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New London, NH, United States

Colby–Sawyer College is a private, comprehensive baccalaureate college situated on a 200-acre campus in New London, in the Lake Sunapee region of New Hampshire, founded as a coeducational academy in 1837. Wikipedia.

Pine H.J.,Auburn University | Pine H.J.,Colby-Sawyer College | Boyd C.E.,Auburn University
Journal of the World Aquaculture Society | Year: 2010

Low-salinity (2.0-9.0 g/L) well waters used for inland culture of marine shrimp in Alabama are imbalanced with respect to ionic composition. Inputs of potassium (muriate of potash) and potassium-magnesium sulfate (Kmag®) fertilizers are used to correct these imbalances. Potassium is lost in overflow and intentional discharge, seepage, and through adsorption by bottom soils by exchangeable and non-exchangeable processes. This study was initiated to determine if bottom soils removed magnesium in the same manner as potassium. Laboratory soil-water mesocosms revealed that soils strongly adsorbed magnesium. The rate of adsorption tended to decline over time, indicating establishment of the equilibrium. Magnesium losses for the three soils ranged from 1405 to 1713 mg/tank (average = 1568 mg/tank). The cation exchange capacity (CEC) of the soils varied from 10.4 to 44.0 cmolc/kg (average = 24.6cmolc/kg). The decline in magnesium increased with higher soil CEC. In another trial, repeated exposures of soils to solutions of 40 mg Mg2+/L failed to saturate exchange sites, but rather maintained equilibrium with other base cations on soil adsorption sites. Dissolved sulfate resulting from additions of magnesium with magnesium sulfate heptahydrate (MgSO4·7H2O) was also monitored. Although difficulties of analysis occurred, sulfate was not adsorbed appreciably by the soils. © Copyright by the World Aquaculture Society 2010. Source

Ost M.,Novia University of Applied Sciences | Steele B.B.,Colby-Sawyer College
Oecologia | Year: 2010

Variation in nest concealment is puzzling given the expected strong selection for safe nest sites. Selecting a concealed nest may decrease the risk of clutch predation but hinder parents from escaping predators, providing a possible solution to this paradox. Because the relative value of current versus future reproduction may vary with breeder age or state, nest concealment may also vary as a function of these attributes. We tested four predictions of the female and clutch safety trade-off hypothesis in eiders (Somateria mollissima): (1) nest concealment is negatively related to escape possibilities, (2) our capture rate of females is higher in covered nests, (3) egg predation is higher in open nests, and (4) overall nest success is unrelated to nest habitat. We also analysed nest microhabitat preferences and nest success relative to breeder age and body condition, controlling for nest spatial centrality. As expected, nest concealment and potential escape angle were negatively related, and capture by us, indicating female predation vulnerability, increased with nest cover. Clutch size was smaller in open nests, suggesting higher partial clutch predation, while it was larger among experienced and good-condition breeders. The probability of successful hatching was unrelated to nest habitat, positively associated with breeder experience, and negatively associated with hatching date. Experienced females selected more concealed and centrally located nests without sacrificing potential escape angles. The age-specific spatial distribution of nests on islands was unrelated to nest initiation dates, indicating no apparent competition. The age-specific preference of eiders for concealed nests may reflect declining reproductive value with age or confidence in surviving despite selecting a concealed nest. The apparently positive relationship between female age and survival and fecundity in eiders refutes the former alternative. Individual improvement in choosing safe nest sites, coupled with differential survival of individuals performing well, most likely explains age-specific nest-site preference and success. © Springer-Verlag 2009. Source

Mou Y.,Macau University of Science and Technology | Atkin D.,University of Connecticut | Fu H.,Colby-Sawyer College | Lin C.A.,University of Connecticut | Lau T.Y.,University of Southern California
Telematics and Informatics | Year: 2013

Echoing the significance of mobile online networks in fueling the Arab Spring, the present study seeks to better understand social media influences in China by studying political activity among Chinese netizens. A survey of Chinese college students examines the influence of online social networks in the context of political attitudes and political participation. Study results reveal a moderate but positive impact of online forum and social networking site use on online political discussion. Implications for political change in the social networking era, particularly in regimes that practice Internet censorship like China's, are discussed. © 2013 Elsevier Ltd. All rights reserved. Source

Goldberg S.L.,Colby-Sawyer College | Mawn B.E.,University of Massachusetts Lowell
Public Health Nursing | Year: 2015

Objective: Food insecurity among U.S. households is a national concern. Since 2010, the U.S. Healthy People goal has been to reduce food insecurity to 6%. Despite this goal, 14.5% of households remained food insecure in 2013 (U.S. Department of Agriculture). The purpose of this study was to examine the antecedents of food insecurity among older adults through the lens of the social ecological model. Design and Sample: This retrospective cross-sectional study utilized secondary data from the National Health and Nutrition Examination Survey (NHANES) from the years 2007 and 2008 from a sample that included 2,045 adults 60 years of age and older. Measures: Variables related to the constructs of the social ecological model were examined using descriptive, chi-square, and logistic regression analyses. Results: Analyses of the model indicated that the severity of depression, reports of financial support, and having ever received household food stamp benefits had statistically significant main effects on food insecurity among older adults. Conclusions: The study findings have implications for nursing practice, education, and research and could facilitate the development of screening methods, interventions, and policy evaluation that focus on food insecurity at multiple spheres of influence among the targeted population. © 2015 Wiley Periodicals, Inc. Source

Fredericks R.,Colby-Sawyer College
Environmental Ethics | Year: 2014

We should give courage a more significant place in our understanding of how familiar virtutes can and should be reshaped to capture what it is to be virtuous relative to the environment. Matthew Pianalto's account of moral courage helps explain what a specifically environmental form of moral courage would look like. There are three benefits to be gained by recognizing courage as an environmental virtue: (1) it helps us to recognize the high stakes nature of much environmental activism and to act accordingly; (2) it can make environmental activism (or tolerance of it) more appealing to a broader audience by helping us dismantle stereotypes associated with environmentalism, including sexist and homophobic ones; and (3) it aides in the de-militarization of the concept of courage. Source

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