Icebergs boost phytoplankton growth in the Southern Ocean

Icebergs which calve from the Antarctic ice shelves and drift in the Southern Ocean deliver fresh water, dust and minerogenic particles to the surface ocean along the iceberg's path. Each of these components may have an effect on growth conditions for phytoplankton, as might the mechanical effects of the iceberg keel disturbing the water. Although anecdotal evidence and small-scale surveys suggest that drifting icebergs increase local primary production, no large-scale studies have reported on this possibility in detail. A combination of satellite and automated iceberg tracking data presented here shows that the probability of increased surface phytoplankton biomass was two-fold higher in the wake of a tracked iceberg compared to background biomass fluctuations. Only during the month of February were the effects of icebergs on surface biomass likely to be negative. These results confirm icebergs as a factor affecting phytoplankton in the Southern Ocean and highlight the need for detailed process studies so that responses to future changes in the Antarctic ice sheets may be predicted

Meaning-Making in Early Adolescence: Practices and Perspectives of School Counselors

Adolescence is a crucial life stage involving aspects of identity development and decision-making that have potential life-long consequences. A sense of meaning is related to many beneficial factors during adolescence, including psychological health, academic engagement, and overall well-being. This qualitative interview study was designed to investigate middle school counselors’ perspectives and practices regarding exploring meaning with their early adolescent students. Analysis of ten individual interviews and a focus group revealed that the school counselor participants did engage in work with middle school students around meaning-making. They primarily helped students to find meaning through identity exploration, specifically focusing on navigating challenging life circumstances, reflecting on behavior, and making meaningful connections. Practical implications for both school counselors and counselor educators are detailed

Meaning and Spirituality in Adolescence : Practices and Perspectives of School Counselors

Adolescence is a crucial life stage involving aspects of identity development and decision-making that have potential life-long consequences. Researchers have found that a sense of meaning and purpose is related to a number of beneficial factors during adolescence, including resilience, healthy self-esteem, academic engagement, and overall well-being. Spirituality is a main avenue through which many individuals find a sense of meaning and purpose and may be one of the mediating factors between adolescent meaning-making and well-being. Despite this knowledge, there is a lack of research involving the use of meaning-based counseling in the schools. There is also evidence that students are discouraged from exploring or expressing their spiritual beliefs and questions in the school setting. This qualitative interview study was designed to investigate middle school counselors’ perspectives and practices in regard to exploring meaning and spirituality with their adolescent students. Analysis of ten individual interviews and a focus group revealed that the school counselor participants did believe it was important to work with students around meaning and did so primarily through the overarching theme of identity. Interviewees described how they supported students with many aspects of meaning and identity exploration through avenues such as their suffering and challenging circumstances, behavior and choices, and connections with others and things they care about. Spirituality, however, was an aspect of students’ identities that participants reported avoiding in their work with adolescents in the schools. Analysis of participants’ perspectives suggested that avoidance of this area was due to the participants’ own identities as public school employees, fear of perceived repercussions, and connotations with the risk of imposing their own values. Practical implications for both school counselors and counselor educators, as well as directions for future research, are addressed

Sexual Assault on College Campuses: Substance Use, Victim Status Awareness, and Barriers to Reporting

Background: Despite the high incidence of estimated sexual assault on college campuses, underreporting is substantial and perpetuated by a culture of rape myths that are pervasive across society in general and college campuses.Aim: The aim of this study was to: examine college student awareness of their own sexual assault victimization status, barriers to reporting, and the prevalence of substance use in sexual assault.Method: This was a cross-sectional mixed-method survey sent to a universal sample of college students from two neighboring institutions of higher education (N=2,724).Results: Results from this survey demonstrated a lack of understanding of what constitutes sexual assault, primarily attributed to the normalization of assault and rape myths. Regardless of victim status awareness, those who were victimized were significantly more likely to use higher levels of alcohol than non-victims, and were less likely to identify their victimization as sexual assault, highlighting the need for college students to understand that alcohol-involved sexual assault is still sexual assault.Conclusions: Overwhelmingly, participants cited the potential consequences as far greater than any potential benefits to reporting sexual assault. Confusion about what constitutes sexual assault and uncertainty of available resources were also recognized as contributing factors in underreporting

Endogenous retrovirus RNA expression differences between race, stage and HPV status offer improved prognostication among women with cervical cancer

Endogenous human retroviruses (ERVs) are remnants of exogenous retroviruses that have integrated into the human genome. Using publicly available RNA-seq data from 63 cervical cancer patients, we investigated the expression of ERVs in cervical cancers. Four aspects of cervical cancer were investigated: patient ancestral background, tumor HPV type, tumor stage and patient survival. Between the racial subgroups, 74 ERVs were significantly differentially expressed, with Black Americans having 30 upregulated and 44 downregulated (including MER21C, HERV9-int, and HERVH-int) ERVs when compared to White Americans. We found that 3313 ERVs were differentially expressed between HPV subgroups, including MER41A, HERVH-int and HERVK9. There were 28 downregulated (including MLT1D and HERVH-int) and 61 upregulated (including MER41A) ERVs in locally advanced-stage compared to early-stage samples. Tissue microarrays of cervical cancer patients were used to investigate the protein expression of ERVs with protein coding potential (i.e., HERVK and ERV3). Significant differences in protein expression of ERV3

Linking variation in planktonic primary production to coral reef fish growth and condition

