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Articles 1 - 30 of 37
Full-Text Articles in Life Sciences
Differences In Temperature Responses Of Achene Types In Centaurea Melitensis, Kandee L. Bain
Differences In Temperature Responses Of Achene Types In Centaurea Melitensis, Kandee L. Bain
LUX: A Journal of Transdisciplinary Writing and Research from Claremont Graduate University
Southern California has a Mediterranean climate with wet winters and hot dry summers. This type of environment is associated with irregular temperature patterns and rainfall, which can be unpredictable. Unpredictable environments, can threaten the germination and survival of plants like Centaurea melitensis. To ensure germination and survival under unpredictable environmental conditions, some plants may develop characteristic structures like cleistogamous flower heads, and in some cases they will develop heteromorphic achenes. Morphological differences between peripheral and center achenes may indicate variable responses to temperature. Additionally, unpredictable environmental conditions may lead to differences in the number of peripheral to center achenes …
The Affect Of Low Tide On The Digestion Of Balanus Glandula, The Acorn Barnacle., Jesse Osborn
The Affect Of Low Tide On The Digestion Of Balanus Glandula, The Acorn Barnacle., Jesse Osborn
Scripps Senior Theses
The rocky intertidal zone, experiencing fully marine and fully terrestrial conditions, has become increasingly investigated as a model ecosystem for studying the future implications of climate change. The barnacle, Balanus glandula, a common rocky intertidal inhabitant, plays an important role as a key prey item for many organisms. Low tide can be particularly challenging for barnacles as they are marine organisms subjected to the abiotic conditions of a terrestrial environment. The most stressful of these are increased temperature and decreased oxygen availability. This study aimed to investigate how low tide impacts the energy budget, specifically the digestion, of B. …
A New Commons: Considering Community-Based Co-Management For Sustainable Fisheries, Charlotte L. Dohrn
A New Commons: Considering Community-Based Co-Management For Sustainable Fisheries, Charlotte L. Dohrn
Pomona Senior Theses
Commercial fisheries on the West Coast are traditionally managed under large-scale management and conservation plans implemented by state and federal agencies. This scale of management can present obstacles for fishing communities. This thesis examines emerging cases of attempts to define and implement sustainable management of commercial fisheries under a community-based co-management model. In Port Orford, Sitka, San Diego and Santa Barbara, preliminary community-based co-management models are enabling fishing communities to pursue social sustainability through preserving access, participating in local science, and direct marketing for fish products. These communities are actively reshaping traditional models of conceptualizing and managing common-pool resources like …
A Guide To The Pomona College Organic Farm: An Introduction To The Farm’S History And Basic Gardening Skills And Techniques, Adam J. Long
A Guide To The Pomona College Organic Farm: An Introduction To The Farm’S History And Basic Gardening Skills And Techniques, Adam J. Long
Pomona Senior Theses
It was almost four years ago when I first visited the Pomona College Organic Farm and since then I have learned everything from the basics of gardening to the complex steps required to organize students for events and activities. As I learned more and saw so many students come and go, I saw a need for written documentation that would allow future generations of students to benefit from the skills that my peers and I have learned in our time at the Farm. The value of the Farm is grounded in having a vibrant physical space, and right now the …
Food Security On Maui: Reinventing Agriculture In The Aloha State, Jade Silver
Food Security On Maui: Reinventing Agriculture In The Aloha State, Jade Silver
Scripps Senior Theses
This thesis focuses on the past, present, and future of food sustainability on Maui. It begins by explaining ancient Hawaiian agriculture and how this complex system of agriculture was deeply rooted in the customs and traditions of the Hawaiian people. The second section explores how this sustainable agricultural system changed after the arrival of Captain Cook in 1778. After western settlement, land that was once a communal resource became privatized. As land ownership shifted, the traditional subsistence agricultural system of Hawai’i began to change. Export crops such as sugar cane and pineapple became more widespread. As these crops shifted the …
The Stories Of Environmental Ethicists In Word And Image, Camille Robins
The Stories Of Environmental Ethicists In Word And Image, Camille Robins
Scripps Senior Theses
The Stories of Environmental Ethicists in Word and Image captures the spirit of three local people: John B. Cobb, Jr., Rosemary Radford Ruether, and Dean Freudenberger. As teachers, writers, activists, and members of the progressive retirement community Pilgrim Place, they’ve had a significant influence on the global environmental movement. The photographs and small essays in this project highlight who they are and what they’ve done, and how they continue to shape contemporary intellectual discourse. An analysis of how portrait photographers use images to tell stories and how they incorporate text in their photographic collections to create fuller, more robust pictures …
School Gardens: Reconnecting Children With Nature And Food, Alyssa M. Boyle
School Gardens: Reconnecting Children With Nature And Food, Alyssa M. Boyle
Scripps Senior Theses
This thesis discusses the importance of school gardens. First, two current environmental and societal problems are highlighted: the industrialized food system and what Richard Louv has termed, "Nature Deficit Disorder," in children. School gardens are then presented as an effective tool that can address and remedy such issues. Lastly, a how-to manual for implementing such projects in schools is provided as well as a few sample lesson plans to be used in conjunction with the garden in each subject across the curriculum.
