scholarly journals Size Characteristics of Stones Ingested by Common Loons

The Condor ◽  
2001 ◽  
Vol 103 (1) ◽  
pp. 189-191
Author(s):  
J. Christian Franson ◽  
Scott P. Hansen ◽  
Mark A. Pokras and ◽  
Rose Miconi

Abstract Common Loon (Gavia immer) carcasses recovered in New England had more stones of greater combined mass in their stomachs than loons from the southeastern United States. Stones retained in sieves with mesh sizes between 4.75 and 8.00 mm accounted for the greatest percentage (by mass) of grit in loon stomachs. The median longest dimension of the largest single stone in each stomach was 12.5 mm in loons from New England and 10.7 mm in loons from the southeast (maximum = 23.1 mm and 16.8 mm, respectively). A recent national proposal to restrict the use of certain fishing weights in the United States called for a ban on lead fishing sinkers of 25.4 mm or less in any dimension. Our findings suggest it is unlikely that Common Loons would ingest lead fishing weights greater than 25.4 mm in any dimension, if such ingestion was solely the result of their search for replacement stones for their stomachs. However, this does not preclude the possibility that loons may ingest larger fishing weights under other circumstances, such as the consumption of fish with attached sinkers.

Science ◽  
2021 ◽  
Vol 371 (6536) ◽  
pp. eaax9050
Author(s):  
Steffen Breinlinger ◽  
Tabitha J. Phillips ◽  
Brigette N. Haram ◽  
Jan Mareš ◽  
José A. Martínez Yerena ◽  
...  

Vacuolar myelinopathy is a fatal neurological disease that was initially discovered during a mysterious mass mortality of bald eagles in Arkansas in the United States. The cause of this wildlife disease has eluded scientists for decades while its occurrence has continued to spread throughout freshwater reservoirs in the southeastern United States. Recent studies have demonstrated that vacuolar myelinopathy is induced by consumption of the epiphytic cyanobacterial species Aetokthonos hydrillicola growing on aquatic vegetation, primarily the invasive Hydrilla verticillata. Here, we describe the identification, biosynthetic gene cluster, and biological activity of aetokthonotoxin, a pentabrominated biindole alkaloid that is produced by the cyanobacterium A. hydrillicola. We identify this cyanobacterial neurotoxin as the causal agent of vacuolar myelinopathy and discuss environmental factors—especially bromide availability—that promote toxin production.


2017 ◽  
Vol 8 (1) ◽  
pp. 75-102
Author(s):  
Melike Tokay-Ünal

This article illustrates American Board of Commissioners for Foreign Missions’ support of the “missionary matrimony”, mid-nineteenth-century New England women’s perceptions of the missionary career obtained through matrimony, and their impressions of the Oriental mission fields and non-Christian or non-Protestant women, who were depicted as victims to be saved. A brief introduction to New England women’s involvement in foreign missions will continue with the driving force that led these women to leave the United States for far mission fields in the second part of the paper. This context will be exemplified with the story of a New England missionary wife. The analysis consists of the journal entries and letters of Seraphina Haynes Everett of Ottoman mission field. The writings of this woman from New England give detailed information about the spiritual voyage she was taking in the mid-nineteenth century Ottoman lands. In her letters to the United States, Everett described two Ottoman cities, Izmir (Smyrna) and Istanbul (Constantinople), and wrote about her impressions of Islam and Christianity as practiced in the Ottoman empire. Everett’s opinions of the Ottoman empire, which encouraged more American women to devote themselves to the education and to the evangelization of Armenian women of the Ottoman empire in the middle of the nineteenth century, conclude the paper.


PEDIATRICS ◽  
1983 ◽  
Vol 71 (2) ◽  
pp. 301-301
Author(s):  
PHILIP R. WYATT

To the Editor.— The report of the New England Regional Screening Program1 on neonatal hypothyroidism is a stunning illustration of the vulnerability of screening programs. It is unfortunate that this experience will probably be used as an argument to minimize the input of screening programs in the health care system in the United States. The report illustrates that, in addition to the 2% of the screened population that eluded the program, 14 infants with hypothyroidism escaped the full benefits of early detection and treatment.


2012 ◽  
Vol 34 (1) ◽  
pp. 22-26 ◽  
Author(s):  
M. Lykes ◽  
Erin McDonald ◽  
Cesar Boc

As the number of immigrants in the United States has increased dramatically in recent decades, so has the number of human rights violations against immigrants in the form of arrests without warrants, detention and deportation of parents without consideration of the well-being of their children, and incarceration without bail or the right to a public attorney. The Post-Deportation Human Rights Project (PDHRP) at Boston College was developed to investigate and respond to the legal and psychological effects of deportation policies on migrants living in or deported from the United States. This unique multidisciplinary project involves lawyers, social science faculty, and graduate students—all of whom are bilingual, one of whom is trilingual, and many of whom are bicultural—working together in partnership with local immigrant organizations to address the psychosocial impact of deportation on Latino and Maya families and communities. Our work includes psycho-educational and rights education workshops with immigrant parents and their children in southern New England as well as a cross-national project based in the U.S. and Guatemala supporting transnational families through participatory research, educational workshops, and legal resources.


