Open Access. Powered by Scholars. Published by Universities.®
Ecology and Evolutionary Biology Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Plant Sciences (103)
- Botany (95)
- Biology (30)
- Social and Behavioral Sciences (24)
- Physical Sciences and Mathematics (22)
-
- Terrestrial and Aquatic Ecology (17)
- Evolution (16)
- Other Ecology and Evolutionary Biology (13)
- Arts and Humanities (12)
- Population Biology (12)
- Animal Sciences (11)
- Behavior and Ethology (11)
- Biodiversity (11)
- Environmental Sciences (11)
- Education (9)
- Geography (7)
- Earth Sciences (6)
- Environmental Studies (6)
- Genetics and Genomics (6)
- Marine Biology (6)
- Psychology (6)
- Agriculture (5)
- Applied Mathematics (5)
- Art and Design (5)
- Biochemistry, Biophysics, and Structural Biology (5)
- Developmental Psychology (5)
- Plant Biology (5)
- Forest Sciences (4)
- Keyword
-
- Poaceae (20)
- Phylogeny (15)
- California (11)
- Conservation (8)
- Morphology (8)
-
- Taxonomy (8)
- Cyperaceae (7)
- Evolution (7)
- ITS (7)
- Biogeography (6)
- Development (6)
- Ecology (6)
- Classification (5)
- Systematics (5)
- Bats (4)
- Festuca (4)
- Great Basin (4)
- NdhF (4)
- Nomenclature (4)
- Panicoideae (4)
- Phylogenetics (4)
- RbcL (4)
- Robert J. Bernard Biological Field Station (4)
- Vegetation (4)
- Andropogoneae (3)
- Bromeliaceae (3)
- Cladistics (3)
- Climate Change (3)
- Evolutionary psychology (3)
- Floristics (3)
- Publication Year
- Publication
-
- Aliso: A Journal of Systematic and Floristic Botany (96)
- Scripps Senior Theses (30)
- Pomona Senior Theses (9)
- WM Keck Science Faculty Papers (9)
- All HMC Faculty Publications and Research (8)
-
- Pitzer Faculty Publications and Research (8)
- The Transdisciplinary STEAM+ Journal (6)
- CMC Senior Theses (5)
- Pitzer Senior Theses (5)
- HMC Senior Theses (3)
- CODEE Journal (2)
- Journal of Humanistic Mathematics (2)
- CGU Theses & Dissertations (1)
- Claremont-UC Undergraduate Research Conference on the European Union (1)
- Pomona Faculty Publications and Research (1)
- Publication Type
Articles 61 - 90 of 186
Full-Text Articles in Ecology and Evolutionary Biology
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 …
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. …
The Emerald Ash Borer, Emily Bryant
The Emerald Ash Borer, Emily Bryant
The Transdisciplinary STEAM+ Journal
An Emerald Ash Borer made from recycled natural materials to create sustainable art.
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 Transdisciplinary 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, …
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.
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.
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.