Cultivating Resistance: Food Justice In The Criminal Justice System, Caitlin M. Watkins
Cultivating Resistance: Food Justice In The Criminal Justice System, Caitlin M. Watkins
Pitzer Senior Theses
This Senior Thesis in Environmental Analysis seeks to explore the ways in which certain food-oriented programs for incarcerated women and women on parole critically resist the Prison Industrial Complex and the Industrial Food System by securing social and ecological equity through the acquisition of food justice. It focuses on three case studies: the Crossroads’ Meatless Mondays program, Fallen Fruit from Rising Women: A Crossroads Social Enterprise, and Cultivating Dreams Prison Garden Project: An Organic Garden for Women in Prison. Each project utilizes food as a tool to build community, provide valuable skill sets of cooking and gardening, and educate women …
The Unstable Ground Of Low Hierarchies, Joshua Dinsmore
The Unstable Ground Of Low Hierarchies, Joshua Dinsmore
The STEAM Journal
Broad Vision is a collaborative project between the Sciences and Arts. It involves students and lecturers from six different departments, across three schools at the University of Westminster, London, UK. In the first year of the project we worked with the microscope as the locus for our interconnections.
The Emerald Ash Borer, Emily Bryant
The Emerald Ash Borer, Emily Bryant
The STEAM Journal
An Emerald Ash Borer made from recycled natural materials to create sustainable art.
Connecting The Contradictory With Science Art And The Aid Of A Caption, Carel P. Brest Van Kempen, Darryl Wheye
Connecting The Contradictory With Science Art And The Aid Of A Caption, Carel P. Brest Van Kempen, Darryl Wheye
The STEAM Journal
When the disciplines of science and art intertwine to reveal a truth then words and images are suited to telling different parts, and reveal the whole story most effectively when working in tandem. Decoding the underlying science within a work of art through a caption does not diminish its value as art, but when we fail to decode the science we miss entry into a narrative.
Keeping Abreast With Liberal Arts And Science Through Steam, Tanya Rivas, Gregory Knotts
Keeping Abreast With Liberal Arts And Science Through Steam, Tanya Rivas, Gregory Knotts
The STEAM Journal
The integrated unit on breast cancer described here includes biological science and visual art standards and was targeted at high school juniors and seniors. The goal was to make a potentially controversial and taboo subject relatable through an art-science approach
Broad Vision: The Art & Science Of Looking, Heather Barnett, John R. A. Smith
Broad Vision: The Art & Science Of Looking, Heather Barnett, John R. A. Smith
The STEAM Journal
Undergraduate students and academic staff from diverse disciplines in the arts and sciences investigated questions of mediated vision through a year-long interdisciplinary research project at the University of Westminster, London, United Kingdom. The Broad Vision project explored the perception and interpretation of microscopic worlds, and investigated the benefits and challenges of working across disciplinary divides in a university setting. This article describes the three-phase model for interdisciplinary learning and research developed through the project, providing a valuable case study for inquiry based art/science education.
