee records mirrors range-wide surveys, with records of stable species (Bombus bimaculatus Cresson, 1863 and B. impatiens Cresson, 1863) increasing three-fold, and records of the declining B. pensylvanicus (DeGeer, 1773) dropping to 60% of historical levels. However, nationally-recommended conservation-genetics tools did not mirror these results on a regional level. Stable and declining species had equivalent genetic diversity in samples from Arkansas and Tennessee (HS range: 0.46-0.63). Diploid males, …
Connecting Through Consilience: Ecology, Society, Culture And Technology, Ruth Mirams, Alexander Hayes
Connecting Through Consilience: Ecology, Society, Culture And Technology, Ruth Mirams, Alexander Hayes
Alexander Hayes Mr.
Amongst linguistic, cultural and geographic diversity, humanity is characterised by inquisitiveness, communication and a deep desire to connect with each other. Despite our advanced intelligence and technological capacity, we are creatures of nature - a species which occupies a habitat, depends on consumable resources and fragile in many ways. As a species, we currently face challenges including overpopulation, diminishing resources and habitat degradation. In essence, we are exhausting the resources we depend on. [1] Resource depletion, disruption, famine, growth and sustainability are all observable in other species and natural systems. Human societies and systems can be described through the same …
Ecology, Toxicity, And Hydrolytic Activities Of Bacillus Thuringiensis In Forests, Fouad Al-Momani, Maher Obeidat
Ecology, Toxicity, And Hydrolytic Activities Of Bacillus Thuringiensis In Forests, Fouad Al-Momani, Maher Obeidat
Turkish Journal of Agriculture and Forestry
The investigation of Bacillus thuringiensis (Bt) in 16 forest soil samples from Ajloun, northern Jordan, involved the isolation of 23 isolates toxic to the third instar dipteran larvae of Drosophila melanogaster and 7 isolates toxic to the third instar lepidopteran larvae of Ephestia kuehniella. The highest viable count of Bt was found in Ebeen forest soils (14.24 × 10^7 CFU g^{-1}), and the lowest viable count was found in Rasoun forest soils. The lethal concentration (LC_{50}) of Bt isolates indicated a variation in their toxicity to D. melanogaster and E. kuehniella larvae, with lower LC_{50} values for D. melanogaster suggesting …
Biology And Ecology Of Glyphosate-Resistant Giant Ragweed, Kabelo Segobye
Biology And Ecology Of Glyphosate-Resistant Giant Ragweed, Kabelo Segobye
Open Access Theses
Giant ragweed (Ambrosia trifida L.) is a competitive annual plant found in disturbed landscapes and is the most troublesome weed in Indiana and the US Corn Belt. It is one of the most common and problematic weeds in corn and soybean production. The introduction of herbicide glyphosate, N-(phosphonomethyl) glycine in early 1970's provided farmers with a better and low-cost tool to control weeds. The use of glyphosate drastically increased after the development of glyphosate resistant agronomic crops in 1996 and was use as a post-emergence selective herbicide. This led to overreliance and repeated use of glyphosate for weed control especially …
Uses Of Wild Plants In Ndumba, Eastern Highlands Province, Terence Hays
Uses Of Wild Plants In Ndumba, Eastern Highlands Province, Terence Hays
Terence Hays
For Papua New Guineans,l as well as for those who wish to understand them better, traiditional knowledge of the local natural environment is a priceless resource. In the face of increasing commitments to a cash economy, however, many communities are rapidly losing their awareness and appreciation of the rich animal and plant worlds which are immediately available to them. As Powell has recently observed (1976), the recorded information regarding traditional plant knowledge and uses has tended to be widely-scattered in the literature and relatively difficult to access, especially for those who stand to benefit the most from it. A recent …
The Management Of Feral Pig Socio-Ecological Systems In Far North Queensland, Australia, Gabriela Shuster
The Management Of Feral Pig Socio-Ecological Systems In Far North Queensland, Australia, Gabriela Shuster
Antioch University Full-Text Dissertations & Theses
The development of management programs for socio-ecological systems that include multiple stakeholders is a complex process and requires careful evaluation and planning. This is particularly a challenge in the presence of intractable conflict. The feral pig (Sus scrofa) in Australia is part of one such socio-ecological system. There is a large and heterogeneous group of stakeholders interested in pig management. Pigs have diverse effects on wildlife and plant ecology, economic, health, and social sectors. This study used the feral pig management system as a vehicle to examine intractable conflict in socio-ecological systems. The purpose of the study was …
Gunnison Sage-Grouse Winter And Summer Ecology In San Juan County, Utah, Sharon Ward
Gunnison Sage-Grouse Winter And Summer Ecology In San Juan County, Utah, Sharon Ward
All Current Publications
Thesis Report: Gunnison sage-grouse winter and summer ecology in San Juan County.
Aggiecology- Usu Thinks Green, Utah State University
Aggiecology- Usu Thinks Green, Utah State University
Agriculture
No abstract provided.
The Effect Of Recreational Fishing On Targeted Fishes And Trophic Structure, In A Coral Reef Marine Park, Mark B. Westera
The Effect Of Recreational Fishing On Targeted Fishes And Trophic Structure, In A Coral Reef Marine Park, Mark B. Westera
Theses: Doctorates and Masters
Recreational line fishing is highly targeted at predatory fishes, making them vulnerable to overfishing. These same fishes play a role in trophic structure by regulating prey species. Despite increasing numbers of fishers, few studies have investigated the potential effects of recreational fishing on fish populations and subsequent trophic effects. This project investigated whether there were differences in fishes and benthos between unfished and recreationally fished areas, and whether the removal of targeted fishes influenced trophic structure. The study was conducted at the Ningaloo Marine Park, Western Australia, which had Sanctuary (no-take) and Recreation {recreationally fished) Zones. Data were collected from …