2017 ◽  
Vol 18 (1) ◽  
pp. 28-34 ◽  
Author(s):  
Chandrasekar (Shaker) S. Kousik ◽  
Pingsheng Ji ◽  
Daniel S. Egel ◽  
Lina M. Quesada-Ocampo

About 50% of the watermelons in the United States are produced in the southeastern states, where optimal conditions for development of Phytophthora fruit rot prevail. Phytophthora fruit rot significantly limits watermelon production by causing serious yield losses before and after fruit harvest. Efficacy of fungicide rotation programs and Melcast-scheduled sprays for managing Phytophthora fruit rot was determined by conducting experiments in Phytophthora capsici-infested fields at three locations in southeastern United States (North Carolina, South Carolina, and Georgia). The mini seedless cultivar Wonder and seeded cultivar Mickey Lee (pollenizer) were used. Five weekly applications of fungicides were made at all locations. Significant fruit rot (53 to 91%, mean 68%) was observed in the nontreated control plots in all three years (2013 to 2015) and across locations. All fungicide rotation programs significantly reduced Phytophthora fruit rot compared with nontreated controls. Overall, the rotation of Zampro alternated with Orondis was highly effective across three locations and two years. Rotations of Actigard followed by Ranman+Ridomil Gold, Presidio, V-10208, and Orondis, or rotation of Revus alternated with Presidio were similarly effective. Use of Melcast, a melon disease-forecasting tool, may occasionally enable savings of one spray application without significantly impacting control. Although many fungicides are available for use in rotations, under very heavy rain and pathogen pressure, the fungicides alone may not offer adequate protection; therefore, an integrated approach should be used with other management options including well-drained fields.


2020 ◽  
Vol 13 (2) ◽  
pp. 29-38
Author(s):  
Gabriela Vargas-Cetina ◽  
Manpreet Kaur Kang

The world in which we live is crisscrossed by multiple flows of people, information, non-human life, travel circuits and goods. At least since the Sixteenth Century, the Americas have received and generated new social, cultural and product trends. As we see through the case studies presented here, modern literature and dance, the industrialization of food and the race to space cannot be historicized without considering the role the Americas, and particularly the United States, have played in all of them. We also see, at the same time, how these flows of thought, art, science and products emerged from sources outside the Americas to then take root in and beyond the United States. The authors in this special volume are devising conceptual tools to analyze this multiplicity across continents and also at the level of particular nations and localities. Concepts such as cosmopolitanism, translocality and astronoetics are brought to shed light on these complex crossings, giving us new ways to look at the intricacy of these distance-crossing flows. India, perhaps surprisingly, emerges as an important cultural interlocutor, beginning with the idealized, imagined versions of Indian spirituality that fueled the romanticism of the New England Transcendentalists, to the importance of Indian dance pioneers in the world stage during the first part of the twentieth century and the current importance of India as a player in the race to space. 


2006 ◽  
Vol 131 (3) ◽  
pp. 345-351 ◽  
Author(s):  
J. Ryan Stewart ◽  
William R. Graves ◽  
Reid D. Landes

Carolina buckthorn [Rhamnus caroliniana Walt. or Frangula caroliniana (Walt.) Gray] is an attractive and water-stress-resistant shrub or small tree distributed extensively in the southeastern United States that merits use in managed landscapes. Due to substantial climatic differences within its distribution (30-year normal midwinter minima range from 13 to -8 °C), selection among provenances based on differences in cold hardiness is warranted. Before selections are marketed, the potential of carolina buckthorn to be invasive also merits investigation. Ecological problems resulting from the introduction of Rhamnus L. species in the United States, most notably the dominance of R. cathartica L. (common buckthorn) over neighboring taxa, are due in part to early budbreak. Consequently, we investigated depth of cold hardiness and vernal budbreak of carolina buckthorn and common buckthorn. Stem samples of carolina buckthorn and common buckthorn collected in midwinter survived temperatures as low as -21 and -24 °C, respectively. Although the cold hardiness of carolina buckthorns from Missouri was greater than that of carolina buckthorns from Ohio and Texas on 2 Apr. 2003, there were no differences in cold hardiness of stems from Missouri and Texas on all three assessment dates in the second experiment. All plants survived at both field locations except for the carolina buckthorns from southern Texas planted in Iowa, which showed 0% and 17% survival in 2003 and 2004, respectively. Budbreak of both species with and without mulch in Ames, Iowa, was recorded from 9 Apr. to 10 May 2002. Mean budbreak of common buckthorn was 5.7 days earlier than budbreak of carolina buckthorn, and buds of mulched carolina buckthorns broke 4.2 days earlier than did buds of unmulched carolina buckthorns. We conclude that the cold hardiness of carolina buckthorn is sufficient to permit the species to be planted outside of its natural distribution. Populations of carolina buckthorn in Ohio and Missouri should be the focus of efforts to select genotypes for use in regions with harsh winters. Phenology of its budbreak suggests carolina buckthorn will not be as invasive as common buckthorn, but evaluation of additional determinants of invasiveness is warranted.


2019 ◽  
Vol 11 (3) ◽  
pp. 549-563 ◽  
Author(s):  
JungKyu Rhys Lim ◽  
Brooke Fisher Liu ◽  
Michael Egnoto

Abstract On average, 75% of tornado warnings in the United States are false alarms. Although forecasters have been concerned that false alarms may generate a complacent public, only a few research studies have examined how the public responds to tornado false alarms. Through four surveys (N = 4162), this study examines how residents in the southeastern United States understand, process, and respond to tornado false alarms. The study then compares social science research findings on perceptions of false alarms to actual county false alarm ratios and the number of tornado warnings issued by counties. Contrary to prior research, findings indicate that concerns about false alarm ratios generating a complacent public may be overblown. Results show that southeastern U.S. residents estimate tornado warnings to be more accurate than they are. Participants’ perceived false alarm ratios are not correlated with actual county false alarm ratios. Counterintuitively, the higher individuals perceive false alarm ratios and tornado alert accuracy to be, the more likely they are to take protective behavior such as sheltering in place in response to tornado warnings. Actual country false alarm ratios and the number of tornado warnings issued did not predict taking protective action.


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