Towards A “Cloud Curriculum” In Art And Science?, Roger Malina
Towards A “Cloud Curriculum” In Art And Science?, Roger Malina
The STEAM Journal
Recently an email hit my desk from Paul Thomas in Australia with a proposal to work together on a “Cloud Curriculum for Art and Science”. I immediately agreed to collaborate. I don’t yet have a clue of what a cloud curriculum is, but what I do know is that we are ‘backing into the future’ in educational institutions and we desperately need a ‘cloud curriculum.’ We need to look over the ten year horizon. And in the emerging art-science field I doubt that the usual approach to curriculum development will work.
A Distributed Intelligence Approach To Multidisciplinarity: Encouraging Divergent Thinking In Complex Science Issues In Society., Jarod Kawasaki, Dai Toyofuku
A Distributed Intelligence Approach To Multidisciplinarity: Encouraging Divergent Thinking In Complex Science Issues In Society., Jarod Kawasaki, Dai Toyofuku
The STEAM Journal
The scientific issues that face society today are increasingly complex, open-ended and tentative (Sadler, 2004). Finding solutions to these issues, not only requires an understanding of the science, but also, concurrently dealing with political, social, and economic dimensions that exist (Hodson, 2003). For example, 40 years after the first congressional hearing on climate change held by Al Gore in 1976, the 2012 Intergovernmental Panel on Climate Change (IPCC) report states that climate change is still getting worse, despite efforts by governments, businesses, social actors such as Non-Government Organizations, and scientists. With the top minds in the world, across all disciplines, …
A Letter To The Steam Journal Readers, Deborah Freund
A Letter To The Steam Journal Readers, Deborah Freund
The STEAM Journal
A letter to the readers from the President of Claremont Graduate University, President Deborah Freund, welcoming the inaugural issue of 'The STEAM Journal'.
Three Poems: The Lorenz Transformations, Rotating The Strange Attractor To Find The Principal Components, The Sieve Of Eratosthenes, Robin Chapman
Three Poems: The Lorenz Transformations, Rotating The Strange Attractor To Find The Principal Components, The Sieve Of Eratosthenes, Robin Chapman
Journal of Humanistic Mathematics
No abstract provided.
Species Status Of Sclerocactus Brevispinus, S. Wetlandicus, And S. Glaucus: Inferences From Morphology, Chloroplast Dna Sequences, And Aflp Markers, J. Mark Porter, Jennifer Cruse-Sanders, Linda Prince, Robert Lauri
Species Status Of Sclerocactus Brevispinus, S. Wetlandicus, And S. Glaucus: Inferences From Morphology, Chloroplast Dna Sequences, And Aflp Markers, J. Mark Porter, Jennifer Cruse-Sanders, Linda Prince, Robert Lauri
Aliso: A Journal of Systematic and Floristic Botany
We examine patterns of variation in 12 continuous morphological traits, chloroplast DNA sequences from 10 intergenic spacer regions (petA-psbJ, psbk-trnS, psbM-trnD, rpob-trnC, trnC-trnD, trnGCU-trnG2S, trnFM-trnUGA, atpF-atpH, trnT-trnD, trnQ-psbk), atpF, and rpl16, and Amplified Fragment Length Polymorphism (AFLP) genetic markers in Sclerocactus glaucus sensu lato (= S. brevispinus, S. glaucus, and S. wetlandicus), a complex that historically has been considered conspecific and afforded protection …
Kalinia, A New North American Genus For A Species Long Misplaced In Eragrostis (Poaceae, Chloridoideae), Hester L. Bell, J. Travis Columbus, Amanda L. Ingram
Kalinia, A New North American Genus For A Species Long Misplaced In Eragrostis (Poaceae, Chloridoideae), Hester L. Bell, J. Travis Columbus, Amanda L. Ingram
Aliso: A Journal of Systematic and Floristic Botany
Eragrostis obtusiflora (Poaceae, Chloridoideae), a species distributed from the southwestern United States to central Mexico, has long been recognized for exhibiting morphological and anatomical features atypical of Eragrostis. Phylogenetic analyses of nuclear internal transcribed spacer sequences and plastid sequences demonstrate that E. obtusiflora should be excluded from Eragrostis (Eragrostideae) and instead be placed in Cynodonteae, although its position within this tribe was unresolved. Additional data, including anatomical and micromorphological characters, suggest a close relationship with Distichlis. However, differences in spikelet and rhizome characters prevent its inclusion in Distichlis. Therefore, the species is transferred to a newly described …
A New Species Of Linanthus (Polemoniaceae) From San Bernardino County, California, Naomi S. Fraga, Duncan S. Bell
A New Species Of Linanthus (Polemoniaceae) From San Bernardino County, California, Naomi S. Fraga, Duncan S. Bell
Aliso: A Journal of Systematic and Floristic Botany
Linanthus bernardinus is described as new from San Bernardino County, California. It is morphologically similar to L. killipii and L. orcuttii subsp. pacificus but differs from plants of these taxa in height, corolla length, seed morphology, and habitat. Linanthus bernardinus can be found growing in vernally moist areas within Joshua tree woodland, often in shallow depressions, or on gentle slopes, in decomposed granite sand that is surrounded by large granite boulder fields.