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 …
Family Matters: An Analysis Of Genetic Relatedness Of Tetraclita Rubescens (The Pink Volcano Barnacle) Over Several Spatial Scales At Monterey And Bodega Bay, California, Kelly N. Chang
Scripps Senior Theses
Inbreeding involves the mating of closely related individuals at a higher frequency than at random; this can decrease the average fitness of populations and individuals by reducing the presence of heterozygotes and augmenting the expression of deleterious genes. Since marine invertebrates exhibit widespread dispersal, their potential for inbreeding is often disregarded. The adult sessile state of barnacles creates the potential for inbreeding as a result of necessary copulation between neighboring individuals. Depending on the degree of mixing that occurs during dispersal, closely related individuals or siblings may settle in close proximity, generating the possibility of kin aggregation and consequent inbreeding. …
Naturalization Of Sequoiadendron Giganteum (Cupressaceae) In Montane Southern California, Rudolf Schmid, Mena Schmid
Naturalization Of Sequoiadendron Giganteum (Cupressaceae) In Montane Southern California, Rudolf Schmid, Mena Schmid
Aliso: A Journal of Systematic and Floristic Botany
After the August 1974 fire in the upper Hall Canyon area on the southwestern flank of Black Mountain in the northwestern San Jacinto Mountains, Riverside County, California, the United States Forest Service revegetated the burn in the mixed-conifer forest with the Sierra Nevada endemic Sequoiadendron giganteum (Cupressaceae). On 1 May 2009 a GPS census starting at the head of Hall Canyon revealed both in the canyon and upslope beyond it at least 157 individuals in the vicinity of the Black Mountain Trail, plus an outlier 450 m distant near the summit. This species alien to southern California is regenerating prolifically …
Euphorbia (Subgen. Chamaesyce Sect. Anisophyllum) Jaegeri, A Shrubby New Species From The Deserts Of California, United States, Victor W. Steinmann, James M. André
Euphorbia (Subgen. Chamaesyce Sect. Anisophyllum) Jaegeri, A Shrubby New Species From The Deserts Of California, United States, Victor W. Steinmann, James M. André
Aliso: A Journal of Systematic and Floristic Botany
Euphorbia jaegeri (Euphorbiaceae), an endemic to southeastern California, United States, is described as new and illustrated with photographs. It is known from two general locations, one in the Orocopia Mountains (Riverside County) and the other in the Marble Mountains and adjacent Bristol Mountains (San Bernardino County). The habitat is desert scrub on rocky hillsides and along arroyos, primarily in rock crevices or gravelly soils, at elevations from approximately 600 to 850 m. The new species belongs to Euphorbia subgen. Chamaesyce sect. Anisophyllum. It is distinguished by the combination of a shrubby habit and involucral appendages that are deeply parted …
A Revision Of Erythranthe Montioides And Erythranthe Palmeri (Phrymaceae), With Descriptions Of Five New Species From California And Nevada, Usa, Naomi S. Fraga
A Revision Of Erythranthe Montioides And Erythranthe Palmeri (Phrymaceae), With Descriptions Of Five New Species From California And Nevada, Usa, Naomi S. Fraga
Aliso: A Journal of Systematic and Floristic Botany
The genus Erythranthe (Phrymaceae) continues to be a source of floristic novelty, especially in the American West, as evidenced by recent discoveries presented here. Two species in Erythranthe section Paradantha (E. montioides and E. palmeri) have long been a source of taxonomic confusion. Recent research reveals that a total of ten species have previously been treated as part of these two species. Here I present a revised taxonomy for E. montioides and E. palmeri including clarification of species circumscriptions (E. montioides, E. palmeri), recognition of three species that have previously been treated as synonyms …
Wood Anatomy Of Gnetales In A Functional, Ecological, And Evolutionary Context, Sherwin Carlquist
Wood Anatomy Of Gnetales In A Functional, Ecological, And Evolutionary Context, Sherwin Carlquist
Aliso: A Journal of Systematic and Floristic Botany
New scanning electron microscope (SEM) and light microscope data and illustrations are presented in order to compare hydraulic adaptations of non-gnetalean conifers and angiosperms to relevant wood features of Gnetales. Gnetales have essentially all of the adaptations of both groups, yet have not competed well, despite predating angiosperms in origin and radiation. Angiosperms may be advantaged more by life cycle abbreviation and by heterochronic possibilities than by wood features. Wood features of Gnetales that relate to conduction (torus-margo differentiation of tracheid pit membranes, distribution of tori within the wood, perforation plate simplification, growth rings, vesturing, helical thickenings, and axial parenchyma) …
Implications Of Land Development On Nomadic Pastoralism: Ecological Relaxation And Biosocial Diversity In Human Populations, Hannah R. Bradley
Implications Of Land Development On Nomadic Pastoralism: Ecological Relaxation And Biosocial Diversity In Human Populations, Hannah R. Bradley
Scripps Senior Theses
