scholarly journals Warm oceanographic anomalies and fishing pressure drive seabird nesting north

2015 ◽  
Vol 1 (5) ◽  
pp. e1400210 ◽  
Author(s):  
Enriqueta Velarde ◽  
Exequiel Ezcurra ◽  
Michael H. Horn ◽  
Robert T. Patton

Parallel studies of nesting colonies in Mexico and the United States show that Elegant Terns (Thalasseus elegans) have expanded from the Gulf of California Midriff Island Region into Southern California, but the expansion fluctuates from year to year. A strong inverse relationship between nesting pairs in three Southern California nesting areas [San Diego saltworks, Bolsa Chica Ecological Reserve, and Los Angeles Harbor (1991 to 2014)] and Isla Rasa in the Midriff (1980 to 2014) shows that terns migrate northward when confronting warm oceanographic anomalies (>1.0°C), which may decrease fish availability and hamper nesting success. Migration pulses are triggered by sea surface temperature anomalies localized in the Midriff and, secondarily, by reductions in the sardine population as a result of intensive fishing. This behavior is new; before year 2000, the terns stayed in the Midriff even when oceanographic conditions were adverse. Our results show that terns are responding dynamically to rapidly changing oceanographic conditions and fish availability by migrating 600 km northwest in search of more productive waters.

Experiment ◽  
2014 ◽  
Vol 20 (1) ◽  
pp. 229-259
Author(s):  
Oleg Minin

Charting Nicholas Remisoff’s artistic legacy during his California period, this essay explores his contributions to the cultural landscape of the state and emphasizes his work on live stage productions in San Francisco and Los Angeles in the early 1930s and 1940s. Delineating the critical reception of Remisoff’s work in opera, ballet and theatre in these cities, this essay also highlights the artist’s interactions and key collaborations with other Russian and European émigré artists and reflects on the nature of Remisoff’s particular affinity with Southern California.


2019 ◽  
Vol 4 (1) ◽  
pp. 149-166 ◽  
Author(s):  
Dianne M. Hammes Ganguly ◽  
Debra K. Schrader ◽  
Amy S. Martinez

IntroductionInvestigations of auditory brainstem implants (ABIs) in children started around 2012 in the United States. The team at the University of Southern California-Caruso Family Center for Childhood Communication began seeing children, implanted abroad, in 2006. ABIs are indicated for children who cannot benefit from cochlear implants (CIs). The habilitation and educational needs of children with ABIs versus CIs differ.PurposeThis document provides information professionals can use when implementing habilitation programs for children with ABIs.MethodThe University of Southern California-Caruso Family Center for Childhood Communication, as part of the Los Angeles Pediatric ABI team, is conducting an ABI safety and feasibility clinical trial. This article shares experiences from the viewpoint of a multidisciplinary team. The article provides background knowledge, an outcomes review, and considerations to guide ABI intervention.ResultsABIs and CIs differ in the acoustic information they provide. Outcome studies suggest progress is slow with ABIs but that children can develop some auditory or spoken language skills. The children require highly supportive learning experiences. Visual communication support remains important. The considerations outlined reflect the children's need for explicit instruction.ConclusionsWhen serving children with ABIs, therapists must apply their broad knowledge about working with children with hearing loss, tempering that knowledge, and recognizing that auditory access and progress differ with ABIs compared to CIs. Educational and program placement decisions may require unconventional thinking.


Author(s):  
Juan D. De Lara

This book uses Southern California to explore a series of questions about the relationship between globalization, race, space, and class. It begins with an analysis of how growing consumer demand, innovative retail business practices, and the infrastructure required to support global commodity chains made Southern California into the largest trade gateway in the United States. Warehouse work and the contentious spatial politics of inland Southern California’s logistic landscape provide the data to examine how the shifting ground of money and people intersected with local histories to reterritorialize race and capitalism at the turn of the twenty-first century. While global logistics innovations provided the impetus for capital and the state to transform Southern California’s economy, it also created pockets of resistance among labor, community, and environmental groups, who argued that commodity distribution exposed them to economic and environmental precarity. How people gave meaning to space and mobilized them to contest logistics space is at the crux of this project. The book is divided into three parts. The first part provides an introduction into the spatial politics of Southern California’s logistics regime by showing how the forces of global economic restructuring after the 1980s intersected with regional entrepreneurial actors to produce Los Angeles and inland Southern California as a space for logistics. I argue that logistics represents a major rearticulation of modern capitalist space. Part 2 examines how the flexible production and distribution systems that were critical to the expansion of global capitalism during the neoliberal age were responsible for creating social and economic precarity for logistics workers, many of whom were undocumented. The final part of the book shows how regional development policies and global restructuring combined with demographic change to reterritorialize Southern California’s geographies of race and class. The book concludes by showing how inland Southern California became a key site for the production of new Latinx geographies.