Sequoiadendron Giganteum (Cupressaceae) At Lake Fulmor, Riverside County, California, Rudolf Schmid, Mena Schmid
Sequoiadendron Giganteum (Cupressaceae) At Lake Fulmor, Riverside County, California, Rudolf Schmid, Mena Schmid
Aliso: A Journal of Systematic and Floristic Botany
A GPS census made on 19 June 2012 of the Lake Fulmor area, northwestern San Jacinto Mountains, Riverside County, California, revealed seven trees of the Sierra Nevada endemic Sequoiadendron giganteum (Cupressaceae). The trees occur in a 234-meter-long narrow strip along the northwestern side of the lake. The population appears to be naturalizing. The largest tree (45 cm DBH, about 20 m tall), planted in 1980, is reproductively mature. Its six offspring to the northeast and southwest are 3–5 m tall and do not presently bear cones.
Uncle Sam’S Badge: Identity And Representation In The Usda Forest Service, 1905–2013, Char Miller
Uncle Sam’S Badge: Identity And Representation In The Usda Forest Service, 1905–2013, Char Miller
Pomona Faculty Publications and Research
Howard Abbey could recall the exact moment when he learned that he had passed the forest ranger’s examination for the newly established USDA Forest Service (USFS). In the early morning of Aug. 1, 1905, while he was managing a team of horses pulling a mowing machine on the McIntosh Ranch in the northern Sierra Nevada Mountains, Allen Ray Powers, a Forest Assistant on the Plumas Forest Reserve, rode up and “informed me that I was wanted at the Forest Supervisor’s office in Quincy.” Abbey handed over the reins to his boss and walked the 2 miles to town where he …
Changes In Cell Morphology And The Cellular Localization Of Protein Kinase Dsk1 In Schizosaccharomyces Pombe In Response To Butylated Hydroxyanisole, Jacqueline T. Humphries
Changes In Cell Morphology And The Cellular Localization Of Protein Kinase Dsk1 In Schizosaccharomyces Pombe In Response To Butylated Hydroxyanisole, Jacqueline T. Humphries
Scripps Senior Theses
Dsk1 is the Schizosaccharomyces pombe functional homolog of human SRPK1, an SR protein kinase that regulates localization and function of SR protein splicing factors involved in transcription, alternative splicing, and mRNA export. It has been shown that a Dsk1 deletion strain of S. pombe is sensitive to exposure to butylated hydroxyanisole (BHA), a phenol derivative commonly used as a food preservative. Little is known about how BHA interacts with cells on a functional level, although it has been shown to be cytotoxic and tumorigenic. The aims of this thesis are to study the effect of BHA on eukaryotic cells and …
Dehydration In Southern Toads (Anaxyrus Terrestris): Metabolic Costs And Effects Of Temperature Selection, Claire E. Forster
Dehydration In Southern Toads (Anaxyrus Terrestris): Metabolic Costs And Effects Of Temperature Selection, Claire E. Forster
Scripps Senior Theses
Southern toads (Anaxyrus terrestris) are ectothermic terrestrial amphibians. As such they are sensitive to thermal and hydric variability. The interactive effect of hydration state and body temperature is not well understood. The aim of this study is to determine if the costs of dehydration vary at different temperatures and if so, whether toads will select different temperatures to minimize these costs. Costs of dehydration were evaluated by measuring metabolic rate at 100% and 85% hydration state, at 30 and 20 oC. Temperature selection of toads at 100% and 85% hydration state was measured using a thermal gradient. …
Effect Of Hinge Region Phosphorylation On The Localization Of Thp1 In Tetrahymena Thermophila, Emily Bulley, Emily Wiley
Effect Of Hinge Region Phosphorylation On The Localization Of Thp1 In Tetrahymena Thermophila, Emily Bulley, Emily Wiley