Nomadic pastoralism is an ancient subsistence strategy, historically balanced and in continuity with sedentary societies. Sedentarization of nomads occurs normally because of ecological disasters, economic opportunities, urbanization, and government policy. In this paper, I examine the effect of changing land use patterns on nomadic pastoral populations in Asia, Africa, and the Middle East, using biogeographic methodology to further explore the contemporary relationship between humans and their environments. Nomadic population information gleaned from diverse ethnographic studies, and GIS data on anthropogenic biome distributions, were used to calculate changes in nomadic population, area of developed land, and nomadic/sedentary population density over the …
The Effects Of Invasive Grasses On The Survival And Germination Of Native Forbs, Rachel A. King
The Effects Of Invasive Grasses On The Survival And Germination Of Native Forbs, Rachel A. King
Scripps Senior Theses
Invasive species are an increasingly severe conservation problem that can dramatically alter native plant communities. Although ecologists have proposed many mechanisms for the dominance of invasive species, superior competitive ability is one of the longest standing hypotheses. In winter annual plant communities, germination timing affects competition among plants. I hypothesized that grass invasion has changed the costs and benefits of early and late germination, and that species with flexible germination timing would compete better with invasives. Experiments at the Bernard Field Station in Claremont, CA and germinator trials in a controlled environment were used to examine the survivorship and germination …
Factors Influencing Web Tenure In A Tropical Spider And Comparison Between Forest And Non-Forest Habitats, Daniella R. Barraza
Factors Influencing Web Tenure In A Tropical Spider And Comparison Between Forest And Non-Forest Habitats, Daniella R. Barraza
Scripps Senior Theses
Webs are fundamental to the ecology of Nephila clavipes, the golden orb-weaver spider, because they serve as sites for prey capture, reproduction, competition, predation, and parasitism. In addition to the presence of the female N. clavipes, males and kleptoparasites reside on the web in varying numbers. Webs are also found in clusters with conspecific females. Web site selection and length of web tenure is a behavioral decision vital to the spider’s fitness and the ecology of her species. I conducted a field census to quantify these factors and analyze their influence on web tenure, compare web ecology between a forest …
Two Epiparasitic Species Of Phoradendron (Viscaceae) From Honduras: One New And For The Other A Range Extension And Host Determination, Delbert Wiens, Clyde L. Calvin
Two Epiparasitic Species Of Phoradendron (Viscaceae) From Honduras: One New And For The Other A Range Extension And Host Determination, Delbert Wiens, Clyde L. Calvin
Aliso: A Journal of Systematic and Floristic Botany
A new species of Phoradendron, Ph. mathiasenii, is described, and a range extension and host are given for Ph. tikalense. Both species are from Honduras and grow as epiparasites, i.e., mistletoes parasitizing other mistletoes. The parasitic host for both epiparasitic species of Phoradendron is Psittacanthus angustifolius (Loranthaceae), which in turn is parasitic on the terrestrial host, Pinus oocarpa, a common forest tree in the collection area. Although the two species of Phoradendron parasitize the same parasitic host and co-occur in the area, they are distinct morphologically. Many plants of Ph. mathiasenii were observed at several collection …
A New Variety Of Lomatium Ravenii (Apiaceae) From The Northern Great Basin And Adjacent Owyhee Region, Kimberly M. Carlson, Donald H. Mansfield, James F. Smith
A New Variety Of Lomatium Ravenii (Apiaceae) From The Northern Great Basin And Adjacent Owyhee Region, Kimberly M. Carlson, Donald H. Mansfield, James F. Smith
Aliso: A Journal of Systematic and Floristic Botany
Variability in the group of Lomatium species comprising L. nevadense, L. ravenii, and L. foeniculaceum has led to conflicting classification schemes. While some taxonomists have treated L. ravenii as a distinct species made up of all the populations from California, Nevada, Idaho, and Oregon, others considered L. ravenii to be nothing more than a morphological extreme of L. nevadense. We examined morphological and phylogenetic data from across the range of L. ravenii, concluding that variation in the species warrants varietal distinction. Non-metric multidimensional scaling analysis of 29 populations shows two distinct groups—one from the vicinity of …
Rediscovery Of Monotropastrum Sciaphilum (Andres) G.D.Wallace In China After 91 Years, Min Shen, Chang-Qin Zhang, Gary D. Wallace
Rediscovery Of Monotropastrum Sciaphilum (Andres) G.D.Wallace In China After 91 Years, Min Shen, Chang-Qin Zhang, Gary D. Wallace
Aliso: A Journal of Systematic and Floristic Botany
Monotropastrum sciaphilum (Ericaceae), a mycoheterotrophic member of subfamily Monotropoideae, was rediscovered at its type locality in Yunnan Province, China, 91 years after it was first collected. The type locality is the only locality from which it is known. Field observations in 2007–2010 indicated that inflorescences emerge from the soil between late April and early September. The restricted distribution of M. sciaphilum recommends its listing in the IUCN red book.