Within low-nutrient tropical oceans, islands and atolls with higher primary production support higher fish biomass and reef organism abundance. External energy subsidies can be delivered onto reefs via a range of physical mechanisms. However, the influence of spatial variation in primary production on reef fish growth and condition is largely unknown. It is not yet clear how energy subsidies interact with reef depth and slope. Here we test the hypothesis that with increased proximity to deep-water oceanic nutrient sources, or at sites with shallower reef slopes, parameters of fish growth and condition will be higher. Contrary to expectations, we found no association between fish growth rate and sites with higher mean chlorophyll-a values. There were no differences in fish δ 15N or δ 13C values between depths. The relationship between fish condition and primary production was influenced by depth, driven by increased fish condition at shallow depths within a primary production 'hotspot' site. Carbon δ 13C was depleted with increasing primary production, and interacted with reef slope. Our results indicate that variable primary production did not influence growth rates in planktivorous Chromis fieldi within 10-17.5 m depth, but show site-specific variation in reef physical characteristics influencing fish carbon isotopic composition

Linking variation in planktonic primary production to coral reef fish growth and condition

Within low-nutrient tropical oceans, islands and atolls with higher primary production support higher fish biomass and reef organism abundance. External energy subsidies can be delivered onto reefs via a range of physical mechanisms. However, the influence of spatial variation in primary production on reef fish growth and condition is largely unknown. It is not yet dear how energy subsidies interact with reef depth and slope. Here we test the hypothesis that with increased proximity to deep-water oceanic nutrient sources, or at sites with shallower reef slopes, parameters of fish growth and condition will be higher. Contrary to expectations, we found no association between fish growth rate and sites with higher mean chlorophyll-a values. There were no differences in fish delta N-15 or delta C-13 values between depths. The relationship between fish condition and primary production was influenced by depth, driven by increased fish condition at shallow depths within a primary production 'hotspot' site. Carbon delta C-13 was depleted with increasing primary production, and interacted with reef slope. Our results indicate that variable primary production did not influence growth rates in planktivorous Chromis fieldi within 10-17.5 m depth, but show site-specific variation in reef physical characteristics influencing fish carbon isotopic composition

Impact of Scottish smoke-free legislation on smoking quit attempts and prevalence

<p><b>Objectives:</b> In Scotland, legislation was implemented in March 2006 prohibiting smoking in all wholly or partially enclosed public spaces. We investigated the impact on attempts to quit smoking and smoking prevalence.</p> <p><b>Methods:</b> We performed time series models using Box-Jenkins autoregressive integrated moving averages (ARIMA) on monthly data on the gross ingredient cost of all nicotine replacement therapy (NRT) prescribed in Scotland in 2003–2009, and quarterly data on self-reported smoking prevalence between January 1999 and September 2010 from the Scottish Household Survey.</p> <p><b>Results:</b> NRT prescription costs were significantly higher than expected over the three months prior to implementation of the legislation. Prescription costs peaked at £1.3 million in March 2006; £292,005.9 (95% CI £260,402.3, £323,609, p<0.001) higher than the monthly norm. Following implementation of the legislation, costs fell exponentially by around 26% per month (95% CI 17%, 35%, p<0.001). Twelve months following implementation, the costs were not significantly different to monthly norms. Smoking prevalence fell by 8.0% overall, from 31.3% in January 1999 to 23.7% in July–September 2010. In the quarter prior to implementation of the legislation, smoking prevalence fell by 1.7% (95% CI 2.4%, 1.0%, p<0.001) more than expected from the underlying trend.</p> <p><b>Conclusions:</b> Quit attempts increased in the three months leading up to Scotland's smoke-free legislation, resulting in a fall in smoking prevalence. However, neither has been sustained suggesting the need for additional tobacco control measures and ongoing support.</p&gt

Tracking seabird migration in the tropical Indian Ocean reveals basin-scale conservation need

Summary Understanding marine predator distributions is an essential component of arresting their catastrophic declines.1,2,3,4 In temperate, polar, and upwelling seas, predictable oceanographic features can aggregate migratory predators, which benefit from site-based protection.5,6,7,8 In more oligotrophic tropical waters, however, it is unclear whether environmental conditions create similar multi-species hotspots. We track the non-breeding movements and habitat preferences of a tropical seabird assemblage (n = 348 individuals, 9 species, and 10 colonies in the western Indian Ocean), which supports globally important biodiversity.9,10,11,12 We mapped species richness from tracked populations and then predicted the same diversity measure for all known Indian Ocean colonies. Most species had large non-breeding ranges, low or variable residency patterns, and specific habitat preferences. This in turn revealed that maximum species richness covered >3.9 million km2, with no focused aggregations, in stark contrast to large-scale tracking studies in all other ocean basins.5,6,7,13,14 High species richness was captured by existing marine protected areas (MPAs) in the region; however, most occurred in the unprotected high seas beyond national jurisdictions. Seabirds experience cumulative anthropogenic impacts13 and high mortality15,16 during non-breeding. Therefore, our results suggest that seabird conservation in the tropical Indian Ocean requires an ocean-wide perspective, including high seas legislation.17 As restoration actions improve the outlook for tropical seabirds on land18,19,20,21,22 and environmental change reshapes the habitats that support them at sea,15,16 appropriate marine conservation will be crucial for their long-term recovery and whole ecosystem restoration