The poorly-explored stomatal response to temperature at constant evaporative demand.

Changes in leaf temperature are known to drive stomatal responses, because the leaf-to-air water vapour gradient (Δw) increases with temperature if ambient vapour pressure is held constant, and stomata respond to changes in Δw. However, the direct response of stomata to temperature (DRST; the response when Δw is held constant by adjusting ambient humidity) has been examined far less extensively. Though the meagre available data suggest the response is usually positive, results differ widely and defy broad generalisation. As a result, little is known about the DRST. This review discusses the current state of knowledge about the DRST, including numerous hypothesised biophysical mechanisms, potential implications of the response for plant adaptation, and possible impacts of the DRST on plant-atmosphere carbon and water exchange in a changing climate.

The Student Volunteer Army: a 'repeat emergent' emergency response organisation.

This paper seeks to contribute to understanding of the factors associated with an effective emergent emergency response organisation and to provide new insights into this understudied area. It examines, through an analysis of a range of textual resources, the emergence and re-emergence of the Student Volunteer Army (SVA) during the devastating earthquakes in Canterbury, New Zealand, in 2010-11. This evaluation is conducted in relation to the four key features of an effective emergency response organisation: adaptability; direction; leadership; and communication. In addition, the paper aims to further understanding of 'emergency entrepreneurship' and thus of the values and strategies that underpin social entrepreneur organisations in times of normalcy. The paper concludes that the unique position of the SVA as a 'repeat emergent' emergency response organisation enabled it to innovate continually and to improve repeatedly its systems, relationships, and image, such that it exhibited features common to emergent and established emergency response organisations.

Gay Visibility and Disorganized and Strained Communities: A Community-Level Analysis of Anti-Gay Hate Crime in New York City.

Recent years have seen increased attention to the problem of hate crime, including such crime motivated by anti-gay bias. Although there is a growing body of research regarding the context of hate crime offending, there is a relative dearth of work investigating the community-level context of anti-gay hate crime. The current study investigates the community-level determinants of anti-gay hate crime in New York City from 2006 to 2010, using data obtained from the New York Police Department (NYPD)'s Hate Crimes Task Force (HCTF), one of the nation's leading hate crime police units. Using a framework drawing on group conflict and criminological theories, the current study examines anti-gay hate crime as an outcome of gay visibility, social disorganization, and economic strain. It is hypothesized that greater gay visibility, as well as social disorganization and poor and worsening economic conditions over time will be associated with increases in anti-gay hate crime. Results show that gay demographics, measured by static visibility and increasing gay populations over time, are shown to consistently predict higher levels of anti-gay hate crime. Adding to the generally mixed findings on the role of economic conditions in explaining hate crime, this study also finds that anti-gay hate crime occurs in more disadvantaged communities and communities marked by poorer economic conditions. The findings show anti-gay hate crime to be an outcome of gay visibility, disadvantage, and poor economic conditions, indicating that anti-gay crime may be an angry response to the strains present in the community. The study concludes with a discussion of the findings and implications for policy makers and practitioners.

Gender-Based Mass Shootings: An Examination of Attacks Motivated by Grievances Against Women.

This study provides a quantitative examination of gender-based mass shootings in America from 1966-2018. Gender-based mass shootings refer to attacks motivated by grievances against women, divided into four categories based on a specific woman or women in general, as well as whether they directly target the source of their grievances. Findings indicate that specific woman-targeted shooters were the most common and significantly different from their counterparts in their domestic violence history, racial diversity, and engagement in spree attacks. When comparing all gender-based attacks against other mass shootings, significant differences include relationship status, children, domestic violence history, substance abuse history, and suicide. This investigation provides implications for gender and mass shooting scholars, as well as practitioners developing strategies for intervention and prevention.