2020 ◽  
Vol 22 (Supplement_3) ◽  
pp. iii441-iii441
Author(s):  
Hung Tran

Abstract KEY MESSAGE Standardization of care for subspecialty patients require centralization and support across multi-disciplinary groups within the Kaiser Permanente medical group, which is a large health maintenance organization (HMO) in the United States. BACKGROUND Prior to the development of a Pediatric Neuro-Oncology program, Southern California Kaiser Permanente pediatric neuro-oncology patients were routinely referred to respective regional academic centers for consultation. The process was not standard across the region, resulting in additional costs and differences in treatment recommendations, potentially affecting outcomes. METHODS A Pediatric Neuro-Oncology program was established, July 2017, based at the Kaiser Permanente Los Angeles Medical Center (LAMC), consisting of pediatric neuro-oncology, pediatric neurosurgery, pediatric neuro-radiology, pediatric radiation oncology, and pediatric neuro-oncology case management. RESULTS A Pediatric Neuro-Oncology tumor board was established to meet on a bi-monthly basis. Pediatric neuro-oncology patients across the Southern California now have their magnetic resonance imaging (MRI) reviewed by the same pediatric neuro radiologists. Neuropathology is standardized and sent to Children’s Hospital Los Angeles and reviewed at the molecular neuropathology tumor board attended by the pediatric neuro-oncologist. Cases discussions regarding the patients include the regional pediatric neurosurgeons, the pediatric radiation oncologists, and the pediatric neuro-oncologist, and treatment plans are recommended and recorded by the case manager. CONCLUSIONS Centralization of care has allowed for more consistent and standard care across the Southern California Region, but requires support from multi-disciplinary groups.


Author(s):  
Mary Talusan

Filipino festivals (also “Philippine festivals”) in southern California are lively, dynamic events that draw multigenerational and multicultural crowds to enjoy food, partake in traditional games and crafts, buy Filipino pride gear, and watch a variety of acts that showcase the talent and creativity of Filipino Americans. Inclusive of those who identify as immigrant, U.S.-born, and transnational, Filipinos from across the region convene to express pride and promote visibility as an overlooked and marginalized ethnic group in the United States. The first public performances by Filipinos in the United States were in exhibits curated by colonial officials at the St. Louis World’s Fair in 1904 to justify colonization of the Philippines. Presented as an uncivilized people in need of American tutelage, this stereotyping of Filipinos as primitives motivated pensionados or students from the Philippines to represent themselves; they organized Rizal Day starting in 1905, which valorized national Philippine hero José Rizal, in order to highlight their identity as modern, educated people. New immigrants, who were mostly rural, single men from the northern Philippines, arrived in the 1930s and frequented taxi dance halls in which Filipino jazz musicians and dancers flourished. Yet the established Filipino community criticized these venues as places of vice that were lacking in family and traditional cultural values. Philippine folk dances were not prevalent among Filipino Americans until after the Philippine Bayanihan Folk Dance Company appeared on the Ed Sullivan Show in 1958. Due to their influence, Filipino American folk dance troupes were established across the nation, presenting Philippine cultures through stylistically diverse dances such as the Indigenous or Tribal suite, the Muslim or “Moro” suite, and the Maria Clara or Spanish-influenced suite. Folk dance performance became a hallmark of festivals such as the Philippine Folk Festival, which has been held annually in San Diego since 1979 (renamed the Philippine Cultural Arts Festival in 1996). In Los Angeles, the Festival of Philippine Arts and Culture began in 1992, attracting thousands from around the region. These large-scale public Filipino festivals in southern California offer opportunities to gain insight into the variety of ways in which Filipino Americans creatively express a range of experiences, interests, and concerns. While folk dance troupes and traditional music ensembles such as Spanish-influenced rondalla (plucked string instruments) are most visibly tied to representations of Philippine traditions, rappers, DJs, spoken word artists, hip-hop dance crews, R&B singers, and rock bands demonstrate Filipinos’ mastery of American popular forms. With origins in community celebrations since the early 1900s, Filipino festivals of the early 21st century reflect changes and continuities in California’s Filipino communities, which have adapted to internal dynamics, larger societal forces, and engagement with the homeland of the Philippines.


2016 ◽  
Vol 3 (4) ◽  
Author(s):  
Salvador Hernandez ◽  
Carmen A. Flores ◽  
Gracia M. Viana ◽  
Daniel R. Sanchez ◽  
Mahmoud I. Traina ◽  
...  

Abstract Trypanosoma cruzi usually infects humans via triatomine insects in Latin America. Vector-borne transmission in the United States is exceedingly rare. We describe (1) the first case of probable autochthonous transmission reported in California in more than 30 years and (2) the first ever reported case in the greater Los Angeles area.


Author(s):  
Wenjuan Zhang ◽  
Brian D Davis ◽  
Stephanie S Chen ◽  
Jorge M Sincuir Martinez ◽  
Jasmine T Plummer ◽  
...  