A Mathematician Weighs In On The Evolution Debate, Kris H. Green
A Mathematician Weighs In On The Evolution Debate, Kris H. Green
Journal of Humanistic Mathematics
There are a variety of reasons underlying the lack of public acceptance for the theory of evolution in the United States. An overlooked cause is related to problems with the mathematics curriculum in the K-12 setting. In this essay, we examine this relationship and propose changes to the mathematics curriculum that could improve mathematical thinking while also providing a basis for understanding theories, like evolution, that are poorly understood.
Analytic And Numerical Studies Of A Simple Model Of Attractive-Repulsive Swarms, Andrew S. Ronan
Analytic And Numerical Studies Of A Simple Model Of Attractive-Repulsive Swarms, Andrew S. Ronan
HMC Senior Theses
We study the equilibrium solutions of an integrodifferential equation used to model one-dimensional biological swarms. We assume that the motion of the swarm is governed by pairwise interactions, or a convolution in the continuous setting, and derive a continuous model from conservation laws. The steady-state solution found for the model is compactly supported and is shown to be an attractive equilibrium solution via linear perturbation theory. Numerical simulations support that the steady-state solution is attractive for all initial swarm distributions. Some initial results for the model in higher dimensions are also presented.
Phylogenetic Evaluation Of Series Delimitations In Section Palmata (Acer, Aceroideae, Sapindaceae) Based On Sequences Of Nuclear And Chloroplast Genes, Jianhua Li
Aliso: A Journal of Systematic and Floristic Botany
Acer section Palmata (Japanese maples) is the largest section within the genus; however, series delimitations within section Palmata have not been evaluated in a phylogenetic context. Both maximum parsimony and maximum likelihood analyses of DNA sequence data of nuclear rDNA ITS and chloroplast genes (ndhF, trnL-trnF, and psbA-trnH) from 23 species of Acer section Palmata show that traditional series do not form individual clades. Results from this study support the most recent taxonomic treatment of Acer that does not recognize any series in section Palmata. Nuclear and chloroplast phylogenies are significantly …
Wood Anatomy Of Family Salvadoraceae From The Indian Subcontinent With Special Reference To The Ultrastructure Of The Vessel Wall, Vishakha Saxena, Sangeeta Gupta
Wood Anatomy Of Family Salvadoraceae From The Indian Subcontinent With Special Reference To The Ultrastructure Of The Vessel Wall, Vishakha Saxena, Sangeeta Gupta
Aliso: A Journal of Systematic and Floristic Botany
The present study describes the wood microstructure of Azima tetracantha, Salvadora oleoides, and S. persica, the members of family Salvadoraceae represented in the Indian Subcontinent. An identification key based on wood anatomical features has been developed for the separation of the species. SEM studies revealed the presence of vesturing in intervessel pits of Salvadora.