Scripps Senior Theses
Within the cell nucleus, there are regions of highly condensed, transcriptionally silent chromatin called heterochromatin. Heterochromatin plays an important role in both chromosomal stability and gene regulation within the cell. Heterochromatin assembly is mediated by Heterochromatin Protein 1 (HP1) binding to epigenetically marked histone tails, most notably methylated H3K9. HP1 is post-translationally phosphorylated at serine and threonine residues, and this phosphorylation has been shown to increase HP1’s binding affinity for methylated H3K9 and heterochromatin formation. To study the effect of phosphorylation on heterochromatin assembly and HP1 localization within the nucleus, the unicellular protozoan Tetrahymena thermophila was used. Tetrahymena is an …
Social Aggregation In Pea Aphids: Experiment And Random Walk Modeling, Christa Nilsen, John Paige, Olivia Warner, Benjamin Mayhew, Ryan Sutley, Matthew Lam '15, Andrew J. Bernoff, Chad M. Topaz
Social Aggregation In Pea Aphids: Experiment And Random Walk Modeling, Christa Nilsen, John Paige, Olivia Warner, Benjamin Mayhew, Ryan Sutley, Matthew Lam '15, Andrew J. Bernoff, Chad M. Topaz
All HMC Faculty Publications and Research
From bird flocks to fish schools and ungulate herds to insect swarms, social biological aggregations are found across the natural world. An ongoing challenge in the mathematical modeling of aggregations is to strengthen the connection between models and biological data by quantifying the rules that individuals follow. We model aggregation of the pea aphid, Acyrthosiphon pisum. Specifically, we conduct experiments to track the motion of aphids walking in a featureless circular arena in order to deduce individual-level rules. We observe that each aphid transitions stochastically between a moving and a stationary state. Moving aphids follow a correlated random walk. …
Sinularia Leptoclados (Ehrenberg, 1834) (Cnidaria: Octocorallia) Re-Examined, Catherine S. Mcfadden, Leen P. Van Ofwegen, Yehuda Benayahu
Sinularia Leptoclados (Ehrenberg, 1834) (Cnidaria: Octocorallia) Re-Examined, Catherine S. Mcfadden, Leen P. Van Ofwegen, Yehuda Benayahu
All HMC Faculty Publications and Research
Sinularia leptoclados (Ehrenberg, 1834) is re-described. Sinularia leptoclados var. gonatodes Kolonko, 1926 is synonymized with S. maxima Verseveldt, 1977. Two new species of Sinularia with digitiform lobules, leptoclados-type surface clubs and unbranched interior spindles, are described. An updated maximum likelihood tree of Sinularia species with leptoclados-type clubs (clade 5C) based on two mitochondrial genes (mtMutS, COI) and a nuclear gene (28S rDNA) is presented.
Molecular Phylogenetic Evidence Supports A New Family Of Octocorals And A New Genus Of Alcyoniidae (Octocorallia: Alcyonacea), Catherine S. Mcfadden, Leen P. Van Ofwegen
Molecular Phylogenetic Evidence Supports A New Family Of Octocorals And A New Genus Of Alcyoniidae (Octocorallia: Alcyonacea), Catherine S. Mcfadden, Leen P. Van Ofwegen
All HMC Faculty Publications and Research
Molecular phylogenetic evidence indicates that the octocoral family Alcyoniidae is highly polyphyletic, with genera distributed across Octocorallia in more than 10 separate clades. Most alcyoniid taxa belong to the large and poorly resolved Holaxonia–Alcyoniina clade of octocorals, but members of at least four genera of Alcyoniidae fall outside of that group. As a first step towards revision of the family, we describe a new genus, Parasphaerasclera gen. n., and family, Parasphaerascleridae fam. n., of Alcyonacea to accommodate species of Eleutherobia Pütter, 1900 and Alcyonium Linnaeus, 1758 that have digitiform to digitate or lobate growth forms, completely lack sclerites …