AbstractSince October 2020, novel strains of SARS-CoV-2 including B.1.1.7, have been identified to be of global significance from an infection and surveillance perspective. While this strain (B.1.1.7) may play an important role in increased COVID rates in the UK, there are still no reported strains to account for the spike of cases in Los Angeles (LA) and California as a whole, which currently has some of the highest absolute and per-capita COVID transmission rates in the country. From the early days of the pandemic when LA only had a single viral genome uploaded onto GISAID we have been at the forefront of generating and analyzing the SARS-CoV-2 sequencing data from the LA region. We report a novel strain emerging in Southern California. Most current cases in the catchment population in LA fall into two distinct subclades: 1) 20G (24% of total) is the predominant subclade currently in the United States 2) a relatively novel strain in clade 20C, CAL.20C strain (∼36% of total) is defined by five concurrent mutations. After an analysis of all of the publicly available data and a comparison to our recent sequences, we see a dramatic growth in the relative percentage of the CAL.20C strain beginning in November of 2020. The predominance of this strain coincides with the increased positivity rate seen in this region. Unlike 20G, this novel strain CAL.20C is defined by multiple mutations in the S protein, a characteristic it shares with both the UK and South African strains, both of which are of significant clinical and scientific interest


Plant Disease ◽  
2003 ◽  
Vol 87 (5) ◽  
pp. 600-600 ◽  
Author(s):  
F. P. Wong ◽  
W. Gelernter ◽  
L. Stowell ◽  
N. A. Tisserat

Kikuyugrass (Pennisetum clandestinum) is a warm-season grass and invasive weed in the landscape, but can be used for golf course fairways in southern California. In 1999, a decline of kikuyugrass was observed on golf courses in southern California beginning in late summer or early autumn. Symptoms included sunken, bleached patches of turf with individual plants having chlorotic foliage and reduced vigor. Roots and stolons were often covered with dark, ectotrophic fungi, and lobed hyphopodia were visible on the stolons. On colonized roots, the cortex was rotted, and the stele showed evidence of colonization by the fungus. In March 2002, a sample of kikuyugrass exhibiting decline symptoms was obtained from a golf course fairway in Los Angeles, CA. Sections of roots and stolons were surface sterilized for 60 s in a 0.3% sodium hypochlorite solution and placed on acidified water agar. Emerging colonies were transferred to potato dextrose agar (PDA). Isolates were characteristic of Gaeumannomyces spp. (2) with dark hyphae and curled colony edges. The rDNA internal transcribed spacer (ITS) regions of two isolates (HCC-5 and -6) were amplified by polymerase chain reaction (PCR) using universal fungal rDNA primers ITS 4 (5′-TCCTCCGCTTATTGATATGC-3′) and ITS 5 (5′-GGAAGTAAAAGTCG TAACAAGG-3′) (3). PCR products were sequenced and exhibited 99% sequence identity to G. graminis var. graminis (GenBank Accession No. 87685). These isolates were grown separately on autoclaved sand and cornmeal media (1) for 21 days at 25°C. Styrofoam cups were partially filled with autoclaved medium-coarse sand, and 10 g of inoculum was spread evenly in a layer on top. This layer was covered by an additional centimeter of autoclaved sand and 5 g of kikuyugrass seed (cv. ‘AZ-1’). Both isolates were tested separately using six replicate cups per isolate. Controls were prepared using only a 10 g layer of autoclaved sand and cornmeal. Cups were misted at 1 h intervals on a greenhouse bench maintained at 25°C. Seeds germinated and emerged after ≈10 days. In cups inoculated with isolate HCC-5 or -6, dark mycelia were evident on the coleoptiles of the emerging plants. Plants were removed and washed 21 days after planting. Inoculated plants were chlorotic and had reduced root and foliar growth compared to the controls. Coleoptiles, hypocotyls, and roots were covered with dark, ectotrophic fungi with lobed hyphopodia present on the hypocotyls. In colonized roots, cortical tissue was rotted with extensive colonization of the epidermis and penetration of the fungus into the root cortex. Sections of infected root tissue were surface disinfested, placed on acidified water agar, and the resulting colonies transferred to PDA. Isolates exhibited the same colony morphology and characteristics as those previously identified as G. graminis var. graminis. To our knowledge, this is the first report of this fungus as a pathogen of kikuyugrass. References: (1) M. J. C. Asher. Ann. Appl. Biol. 70:215, 1972. (2) P. C. Cunningham. Isolation and culture. Pages 103–123 in: Biology and Control of Take All. M. J. C. Asher and P. J. Shipton, eds. Academic Press, London, 1981. (3) T. J. White et al. Amplification and direct sequencing of fungal ribosomal RNA genes for phylogenetics. Pages 315–322 in: PCR Protocols: A Guide to Methods and Applications. M. A. Innis et al. eds. Academic Press, San Diego, CA, 1990.


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